SIP 181 Call Is Being Forwarded vs 470 Consent Needed
SIP 181 (Call Is Being Forwarded) is a 1xx Provisional response, while 470 (Consent Needed) 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, 470 means that the request cannot be fulfilled because the source has not been granted consent by the recipient. Used in consent-based communications (RFC 5360).
Описание
A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
Когда вы это видите
When the callee has call forwarding enabled and the request is being redirected to another number or device.
Как исправить
No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings.
Описание
The request cannot be fulfilled because the source has not been granted consent by the recipient. Used in consent-based communications (RFC 5360).
Когда вы это видите
When attempting to communicate with a user who has not granted permission for the calling party to reach them.
Как исправить
Request consent through a separate mechanism. The recipient must explicitly grant permission for future communications.
Ключевые различия
181 is a 1xx Provisional response, while 470 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 470: The request cannot be fulfilled because the source has not been granted consent by the recipient. Used in consent-based communications (RFC 5360).
You encounter 181 when when the callee has call forwarding enabled and the request is being redirected to another number or device.
You encounter 470 when when attempting to communicate with a user who has not granted permission for the calling party to reach them.
Когда что использовать
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 470 (Consent Needed): Request consent through a separate mechanism. The recipient must explicitly grant permission for future communications.