SIP 182 Queued vs 504 Server Time-out
SIP 182 (Queued) is a 1xx Provisional response, while 504 (Server Time-out) is a 5xx Server 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, 504 means that the server did not receive a timely response from an external server it accessed while attempting to process the request. Different from 408 (client timeout).
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 server did not receive a timely response from an external server it accessed while attempting to process the request. Different from 408 (client timeout).
Wann Sie es sehen
When a proxy's request to a downstream server times out. The proxy itself is working, but the next hop is unresponsive.
Wie man es behebt
Check the downstream server's availability. Verify DNS resolution for the next-hop domain. Consider adjusting transaction timeout values.
Wesentliche Unterschiede
182 is a 1xx Provisional response, while 504 is a 5xx Server 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 504: The server did not receive a timely response from an external server it accessed while attempting to process the request. Different from 408 (client timeout).
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 504 when when a proxy's request to a downstream server times out. The proxy itself is working, but the next hop is unresponsive.
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 504 (Server Time-out): Check the downstream server's availability. Verify DNS resolution for the next-hop domain. Consider adjusting transaction timeout values.