Configuration finder

Delphi is configured on several levels: inside a flow, per application, per team, in Platform Settings, in the Portal feature profile and on the services themselves. Each table lists the controls of one level. Follow the owner link for defaults, ranges, precedence and verification. The feature map shows the same controls grouped by feature.

Availability: Next. A control that depends on an optional feature or role shows it in the feature entry it links to.

Find a setting or feature

Configuration levelAll levels

Browse all controls below.

Levels

• Flow and node settings
• Application settings
• Team settings
• Platform settings
• Portal and feature profiles
• Services and containers
• HTTP API
• Browser SDK
• By reader role

Flow and node settings

Control	Names to search for	Feature	Owner section
Apps › Flows › Flow Builder	flowDefinition	Flow builder canvas	2. Add and configure steps
Browser action capabilities	—	Browser action capabilities	Browser action capabilities on the canvas
Conversation Step inspector › Manage Actions	actionTools, parameters, code	Actions an agent can call	Manage an agent's actions
End node and transfer action › SIP headers	sipHeaders, hangupSipHeaders, transferSipHeaders, transferSipQueryParams	Send SIP headers on hangup and transfer	Diagnostic header formats
Entry point inspector › Audio	linkFormat, auto, slin16, slin24, slin48, alaw, ulaw	Audio format between the voice service and the AI runtime	AI audio format and preprocessing
Flow Builder › Action Request inspector	action_request	Action request step	Action request: ask the runtime host to
Flow Builder › Add step	text_agent, voice_agent, tts_playback, llm_query, stt_transcribe, interpretation_transform, dtmf_collect, webhook, action_request, condition, transfer, end	Flow step types	Execution paths
Flow Builder › connection inspector	transitions, targetNode, setContext	Transitions between steps	Main-flow transitions
Flow Builder › Conversation Step inspector	voice_agent, instructions, transitions	Conversation step (voice agent)	Voice agent settings
Flow Builder › Decision Step inspector	condition, decisionRows	Decision step	Condition: choose the next branch
Flow Builder › External Service inspector	webhook, url, method, headers, resultMapping	External service step	Webhook: request an HTTP service
Flow Builder › Interpretation Transform inspector	interpretation_transform	Live interpretation step	Interpretation transform settings
Flow Builder › LLM Query inspector	llm_query, prompt, resultVariable	Language model query step	LLM query settings
Flow Builder › Settings › App Settings	appSettings, hideFromReporting	Flow settings	Change the flow's Settings
Flow Builder › Settings › Shared Voice Flow	sharedVoiceFlow	Shared voice flow	Add or remove the Shared Voice Flow
Flow Builder › Side flow	sideFlows, trigger, ws_message, context_change, call_event	Side flows	Side flows and continuous processing
Flow Builder › Source	FlowDefinition	Flow source view and import	4. Edit or move a definition through
Flow Builder › STT Transcribe inspector	stt_transcribe	Speech transcription step	STT transcribe settings
Flow Builder › Text Chat Step inspector	text_agent	Text chat step	Text agent settings
Flow Builder › toolbar › editing status	acquireEditing, takeOverEditing, releaseEditing	Shared draft editing and takeover	Work with other editors on the same
Flow Builder › toolbar › Publish	saveDraft, publish	Drafts and publishing	4. Publish the flow
Flow Builder › TTS Playback inspector	tts_playback	Speech playback step	TTS playback settings
Flow Builder › Variables	context, contextSummary	Flow data and variables	Find and declare flow variables
Flow Builder › Version History	listVersions, revertToVersion	Flow version history and restore	Inspect and restore saved flow versions
Flow Designer › DTMF Collect node	dtmf_collect, maxDigits, timeoutMs, terminationKey, resultVariable, maxAttempts, prompt.media, dtmfResult	Collect keypad digits in a flow	DTMF collect: gather keypad input
Flow Designer › End node	end	Hang up from a flow or a bot	End: finish the branch
Flow Designer › Node inspector › Provider override	provider, ProviderRef	Override the provider on a single step	Provider overrides
Flow Designer › Provider editor › Pipeline mode	unified, modular, tts_only, llm_only, PipelineMode	Pipeline modes (unified realtime, modular voice, TTS only, LLM only)	Pipeline mode and changing configuration
Flow Designer › Settings › Provider	providerConfig, realtime.type, llm.type, stt.type, tts.type	Configure the AI provider of a flow	Configure a provider in the editor
Flow Designer › Transfer node	transfer, method, target, targetNumber, message, playMessage, canConfirm, routingPool, callerId	Transfer a call from a flow	Transfer: hand off a call
Flow Designer › Variables & Resilience › Resilience	gatewayProfile.failover, resilience	Flow-level resilience settings	Set flow-level resilience
Flow settings › Bot no-input give-up	botNoInputGiveUpTimeoutMS, botNoInputGiveUpWarningMessage, botNoInputGiveUpUrl, botNoInputGiveUpTransfer	Give up when the bot stops responding	Give up when the bot stays silent
Flow Settings › Bot no-input give-up › Give-up transfer target	botNoInputGiveUpTransfer, routingPool	Transfer when the bot stops answering	3. Transfer instead of ending a silent
Flow Settings › Language	language.primary, language.mode, strict, flexible, language.allowedLanguages	Flow primary language and language switching	Set language defaults
Flow settings › Max call duration (seconds)	maxCallDurationSeconds, maxDurationWarningMessage	Maximum call duration	Limit call duration
Flow settings › Media connection warning	mediaConnectionWarningText, mediaConnectionWarningLanguage	Media connection warning and disconnect	Customize the media connection warning
Flow Settings › Recording outputs and storage protection	dtmfEvents	Keypad input in recordings and transcripts	Select the outputs
Flow Settings › System audio triggers	botDelay, longAction, transfer, error, delayMs	Play system audio on call events	Choose audio for App triggers
Flow Settings › System audio triggers › Transfer	transfer	Audio while a transfer is in progress	Choose audio for App triggers
Flow Settings › TTS cache backend	ttsCaching, inherit, off, media, local, ttsCacheMaxRetention, disableTtsCache	Cache synthesized speech for playback	Choose TTS caching
Flow variables › sipHeaders (read-only, telephony)	sipHeaders	Inbound SIP headers available to the call	Find and declare flow variables
Provider editor › Advanced Settings › Custom URL / Base URL	customUrl, baseUrl, endpointUrl	Custom provider endpoints	Verify a custom provider connection
Provider editor › API Key	openaiDefaultKey, azureDefaultKey, team.openaiDefaultKey	Provider credentials and key references	Credential fields and safe examples
Provider editor › Audio › AI Input / AI Output	ai.input, ai.output, pcm16, ulaw, alaw	AI input and output audio format	AI audio format and preprocessing
Provider editor › Audio › AI Input / AI Output / Rate	ai.input, ai.output, pcm16, ulaw, alaw, g722	AI-side audio format	AI audio format and preprocessing
Provider editor › Audio › Audio Preprocessing	audioPreprocessing, enabled, denoise, denoiseBackend, denoiseAttenLimDb, denoisePostFilterBeta	Audio preprocessing and noise reduction	AI audio format and preprocessing
Provider editor › LLM Provider › OpenAI Chat	openai_chat, gpt-4o, Base URL, maxTokens, temperature, presencePenalty, frequencyPenalty	OpenAI Chat language model	LLM provider controls
Provider editor › Realtime Advanced Settings › Allow callers to interrupt realtime responses	interruptResponse	Barge-in while the bot is speaking	Realtime Advanced Settings
Provider editor › Realtime Provider › Advanced Settings	vadType, server_vad, semantic_vad, silence_duration_ms, toolChoice, parallel_tool_calls, whisper-1	Realtime turn detection and transcription settings	Realtime Advanced Settings
Provider editor › Realtime Provider › Azure Realtime	azure_realtime, Resource Name, Domain Suffix, Deployment Name, Full Request URL	Azure OpenAI Realtime	Azure URL configuration
Provider editor › Realtime Provider › Gemini Live	gemini_live, gemini-3.1-flash-live-preview, Realtime URL	Google Gemini Live	Provider-specific connection fields
Provider editor › Realtime Provider › Grok Realtime	grok_realtime, grok-voice-latest, grok-transcribe, language_hint	xAI Grok Realtime	Provider-specific connection fields
Provider editor › Realtime Provider › OpenAI GPT-Live (Pilot)	openai_live, gpt-live-1, marin, INVALID_LIVE_AUDIO_FORMAT	OpenAI GPT-Live (pilot)	GPT-Live (Pilot)
Provider editor › Realtime Provider › OpenAI Realtime	openai_realtime, gpt-realtime-1.5, alloy	OpenAI Realtime	Provider-specific connection fields
Provider editor › Realtime Provider › Pythia Realtime › URL	pythia_realtime	Pythia Realtime	Provider-specific connection fields
Provider editor › STT	azure_stt, inworld_stt	Speech recognition providers	Configure modular speech recognition
Provider editor › STT › Language detection	languageDetectionActivate, languageDetectionMode, alternativeLanguages, languageDetectionMinConfidence, languageDetectionAutoSwitch	Detect and switch the caller's language	Where to set the properties
Provider editor › STT › Speech contexts	sttSpeechContexts, phrases, sttContextId	Speech context phrases	Speech context phrases
Provider editor › STT fallback providers / TTS fallback providers	sttFallbacks, ttsFallbacks	Alternate speech recognition and synthesis providers	STT and TTS fallback providers
Provider editor › STT Provider › Azure STT	azure_stt	Azure speech recognition	Azure STT controls
Provider editor › STT Provider › Inworld STT	inworld_stt	Inworld speech recognition	Inworld STT controls
Provider editor › Timeouts & retries	timeoutMs, retryCount, reconnectAttempts, retryDelayMs, backoffFactor, retryOn, keepalive	Provider timeouts, retries and reconnects	Retries, timeouts and fallback providers
Provider editor › Timeouts & retries	resilience	Resilience defaults and inheritance	Resolve the complete retry policy
Provider editor › Timeouts & retries › Retry HTTP status codes	retryStatusCodes, DEFAULT_PROVIDER_RETRY_STATUS_CODES	Retry on selected HTTP status codes	Retry HTTP status codes
Provider editor › TTS	openai_tts, azure_tts, inworld_tts, voiceName, speed, responseFormat	Speech synthesis providers and voices	Configure speech synthesis
Provider editor › TTS Provider	openai_tts, azure_tts, inworld_tts	Speech synthesis providers (OpenAI, Azure, Inworld)	Configure speech synthesis
Tool code helper	sendSms	Send text messages from flows	Configure and diagnose SMS delivery
Transfer › Routing pool	routingPool	Outbound routing pools	2. Set the target and egress route
Transfer action › Attended transfer	sip_invite_bridge, attendedProvider, message	Attended transfer through the platform	Call transfer methods
Transfer action › Max ring time (seconds)	maxRingTime	Ring time for the transfer target	Transfer: hand off a call
Transfer action › Media mode	mediaMode, gateway, p2p	Media path after an INVITE transfer	Call transfer methods
Transfer node › Method	sip_refer, sip_refer_replace, sip_invite, sip_invite_bridge, sip_invite_reinvite_p2p, sip_bye	Transfer methods (REFER, INVITE, BYE)	Transfer: hand off a call
Transfer node › REFER outcome mode	referOutcomeMode, blind, notify	Blind or notify REFER outcome	Transfer: hand off a call
Transfer node › SIP headers and query parameters	sipHeaders, sipQueryParams, reason	Headers and URI parameters on a transfer	4. Add SIP headers
Transfer node › Target and routing pool	target, targetNumber, routingPool, callerId	Transfer target, routing pool and caller ID	2. Set the target and egress route
Variable field picker › sipHeaders	sipHeaders	Read a SIP header in a flow	Insert a variable into a field
Variables & Resilience › Resilience › Bot delay and terminal failover	botNoInputTimeoutMs, botNoInputSpeech, botNoInputUrl, botNoInputRetries, abortPlayOnBotMessage, resumeRecognitionTimeoutMs, resumeRecognitionSpeech, resumeRecognitionPlayUrl	Feedback while the bot is slow to answer	Give callers feedback while the bot is
Variables & Resilience › Resilience › Configure final call actions	failover.enabled, policies, triggers, bot_timeout, bot_error, stt_error, tts_error, system_error, transfer, hangup, botNoInputGiveUpTimeoutMs	Final call actions on runtime failure	Configure final call actions
Voice agent › Capabilities › Collect keypad input	collect_digits	Let a voice agent collect digits	Capability shortcuts and their concrete effects

