SIP 300 Multiple Choices vs 487 Request Terminated
SIP 300 (Multiple Choices) is a 3xx Redirection response, while 487 (Request Terminated) is a 4xx Client Failure response. 300 indicates 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. In contrast, 487 means that the request was terminated by a BYE or CANCEL. The original request was cancelled before it could be completed.
Deskripsi
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
Ketika Anda Melihatnya
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
Cara Memperbaiki
Select one of the provided Contact addresses and resend the request to that specific URI.
Deskripsi
The request was terminated by a BYE or CANCEL. The original request was cancelled before it could be completed.
Ketika Anda Melihatnya
When the caller hangs up before the callee answers (CANCEL sent for pending INVITE). This is normal call abandonment.
Cara Memperbaiki
No fix needed — the caller intentionally terminated the request. This is normal behavior.
Perbedaan Utama
300 is a 3xx Redirection response, while 487 is a 4xx Client Failure response.
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.
SIP 487: The request was terminated by a BYE or CANCEL. The original request was cancelled before it could be completed.
You encounter 300 when when a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
You encounter 487 when when the caller hangs up before the callee answers (CANCEL sent for pending INVITE). This is normal call abandonment.
Kapan Menggunakan Yang Mana
For 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI. For 487 (Request Terminated): No fix needed — the caller intentionally terminated the request. This is normal behavior.