Polycom CX5500 Unified Conference Station Administrator’s Guide 1.1.0
Polycom, Inc. 261
300 to 536870912 (2^29), seconds
The TTL describes the time period the phone will use the configured static cache record. If a dynamic network
request receives no response, this timer begins on first access of the static record and once the timer expires,
the next lookup for that record will retry a dynamic network request before falling back on the static entry and its
reset TTL timer again.
DNS-NAPTR
Add up to 12 DNS-NAPTR record entries using parameters in the table DNS-NAPTR Parameters. Specify
each parameter for DNS-NAPTR record x, where x is from 1 to 12.
DNS-NAPTR Parameters
A single character from [A-Z, 0-9]
The flags to control aspects of the rewriting and interpretation of the fields in the record. Characters are case-
sensitive. At this time, only ‘S’, ‘A’, ‘U’, and ‘P’ are defined as flags. See RFC 2915 for details of the permitted
flags.
The domain name to which this resource record refers.
An integer specifying the order in which the NAPTR records must be processed to ensure the correct ordering of
rules.
dns.cache.NAPTR.x.preference
A 16-bit unsigned integer that specifies the order in which NAPTR records with equal "order" values should be
processed. Low numbers are processed before high numbers.
string containing a substitution
expression
This parameter is currently unused.
Applied to the original string held by the client. The substitution expression is applied in order to construct the
next domain name that will be looked up. The grammar of the substitution expression is given in RFC 2915.
dns.cache.NAPTR.x.replacement
domain name string with SRV prefix
The next name to query for NAPTR records depending on the value of the flags field. It must be a fully qualified
domain-name.
dns.cache.NAPTR.x.service
Specifies the service(s) available down this rewrite path. For more information, see RFC 2915.
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