SIP 180 Ringing vs 470 Consent Needed
SIP 180 (Ringing) is a 1xx Provisional response, while 470 (Consent Needed) is a 4xx Client Failure response. 180 indicates that the UA receiving the INVITE is trying to alert the user. This response is used to initiate local ringback tone at the caller's end. 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).
説明
The UA receiving the INVITE is trying to alert the user. This response is used to initiate local ringback tone at the caller's end.
このコードが表示される場合
During call setup when the callee's phone is ringing. You should hear a ringback tone after receiving this response.
解決方法
No fix needed — the callee's device is ringing. If the call never connects after ringing, check the callee's device or call forwarding settings.
説明
The request cannot be fulfilled because the source has not been granted consent by the recipient. Used in consent-based communications (RFC 5360).
このコードが表示される場合
When attempting to communicate with a user who has not granted permission for the calling party to reach them.
解決方法
Request consent through a separate mechanism. The recipient must explicitly grant permission for future communications.
主な違い
180 is a 1xx Provisional response, while 470 is a 4xx Client Failure response.
SIP 180: The UA receiving the INVITE is trying to alert the user. This response is used to initiate local ringback tone at the caller's end.
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 180 when during call setup when the callee's phone is ringing. You should hear a ringback tone after receiving this response.
You encounter 470 when when attempting to communicate with a user who has not granted permission for the calling party to reach them.
どちらをいつ使うか
For 180 (Ringing): No fix needed — the callee's device is ringing. If the call never connects after ringing, check the callee's device or call forwarding settings. For 470 (Consent Needed): Request consent through a separate mechanism. The recipient must explicitly grant permission for future communications.