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.
Описание
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.
Когда вы это видите
During call setup when the callee's phone is ringing. You should hear a ringback tone after receiving this response.
Как исправить
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.
Описание
An intermediary machine or process rejected the call attempt. Similar to 607 but the rejection comes from the network rather than the end user.
Когда вы это видите
When a network element (not the callee) blocks the call. Used by analytics engines and call-blocking services in the network path.
Как исправить
This is a network-level block. Contact the network administrator or carrier to understand why the call was blocked.
Ключевые различия
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.
Когда что использовать
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.