Cisco Cisco TelePresence Video Communication Server Expressway
Configuring NAPTR on a DNS server
Cisco VCS Deployment Guide: ENUM dialing on Cisco VCS (X7.2)
Page 9 of 12
/var/named/<filename>
Contained in the file
/var/named/enum.enumlookups
are the details of the configuration of the zone;
for an enum zone this contains the Start Of Authority header followed by the NAPTR records
containing the reverse ordered dotted digit lookups, their translations and details of the protocol to use
to route the call.
containing the reverse ordered dotted digit lookups, their translations and details of the protocol to use
to route the call.
For example:
$TTL 60
@
IN
SOA
<server name> root (
2009041201 ; serial number !!! change this to update record
60 ; refresh period
60 ; retry time
120 ; expire time
60 ; min ttl
)
SOA = Start of Authority record
IN
NS
<server name>
NS = Name Server name
0.2.1.7.5.5 IN
NAPTR
10
100
"u"
"E2U+sip"
"!^.*$!john.smith@example.com!"
.
IN
NAPTR
12
100
"u"
"E2U+h323"
"!^.*$!john.smith@example.com!"
.
1.2.1.7.5.5 IN
NAPTR
10
100
"u"
"E2U+sip"
"!^.*$!mary.jones@example.com!"
.
2.2.1.7.5.5 IN
NAPTR
10
100
"u"
"E2U+h323"
"!^.*$!peter.archibald@myco.com!" .
<digits dotted and reversed>
IN = Internet routing
NAPTR = record type
10 = order value (use lowest order value first)
100 = preference value if multiple entries have the same order value
"u" = the result is a routable URI
"E2U+sip" to make SIP call
"E2U+h323" to make h.323 call
Regular expression:
! = delimiter
replace ‘from start to end’
with name@domain
… usual Regex expressions can be used
. NAPTR replace
field not used