Two new header fields (Session-Expires and Min-SE) and a new response code (422) are defined. Session-Expires conveys the duration of the session, and Min-SE conveys the minimum allowed value for the session expiration. The 422 response code indicates that the session timer duration was too small. 2.
Session-Expires (SE) – Specifies the maximum amount of time, in seconds, that can occur between session refresh requests in a dialog before the session is considered timed out. Minimum-SE (Min-SE) – Specifies the minimum allowed value, in seconds, for the session expiration.
Two new header fields (Session- Expires and Min-SE) and a new response code (422) are defined. Session- Expires conveys the duration of the session, and Min-SE conveys the minimum allowed value for the session expiration. The 422 response code indicates.
3/28/2004 · The UAS would never be able to reduce the Session- Expires value. (3) Down below section 9 says: The UAS MUST NOT increase the value of the Session- Expires header field. Regarding the top most quotation we can assume that the UAS will always respond with the same value in Session- Expires and Min-SE headers.
12/2/2019 · mjerris changed the title FreeSWITCH Version 1.6.20 ignores minimum-session- expires option minimum-session- expires option ignored Sep 10, 2020 mjerris closed this Sep 10, 2020 Copy link, 11/25/2015 · When we make test calls traces show session-expires is accepted at 90s. No, session-expire is negotiated to 180 seconds. Only min-se is 90 sec which indicates that session-expires can not be lower than 90 seconds. Further session should be refreshed at the rate of half of session expriy timer which will becomse 90 sec (half of 180 sec).
If the Min-SE header is not present, the UA accepts any value. The syntax of the Min-SE header is: Min-SE = Min-SE : delta-seconds 422 Response Message If the value of the Session-Expires header is too small, the UAS or proxy rejects the call with a 422 Session Timer Too Small response message.
The extension defines two new header fields: Session- Expires , which conveys the lifetime of the session, and Min-SE, which conveys the minimum allowed value for the session timer. Donovan & Rosenberg Standards Track [Page 1] RFC 4028 Session Timer April 2005 Table of Contents 1.
MIN-SE is just the lowest threshold acceptable for the call. Your session expire timer is actually what determines at what point the session will be refreshed by whoever the session refresher is. You should see a line like this in the 200 OK to the SIP INVITE request Session-Expires: 1800;refresher=uac or. Session-Expires: 1800;refresher=uas, After viewing CUCM traces we see the incoming invite from Expressway-C has min-se 500. CUCM replies 422 Min-Se too short and has a global min-se of 3600 . There is a min-se of 500 in Expressway-C configuration->protocol->SIP . Phone firmware shows TFTP Failed trying to upgrade from 10-3-1 to 11-0-1 . Do you think firmware upgrade would fix?
