SIP 202 Accepted vs 603 Decline
SIP 202 (Accepted) is a 2xx Success response, while 603 (Decline) is a 6xx Global Failure response. 202 indicates that the request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests. In contrast, 603 means that the callee's machine was contacted successfully but the user explicitly does not wish to or cannot participate. Unlike 600, this may be because the callee doesn't want to communicate, not necessarily
Açıklama
The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
Gördüğünüzde
After sending a REFER request for call transfer. The transfer target acknowledges receipt but hasn't completed the transfer yet.
Nasıl Düzeltilir
Wait for a NOTIFY to learn the outcome of the referred action. If no NOTIFY arrives, check subscription state and network connectivity.
Açıklama
The callee's machine was contacted successfully but the user explicitly does not wish to or cannot participate. Unlike 600, this may be because the callee doesn't want to communicate, not necessarily because they're busy.
Gördüğünüzde
When the callee explicitly declines the call. This is an active rejection, not a busy or unavailable state.
Nasıl Düzeltilir
The callee has declined. Respect their decision. Consider alternative communication methods (email, messaging).
Temel Farklar
202 is a 2xx Success response, while 603 is a 6xx Global Failure response.
SIP 202: The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
SIP 603: The callee's machine was contacted successfully but the user explicitly does not wish to or cannot participate. Unlike 600, this may be because the callee doesn't want to communicate, not necessarily
You encounter 202 when after sending a REFER request for call transfer. The transfer target acknowledges receipt but hasn't completed the transfer yet.
You encounter 603 when when the callee explicitly declines the call. This is an active rejection, not a busy or unavailable state.
Hangisini Ne Zaman Kullanmalı
For 202 (Accepted): Wait for a NOTIFY to learn the outcome of the referred action. If no NOTIFY arrives, check subscription state and network connectivity. For 603 (Decline): The callee has declined. Respect their decision. Consider alternative communication methods (email, messaging).