SIP 199 Early Dialog Terminated vs 301 Moved Permanently
SIP 199 (Early Dialog Terminated) is a 1xx Provisional response, while 301 (Moved Permanently) is a 3xx Redirection 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, 301 means that the user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header.
Beschreibung
A UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs.
Wann Sie es sehen
In forked call scenarios when one of the forked branches is cancelled because another branch was answered.
Wie man es behebt
No action needed. This is normal behavior in forked call setups. Ensure your UA handles early dialog termination gracefully.
Beschreibung
The user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header.
Wann Sie es sehen
When a user has permanently changed their SIP address. All future calls should be directed to the new URI.
Wie man es behebt
Update your address book or routing tables to use the new Contact URI provided in the response.
Wesentliche Unterschiede
199 is a 1xx Provisional response, while 301 is a 3xx Redirection 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 301: The user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header.
You encounter 199 when in forked call scenarios when one of the forked branches is cancelled because another branch was answered.
You encounter 301 when when a user has permanently changed their SIP address. All future calls should be directed to the new URI.
Wann welchen verwenden
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 301 (Moved Permanently): Update your address book or routing tables to use the new Contact URI provided in the response.