SIP 182 Queued vs 503 Service Unavailable
SIP 182 (Queued) is a 1xx Provisional response, while 503 (Service Unavailable) 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, 503 means that the server is temporarily unable to process the request due to overloading or maintenance. The client should retry after the time indicated in the Retry-After header.
विवरण
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.
जब आप इसे देखें
In call center or queuing scenarios where the callee is busy but the system holds the call in a queue.
कैसे ठीक करें
Wait for the call to be dequeued. If queuing is not desired, configure the server to reject calls instead of queuing them.
विवरण
The server is temporarily unable to process the request due to overloading or maintenance. The client should retry after the time indicated in the Retry-After header.
जब आप इसे देखें
During server overload, maintenance windows, or when the server is rate-limiting requests. Common during traffic spikes.
कैसे ठीक करें
Wait for the time specified in the Retry-After header. If persistent, check server capacity and consider load balancing across multiple SIP proxies.
मुख्य अंतर
182 is a 1xx Provisional response, while 503 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 503: The server is temporarily unable to process the request due to overloading or maintenance. The client should retry after the time indicated in the Retry-After 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 503 when during server overload, maintenance windows, or when the server is rate-limiting requests. Common during traffic spikes.
कब किसका उपयोग करें
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 503 (Service Unavailable): Wait for the time specified in the Retry-After header. If persistent, check server capacity and consider load balancing across multiple SIP proxies.