SIP 200 OK vs 436 Bad Identity-Info
SIP 200 (OK) is a 2xx Success response, while 436 (Bad Identity-Info) is a 4xx Client Failure response. 200 indicates that the request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully. In contrast, 436 means that the Identity-Info header contains a URI that the server cannot dereference to obtain the signing certificate.
الوصف
The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
متى تراه
When a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
كيفية الإصلاح
No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions.
الوصف
The Identity-Info header contains a URI that the server cannot dereference to obtain the signing certificate.
متى تراه
When the Identity-Info URI in the request points to an unreachable or invalid certificate location.
كيفية الإصلاح
Ensure the Identity-Info URI is reachable and points to a valid certificate. Check DNS resolution and TLS configuration.
الفروق الرئيسية
200 is a 2xx Success response, while 436 is a 4xx Client Failure response.
SIP 200: The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
SIP 436: The Identity-Info header contains a URI that the server cannot dereference to obtain the signing certificate.
You encounter 200 when when a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
You encounter 436 when when the Identity-Info URI in the request points to an unreachable or invalid certificate location.
متى تستخدم أيًا منهما
For 200 (OK): No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions. For 436 (Bad Identity-Info): Ensure the Identity-Info URI is reachable and points to a valid certificate. Check DNS resolution and TLS configuration.