Polycom SOUNDPOINT SIP 3.1 - Manual (Page 255)

Configuration Files
A - 101
NAPTR <NAPTR/>
This configuration attribute is defined as follows:
Attribute Permitted Values Default Interpretation
dns.cache.NAPTR.x.
name
domain name string Null The domain name to which this resource record
refers.
dns.cache.NAPTR.x.ttl 300 to 65535 300 Specifies the time interval (in seconds) that the
resource record may be cached before the
source of the information should again be
consulted.
dns.cache.NAPTR.x.
order
0 to 65535 0 A 16-bit unsigned integer specifying the order in
which the NAPTR records must be processed to
ensure the correct ordering of rules.
dns.cache.NAPTR.x.
preference
0 to 65535 0 A 16-bit unsigned integer that specifies the order
in which NAPTR records with equal "order"
values should be processed, low numbers being
processed before high numbers.
dns.cache.NAPTR.x.
flags
string Flags to control aspects of the rewriting and
interpretation of the fields in the record. Flags
are single characters from the set [A-Z, 0-9].
The alphabetic characters are case insensitive.
At this time only four flag, "S", “A”, “U”, and “P”
are defined. For more information, go to
http://tools.ietf.org/html/rfc2915 .
dns.cache.NAPTR.x.
service
string Specifies the service(s) available down this
rewrite path. For more information, go to
http://tools.ietf.org/html/rfc2915 .
dns.cache.NAPTR.x.
regexp
string Null A string containing a substitution expression that
is applied to the original string held by the client
in order to construct the next domain name to
lookup. The grammar of the substitution
expression is given in RFC 2915.
Note: This attribute is currently not used.
dns.cache.NAPTR.x.
replacement
domain name string
with SRV prefix Null The next name to query for NAPTR, SRV, or
address records depending on the value of the
flags field. It must be a fully qualified
domain-name.