SIP 181 Call Is Being Forwarded vs 182 Queued
Both SIP 181 (Call Is Being Forwarded) and 182 (Queued) belong to the 1xx Provisional category. 181 indicates that a proxy server may send this to indicate that the call is being forwarded to a different set of destinations. Meanwhile, 182 means that the called party is temporarily unavailable but the server has decided to queue the call rather than reject it. The call will be attempted when the callee becomes available.
Описание
A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
Когда вы это видите
When the callee has call forwarding enabled and the request is being redirected to another number or device.
Как исправить
No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings.
Описание
The called party is temporarily unavailable but the server has decided to queue the call rather than reject it. The call will be attempted when the callee becomes available.
Когда вы это видите
In call center or queuing scenarios where the callee is busy but the system holds the call in a queue.
Как исправить
Wait for the call to be dequeued. If queuing is not desired, configure the server to reject calls instead of queuing them.
Ключевые различия
SIP 181: A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
SIP 182: The called party is temporarily unavailable but the server has decided to queue the call rather than reject it. The call will be attempted when the callee becomes available.
You encounter 181 when when the callee has call forwarding enabled and the request is being redirected to another number or device.
You encounter 182 when in call center or queuing scenarios where the callee is busy but the system holds the call in a queue.
Когда что использовать
For 181 (Call Is Being Forwarded): No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings. For 182 (Queued): Wait for the call to be dequeued. If queuing is not desired, configure the server to reject calls instead of queuing them.