---
title: "Get a SIP trunk"
method: GET
path: "/v1/phone-numbers/sip-trunks/{id}"
tags: ["Voice"]
---

# Get a SIP trunk

`GET /v1/phone-numbers/sip-trunks/{id}`

## Path parameters

- `id` string, required

## Response `200`

Trunk detail, including the attached numbers.

- object
  - `id` string
  - `label` string
  - `sipHost` string
  - `sipPort` integer
  - `transport` 'tls' | 'tcp' | 'udp'
  - `termination` object
    - `uri` string
    - `username` string
  - `numbersAttached` integer
  - `createdAt` string, date-time, nullable
  - `numbers` object[]
    - `id` string — Phone number record ID.
    - `phoneNumber` string

## Other responses

- `400` — Invalid request
- `401` — Unauthorized
- `404` — SIP trunk not found

## Changes

- **2026-09-16** `3e6ddf2a99ea` — 1 info
  - added the optional property `details/budgetScope` to the response with the `400` status
- **2026-09-15** `0dba7d004d75` — 2 info
  - added the optional property `details/quotaExhausted` to the response with the `400` status
  - added the optional property `details/quotaScope` to the response with the `400` status
- **2026-08-24** `1307bc21beec` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/zernio/apis/zernio-api/changes/v1/phone-numbers/sip-trunks/:id/get.md)

---

[API](https://skmtc.dev/zernio/apis/zernio-api.md) · [All operations](https://skmtc.dev/zernio/apis/zernio-api/llms.txt) · [OpenAPI document](https://skmtc.dev/zernio/apis/zernio-api/revisions/eded32b62823?raw)