Application settings

Control	Names to search for	Feature	Owner section
App › Endpoints › Web voice or web chat › Allowed Origins / Allowed IPs	allowedOrigins, allowedIPs	Allowed origins and IP addresses for browser endpoints	Web Voice and Web Chat fields
App › Flow settings › QA Scoring	qaScoringEnabled, qaScoringPrompt, qaScoringProvider, qaScoringModel	QA scoring per app	Set application QA scoring
App › Flow settings › Recording artefacts	recordingEnabled, recordingOutputs, recordingFrequency	Choose what an app records	Select the outputs
App › Flow settings › Recording artefacts	call_transcript, stt_transcript, tts_transcript, call_audio_processed, call_audio_raw, stt_audio, tts_audio	Recording output files	File roles and creation conditions
App › Flow settings › Recording artefacts › transcripts	call_transcript, stt_transcript, tts_transcript	Call transcripts	Select the outputs
App › Flow settings › Starting protection	sensitiveInfoOnStorage	Sensitive information protection in recordings	Choose the starting storage protection
App settings › excluded from dashboard metrics	excludeFromDashboard	Dashboard widgets	Understand the Overview screen
Application › Active switch	app_inactive	Calls refused before answer	Refuse calls while an app is switched
Application › Entry points › Phone › Extension	extension	Extensions on a base number	Phone fields
Application endpoint › Audio	Endpoint.audio.linkFormat	Audio format between the voice service and the AI runtime	AI audio format and preprocessing
Apps › Copy app	app.copy	Applications and their flows	Copy a published application
Apps › Create app	FlowDefinition, flowDefinition	Applications and their flows	1. Choose the team and starting point
Apps › Create app › AI Flow Builder › Start with AI	Start with AI	AI flow builder	Pasted imports and AI generation start as
Apps › Create app › Browse templates	flowTemplate	Flow templates	2. Create from a template
Apps › Create app › Import	Import legacy JSON, Paste FlowDefinition JSON	Flow source view and import	Import controls and their meanings
Apps › Endpoints	phone, web_voice, web_chat, entryPoints	Application entry points	Inspect an entry point
Conversations › conversation detail › Delete recording	deleteRecording	Delete a call's recordings	4. Check retained audio separately
Conversations › conversation detail › QA	qa	Review a conversation's QA result	Review a QA result

Team settings

Control	Names to search for	Feature	Owner section
Base number › Extensions	extensionsEnabled, Extension.code	Select an extension by keypad before the flow starts	Manage base numbers
Conversations	conversation	Conversation history and review	1. Find the right conversation
Conversations › conversation › Debug	/conversations/[id]	Conversation debug view (logs, span tree, SIP ladder)	Search the logs of a call
Dashboard › Caller Satisfaction widget	satisfactionByApp	Caller satisfaction on the dashboard	Investigate caller satisfaction
Dashboard › Edit Dashboard	dashboard, widget	Dashboard widgets	Add and arrange widgets
Dashboard › period selector	timeframe	Dashboard reporting period	Choose a preset
Dashboard › widget metric	totalCallsByTimeframe, totalCallMinutesByTimeframe, uniqueCallersByApp, tokensByApp, errorsPerAppTimeSeries, totalTtsCharactersByTimeframe	Call and usage metrics	Read the available metrics
Manage Team › Base numbers › Header Manipulation Configs	headerManipulationConfigIds	Assign header rule sets to a base number	Change a base-number header assignment separately
Manage Team › Transfer restrictions	transferRestrictions	Transfer destination restrictions	Apply transfer restrictions at team scope
Settings › API Keys	apiKey, ApiKey	Team API keys	Create a scoped key
Settings › API Keys › Create API Key › Scopes	scopes, CREATE_CALL_TOKEN, READ_TEAM_APPS, READ_TEAM_USAGE, READ_CALL_TOKEN	API key scopes	Create a scoped key
Settings › Features	/settings/features	Enabled features overview	See which features are enabled
Settings › My Subscription	changePlan, cancelScheduledChange	Change plan or billing interval	Change a self-service plan or billing interval
Settings › My Subscription	subscription	Subscription management	Open the right team's subscription
Settings › My Subscription › Cancel subscription	cancel, reactivate, createResubscribeCheckoutSession	Cancel, undo cancellation or resubscribe	Cancel, undo cancellation or return after cancellation
Settings › My Subscription › Current Usage	currentUsage, usageHistory	Current usage and usage history	Read usage and limits
Settings › My Subscription › Current Usage	includedSms, overagePricePerSms	Text message allowance and usage	Read usage and limits
Settings › My Subscription › Legal Documents	legalConsent	Legal documents and consent	Review legal documents
Settings › My Subscription › Notification Thresholds	notifyAtPercents	Usage and overage alerts	Set overage and notifications
Settings › My Subscription › Subscription Settings	overageLimitCents	Overage spending cap and notification thresholds	Set overage and notifications
Settings › Notifications	notification	In-app notifications	Open notifications from the header
Settings › Team	companyName, vatId, taxNumber, billingEmail	Team settings	Manage Team fields
Settings › Team › Call Recording	recordingBucket, recordingRegion, recordingAssumeRoleArn	Team recording storage bucket	Prepare the destination
Settings › Team › Enable Members to publish Apps	allowMembersToPublishApps	Let members publish apps	Configure shared settings
Settings › Team › QA Scoring Defaults	qaScoringEnabled, qaScoringPrompt, qaScoringProvider, qaScoringModel, qaScoringKeyTemplate	QA scoring defaults for the platform and teams	Configure QA defaults when available
Settings › Team › secret storage	awsAssumeRoleArn, awsSecretsKey, awsRegion	Team secret storage in AWS	Connect team secret storage
Settings › Tools	tool	Team tools	Prepare a team tool
Settings › Tools › code editor	code	Tool code and its runtime helpers	Use HTTP APIs without exposing credentials
Settings › Users	teamUser	Create users and manage memberships	Add an existing person to another team
Settings › Users › team role	ADMIN, MEMBER, VIEWER	Team roles	Change a team role or remove membership
Settings › Variables	teamVariable	Team variables and secrets	Create and verify a shared value
Settings › Variables › platform-managed rows	openaiDefaultKey, azureDefaultKey	Platform-managed default keys and AI defaults	Platform-managed defaults
Settings › Variables › Set Secret	Set Secret	Provider credentials and key references	Platform-managed defaults
System audio	SystemAudioAsset, SystemAudioVersion, WAV, TTS	System audio library	Upload team audio
Team › Resilience defaults	resilienceDefaults	Resilience defaults and inheritance	Set team resilience defaults
Team › Resilience defaults › failover	failover	Final call actions on runtime failure	Set team resilience defaults
Team recording bucket › lifecycle rule	delphi-recordings-ttl	Recording retention	Retention behavior
Team settings › Base number header assignment	—	Assign numbers to teams	Change a base-number header assignment separately

