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Telnyx Voice Channels API

Voice Channels

Telnyx Voice Channels API is one of 168 APIs that Telnyx publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Voice Channels. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 6 operations across 5 paths, and defines 4 schemas. It is described by OpenAPI 3.1.0, at version 2.0.0.

Requests are made against a single base URL, https://api.telnyx.com/v2.

6 operations 5 paths 4 schemas 4 GET1 PATCH1 PUT

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
2.0.0
Base URL
https://api.telnyx.com/v2
Authentication
HTTP Bearer, HTTP Bearer, OAuth 2.0, HTTP Bearer, HTTP Bearer, HTTP Bearer
Resource Areas
1

Authentication & Security 6

Telnyx Voice Channels API declares 6 security schemes for authenticating requests. It accepts HTTP bearer tokens (bearerAuth). It accepts HTTP bearer tokens (branded-calling_bearerAuth). It supports OAuth 2.0 (oauthClientAuth) using the authorizationCode and clientCredentials flows, exposing 1 scope. It accepts HTTP bearer tokens (JWT) (outbound-voice-profiles_bearerAuth). It accepts HTTP bearer tokens (pronunciation-dicts_bearerAuth). It accepts HTTP bearer tokens (JWT) (stored-payment-transactions_bearerAuth). By default, every request must be authenticated.

  • branded-calling_bearerAuth — API key passed as a Bearer token in the Authorization header
  • oauthClientAuth — OAuth 2.0 authentication for Telnyx API and MCP integrations
  • pronunciation-dicts_bearerAuth — Telnyx API v2 key. Obtain from https://portal.telnyx.com

Paths & Operations 6

Across 5 paths, the API surfaces 6 operations — 4 GET, 1 PATCH, 1 PUT. Each is listed below with its method, path, parameters, and response codes.

Voice Channels 6

Voice Channels

GET
/channel_zones
List your voice channels for non-US zones
GetChannelZones 1 param → 200400401404
PUT
/channel_zones/{channel_zone_id}
Update voice channels for non-US Zones
PatchChannelZone 1 param body → 200400401404default
GET
/inbound_channels
List your voice channels for US Zone
ListInboundChannels → 200401404422
PATCH
/inbound_channels
Update voice channels for US Zone
UpdateOutboundChannels body → 200400401404default
GET
/list
List All Numbers using Channel Billing
GetAllNumbersChannelZones → 200400401404
GET
/list/{channel_zone_id}
List Numbers using Channel Billing for a specific Zone
GetNumbersChannelZones 1 param → 200400401404

Schemas 4

The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are GcbChannelZone (7 properties), voice-channels_Error (5 properties), PaginationMeta (4 properties), voice-channels_Errors (1 property). Each schema is shown below with its type and property counts.

PaginationMeta
object
4 properties
voice-channels_Errors
object
1 property
voice-channels_Error
object
5 properties 2 required
GcbChannelZone
object
7 properties 5 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

telnyx-voice-channels-api-openapi.yml Raw ↑

Other APIs Telnyx publishes across the network.

Telnyx Access Tokens API
Telnyx Addresses API
Telnyx Advanced Number Orders API
Telnyx Assistants API
Telnyx Audio API
Telnyx Audit Logs API
Telnyx Authentication Providers API
Telnyx AutoRechargePreferences API
Telnyx Billing API
Telnyx Billing Groups API
Telnyx Brands API
Telnyx Bucket SSL Certificate API