Yealink SIP-T4X Administrator's Manual page 364

Administrator's Guide for SIP-T4X IP Phones
Format
Default Value
Range
Example
Parameter-
account.X.sip_server.Y.register_on_
enable
Description
Format
Default Value
Range
Example
348
When the value is configured between 1 and
59, the phone automatically sets the time
interval to be 60.
Note: This parameter is only valid when the
parameter
―account.x.sip_server.y.failback_mode‖ is
configured to 3.
X ranges from 1 to 6.
Y ranges from 1 to 2.
Integer
3600
0, 60 to 65535
account.1.sip_server.1.failback_timeout =
3600
Configuration File
<MAC>.cfg
Enables or disables the IP phone to register
to the secondary server before sending
requests to the secondary server in the
failover mode.
X ranges from 1 to 6.
Y ranges from 1 to 2.
Boolean
0
Valid values are:
0-Disabled
1-Enabled
account.1.sip_server.1.register_on_enable =
0