Platform settings

Control	Names to search for	Feature	Owner section
Admin Settings › Access Logs	/admin-settings/access-logs	Access logs (sign-in and access events)	Investigate an access event
Admin Settings › API Server Config	ApiServerConfig, rateLimitEnabled, rateLimitMax, rateLimitWindowMs	API rate limits	Adjust API rate limits
Admin Settings › Base Numbers	baseNumber	Base numbers	Manage base numbers
Admin Settings › Base Numbers › Extensions	extensionsEnabled	Extensions on a base number	Manage base numbers
Admin Settings › Base Numbers › Teams	addTeam, removeTeam	Assign numbers to teams	Manage base numbers
Admin Settings › Config Backups	/admin-settings/config-backups	Configuration snapshots and backups	Snapshot or backup: which asset fits
Admin Settings › Cron Schedules	/admin-settings/cron-schedules, /admin-settings/job-history	Background jobs and schedules	4. Change a recurring schedule deliberately
Admin Settings › Cron Schedules	cleanup-cancelled-teams	Cleanup after cancellation	Canceled-team cleanup
Admin Settings › Cron Schedules	settle-monthly-overages, retry-failed-overage-payments	Overage billing	Interpret the job before retrying
Admin Settings › Cron Schedules › conversation-scoring	conversation-scoring, SCORING_CONVERSATIONS	Scoring job and scoring failures	Configure the scoring job
Admin Settings › Custom Deals	customDeal	Custom agreements	Platform administrator: create and apply a version
Admin Settings › Egress › Pools	egressRoute, strategy, round_robin, priority_failover	Outbound routing pools	Pool fields and selection
Admin Settings › Egress › Pools › default	egressDefaults.defaultRouteId	Platform default outbound route	Pool fields and selection
Admin Settings › Egress › Pools › Strategy	priority_failover	Outbound trunk failover	Pool fields and selection
Admin Settings › Egress › trunk › TLS fields	/admin-settings/egress, tlsVerifyCert, tlsRequireMutual, tlsCaCertMaterialId, tlsClientCertMaterialId, tlsClientKeyMaterialId, tlsPeerNameVerifyMode	TLS and mutual authentication on egress trunks	Trunk fields
Admin Settings › Egress › Trunks	egressTrunk, codecPreferences, priority	Outbound (egress) trunks	Trunk fields
Admin Settings › Egress › Trunks › Authentication	authMethod, ip_only, digest, registration, ip_and_digest, tls_mutual, tlsRequireMutual	Outbound trunk authentication and registration	Trunk fields
Admin Settings › Egress › Trunks › Caller ID Mode	callerIdMode, passthrough, base_number, override, callerIdOverride	Outbound caller ID	Trunk fields
Admin Settings › Egress › Trunks › Routing Method	routingMethod, sipUri, transport, static_uri, number_host, genesys_fqdn, genesys_tgrp, proxyHosts, proxyPort, genesysTrunkContext, genesysRegion, genesysDomain	Outbound routing methods and contact-centre trunks	Trunk fields
Admin Settings › Job History	AUDIO_RECORDING_PROCESS, AUDIO_RECORDING_SOURCE_CLEANUP, recordingStatus	Recording processing and playback	Trace the recording stages
Admin Settings › Languages	language	Interface languages and translations	Add or edit a language
Admin Settings › Notifications › Notification Types	notificationType, NotificationResource	Notification types	2. Separate a notification-rule problem from transport
Admin Settings › Platform › Media connection warning	warningAfterMs, disconnectAfterMs, warningText, warningLanguage	Media connection warning and disconnect	Configure loss-of-audio warnings
Admin Settings › Platform Settings	/admin-settings/platform-settings, platformSecrets, llmDefaults, qaScoring, signoz, ttsMediaCache, egressDefaults, transferRestrictions, resilienceDefaults, mediaConnection, sensitiveStorage, edgeTls, languageDetection	Platform settings	Other Platform Settings controls
Admin Settings › Platform Settings › AI Builder Defaults	briefingAi, briefingAiKey, builderAi, builderAiKey, openai, anthropic, azure	AI flow builder models and credentials	Configure AI defaults and check their consumers
Admin Settings › Platform Settings › AI defaults	openaiDefaultKey, azureDefaultKey, llmDefaults, AZURE_OPENAI_BASE_URL	Platform-managed default keys and AI defaults	Configure AI defaults and check their consumers
Admin Settings › Platform Settings › edge TLS	edgeTls, renewalThresholdDays, automation, manual	Public edge certificates and renewal	Public edge certificate lifecycle
Admin Settings › Platform Settings › QA Scoring Defaults	qaScoring, llmDefaults.scoring, scoringAiKey	QA scoring defaults for the platform and teams	Configure AI defaults and check their consumers
Admin Settings › Platform Settings › Resilience defaults	resilienceDefaults, providerDefaults, failover	Resilience defaults and inheritance	Other Platform Settings controls
Admin Settings › Platform Settings › Secret Storage	platformSecrets, awsRegion, namespace, generalCollectionPath, tlsCollectionPath, PLATFORM_SECRETS_NAMESPACE	Platform secrets and secret storage	Establish platform secret storage
Admin Settings › Platform Settings › Secret Storage › TLS materials collection	tlsCollectionPath, voiceai:tls:materials	Activate trunk certificates and trust material	Activate SIP trust and client material
Admin Settings › Platform Settings › Sensitive storage	sensitiveInfoOnStorage	Sensitive information protection in recordings	Set the sensitive-storage default
Admin Settings › Platform Settings › SigNoz Observability	signoz, SIGNOZ_URL, SIGNOZ_API_KEY, SIGNOZ_SPAN_PERSIST_DELAY_SECONDS, SIGNOZ_SIP_LADDER_PERSIST_DELAY_SECONDS	SigNoz connection for the web application	Other Platform Settings controls
Admin Settings › Server Groups	serverGroup, role, voice, api, telpro, teams, priority	Server groups	Configure a server group
Admin Settings › Server Groups › Enable Auto-Scaling	scalingEnabled, minInstances, maxInstances, scaleUpThreshold, scaleDownThreshold, cooldownSeconds	Automatic scaling	Configure a server group
Admin Settings › Server Groups › group details › TelPro instances	—	Edge instance overview	Target one server group
Admin Settings › Server Groups › Load Balancing Method	lbMethod, round_robin, least_calls, random	Load balancing across voice instances	Configure a server group
Admin Settings › Server Groups › Load Balancing Method	lbMethod	Voice host selection by the edge	Configure a server group
Admin Settings › Server Groups › Maintenance	CONFIG_REFRESH	Server group maintenance (drain, resume, refresh, restart)	Target one server group
Admin Settings › Server Groups › Maintenance	/admin-settings/server-groups/maintenance, /admin-settings/service-refresh	Service refresh and server group maintenance	Refresh running services deliberately
Admin Settings › Server Groups › Maintenance › Drain without restart	accept_new_calls	Draining an edge	Drain an edge instance
Admin Settings › Server Groups › Max Concurrent Calls	maxConcurrentCalls	Concurrent call limit per voice instance and group	Configure a server group
Admin Settings › Server Groups › Scaling Provider	scalingProvider, scalingConfig	Scaling providers and provisioning scripts	Configure a server group
Admin Settings › Server Groups › servers	online, degraded, overloaded, maintenance, offline, usedRtpPorts	Voice server inventory	Verify the fleet after a change
Admin Settings › Server Groups › Show calls	—	Active calls per edge and voice server	Target one server group
Admin Settings › SIP Trunks	sipTrunk	Inbound SIP trunks	Configure an inbound SIP trunk
Admin Settings › SIP Trunks › Authentication Method	authMethod, ip_only, digest, ip_and_digest	Inbound trunk authentication	Authentication
Admin Settings › SIP Trunks › Identification Methods	identifyBy, allowedIps, fromDomainPattern, userAgentPattern	Trunk identification and allowed IPs	Identification: fill every selected condition
Admin Settings › SIP Trunks › Maintenance mode	maintenanceMode, maintenanceSipCode	Trunk maintenance mode	Reject new calls during trunk maintenance
Admin Settings › SIP Trunks › Max Concurrent Calls	maxConcurrentCalls	Trunk call limit field	Routing and technical fields
Admin Settings › SIP Trunks › Quick Templates	—	Trunk quick templates	List, templates and basic fields
Admin Settings › SIP Trunks › Routing and technical fields	isInternal, uniqueIdHeader, requiresXCall	Trunk routing and technical fields	Routing and technical fields
Admin Settings › SIP Trunks › Symmetric RTP	symmetricRtp	Trunk routing and technical fields	TLS and media
Admin Settings › SIP Trunks › trunk › SRTP Mode	srtpMode	SRTP media encryption	TLS and media
Admin Settings › SIP Trunks › trunk › TLS Security	tlsRequired, tlsVerifyCert, tlsRequireClientCert, tlsCaCertMaterialId, tlsPeerNameVerifyMode, tlsRemoteSubjectName	TLS checks on inbound trunks	TLS and media
Admin Settings › SIP Trunks › trunk details	—	Trunk active calls and reachability	Read trunk operational insights
Admin Settings › Sync Platform to TelPro	redisSync.syncAll, REDIS_SYNC_TIMEOUT_SECONDS	Sync platform and app configuration to Redis	Save, activate, disable or delete safely
Admin Settings › Teams	team.create	Create and provision a team	Create a team
Admin Settings › Tools	tool	Platform tools	Maintain a platform-wide tool
Admin Settings › Trace Debug	/admin-settings/trace-debug	Trace debug and log search	Find a trace without an open conversation
Admin Settings › Users	user	Create users and manage memberships	Create a new user
Admin Settings › Users › account status	suspendedAt	Suspend or re-enable product access	Suspend or re-enable product access
Admin Settings › Users › Platform role	USER, SUPERUSER, SUPERVIEWER	Platform roles	Change a platform role
Administration › Teams › Allowed API Scopes	allowedApiScopes	API key scopes	Check what is unavailable
Administration › Teams › Max Requests Per Day	maxRequestsPerDay	Daily API request limit per team	Read key usage and list controls
Administration › Usage & Metrics	adminUsage	Platform usage by team and app	Team and platform administration
Conversation record (read only)	terminationReason, reasonDetails, endReason	Call end categories	Transfers, hangups and keypad input
Header rule › Value	__SOURCE_VALUE__, __FROM_USER__, __TO_USER__, __CALL_ID__, __CALLED_NUMBER__, __TRUNK_ID__, __ORIGINAL_FROM__, __P_ASSERTED_IDENTITY__	Dynamic values in header rules	Value substitutions
Notifications	SCALE_UP_STARTED, SCALE_UP_COMPLETED, SCALE_UP_FAILED, SCALE_DOWN_STARTED, SCALE_DOWN_COMPLETED, SCALE_DOWN_FAILED	Scaling events and alerts	Review and acknowledge an alert
Plan catalogue	includedMinutes, includedTokens, includedSms, maxUsers, maxAdmins, qaScoringEnabled, priceMonthly, priceSemiannual, priceYearly	Plans and plan limits	Read usage and limits
Platform configuration › Transfer restrictions	blockPremiumNumbers, premiumPrefixes, premiumPatterns, enforceAllowedCountryCodes, allowedCountryCodes, defaultDomesticCountryCode, restrictSipUriWithoutPhone	Transfer destination restrictions	Other Platform Settings controls
Scaling Config JSON passed to provider scripts	SCALING_CONFIG_*, SCALING_SERVER_TYPE, HETZNER_API_TOKEN	Scaling providers and provisioning scripts	Pass provider configuration to scripts
SIP trunk and egress trunk › BYE size budget	sipByeMaxBytes, sipByeOverheadBytes	Per-trunk BYE size budget	Routing and technical fields
SIP trunk and egress trunk › Codec Preferences	codecPreferences, PCMA, PCMU, G722, OPUS	Voice codecs on SIP calls	Routing and technical fields
Telephony › Header Manipulation	HeaderManipulationConfig, HeaderManipulationRule, direction, action, priority, sourceHeader, conditions	SIP header manipulation rules at the edge	1. Create or open the correct configuration

