SIP 181 Call Is Being Forwarded vs 485 Ambiguous
SIP 181 (Call Is Being Forwarded) is a 1xx Provisional response, while 485 (Ambiguous) 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, 485 means that the Request-URI was ambiguous. The response body may contain a list of possible unambiguous addresses.
Beschreibung
A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
Wann Sie es sehen
When the callee has call forwarding enabled and the request is being redirected to another number or device.
Wie man es behebt
No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings.
Beschreibung
The Request-URI was ambiguous. The response body may contain a list of possible unambiguous addresses.
Wann Sie es sehen
When the destination address matches multiple users and the server cannot determine which one is intended.
Wie man es behebt
Use a more specific SIP URI. Check the response body for a list of possible matches and select the correct one.
Wesentliche Unterschiede
181 is a 1xx Provisional response, while 485 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 485: The Request-URI was ambiguous. The response body may contain a list of possible unambiguous addresses.
You encounter 181 when when the callee has call forwarding enabled and the request is being redirected to another number or device.
You encounter 485 when when the destination address matches multiple users and the server cannot determine which one is intended.
Wann welchen verwenden
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 485 (Ambiguous): Use a more specific SIP URI. Check the response body for a list of possible matches and select the correct one.