User guide

Appendix
311
Parameter
Permitted
Values
Descriptions
Web Setting Path
account.X.sip_server.Y.retry_counts
(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 from 0
to 20
It configures the retry times for the IP phone to
resend requests when the SIP server Y is
unavailable or there is no response from the
SIP server Y for account X.
The default value is 3.
For more information, refer to Server
Redundancy on Yealink IP Phones .
Account->Register->SIP Server Y
->Server Retry Counts
account.X.sip_server.Y.failback_mode
(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.)
0, 1, 2 or 3
It configures the mode for the IP 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 IP phone retries to send
requests to the primary server after the
timeout of the DNSTTL configured for the
server that the IP phone is registered to.
2-Registration: the IP phone retries to send
REGISTER requests to the primary server
when registration renewal.
3-duration: the IP phone retries to send