SIP 182 Queued vs 580 Precondition Failure
SIP 182 (Queued) is a 1xx Provisional response, while 580 (Precondition Failure) 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, 580 means that the server is unable or unwilling to meet some of the preconditions specified in the request for resource reservation.
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.
Описание
The server is unable or unwilling to meet some of the preconditions specified in the request for resource reservation.
Когда вы это видите
When using QoS preconditions (RFC 3312) and the network cannot guarantee the required quality of service for the media session.
Как исправить
Relax the precondition requirements or ensure the network path supports the required QoS. Consider removing precondition requirements for best-effort calls.
Ключевые различия
182 is a 1xx Provisional response, while 580 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 580: The server is unable or unwilling to meet some of the preconditions specified in the request for resource reservation.
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 580 when when using QoS preconditions (RFC 3312) and the network cannot guarantee the required quality of service for the media session.
Когда что использовать
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 580 (Precondition Failure): Relax the precondition requirements or ensure the network path supports the required QoS. Consider removing precondition requirements for best-effort calls.