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.
Descrição
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
Quando você o vê
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
Como corrigir
Select one of the provided Contact addresses and resend the request to that specific URI.
Descrição
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.
Quando você o vê
When the signing certificate for SIP Identity validation is not trusted by the verifying server.
Como corrigir
Use a certificate from a trusted Certificate Authority. Ensure the certificate chain is complete and not expired.
Diferenças principais
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.
Quando usar qual
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.