Portal and feature profiles

Control	Names to search for	Feature	Owner section
Conversations › conversation › Telephony	—	Telephony details of a conversation	Transfers, hangups and keypad input
Deployment profile › Conversation QA scoring	qaScoring, FEATURE_QA_SCORING	Conversation QA scoring	Release profiles in the Portal
Deployment profile › SMS (seven.io)	sms, FEATURE_SMS	Send text messages from flows	Release profiles in the Portal
Deployment profile › Subscription management	subscriptionManagement, FEATURE_SUBSCRIPTION_MANAGEMENT	Subscription management	Release profiles in the Portal
Portal › Deployments	CONFIG_BUCKET, AWS_ACCOUNT_ID, DELPHI_PLATFORM_ROLE_ARN, DELPHI_EXTERNAL_ID	Portal configuration publishing	Optional, local and separately managed components
Portal › Feature profile › Additional AI providers	additionalProviders	Additional AI providers	Integration capabilities
Portal › Feature profile › AI Flow Builder	aiFlowBuilder	AI flow builder	Identify which condition is failing
Portal › Feature profile › Documentation assistant	algoliaAskAi	Documentation assistant (Ask AI)	Integration capabilities
Portal › Feature profile › Resilience controls	resilience	Resilience controls availability	Resilience controls
User menu › Settings	userSettings	Personal interface preferences	Change your interface preferences

