Yealink SIP-T2 Series Provisioning Manual page 176

Yealink IP Phones Auto provisioning Guide
Permitted
Parameter
X ranges from
1 to 3.
SIP-T20P: X
ranges from 1
to 2.
Y ranges from
1 to 2)
account.X.sip_
server.Y.failba
ck_mode =
(SIP-T28P: X
ranges from 1
to 6.
SIP-T26P/T22P:
0, 1, 2 or 3
X ranges from
1 to 3.
SIP-T20P: X
ranges from 1
to 2.
Y ranges from
1 to 2)
account.X.sip_
server.Y.failba
ck_timeout =
(SIP-T28P: X
ranges from 1
to 6.
SIP-T26P/T22P:
X ranges from
1 to 3.
SIP-T20P: X
ranges from 1
to 2.
Y ranges from
1 to 2.)
166
Values
It configures the mode for the phone to
retry the primary server in failover
mode for account X.
0-newRequests: all requests are
forwarded to the primary server first,
regardless of the last used server.
1-DNSTTL: the phone retries to use the
primary server after the timeout of the
DNSTTL configured for the SIP server.
2-Registration: the phone retries to use
the primary server when the SIP
server's registration requires renewal.
3-duration: the phone retries to use the
primary server after the timeout
defined by the parameter
"account.X.failback_timeout".
The default value is 0.
It configures the timeout (in seconds)
for the phone to retry to use the
primary server after failing over to the
current working server for account X
Integer 0,
when the parameter
from 60 to
"account.X.sip_server.Y.failback_mode
65535
" is set to 3 (duration).
If you set the parameter between 1
and 59, the timeout will be 60 seconds.
The default value is 3600.
Descriptions Web Setting Path