Yealink SIP-T21 E2 Administrator's Guide

Configuring Advanced Features
769
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
(X ranges from 1 to 12)
S, A, U or P
Blank
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
Note: For more details of the permitted flags, refer to RFC 2915.
Web User Interface:
None
Phone User Interface:
None
dns_cache_naptr.X.order
(X ranges from 1 to 12)
Integer from 0 to 65535
0
Description:
Configures the order of NAPTR record X.
NAPTR record with lower order is more preferred. For example, NAPTR record with the
order 90 has the higher priority than that with the order 100 because 90 is lower than 100.
Example:
dns_cache_naptr.1.order = 90
Web User Interface:
None

Yealink SIP-T21 E2 Specifications

General

Brand	Yealink
Model	SIP-T21 E2
Category	IP Phone
Language	English