Services and containers

Control	Names to search for	Feature	Owner section
API environment	API_TOKEN_HEADER	Authenticate API requests with a key header	API variables
API environment	TELAPI_SWAGGER_UI_ENABLED	OpenAPI description and interactive API explorer	API variables
API environment › credential retry settings	API_CREDENTIAL_*	Lockout after repeated failed API credentials	Credential retry jail
API environment › TLS settings	TLS_ENABLED, TLS_CERT_PATH, TLS_KEY_PATH, TLS_CA_PATH, TLS_REQUEST_CERT, TLS_REJECT_UNAUTHORIZED	Additional API authentication methods	API tokens and listener TLS
API environment › token settings	JWT_SECRET, JWT_ISSUER, JWT_AUDIENCE, JWT_EXPIRES_IN, OAUTH2_CLIENT_ID, OAUTH2_CLIENT_SECRET, OAUTH2_TOKEN_URL, OAUTH2_AUTHORIZE_URL	Additional API authentication methods	API tokens and listener TLS
API host environment	TELAPI_HOST, TELAPI_PORT, TELAPI_URL	TelAPI HTTP service	API variables
API service environment	FLOW_BRIEFING_CONVERSATION_MODEL, FLOW_BRIEFING_GENERATION_MODEL, ANTHROPIC_API_KEY, ANTHROPIC_BASE_URL	AI flow builder models and credentials	API variables
API service environment, listener TLS variables	TLS_ENABLED, TLS_CERT_PATH, TLS_KEY_PATH, TLS_CA_PATH, TLS_REQUEST_CERT, TLS_REJECT_UNAUTHORIZED, API_TLS_ENABLED	TLS on internal service listeners	Verify platform TLS
Bootstrap and tasker environment, edge TLS variables	EDGE_TLS_INPUT_MODE, EDGE_TLS_RENEWAL_THRESHOLD_DAYS, CERTBOT_EMAIL, HETZNER_API_TOKEN	Public edge certificates and renewal	Ops variables
Bootstrap environment, registry and tag variables	ECR_REGISTRY, ECR_TAG, APP_VERSION, BUILD_DATE	Container images and release tags	Bootstrap variables
Cloud credential for floating addresses	HCLOUD_TOKEN	Media floating address	TelPro variables
Edge and voice host environment, converter variables	LOG_TO_SPAN_OTLP_ENDPOINT, LOG_TO_SPAN_EXPORT_LOGS	Log-to-span conversion for SIP and media	Collectors on each role
Edge and voice runtime (no customer setting)	—	Number lookup and routing responses	Identify a routing response first
Feature environment	FEATURE_TTS_MEDIA_CACHE, TTS_MEDIA_CACHE_*	Cache synthesized speech for playback	Deployment choices and effective service configuration
Fixed platform catalogue (no setting)	conversation_complete, bot_timeout, no_media, media_connection_broken, stt_error, tts_error, internal_failure, policy_rejected, unknown_number, busy, handover	Platform termination causes and SIP mapping	Cause values and SIP responses are different
GET /api/config	/api/config	Web app configuration endpoint	Web UI feature conditions
Host bootstrap file	CONFIG_BUCKET, CONFIG_BASE_PATH, CONFIG_REF, SERVER_ROLE, FETCH_CONFIG_ATTEMPTS, FETCH_CONFIG_RETRY_DELAY	Provision and bootstrap hosts	Write the bootstrap file
Host environment, AWS variables	AWS_USE_INSTANCE_PROFILE, AWS_REGION, AWS_DEFAULT_REGION, AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN	AWS access and instance profile	Bootstrap variables
Host environment, collector and backend variables	OTEL_ENABLED, OTEL_BACKEND_HOST, OTEL_BACKEND_ENDPOINT, SIGNOZ_OTLP_GRPC_ENDPOINT, SIGNOZ_OTLP_HTTP_ENDPOINT	Role collectors and the telemetry pipeline	Collectors on each role
Host environment, proxy variables	HTTP_PROXY, HTTPS_PROXY, NO_PROXY, SMTP_PROXY, EGRESS_TLS_REJECT_UNAUTHORIZED, REDSOCKS_PROXY_HOST	Outbound egress proxy	Outbound access
Media environment	DOMAIN_MEDIA, MEDIA_ROOT, MEDIA_UPLOAD_LISTEN_ADDR, MEDIA_UPLOAD_TOKEN, TELPHI_MEDIA_*	Media upload and playback server	Media variables
Media host environment, media TLS variables	MEDIA_TLS_SOURCE, MEDIA_TLS_CERT_FILE, MEDIA_TLS_KEY_FILE, MEDIA_TLS_FULLCHAIN_B64, MEDIA_TLS_PRIVKEY_B64	TLS for the media and recording service	Establish and rotate Media HTTPS trust
Media upload environment	SYSTEM_AUDIO_STORAGE_BACKEND, SYSTEM_AUDIO_S3_*, SYSTEM_AUDIO_CACHE_*, SYSTEM_AUDIO_CLEANUP_TOKEN	System audio storage backend	Configure the services
Monitoring dashboards	—	Capacity planning and measurements	Plan ready capacity
Observability host environment	SIGNOZ_VERSION, SIGNOZ_DATA_DIR, CLICKHOUSE_IMAGE, DOMAIN_SIGNOZ	SigNoz observability host	SigNoz app, ingester and ClickHouse
Observability host environment, export collector variables	SIEM_HEC_ENDPOINT, SIEM_HEC_TOKEN, SIEM_HEC_INDEX, SIEM_HEC_CHANNEL, DYNATRACE_OTLP_ENDPOINT, DYNATRACE_API_TOKEN, OTEL_EXPORT_BACKEND_HOST, security_event	Security event export to a SIEM	2. Check the external feed separately
Ops environment	EMAIL_TRANSPORT, EMAIL_SENDER_ADDRESS, EMAIL_SENDER_NAME, SMTP_HOST, SMTP_PORT, SMTP_USER, SMTP_PASS, SMTP_PROXY	Email delivery	Configure and verify email delivery
Ops environment	TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN	Request and release phone numbers	Recover from payment or usage blocks
Ops environment	SCORING_OPENAI_BASE_URL, SCORING_OPENAI_MODEL	Scoring job and scoring failures	Configure the scoring job
Ops environment	SMS_API_KEY	Send text messages from flows	Check the effective configuration
Scaler and Tasker environment	LEADER_ELECTION_KEY, LEADER_LOCK_TTL_MS, LEADER_HEARTBEAT_INTERVAL_MS, LEADER_ACQUISITION_TIMEOUT_MS, TASKER_LEADER_ELECTION_KEY	Single active scaler and job runner	Ops variables
Scaler environment	SCALING_EVALUATION_INTERVAL_MS, SCALING_MAX_PARALLEL_BELOW_MIN_SCALE_UPS, SCALING_DRAIN_TIMEOUT_MS, SCALER_INSTANCE_ID, SCALER_LOG_LEVEL	Automatic scaling	Ops variables
Scaler environment	SCALING_SCRIPTS_PATH	Scaling providers and provisioning scripts	Ops variables
Scaler environment	STALE_SERVER_HEARTBEAT_SECONDS	Stale instance detection	Ops variables
Service environment file, per-component log level variables	LOG_LEVEL, TELWEB_LOG_LEVEL, TELAPI_LOG_LEVEL, TELPHI_LOG_LEVEL, TASKER_LOG_LEVEL, TELPRO_LOG_LEVEL, TELSYS_LOG_LEVEL, AUDIOPROC_LOG_LEVEL, RTPENGINE_LOG_LEVEL, WEBRTC_LOG_LEVEL	Service log levels	Set the level for each component
Service environment files per role	ENVIRONMENT, HOSTNAME, NODE_ENV, DOMAIN_API, DOMAIN_TELWEB, NEXT_PUBLIC_SIP_DOMAIN, PORT, HOST	Environment variable reference and deployment identity	Shared runtime variables
Service environment, database and Redis TLS variables	DATABASE_SSL_MODE, DATABASE_SSL_CA_FILE, DATABASE_SSL_CA_BUNDLE_B64, REDIS_TLS_ENABLED, REDIS_TLS_CA_FILE, POSTGRES_TLS_ENABLED, PGBOUNCER_CLIENT_TLS_SSLMODE	Encrypted database and Redis connections	Verify internal database and Redis encryption
Service environment, database logging switch	ENABLE_DB_LOGGING	Database projection of log records	Database projection
Service environment, database variables	DATABASE_URL, DATABASE_SECRET_MODE, DATABASE_SECRET_ARN, MIGRATION_DATABASE_URL, DATABASE_POOL_SIZE	Database connection and credentials	Select the runtime credential source
Service environment, FEATURE_* variables	FEATURE_SMS, FEATURE_BROWSER_SDK, FEATURE_WEBRTC, FEATURE_RESILIENCE, FEATURE_QA_SCORING	Deployment feature switches	Deployment choices and effective service configuration
Service environment, integration payload logging switch	LOG_INTEGRATION_PAYLOADS	Integration transaction records	Control payload logging
Service environment, masking variables	MSISDN_UNMASKED_DIGITS, ENABLE_PII_LOGGING	Redaction of personal data in logs	Protect diagnostic logs before sharing
Service environment, OpenTelemetry exporter variables	OTEL_EXPORTER_OTLP_ENDPOINT, OTEL_SERVICE_NAME, OTEL_SERVICE_NAMESPACE, OTEL_DEPLOYMENT_ENVIRONMENT	Distributed tracing and call correlation	Correlation
Service environment, Redis variables	REDIS_HOST, REDIS_PORT, REDIS_USERNAME, REDIS_PASSWORD, REDIS_DATABASE	Redis connection	Shared runtime variables
Setup command and unattended setup variables	DELPHI_SETUP_EMAIL, DELPHI_SETUP_PASSWORD, DELPHI_SETUP_TEAM_NAME, DELPHI_SETUP_BASE_NUMBER, RUN_BASELINE_SEED	First-use setup and baseline data	Run first-use setup
Setup command environment	DELPHI_RESET_PASSWORD	Recover Super Admin access	Reset an existing credential Super Admin
Shared environment	GRACE_PERIOD_DAYS	Payment failure and grace period	Recover from payment or usage blocks
Shared logger package used by every Node service	logType, severity, conversationId, traceId, service.name	Log record fields and event types	Common fields and representations
SIP edge configuration (no customer setting)	fr_timer, fr_inv_timer	SIP transaction and dialog timers	Timers and retransmission
SIP edge routing (no customer setting)	OPTIONS	OPTIONS keepalive	Request handling and trunk health
SIP edge routing (no customer setting)	—	Rejected and unknown SIP traffic	Rejected calls and security tagging
SIP edge routing (no customer setting)	sl_send_reply	Responses generated by the edge	Responses generated by the edge
SIP edge routing (no customer setting)	INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, UPDATE, PRACK, INFO	Supported SIP methods	SIP methods
Tasker cron schedule and retention variables	audit-log-cleanup, AUDIT_LOG_RETENTION_DAYS, SIGNOZ_RETENTION_DAYS	Audit and log retention	4. Establish retention for each copy
Tasker environment, backup target variables	backup-database, S3_BUCKET, S3_PREFIX, S3_REGION, S3_ENDPOINT	Database backups and restore	Database backup and restore
Tasker environment, worker and leader variables	WORKER_CONCURRENCY, WORKER_POLL_INTERVAL_MS, SCHEDULER_POLL_INTERVAL_MS, LEADER_ELECTION_KEY, LEADER_LOCK_TTL_MS	Background jobs and schedules	Ops variables
TelPhi and TelAPI environment	HEARTBEAT_INTERVAL, RESOURCE_MONITOR_INTERVAL, USAGE_MONITOR_INTERVAL, USAGE_MONITOR_HEARTBEAT_INTERVAL_MS, TELPHI_INSTANCE_ID, TELAPI_INSTANCE_ID, INSTANCE_ID	Instance heartbeats and usage reports	Voice variables
TelPhi environment	MAX_CONCURRENT_CALLS	Concurrent call limit per voice instance and group	Voice variables
TelPhi environment	BOT_NO_INPUT_GIVE_UP_TIMEOUT_MS, BOT_NO_INPUT_GIVE_UP_WARNING_MESSAGE, BOT_NO_INPUT_GIVE_UP_URL	Give up when the bot stops responding	Voice variables
TelPhi environment	MAX_CALL_DURATION_SECONDS, MAX_CALL_DURATION_WARNING_MESSAGE, WARNING_TIMEOUT	Maximum call duration	Voice variables
TelPhi environment	MAX_CALL_AGE_MS	Stale call clean-up	Stale calls and resumable sessions
TelPhi environment	SIP_TRUNK_HEALTH_INTERVAL_MS, SIP_TRUNK_HEALTH_FAILURE_THRESHOLD, SIP_TRUNK_HEALTH_DEGRADED_RTT_MS, SIP_TRUNK_HEALTH_REDIS_TTL_MS	Trunk health monitoring and alerts	Voice variables
TelPro environment	TELPRO_ROUTING_PROVIDER, TELPRO_ROUTING_ENDPOINT, TELPRO_ROUTING_TARGET_IDS, TELPRO_ROUTING_TOKEN, configured-http	Edge routing handover integration	TelPro variables
TelPro environment	TELPRO_FLOATING_IP_BIND_ENABLED, TELPRO_MEDIA_FLOATING_IP_ID, TELPRO_MEDIA_INTERFACE	Media floating address	Bind the floating media address
TelPro environment	PUBLIC_IP, PRIVATE_IP, EXTERNAL_IP, HOST_LAN_IP	Public and private edge addresses (NAT)	TelPro variables
TelPro environment	DOMAIN_TELPRO, SIP_DOMAIN, KAMAILIO_INSTANCE_ID, KAMAILIO_LOG_LEVEL	SIP edge proxy	TelPro variables
TelPro environment	SIP_PORT, SIPS_PORT, SIP_TLS_PORT, INTERNAL_SIP_PORT, SIP_PORT_INTERNAL, TLS_ENABLED	SIP transports and ports	TelPro variables
TelPro environment	HEALTH_PROBE_ENABLED, HEALTH_PROBE_INTERVAL, HEALTH_PROBE_TARGET_HOST, HEALTH_PROBE_TARGET_PORT, HEALTH_PROBE_TIMEOUT, HEALTH_PROBE_TRUNK_IDS	Trunk health probes	TelPro variables
TelPro environment	TELPRO_HA_ENABLED, TELPRO_GROUP_NAME, TELPRO_INITIAL_ACTIVE_INSTANCE_ID, TELPRO_PEER_INSTANCE_ID, TELPRO_PEER_PROVIDER_SERVER_ID, TELPRO_PROVIDER_SERVER_ID, TELPRO_SIP_FLOATING_IP_ID, FLOATING_IP, HCLOUD_TOKEN	Two-edge high availability	TelPro variables
TelPro environment	TELSYS_LB_METHOD	Voice host selection by the edge	TelPro variables
TelPro environment, SIP capture variables	SIP_CAPTURE_ENABLED	SIP message capture	SIP message captures
TelPro environment, structured logging switch	STRUCTURED_LOGGING_ENABLED	SIP edge log records	Structured SIP proxy records
TelPro health endpoint	—	SIP edge health	Check edge health
TelSys and TelPhi environment	ARI_URL, ARI_USER, ARI_PASSWORD, ARIAPP, ARIENABLED, ARIBINDMASK, ARIHTTPSESSIONLIMIT, AMI_HOST, AMI_PORT, AMI_USER, AMI_SECRET	Voice service control interface (ARI and AMI)	Voice variables
TelSys environment	SIP_100REL_MODE	Reliable provisional responses (100rel and PRACK)	Voice variables
TelSys PJSIP endpoint template	dtmf_mode=rfc4733, telephone-event	DTMF transport over SIP (RFC 4733)	Codecs and DTMF
Voice and API service environment	AZURE_TTS_API_KEY, AZURE_REGION	Speech synthesis providers (OpenAI, Azure, Inworld)	Voice variables
Voice and edge media configuration (no customer setting)	—	SDP, codecs and number format at the edge	Codecs and DTMF
Voice and TelPro environment	REFER_TARGET_HOST, DOMAIN_TELPRO	REFER target host	Voice variables
Voice environment	AUDIOPROC_ENABLED, FEATURE_AUDIO_PREPROCESSING	Audio preprocessing and noise reduction	AudioProc
Voice host environment, Asterisk and ARI variables	ARI_URL, ARI_USER, ARI_PASS, ARI_APP, ARIHTTPSESSIONLIMIT, EXTERNALADDRESS	Voice service operation	Roles and the ARI connection
Voice host environment, media and console logging variables	TELPHI_ENABLE_MEDIA_LOGGING, ENABLE_MEDIA_LOGGING, ENABLE_PACKET_LOGGING, LOG_MEDIA_EVERY_N_PACKETS	Voice service and media diagnostic logs	Read Voice logs
Voice runtime (format fixed; limits per app)	Reason, X-Transfer-Reason	SIP termination headers	Diagnostic header formats
Voice runtime (no customer setting)	StasisStart	Handoff of an inbound call to the voice runtime	Follow the request path
Voice runtime (no customer setting)	X-Delphi-Egress-Intent-ID, X-Delphi-Egress-Route	Outbound call intent correlation	Follow the transfer method and the new
Voice runtime and SIP edge (no customer setting)	—	Final SIP response for calls that never connect	Cause values and SIP responses are different
Voice runtime catalogue (no setting)	flow_engine_complete, flow_engine_error, provider_initialization_failed, stt_provider_error, tts_provider_error, sip_channel_setup_failed, flow_lookup_redis_error, provider_stop, provider_destroy, transferred	Detailed hangup triggers	Cause values and SIP responses are different
Voice service environment	AZURE_STT_AUDIO_FLUSH_MS, AZURE_REGION	Azure speech recognition	Voice variables
Voice service environment	GPT_LIVE_PILOT_ENABLED	OpenAI GPT-Live (pilot)	Voice variables
Web and API environment	FEATURE_REGISTRATION	Self-service registration	Web UI feature conditions
Web and ops environment	PASSWORD_MAX_AGE_DAYS, PASSWORD_WARNING_DAYS, PASSWORD_RESET_TOKEN_MINUTES	Password expiry, change and reset	Change an expiring password
Web and ops environment	STRIPE_SECRET_KEY, STRIPE_WEBHOOK_SECRET, STRIPE_API_BASE_URL	Stripe payments and billing events	Shared runtime variables
Web and ops environment	PLATFORM_ROLE_EMAIL_CODE_SECRET, PLATFORM_ROLE_EMAIL_TASKER_READY	Verified platform role change	Change a platform role
Web environment	AUTH_WITH_MICROSOFT, AUTH_MICROSOFT_ENTRA_ID_ID, AUTH_MICROSOFT_ENTRA_ID_SECRET, AUTH_MICROSOFT_ENTRA_ID_ISSUER	Microsoft Entra single sign-on	Check Microsoft Entra prerequisites
Web environment	SESSION_TIMEOUT, MAX_CONCURRENT_SESSIONS, SESSION_HEARTBEAT_TTL	Session idle timeout and concurrent sessions	Understand an ended or refused session
Web environment	AUTH_WITH_CREDENTIALS	Sign in with email and password	Web variables
Web environment	LOGIN_MAX_ATTEMPTS_CREDENTIALS, LOGIN_LOCKOUT_MINUTES_CREDENTIALS, LOGIN_MAX_ATTEMPTS_AZURE_AD, LOGIN_LOCKOUT_MINUTES_AZURE_AD	Sign-in lockout after failed attempts	Reset a forgotten password or unlock a
Web environment	WELCOME_INVITATION_TOKEN_MINUTES	Welcome invitation and first setup	Complete or resend a password invitation
Web service environment	FEATURE_ADDITIONAL_PROVIDERS	Additional AI providers	Web UI feature conditions
Web service environment	FEATURE_AI_FLOW_BUILDER	AI flow builder	Web UI feature conditions
Web service environment	FEATURE_ALGOLIA_ASK_AI	Documentation assistant (Ask AI)	Web UI feature conditions
Web service environment	FEATURE_RESILIENCE	Resilience controls availability	Resilience controls
Web service environment, banner variables	LEGAL_BANNER_TEXT, LEGAL_BANNER_HTML	Legal notice banner	Web variables
Web service environment, trusted reverse-proxy hops for client address	AUDIT_TRUSTED_PROXY_HOPS	Audit log of administrative actions	Web variables

