Yealink SIP-T4X Administrator's Manual page 314

Administrator's Guide for SIP-T4X IP Phones
Format
Default Value
Range
Example
Parameter-
account.X.session_timer.enable
Description
Format
Default Value
Range
Example
Parameter-
account.X.session_timer.expires
Description
Format
Default Value
Range
Example
298
X ranges from 1 to 6.
Float
5
2.5 to 60
account.1.advanced.timer_t4 = 5
Configuration File
<MAC>.cfg
Enables or disables the session timer for
account X.
If it is set to 1 (Enabled), IP phone will send
periodic re-INVITE requests to refresh the
session during a call.
X ranges from 1 to 6.
Boolean
0
Valid values are:
0-Disabled
1-Enabled
account.1.session_timer.enable = 1
Configuration File
<MAC>.cfg
Configures the IP phone to refresh the session
during a call at regular intervals (in seconds)
for account X.
If it is set to 1800, the IP phone will refresh the
session during a call before 1800 seconds.
X ranges from 1 to 6.
Integer
1800
30 to 7200
account.1.session_timer.expires = 1800