SIP 302 Moved Temporarily vs 489 Bad Event
SIP 302 (Moved Temporarily) is a 3xx Redirection response, while 489 (Bad Event) is a 4xx Client Failure response. 302 indicates that the callee has temporarily moved to a different address. The client should retry the request at the Contact address but continue using the original URI for future requests. In contrast, 489 means that the server did not understand the event package specified in the Event header of a SUBSCRIBE request.
Description
The callee has temporarily moved to a different address. The client should retry the request at the Contact address but continue using the original URI for future requests.
Quand vous le voyez
When a user is temporarily reachable at a different location, such as when traveling or using a different device.
Comment résoudre
Redirect the current call to the Contact URI provided, but keep the original URI for future requests.
Description
The server did not understand the event package specified in the Event header of a SUBSCRIBE request.
Quand vous le voyez
When subscribing to an event package that the server does not support (e.g., dialog, presence, message-summary).
Comment résoudre
Check which event packages the server supports (OPTIONS request) and use a supported event package name.
Différences clés
302 is a 3xx Redirection response, while 489 is a 4xx Client Failure response.
SIP 302: The callee has temporarily moved to a different address. The client should retry the request at the Contact address but continue using the original URI for future requests.
SIP 489: The server did not understand the event package specified in the Event header of a SUBSCRIBE request.
You encounter 302 when when a user is temporarily reachable at a different location, such as when traveling or using a different device.
You encounter 489 when when subscribing to an event package that the server does not support (e.g., dialog, presence, message-summary).
Quand utiliser lequel
For 302 (Moved Temporarily): Redirect the current call to the Contact URI provided, but keep the original URI for future requests. For 489 (Bad Event): Check which event packages the server supports (OPTIONS request) and use a supported event package name.