HTTP API

Control	Names to search for	Feature	Owner section
Create browser session tokens	sessionId, wsToken, wsTokenExpiresIn, expiresIn	Create browser session tokens	2. Put token creation behind your backend
GET /api/v1/endpoints	/api/v1/endpoints	List a team's call endpoints over the API	2. Send a bounded read-only request
GET /api/v1/runtime/capabilities	/api/v1/runtime/capabilities	Runtime capabilities endpoint	Runtime capabilities and voice
GET /api/v1/usage/tts-characters	/api/v1/usage/tts-characters, READ_TEAM_USAGE	Text-to-speech usage over the API	Read team TTS usage
Query parameters	page, limit, total, totalPages	Paged API responses	3. Read further pages deliberately
Request header	X-API-Key	Authenticate API requests with a key header	1. Select the operation and credential
Runtime command hangup	hangup	Hang up from a flow or a bot	End: finish the branch

Browser SDK

Control	Names to search for	Feature	Owner section
Browser text and voice entry points	—	Browser text and voice entry points	1. Prepare the endpoint and credentials
Browser text conversations	openSession, sendTextChat, serverReady	Browser text conversations	Text conversation
Browser voice calls	startCall, setRemoteAudioElement, endCall	Browser voice calls	Voice call
Discover browser runtime capabilities	getCapabilities, interactionModes	Discover browser runtime capabilities	3. Configure the client and discover support
Move between text and voice	—	Move between text and voice	Move between text and voice
Recover browser sessions	connectionState, lastError	Recover browser sessions	Recover a browser session
SDK and protocol compatibility	DelphiClient	SDK and protocol compatibility	Keep client and protocol versions explicit
Session WebSocket channel	/ws/session, ChannelMessage	Session WebSocket channel	Understand the browser channel
Type during voice calls	—	Type during voice calls	Type during a voice call

By reader role

Application builders

Calls and call lifecycle

• Calls refused before answer — Application builders
• Maximum call duration — Application builders
• Give up when the bot stops responding — Application builders
• Media connection warning and disconnect — Application builders
• Hang up from a flow or a bot — Application builders
• Call end categories — Application builders
• Telephony details of a conversation — Application builders

SIP trunks, numbers and routing

• Outbound routing pools — Application builders
• Extensions on a base number — Application builders

SIP headers and call data

• Inbound SIP headers available to the call — Application builders
• Read a SIP header in a flow — Application builders
• Send SIP headers on hangup and transfer — Application builders
• Optional SIP header budget — Application builders

Call transfers

• Transfer a call from a flow — Application builders
• Transfer methods (REFER, INVITE, BYE) — Application builders
• Blind or notify REFER outcome — Application builders
• Attended transfer through the platform — Application builders
• Transfer target, routing pool and caller ID — Application builders
• Ring time for the transfer target — Application builders
• Headers and URI parameters on a transfer — Application builders
• Transfer result and resume after failure — Application builders
• Diagnose blocked and failed transfers — Application builders
• Transfers from browser voice calls — Application builders
• Transfer when the bot stops answering — Application builders
• Audio while a transfer is in progress — Application builders

DTMF

• Collect keypad digits in a flow — Application builders
• Let a voice agent collect digits — Application builders
• Select an extension by keypad before the flow starts — Application builders
• Keypad input in recordings and transcripts — Application builders
• Review and diagnose keypad input — Application builders

Media, audio and speech

• Audio format between the voice service and the AI runtime — Application builders
• AI input and output audio format — Application builders
• Audio preprocessing and noise reduction — Application builders
• Barge-in while the bot is speaking — Application builders
• Play system audio on call events — Application builders
• Cache synthesized speech for playback — Application builders
• Speech recognition providers — Application builders
• Speech context phrases — Application builders
• Speech synthesis providers and voices — Application builders
• Detect and switch the caller's language — Application builders
• Flow primary language and language switching — Application builders

AI providers and models

• Pipeline modes (unified realtime, modular voice, TTS only, LLM only) — Application builders
• Configure the AI provider of a flow — Application builders
• Override the provider on a single step — Application builders
• OpenAI Realtime — Application builders
• OpenAI GPT-Live (pilot) — Application builders
• Azure OpenAI Realtime — Application builders
• xAI Grok Realtime — Application builders
• Google Gemini Live — Application builders
• Pythia Realtime — Application builders
• Realtime turn detection and transcription settings — Application builders
• OpenAI Chat language model — Application builders
• Azure speech recognition — Application builders
• Inworld speech recognition — Application builders
• Speech synthesis providers (OpenAI, Azure, Inworld) — Application builders
• Provider credentials and key references — Application builders
• Custom provider endpoints — Application builders
• Additional AI providers — Application builders
• AI-side audio format — Application builders

Resilience, retries and fallbacks

• Resilience defaults and inheritance — Application builders
• Provider timeouts, retries and reconnects — Application builders
• Retry on selected HTTP status codes — Application builders
• Alternate speech recognition and synthesis providers — Application builders
• Flow-level resilience settings — Application builders
• Feedback while the bot is slow to answer — Application builders
• Final call actions on runtime failure — Application builders

