SIP 180 Ringing vs 182 Queued
Both SIP 180 (Ringing) and 182 (Queued) belong to the 1xx Provisional category. 180 indicates that the UA receiving the INVITE is trying to alert the user. This response is used to initiate local ringback tone at the caller's end. 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.
Beschreibung
The UA receiving the INVITE is trying to alert the user. This response is used to initiate local ringback tone at the caller's end.
Wann Sie es sehen
During call setup when the callee's phone is ringing. You should hear a ringback tone after receiving this response.
Wie man es behebt
No fix needed — the callee's device is ringing. If the call never connects after ringing, check the callee's device or call forwarding settings.
Beschreibung
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.
Wann Sie es sehen
In call center or queuing scenarios where the callee is busy but the system holds the call in a queue.
Wie man es behebt
Wait for the call to be dequeued. If queuing is not desired, configure the server to reject calls instead of queuing them.
Wesentliche Unterschiede
SIP 180: The UA receiving the INVITE is trying to alert the user. This response is used to initiate local ringback tone at the caller's end.
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 180 when during call setup when the callee's phone is ringing. You should hear a ringback tone after receiving this response.
You encounter 182 when in call center or queuing scenarios where the callee is busy but the system holds the call in a queue.
Wann welchen verwenden
For 180 (Ringing): No fix needed — the callee's device is ringing. If the call never connects after ringing, check the callee's device or call 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.