SIP 202 Accepted vs 484 Address Incomplete
SIP 202 (Accepted) is a 2xx Success response, while 484 (Address Incomplete) is a 4xx Client 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, 484 means that the Request-URI was incomplete. The server needs additional digits or information to route the call.
説明
The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
このコードが表示される場合
After sending a REFER request for call transfer. The transfer target acknowledges receipt but hasn't completed the transfer yet.
解決方法
Wait for a NOTIFY to learn the outcome of the referred action. If no NOTIFY arrives, check subscription state and network connectivity.
説明
The Request-URI was incomplete. The server needs additional digits or information to route the call.
このコードが表示される場合
When dialing a partial phone number that the server cannot resolve. Common in PSTN gateway scenarios with overlap dialing.
解決方法
Provide the complete destination address. Add missing digits or domain information to the Request-URI.
主な違い
202 is a 2xx Success response, while 484 is a 4xx Client Failure response.
SIP 202: The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
SIP 484: The Request-URI was incomplete. The server needs additional digits or information to route the call.
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 484 when when dialing a partial phone number that the server cannot resolve. Common in PSTN gateway scenarios with overlap dialing.
どちらをいつ使うか
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 484 (Address Incomplete): Provide the complete destination address. Add missing digits or domain information to the Request-URI.