Yealink SIP-T2 SERIES Administrator's Manual page 697

Configuring Advanced Features
Parameters Permitted Values Default
Configures the domain name to which NAPTR record X refers.
Example:
dns_cache_naptr.1.name = yealink.pbx.com
Web User Interface:
None
Phone User Interface:
None
dns_cache_naptr.X.flags
S, A, U or P Blank
(X ranges from 1 to 12)
Description:
Configures the flag of NAPTR record X. (Always ―S‖ for SIP, which means to do an
SRV lookup on whatever is in the replacement field).
S-Do an SRV lookup next
A-Do an A lookup next
U-No need to do a DNS query next
P-Service custom by the user
Example:
dns_cache_naptr.1.flags = S
Web User Interface:
None
Phone User Interface:
None
dns_cache_naptr.X.order
Integer from 0 to 65535 0
(X ranges from 1 to 12)
Description:
Configures the order of NAPTR record X.
NAPTR record with lower order is more preferred.
Example:
dns_cache_naptr.1.order = 90
Web User Interface:
None
Phone User Interface:
None
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