Test outbound call (POST)

`POST /telephony/testOutboundCall`

Same as GET /telephony/testOutboundCall, but accepts a JSON body to override the configured target phone number or subchannel.

phoneNumberstringbody

Override the configured target phone number.

subchannelIdintegerbody

Override the configured subchannel.

{
  "phoneNumber": "+491234567890",
  "subchannelId": 1
}

200 — Successful operation

400 — Invalid input or missing settings

401 — Unauthorized

500 — Internal error