SIP 182 Queued vs 202 Accepted
SIP 182 (Queued) is a 1xx Provisional response, while 202 (Accepted) is a 2xx Success 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, 202 means that the request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
Descrição
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.
Quando você o vê
In call center or queuing scenarios where the callee is busy but the system holds the call in a queue.
Como corrigir
Wait for the call to be dequeued. If queuing is not desired, configure the server to reject calls instead of queuing them.
Descrição
The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
Quando você o vê
After sending a REFER request for call transfer. The transfer target acknowledges receipt but hasn't completed the transfer yet.
Como corrigir
Wait for a NOTIFY to learn the outcome of the referred action. If no NOTIFY arrives, check subscription state and network connectivity.
Diferenças principais
182 is a 1xx Provisional response, while 202 is a 2xx Success 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 202: The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
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 202 when after sending a REFER request for call transfer. The transfer target acknowledges receipt but hasn't completed the transfer yet.
Quando usar qual
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 202 (Accepted): Wait for a NOTIFY to learn the outcome of the referred action. If no NOTIFY arrives, check subscription state and network connectivity.