SIP 181 Call Is Being Forwarded vs 300 Multiple Choices
SIP 181 (Call Is Being Forwarded) is a 1xx Provisional response, while 300 (Multiple Choices) is a 3xx Redirection 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, 300 means that the address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
คำอธิบาย
A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
เมื่อคุณพบเห็น
When the callee has call forwarding enabled and the request is being redirected to another number or device.
วิธีแก้ไข
No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings.
คำอธิบาย
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
เมื่อคุณพบเห็น
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
วิธีแก้ไข
Select one of the provided Contact addresses and resend the request to that specific URI.
ความแตกต่างหลัก
181 is a 1xx Provisional response, while 300 is a 3xx Redirection response.
SIP 181: A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
SIP 300: The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
You encounter 181 when when the callee has call forwarding enabled and the request is being redirected to another number or device.
You encounter 300 when when a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
ควรใช้อันไหนเมื่อไร
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 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI.