SIP 182 Queued vs 430 Flow Failed
SIP 182 (Queued) is a 1xx Provisional response, while 430 (Flow Failed) is a 4xx Client 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, 430 means that the specific flow to a user agent has failed but other flows may succeed. Used with SIP outbound (RFC 5626).
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 specific flow to a user agent has failed but other flows may succeed. Used with SIP outbound (RFC 5626).
Quando você o vê
When using SIP outbound connections and the specific TCP/TLS connection (flow) to the UA has been lost.
Como corrigir
The proxy should attempt delivery via other registered flows. The UA should re-register to establish a new flow.
Diferenças principais
182 is a 1xx Provisional response, while 430 is a 4xx Client 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 430: The specific flow to a user agent has failed but other flows may succeed. Used with SIP outbound (RFC 5626).
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 430 when when using SIP outbound connections and the specific TCP/TLS connection (flow) to the UA has been lost.
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 430 (Flow Failed): The proxy should attempt delivery via other registered flows. The UA should re-register to establish a new flow.