Yealink SIP-T2XP Administrator's Manual page 379

Parameters
None
Phone User Interface:
None
account.X.fallback.timeout
Description:
Configures the time interval (in seconds) for the IP phone to detect whether the
working server is available by sending the registration request after the fallback
server takes over call control.
X ranges from 1 to 6 (for SIP-T28P).
X ranges from 1 to 3 (for SIP-T26P/T22P).
X ranges from 1 to 2 (for SIP-T20P).
It is only applicable to the Successive Registration mode.
Web User Interface:
None
Phone User Interface:
None
account.X.sip_server.Y.failback_mode
(Y ranges from 1 to 2)
Description:
Configures the way in which the phone fails back to the primary server for call
control in the failover mode.
0-newRequests: all requests are sent to the primary server first, regardless of the last
server that was used.
1-DNSTTL: the IP phone will send requests to the last registered server first. If the time
defined by DNSTTL on the registered server expires, the phone will retry to send
requests to the primary server.
2-registration: the IP phone will send requests to the last registered server first. If the
registration expires, the phone will retry to send requests to the primary server.
3-duration: the IP phone will send requests to the last registered server first. If the
time defined by the account.X.sip_server.Y.failback_timeout parameter expires, the
phone will retry to send requests to the primary server.
X ranges from 1 to 6 (for SIP-T28P).
X ranges from 1 to 3 (for SIP-
X ranges from 1 to 2 (for SIP-
Integer from 10 to
).
T26P/T22P
).
T20P
Configuring Advanced Features
Permitted Values
2147483647
0, 1, 2 or 3
Default
120
0
361