SIP 199 Early Dialog Terminated vs 484 Address Incomplete
SIP 199 (Early Dialog Terminated) is a 1xx Provisional response, while 484 (Address Incomplete) is a 4xx Client Failure response. 199 indicates that a UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs. In contrast, 484 means that the Request-URI was incomplete. The server needs additional digits or information to route the call.
描述
A UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs.
何时出现
In forked call scenarios when one of the forked branches is cancelled because another branch was answered.
如何修复
No action needed. This is normal behavior in forked call setups. Ensure your UA handles early dialog termination gracefully.
描述
The Request-URI was incomplete. The server needs additional digits or information to route the call.
何时出现
When dialing a partial phone number that the server cannot resolve. Common in PSTN gateway scenarios with overlap dialing.
如何修复
Provide the complete destination address. Add missing digits or domain information to the Request-URI.
主要区别
199 is a 1xx Provisional response, while 484 is a 4xx Client Failure response.
SIP 199: A UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs.
SIP 484: The Request-URI was incomplete. The server needs additional digits or information to route the call.
You encounter 199 when in forked call scenarios when one of the forked branches is cancelled because another branch was answered.
You encounter 484 when when dialing a partial phone number that the server cannot resolve. Common in PSTN gateway scenarios with overlap dialing.
何时使用哪个
For 199 (Early Dialog Terminated): No action needed. This is normal behavior in forked call setups. Ensure your UA handles early dialog termination gracefully. For 484 (Address Incomplete): Provide the complete destination address. Add missing digits or domain information to the Request-URI.