SIP 204 No Notification vs 484 Address Incomplete
SIP 204 (No Notification) is a 2xx Success response, while 484 (Address Incomplete) is a 4xx Client Failure response. 204 indicates that the request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request. In contrast, 484 means that the Request-URI was incomplete. The server needs additional digits or information to route the call.
Descripción
The request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request.
Cuándo lo verás
When subscribing to event packages that may not generate immediate notifications, such as dialog or presence packages.
Cómo solucionarlo
No fix needed. The subscription was accepted but there is no state change to notify about yet.
Descripción
The Request-URI was incomplete. The server needs additional digits or information to route the call.
Cuándo lo verás
When dialing a partial phone number that the server cannot resolve. Common in PSTN gateway scenarios with overlap dialing.
Cómo solucionarlo
Provide the complete destination address. Add missing digits or domain information to the Request-URI.
Diferencias clave
204 is a 2xx Success response, while 484 is a 4xx Client Failure response.
SIP 204: The request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request.
SIP 484: The Request-URI was incomplete. The server needs additional digits or information to route the call.
You encounter 204 when when subscribing to event packages that may not generate immediate notifications, such as dialog or presence packages.
You encounter 484 when when dialing a partial phone number that the server cannot resolve. Common in PSTN gateway scenarios with overlap dialing.
Cuándo usar cada uno
For 204 (No Notification): No fix needed. The subscription was accepted but there is no state change to notify about yet. For 484 (Address Incomplete): Provide the complete destination address. Add missing digits or domain information to the Request-URI.