SIP 180 Ringing vs 305 Use Proxy
SIP 180 (Ringing) is a 1xx Provisional response, while 305 (Use Proxy) is a 3xx Redirection 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, 305 means that the requested resource must be accessed through the proxy given by the Contact header field.
Beschreibung
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.
Wann Sie es sehen
During call setup when the callee's phone is ringing. You should hear a ringback tone after receiving this response.
Wie man es behebt
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.
Beschreibung
The requested resource must be accessed through the proxy given by the Contact header field.
Wann Sie es sehen
When the request must be routed through a specific outbound proxy server.
Wie man es behebt
Resend the request through the proxy specified in the Contact header of this response.
Wesentliche Unterschiede
180 is a 1xx Provisional response, while 305 is a 3xx Redirection 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 305: The requested resource must be accessed through the proxy given by the Contact header field.
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 305 when when the request must be routed through a specific outbound proxy server.
Wann welchen verwenden
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 305 (Use Proxy): Resend the request through the proxy specified in the Contact header of this response.