User guide

Yealink IP Phones Auto Provisioning Guide
312
Parameter
Permitted
Values
Descriptions
Web Setting Path
requests to the primary server after the
timeout defined by the parameter
―account.X.sip_server.Y.failback_timeout‖.
The default value is 0.
For more information, refer to Server
Redundancy on Yealink IP Phones .
account.X.sip_server.Y.failback_timeout
(SIP-T48G/T46G/T29G: X ranges from 1 to 16.
SIP-T42G: X ranges from 1 to 12.
SIP-T41P/T27P: X ranges from 1 to 6.
SIP-T23P/G: X ranges from 1 to 3.
SIP-T21(P) E2: X ranges from 1 to 2.
Y ranges from 1 to 2.)
Integer 0, from
60 to 65535
It configures the timeout (in seconds) for the IP
phone to retry to send requests to the primary
server after failing over to the current working
server for account X when the parameter
―account.X.sip_server.Y.failback_mode‖ is set
to 3 (duration).
If you set the parameter to 0, the IP phone will
not send requests to the primary server until a
failover event occurs with the current working
server.
If you set the parameter between 1 and 59,
the timeout will be 60 seconds.
The default value is 3600.
For more information, refer to Server
Redundancy on Yealink IP Phones .