Cisco Cisco Expressway Maintenance Manual
Configuring DNS servers for ENUM and URI
dialing
dialing
DNS servers are required to support ENUM and URI dialing:
n
ENUM dialing: to query for NAPTR records that map E.164 numbers to URIs
n
URI dialing: to look up endpoints that cannot be accessed via neighbor systems
To configure the DNS servers used by the Expressway for DNS queries:
1. Go to the
DNS
page (
System > DNS
).
2. Enter in the Address 1 to Address 5 fields the IP addresses of up to 5 DNS servers that the Expressway
will query when attempting to locate a domain. These fields must use an IP address, not a FQDN.
Cisco Expressway Administrator Guide (X8.5)
Page 175 of 394
Dial plan and call processing
Configuring DNS servers for ENUM and URI dialing