SIP 182 Queued vs 301 Moved Permanently
SIP 182 (Queued) is a 1xx Provisional response, while 301 (Moved Permanently) is a 3xx Redirection 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, 301 means that the user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header.
説明
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.
このコードが表示される場合
In call center or queuing scenarios where the callee is busy but the system holds the call in a queue.
解決方法
Wait for the call to be dequeued. If queuing is not desired, configure the server to reject calls instead of queuing them.
説明
The user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header.
このコードが表示される場合
When a user has permanently changed their SIP address. All future calls should be directed to the new URI.
解決方法
Update your address book or routing tables to use the new Contact URI provided in the response.
主な違い
182 is a 1xx Provisional response, while 301 is a 3xx Redirection 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 301: The user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header.
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 301 when when a user has permanently changed their SIP address. All future calls should be directed to the new URI.
どちらをいつ使うか
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 301 (Moved Permanently): Update your address book or routing tables to use the new Contact URI provided in the response.