SIP 180 Ringing vs 407 Proxy Authentication Required
SIP 180 (Ringing) is a 1xx Provisional response, while 407 (Proxy Authentication Required) 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, 407 means that the client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
설명
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.
이 코드를 보게 되는 경우
During call setup when the callee's phone is ringing. You should hear a ringback tone after receiving this response.
해결 방법
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.
설명
The client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
이 코드를 보게 되는 경우
When a SIP proxy requires authentication before forwarding the request. Similar to 401 but for proxy servers.
해결 방법
Resend the request with a Proxy-Authorization header containing valid credentials for the proxy.
주요 차이점
180 is a 1xx Provisional response, while 407 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 407: The client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
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 407 when when a SIP proxy requires authentication before forwarding the request. Similar to 401 but for proxy servers.
언제 어떤 것을 사용할지
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 407 (Proxy Authentication Required): Resend the request with a Proxy-Authorization header containing valid credentials for the proxy.