SIP 181 Call Is Being Forwarded vs 414 Request-URI Too Long
SIP 181 (Call Is Being Forwarded) is a 1xx Provisional response, while 414 (Request-URI Too Long) is a 4xx Client Failure response. 181 indicates that a proxy server may send this to indicate that the call is being forwarded to a different set of destinations. In contrast, 414 means that the server is refusing to service the request because the Request-URI is longer than the server is willing to interpret.
Descrição
A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
Quando você o vê
When the callee has call forwarding enabled and the request is being redirected to another number or device.
Como corrigir
No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings.
Descrição
The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret.
Quando você o vê
When the SIP URI in the request line is excessively long, which may happen with URI parameters or long phone numbers.
Como corrigir
Shorten the Request-URI. Remove unnecessary parameters or use a shorter alias for the destination.
Diferenças principais
181 is a 1xx Provisional response, while 414 is a 4xx Client Failure response.
SIP 181: A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
SIP 414: The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret.
You encounter 181 when when the callee has call forwarding enabled and the request is being redirected to another number or device.
You encounter 414 when when the SIP URI in the request line is excessively long, which may happen with URI parameters or long phone numbers.
Quando usar qual
For 181 (Call Is Being Forwarded): No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings. For 414 (Request-URI Too Long): Shorten the Request-URI. Remove unnecessary parameters or use a shorter alias for the destination.