Yealink SIP-T48G Administrator's Manual page 216

Administrator's Guide for SIP-T2_Series_T4_Series IP Phones
Phone User Interface:
None
account.X.session_timer.refresher
Description:
Configures the session timer refresher for account X.
0-UAC
1-UAS
If it is set to 0 (UAC), refreshing the session is performed by the IP phone.
If it is set to 1 (UAS), refreshing the session is performed by a SIP server.
X ranges from 1 to 16 (for SIP-T48G/T46G/T29G).
X ranges from 1 to 12 (for SIP-T42G).
X ranges from 1 to 6 (for SIP-T41P/T27P).
X ranges from 1 to 3 (for SIP-T23P/G).
X ranges from 1 to 2 (for SIP-T21(P) E2).
Web User Interface:
Account->Advanced->Session Refresher
Phone User Interface:
None
To configure session timer via web user interface:
1. Click on Account.
2. Select the desired account from the pull-down list of Account.
3. Click on Advanced.
4. Select the desired value from the pull-down list of Session Timer.
5. Enter the desired time interval in the Session Expires (30~7200s) field.
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Parameters Permitted Values Default
0 or 1 0