SIP 182 Queued vs 501 Not Implemented
SIP 182 (Queued) is a 1xx Provisional response, while 501 (Not Implemented) 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, 501 means that the server does not support the functionality required to fulfill the request. The method is recognized but not implemented.
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 does not support the functionality required to fulfill the request. The method is recognized but not implemented.
Wann Sie es sehen
When the SIP method is valid but the server has not implemented it (e.g., INFO, UPDATE, PRACK on a basic server).
Wie man es behebt
Use a different method that the server supports. Check the Allow header in responses to see supported methods.
Wesentliche Unterschiede
182 is a 1xx Provisional response, while 501 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 501: The server does not support the functionality required to fulfill the request. The method is recognized but not implemented.
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 501 when when the SIP method is valid but the server has not implemented it (e.g., INFO, UPDATE, PRACK on a basic server).
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 501 (Not Implemented): Use a different method that the server supports. Check the Allow header in responses to see supported methods.