Flows and the flow builder

• Applications and their flows — Application builders
• Flow builder canvas — Application builders
• Flow step types — Application builders
• Conversation step (voice agent) — Application builders
• Actions an agent can call — Application builders
• Text chat step — Application builders
• Speech playback step — Application builders
• Language model query step — Application builders
• Speech transcription step — Application builders
• Live interpretation step — Application builders
• Decision step — Application builders
• External service step — Application builders
• Action request step — Application builders
• Transitions between steps — Application builders
• Flow data and variables — Application builders
• Side flows — Application builders
• Application entry points — Application builders
• Flow settings — Application builders
• Shared voice flow — Application builders
• Flow templates — Application builders
• Flow source view and import — Application builders
• Drafts and publishing — Application builders
• Flow version history and restore — Application builders
• Shared draft editing and takeover — Application builders
• AI flow builder — Application builders
• Team tools — Application builders
• Tool code and its runtime helpers — Application builders
• Documentation assistant (Ask AI) — Application builders

HTTP API

• Allowed origins and IP addresses for browser endpoints — Application builders

Recordings, transcripts and data privacy

• Choose what an app records — Application builders
• Recording output files — Application builders
• Call transcripts — Application builders
• Recording processing and playback — Application builders
• Delete a call's recordings — Application builders
• Sensitive information protection in recordings — Application builders

Accounts, teams and access

• Team variables and secrets — Application builders
• Personal interface preferences — Application builders

Plans, usage, notifications and SMS

• In-app notifications — Application builders
• Send text messages from flows — Application builders

Logs, traces and monitoring

• Conversation debug view (logs, span tree, SIP ladder) — Application builders

Deployment and operations

• Enabled features overview — Application builders

Quality, dashboards and analytics

• Conversation QA scoring — Application builders
• QA scoring per app — Application builders
• Review a conversation's QA result — Application builders
• Dashboard reporting period — Application builders
• Dashboard widgets — Application builders
• Call and usage metrics — Application builders
• Caller satisfaction on the dashboard — Application builders
• Conversation history and review — Application builders

Team administrators

Calls and call lifecycle

• Calls refused before answer — Team administrators
• Media connection warning and disconnect — Team administrators
• Call end categories — Team administrators
• Telephony details of a conversation — Team administrators

SIP trunks, numbers and routing

• Trunk health monitoring and alerts — Team administrators
• Base numbers — Team administrators
• Assign numbers to teams — Team administrators

SIP headers and call data

• SIP header manipulation rules at the edge — Team administrators
• Dynamic values in header rules — Team administrators
• Assign header rule sets to a base number — Team administrators
• Per-trunk BYE size budget — Team administrators

Call transfers

• Transfer target, routing pool and caller ID — Team administrators
• Transfer destination restrictions — Team administrators

DTMF

• Select an extension by keypad before the flow starts — Team administrators

Media, audio and speech

• Voice codecs on SIP calls — Team administrators
• System audio library — Team administrators

AI providers and models

• Provider credentials and key references — Team administrators
• Platform-managed default keys and AI defaults — Team administrators

Resilience, retries and fallbacks

• Resilience controls availability — Team administrators
• Resilience defaults and inheritance — Team administrators
• Provider timeouts, retries and reconnects — Team administrators
• Retry on selected HTTP status codes — Team administrators
• Final call actions on runtime failure — Team administrators

Flows and the flow builder

• Flow templates — Team administrators
• Team tools — Team administrators
• Documentation assistant (Ask AI) — Team administrators

HTTP API

• Team API keys — Team administrators
• API key scopes — Team administrators
• Daily API request limit per team — Team administrators
• Text-to-speech usage over the API — Team administrators

Recordings, transcripts and data privacy

• Choose what an app records — Team administrators
• Team recording storage bucket — Team administrators
• Recording retention — Team administrators
• Delete a call's recordings — Team administrators
• Sensitive information protection in recordings — Team administrators

Accounts, teams and access

• Sign in with email and password — Team administrators
• Microsoft Entra single sign-on — Team administrators
• Sign-in lockout after failed attempts — Team administrators
• Session idle timeout and concurrent sessions — Team administrators
• Password expiry, change and reset — Team administrators
• Welcome invitation and first setup — Team administrators
• Platform roles — Team administrators
• Team roles — Team administrators
• Let members publish apps — Team administrators
• Create users and manage memberships — Team administrators
• Suspend or re-enable product access — Team administrators
• Team settings — Team administrators
• Team variables and secrets — Team administrators
• Team secret storage in AWS — Team administrators
• Personal interface preferences — Team administrators
• Documentation reader accounts — Team administrators

Plans, usage, notifications and SMS

• Subscription management — Team administrators
• Current usage and usage history — Team administrators
• Plans and plan limits — Team administrators
• Overage spending cap and notification thresholds — Team administrators
• Change plan or billing interval — Team administrators
• Cancel, undo cancellation or resubscribe — Team administrators
• Payment failure and grace period — Team administrators
• Overage billing — Team administrators
• Custom agreements — Team administrators
• Self-service registration — Team administrators
• Legal documents and consent — Team administrators
• Request and release phone numbers — Team administrators
• In-app notifications — Team administrators
• Usage and overage alerts — Team administrators
• Text message allowance and usage — Team administrators

Logs, traces and monitoring

• Call detail records — Team administrators
• Audit log of administrative actions — Team administrators
• Conversation debug view (logs, span tree, SIP ladder) — Team administrators

Scaling, capacity and high availability

• Scaling events and alerts — Team administrators

Deployment and operations

• Enabled features overview — Team administrators

Quality, dashboards and analytics

• Conversation QA scoring — Team administrators
• QA scoring defaults for the platform and teams — Team administrators
• Review a conversation's QA result — Team administrators
• Dashboard reporting period — Team administrators
• Dashboard widgets — Team administrators
• Call and usage metrics — Team administrators
• Caller satisfaction on the dashboard — Team administrators
• Conversation history and review — Team administrators

Deployment operators

Calls and call lifecycle

• Final SIP response for calls that never connect — Deployment operators
• Maximum call duration — Deployment operators
• Stale call clean-up — Deployment operators
• Give up when the bot stops responding — Deployment operators
• Media connection warning and disconnect — Deployment operators
• Resumable call sessions — Deployment operators
• Call end categories — Deployment operators
• Platform termination causes and SIP mapping — Deployment operators
• Detailed hangup triggers — Deployment operators

SIP signalling and telephony edge

• SIP edge proxy — Deployment operators
• SIP transports and ports — Deployment operators
• Responses generated by the edge — Deployment operators
• Reliable provisional responses (100rel and PRACK) — Deployment operators
• Public and private edge addresses (NAT) — Deployment operators
• Voice host selection by the edge — Deployment operators
• Voice service control interface (ARI and AMI) — Deployment operators
• Handoff of an inbound call to the voice runtime — Deployment operators
• Rejected and unknown SIP traffic — Deployment operators
• SIP edge health — Deployment operators

SIP trunks, numbers and routing

• Inbound SIP trunks — Deployment operators
• Trunk quick templates — Deployment operators
• Trunk identification and allowed IPs — Deployment operators
• Inbound trunk authentication — Deployment operators
• Trunk routing and technical fields — Deployment operators
• Trunk call limit field — Deployment operators
• Trunk maintenance mode — Deployment operators
• Trunk active calls and reachability — Deployment operators
• Trunk health probes — Deployment operators
• Trunk health monitoring and alerts — Deployment operators
• Outbound (egress) trunks — Deployment operators
• Outbound routing methods and contact-centre trunks — Deployment operators
• Outbound trunk authentication and registration — Deployment operators
• Outbound caller ID — Deployment operators
• Outbound routing pools — Deployment operators
• Platform default outbound route — Deployment operators
• Outbound trunk failover — Deployment operators
• Outbound call intent correlation — Deployment operators
• Base numbers — Deployment operators
• Assign numbers to teams — Deployment operators
• Extensions on a base number — Deployment operators
• Number lookup and routing responses — Deployment operators

SIP headers and call data

• SIP header manipulation rules at the edge — Deployment operators
• Dynamic values in header rules — Deployment operators
• Per-trunk BYE size budget — Deployment operators
• Trace headers on SIP messages — Deployment operators
• Carrier REFER normalization — Deployment operators

Call transfers

• Transfer destination restrictions — Deployment operators
• Diagnose blocked and failed transfers — Deployment operators
• REFER target host — Deployment operators

DTMF

• DTMF transport over SIP (RFC 4733) — Deployment operators
• Keypad input in recordings and transcripts — Deployment operators
• Review and diagnose keypad input — Deployment operators

Media, audio and speech

• Audio preprocessing and noise reduction — Deployment operators
• System audio storage backend — Deployment operators
• Cache synthesized speech for playback — Deployment operators
• Media upload and playback server — Deployment operators

AI providers and models

• OpenAI GPT-Live (pilot) — Deployment operators
• Platform-managed default keys and AI defaults — Deployment operators
• Additional AI providers — Deployment operators

Resilience, retries and fallbacks

• Resilience controls availability — Deployment operators
• Resilience defaults and inheritance — Deployment operators

Flows and the flow builder

• AI flow builder models and credentials — Deployment operators
• Platform tools — Deployment operators
• Documentation assistant (Ask AI) — Deployment operators

HTTP API

• TelAPI HTTP service — Deployment operators
• Daily API request limit per team — Deployment operators
• Additional API authentication methods — Deployment operators
• Lockout after repeated failed API credentials — Deployment operators
• API rate limits — Deployment operators
• OpenAPI description and interactive API explorer — Deployment operators
• Web app configuration endpoint — Deployment operators

