SIP 181 Call Is Being Forwarded vs 600 Busy Everywhere
SIP 181 (Call Is Being Forwarded) is a 1xx Provisional response, while 600 (Busy Everywhere) is a 6xx Global Failure response. 181 indicates that a proxy server may send this to indicate that the call is being forwarded to a different set of destinations. In contrast, 600 means that the callee's end system was contacted successfully but the callee is busy and does not wish to take the call at this time. Unlike 486 (Busy Here), this is a definitive response.
설명
A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
이 코드를 보게 되는 경우
When the callee has call forwarding enabled and the request is being redirected to another number or device.
해결 방법
No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings.
설명
The callee's end system was contacted successfully but the callee is busy and does not wish to take the call at this time. Unlike 486 (Busy Here), this is a definitive response.
이 코드를 보게 되는 경우
When the callee has rejected the call on all devices. No other endpoints should be tried. The user is universally busy.
해결 방법
Wait and try again later. No alternative contact points exist. The callee must become available on their own.
주요 차이점
181 is a 1xx Provisional response, while 600 is a 6xx Global Failure response.
SIP 181: A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
SIP 600: The callee's end system was contacted successfully but the callee is busy and does not wish to take the call at this time. Unlike 486 (Busy Here), this is a definitive response.
You encounter 181 when when the callee has call forwarding enabled and the request is being redirected to another number or device.
You encounter 600 when when the callee has rejected the call on all devices. No other endpoints should be tried. The user is universally busy.
언제 어떤 것을 사용할지
For 181 (Call Is Being Forwarded): No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings. For 600 (Busy Everywhere): Wait and try again later. No alternative contact points exist. The callee must become available on their own.