SIP 182 Queued vs 423 Interval Too Brief
SIP 182 (Queued) is a 1xx Provisional response, while 423 (Interval Too Brief) is a 4xx Client Failure response. 182 indicates 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. In contrast, 423 means that the expiration time in the request is too short. The response contains a Min-Expires header indicating the minimum allowed value.
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.
Beschreibung
The expiration time in the request is too short. The response contains a Min-Expires header indicating the minimum allowed value.
Wann Sie es sehen
When a REGISTER or SUBSCRIBE request has an Expires value that is below the server's minimum. Common with aggressive keep-alive timers.
Wie man es behebt
Increase the Expires header value to at least the Min-Expires value from the response.
Wesentliche Unterschiede
182 is a 1xx Provisional response, while 423 is a 4xx Client Failure response.
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.
SIP 423: The expiration time in the request is too short. The response contains a Min-Expires header indicating the minimum allowed value.
You encounter 182 when in call center or queuing scenarios where the callee is busy but the system holds the call in a queue.
You encounter 423 when when a REGISTER or SUBSCRIBE request has an Expires value that is below the server's minimum. Common with aggressive keep-alive timers.
Wann welchen verwenden
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. For 423 (Interval Too Brief): Increase the Expires header value to at least the Min-Expires value from the response.