Recordings, transcripts and data privacy

• Recording output files — Deployment operators
• Call transcripts — Deployment operators
• Team recording storage bucket — Deployment operators
• Recording retention — Deployment operators
• Recording processing and playback — Deployment operators
• Sensitive information protection in recordings — Deployment operators

Accounts, teams and access

• Sign in with email and password — Deployment operators
• Microsoft Entra single sign-on — Deployment operators
• Sign-in lockout after failed attempts — Deployment operators
• Session idle timeout and concurrent sessions — Deployment operators
• Password expiry, change and reset — Deployment operators
• Platform roles — Deployment operators
• Verified platform role change — Deployment operators
• Create users and manage memberships — Deployment operators
• Suspend or re-enable product access — Deployment operators
• Recover Super Admin access — Deployment operators
• Create and provision a team — Deployment operators
• Decommission a team — Deployment operators
• Team secret storage in AWS — Deployment operators
• Interface languages and translations — Deployment operators
• Documentation reader accounts — Deployment operators

Plans, usage, notifications and SMS

• Subscription management — Deployment operators
• Plans and plan limits — Deployment operators
• Payment failure and grace period — Deployment operators
• Stripe payments and billing events — Deployment operators
• Overage billing — Deployment operators
• Custom agreements — Deployment operators
• Self-service registration — Deployment operators
• Legal documents and consent — Deployment operators
• Request and release phone numbers — Deployment operators
• Cleanup after cancellation — Deployment operators
• Notification types — Deployment operators
• Email delivery — Deployment operators
• Send text messages from flows — Deployment operators

Logs, traces and monitoring

• Log record fields and event types — Deployment operators
• Service log levels — Deployment operators
• Call detail records — Deployment operators
• Audit log of administrative actions — Deployment operators
• Access logs (sign-in and access events) — Deployment operators
• Audit and log retention — Deployment operators
• Security event export to a SIEM — Deployment operators
• Integration transaction records — Deployment operators
• Redaction of personal data in logs — Deployment operators
• Database projection of log records — Deployment operators
• Role collectors and the telemetry pipeline — Deployment operators
• Distributed tracing and call correlation — Deployment operators
• Host and infrastructure metrics — Deployment operators
• SigNoz observability host — Deployment operators
• SigNoz connection for the web application — Deployment operators
• Monitoring dashboards — Deployment operators
• Alert rules and voice service heartbeat — Deployment operators
• Trace debug and log search — Deployment operators
• Conversation debug view (logs, span tree, SIP ladder) — Deployment operators
• SIP edge log records — Deployment operators
• SIP message capture — Deployment operators
• Log-to-span conversion for SIP and media — Deployment operators
• Voice service and media diagnostic logs — Deployment operators
• Operation events — Deployment operators
• SIP trunk probe and health records — Deployment operators
• Service health and readiness checks — Deployment operators

Scaling, capacity and high availability

• Server groups — Deployment operators
• Automatic scaling — Deployment operators
• Scaling providers and provisioning scripts — Deployment operators
• Concurrent call limit per voice instance and group — Deployment operators
• Load balancing across voice instances — Deployment operators
• Instance heartbeats and usage reports — Deployment operators
• Stale instance detection — Deployment operators
• Single active scaler and job runner — Deployment operators
• Server group maintenance (drain, resume, refresh, restart) — Deployment operators
• Draining an edge — Deployment operators
• Two-edge high availability — Deployment operators
• Edge routing handover integration — Deployment operators
• Media floating address — Deployment operators
• Edge instance overview — Deployment operators
• Active calls per edge and voice server — Deployment operators
• Voice server inventory — Deployment operators
• Scaling events and alerts — Deployment operators
• Capacity planning and measurements — Deployment operators

Security, TLS and network

• SIP over TLS at the edge — Deployment operators
• TLS checks on inbound trunks — Deployment operators
• TLS and mutual authentication on egress trunks — Deployment operators
• SRTP media encryption — Deployment operators
• Activate trunk certificates and trust material — Deployment operators
• Platform secrets and secret storage — Deployment operators
• Public edge certificates and renewal — Deployment operators
• TLS for the media and recording service — Deployment operators
• Encrypted database and Redis connections — Deployment operators
• TLS on internal service listeners — Deployment operators
• Outbound egress proxy — Deployment operators
• Network ports, allowed sources and firewall — Deployment operators
• Edge source verification and call token checks — Deployment operators

Deployment and operations

• Deployment prerequisites — Deployment operators
• AWS access and instance profile — Deployment operators
• Container images and release tags — Deployment operators
• Provision and bootstrap hosts — Deployment operators
• First-use setup and baseline data — Deployment operators
• Service roles and topology — Deployment operators
• Environment variable reference and deployment identity — Deployment operators
• Configuration layers and activation — Deployment operators
• Apply an update to the hosts — Deployment operators
• Release compatibility and upgrade notes — Deployment operators
• Service refresh and server group maintenance — Deployment operators
• Sync platform and app configuration to Redis — Deployment operators
• Background jobs and schedules — Deployment operators
• Configuration snapshots and backups — Deployment operators
• Recover deployment configuration — Deployment operators
• Database backups and restore — Deployment operators
• Database connection and credentials — Deployment operators
• Redis connection — Deployment operators
• Voice service operation — Deployment operators
• Legal notice banner — Deployment operators
• Platform settings — Deployment operators
• Deployment feature switches — Deployment operators
• Portal feature profiles — Deployment operators
• Portal configuration publishing — Deployment operators

Quality, dashboards and analytics

• Conversation QA scoring — Deployment operators
• QA scoring defaults for the platform and teams — Deployment operators
• Scoring job and scoring failures — Deployment operators
• Platform usage by team and app — Deployment operators

Integrators

Calls and call lifecycle

• Calls refused before answer — Integrators
• Final SIP response for calls that never connect — Integrators
• Resumable call sessions — Integrators
• Hang up from a flow or a bot — Integrators
• Platform termination causes and SIP mapping — Integrators
• Detailed hangup triggers — Integrators

SIP signalling and telephony edge

• SIP edge proxy — Integrators
• SIP transports and ports — Integrators
• Supported SIP methods — Integrators
• Responses generated by the edge — Integrators
• OPTIONS keepalive — Integrators
• Reliable provisional responses (100rel and PRACK) — Integrators
• SIP transaction and dialog timers — Integrators
• SDP, codecs and number format at the edge — Integrators
• Public and private edge addresses (NAT) — Integrators
• SIP termination headers — Integrators
• Handoff of an inbound call to the voice runtime — Integrators

SIP trunks, numbers and routing

• Inbound SIP trunks — Integrators
• Trunk identification and allowed IPs — Integrators
• Inbound trunk authentication — Integrators
• Trunk routing and technical fields — Integrators
• Outbound (egress) trunks — Integrators
• Outbound routing methods and contact-centre trunks — Integrators
• Outbound trunk authentication and registration — Integrators
• Outbound caller ID — Integrators
• Outbound trunk failover — Integrators
• Number lookup and routing responses — Integrators

SIP headers and call data

• Inbound SIP headers available to the call — Integrators
• Send SIP headers on hangup and transfer — Integrators
• SIP header name validation — Integrators
• Transfer reason on the new call leg — Integrators
• Custom headers passed to carriers — Integrators
• Reserved and internal SIP headers — Integrators
• Optional SIP header budget — Integrators
• Carrier REFER normalization — Integrators

Call transfers

• Transfer methods (REFER, INVITE, BYE) — Integrators
• Blind or notify REFER outcome — Integrators
• Attended transfer through the platform — Integrators
• Media path after an INVITE transfer — Integrators
• Headers and URI parameters on a transfer — Integrators
• Transfer result and resume after failure — Integrators

DTMF

• DTMF transport over SIP (RFC 4733) — Integrators

Media, audio and speech

• Voice codecs on SIP calls — Integrators
• Audio format between the voice service and the AI runtime — Integrators
• Barge-in while the bot is speaking — Integrators

AI providers and models

• Pythia Realtime — Integrators
• Custom provider endpoints — Integrators

Flows and the flow builder

• External service step — Integrators
• Action request step — Integrators
• Flow source view and import — Integrators
• Tool code and its runtime helpers — Integrators

Browser and SDK

• Browser text and voice entry points — Integrators
• Create browser session tokens — Integrators
• Discover browser runtime capabilities — Integrators
• Browser text conversations — Integrators
• Browser voice calls — Integrators
• Session WebSocket channel — Integrators
• Recover browser sessions — Integrators
• Move between text and voice — Integrators
• Type during voice calls — Integrators
• Browser action capabilities — Integrators
• SDK and protocol compatibility — Integrators

HTTP API

• TelAPI HTTP service — Integrators
• Team API keys — Integrators
• API key scopes — Integrators
• Authenticate API requests with a key header — Integrators
• Additional API authentication methods — Integrators
• Lockout after repeated failed API credentials — Integrators
• API rate limits — Integrators
• List a team's call endpoints over the API — Integrators
• Paged API responses — Integrators
• API error responses — Integrators
• Runtime capabilities endpoint — Integrators
• Text-to-speech usage over the API — Integrators
• OpenAPI description and interactive API explorer — Integrators
• Allowed origins and IP addresses for browser endpoints — Integrators

Recordings, transcripts and data privacy

• Recording output files — Integrators

Logs, traces and monitoring

• Log record fields and event types — Integrators
• Call detail records — Integrators
• Integration transaction records — Integrators
• Distributed tracing and call correlation — Integrators
• SIP edge log records — Integrators

Security, TLS and network

• SIP over TLS at the edge — Integrators
• TLS checks on inbound trunks — Integrators
• TLS and mutual authentication on egress trunks — Integrators
• SRTP media encryption — Integrators
• Network ports, allowed sources and firewall — Integrators
• Edge source verification and call token checks — Integrators

Deployment and operations

• Service roles and topology — Integrators
• Release compatibility and upgrade notes — Integrators