aid: frejun-teler
name: FreJun Teler
description: FreJun Teler is a developer-first programmable voice/telephony API (CPaaS) that handles carriers,
  phone numbers, and real-time audio streaming so developers can connect AI models (STT/LLM/TTS) to live
  phone calls. It offers real-time bidirectional audio over WebSocket (L16/8000 Hz, sub-250ms latency)
  and programmable SIP trunking, with webhook event delivery and official Python (teler) and Node
  (@frejun/teler) SDKs.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/frejun-teler/refs/heads/main/apis.yml
created: '2026-09-15'
modified: '2026-09-15'
tags:
- programmable voice API
- voice AI infrastructure
- CPaaS
- SIP trunking
- telephony API
- real-time media streaming
- WebSocket audio
- call automation
- conversational AI infrastructure
apis:
- name: Teler Voice API
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  description: Programmable voice/telephony API. Places and controls live voice calls (initiate, play
    audio, DTMF, transfer, hangup), streams bidirectional call audio to AI agents over a WebSocket media
    channel, and provisions programmable SIP trunking (trunks, IP ACLs, virtual numbers). REST resources
    for calls, voice apps, virtual numbers, SIP trunks/calls, webhook events, recordings and secrets use
    cursor pagination. Served from https://api.frejun.ai and authenticated with an x-api-key header.
    Backed by official Python (teler) and Node (@frejun/teler) SDKs.
  humanURL: https://frejun.com/docs/teler/
  baseURL: https://api.frejun.ai
  tags:
  - programmable voice API
  - voice AI infrastructure
  - CPaaS
  - SIP trunking
  - telephony API
  - real-time media streaming
  - WebSocket audio
  - call automation
  - conversational AI infrastructure
  properties:
  - type: OpenAPI
    url: openapi/frejun-teler-openapi.json
  - type: Documentation
    url: https://frejun.com/docs/teler/
  - type: APIReference
    url: https://api.frejun.ai/redoc
  - type: Authentication
    url: authentication/frejun-teler-authentication.yml
  - type: Conventions
    url: conventions/frejun-teler-conventions.yml
  - type: ErrorCatalog
    url: errors/frejun-teler-problem-types.yml
  - type: DataModel
    url: data-model/frejun-teler-data-model.yml
  - type: Webhooks
    url: asyncapi/frejun-teler-webhooks.yml
  - type: Overlay
    url: overlays/frejun-teler-openapi-overlay.yaml
common:
- type: Website
  url: https://www.frejun.ai
- type: DeveloperPortal
  url: https://frejun.com/docs/teler/
- type: Documentation
  url: https://frejun.com/docs/teler/
- type: APIReference
  url: https://api.frejun.ai/redoc
- type: Blog
  url: https://frejun.com/teler-blog/
- type: Pricing
  url: https://frejun.com/teler/pricing/
- type: SignUp
  url: https://platform.frejun.ai/signup
- type: Login
  url: https://platform.frejun.ai/login
- type: TermsOfService
  url: https://frejun.com/terms/
- type: PrivacyPolicy
  url: https://frejun.com/privacy-policy/
- type: GitHubOrganization
  url: https://github.com/frejun-tech
- type: StatusPage
  url: https://frejun.statuspage.io
- type: LLMsTxt
  url: https://www.frejun.ai/llms.txt
- type: WellKnown
  url: well-known/frejun-teler-well-known.yml
- type: Authentication
  url: authentication/frejun-teler-authentication.yml
- type: DomainSecurity
  url: security/frejun-teler-domain-security.yml
- type: Conventions
  url: conventions/frejun-teler-conventions.yml
- type: Lifecycle
  url: lifecycle/frejun-teler-lifecycle.yml
- type: Deprecation
  url: lifecycle/frejun-teler-lifecycle.yml
- type: Conformance
  url: conformance/frejun-teler-conformance.yml
- type: MCPServer
  url: mcp/frejun-teler-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Packages
  url: packages/frejun-teler-packages.yml
- type: SDKs
  url: packages/frejun-teler-packages.yml
- type: Components
  url: components/frejun-teler-components.yml
- type: Webhooks
  url: asyncapi/frejun-teler-webhooks.yml
- type: DataModel
  url: data-model/frejun-teler-data-model.yml
- type: ErrorCatalog
  url: errors/frejun-teler-problem-types.yml
- type: Overlay
  url: overlays/frejun-teler-openapi-overlay.yaml
- type: Sandbox
  url: sandbox/frejun-teler-sandbox.yml
- type: RateLimits
  url: rate-limits/frejun-teler-rate-limits.yml
- type: Plans
  url: plans/frejun-teler-plans-pricing.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-09-15'
  status: enriched
  artifacts_added: 24
  pass: local-v3