Yealink SIP-T2 Series Provisioning Manual page 183

Permitted
Parameter
Values
ranges from 1
to 2.
Y ranges from
1 to 12)
account.X.dns
_cache_naptr.
Y.service =
(SIP-T28P: X
ranges from 1
to 6.
String within
SIP-T26P/T22P:
32
X ranges from
characters
1 to 3.
SIP-T20P: X
ranges from 1
to 2.
Y ranges from
1 to 12)
account.X.dns
_cache_naptr.
Y.ttl =
(SIP-T28P: X
ranges from 1
to 6.
Integer from
SIP-T26P/T22P:
30 to
X ranges from
2147483647
1 to 3.
SIP-T20P: X
ranges from 1
to 2.
Y ranges from
1 to 12)
account.X.srv_
ttl_timer_enab
le =
0 or 1
(SIP-T28P: X
ranges from 1
to 6.
Descriptions
It configures the transport protocol
available for SIP server in NAPTR
record Y for account X.
The default value is blank.
It takes effect after a reboot.
It configures the time interval that
NAPTR record Y may be cached before
the record should be consulted again
for account X.
The default value is 300.
It takes effect after a reboot.
It enables or disables the phone to
refresh the DNS-SRV query record at
the regular time for account X.
0-Disabled
1-Enabled
The default value is 0.
Appendix
Web Setting Path
173