SIP 180 Ringing vs 608 Rejected
SIP 180 (Ringing) is a 1xx Provisional response, while 608 (Rejected) is a 6xx Global 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, 608 means that an intermediary machine or process rejected the call attempt. Similar to 607 but the rejection comes from the network rather than the end user.
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
An intermediary machine or process rejected the call attempt. Similar to 607 but the rejection comes from the network rather than the end user.
このコードが表示される場合
When a network element (not the callee) blocks the call. Used by analytics engines and call-blocking services in the network path.
解決方法
This is a network-level block. Contact the network administrator or carrier to understand why the call was blocked.
主な違い
180 is a 1xx Provisional response, while 608 is a 6xx Global 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 608: An intermediary machine or process rejected the call attempt. Similar to 607 but the rejection comes from the network rather than the end user.
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 608 when when a network element (not the callee) blocks the call. Used by analytics engines and call-blocking services in the network path.
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 608 (Rejected): This is a network-level block. Contact the network administrator or carrier to understand why the call was blocked.