SIP 182 Queued vs 438 Invalid Identity Header
SIP 182 (Queued) is a 1xx Provisional response, while 438 (Invalid Identity Header) is a 4xx Client Failure response. 182 indicates that the called party is temporarily unavailable but the server has decided to queue the call rather than reject it. The call will be attempted when the callee becomes available. In contrast, 438 means that the server obtained the certificate from the Identity-Info header but the signature in the Identity header is invalid.
الوصف
The called party is temporarily unavailable but the server has decided to queue the call rather than reject it. The call will be attempted when the callee becomes available.
متى تراه
In call center or queuing scenarios where the callee is busy but the system holds the call in a queue.
كيفية الإصلاح
Wait for the call to be dequeued. If queuing is not desired, configure the server to reject calls instead of queuing them.
الوصف
The server obtained the certificate from the Identity-Info header but the signature in the Identity header is invalid.
متى تراه
When the cryptographic signature in the Identity header does not match the message content, indicating possible tampering.
كيفية الإصلاح
Regenerate the Identity header with a correct signature. Ensure no intermediary is modifying signed headers after signing.
الفروق الرئيسية
182 is a 1xx Provisional response, while 438 is a 4xx Client Failure response.
SIP 182: The called party is temporarily unavailable but the server has decided to queue the call rather than reject it. The call will be attempted when the callee becomes available.
SIP 438: The server obtained the certificate from the Identity-Info header but the signature in the Identity header is invalid.
You encounter 182 when in call center or queuing scenarios where the callee is busy but the system holds the call in a queue.
You encounter 438 when when the cryptographic signature in the Identity header does not match the message content, indicating possible tampering.
متى تستخدم أيًا منهما
For 182 (Queued): Wait for the call to be dequeued. If queuing is not desired, configure the server to reject calls instead of queuing them. For 438 (Invalid Identity Header): Regenerate the Identity header with a correct signature. Ensure no intermediary is modifying signed headers after signing.