SIP 300 Multiple Choices vs 437 Unsupported Certificate
SIP 300 (Multiple Choices) is a 3xx Redirection response, while 437 (Unsupported Certificate) 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, 437 means that the server was unable to validate the certificate referenced by the Identity-Info header. The certificate may be self-signed or from an untrusted CA.
Описание
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
Когда вы это видите
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
Как исправить
Select one of the provided Contact addresses and resend the request to that specific URI.
Описание
The server was unable to validate the certificate referenced by the Identity-Info header. The certificate may be self-signed or from an untrusted CA.
Когда вы это видите
When the signing certificate for SIP Identity validation is not trusted by the verifying server.
Как исправить
Use a certificate from a trusted Certificate Authority. Ensure the certificate chain is complete and not expired.
Ключевые различия
300 is a 3xx Redirection response, while 437 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 437: The server was unable to validate the certificate referenced by the Identity-Info header. The certificate may be self-signed or from an untrusted CA.
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 437 when when the signing certificate for SIP Identity validation is not trusted by the verifying server.
Когда что использовать
For 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI. For 437 (Unsupported Certificate): Use a certificate from a trusted Certificate Authority. Ensure the certificate chain is complete and not expired.