Cisco Cisco TelePresence Video Communication Server Expressway

Configuring the Cisco VCS 

An ENUM zone on the Cisco VCS and its associated search rule are used to construct a query for a 
DNS server with NAPTR records that describe how to convert E.164 numbers into one or more URIs. 

In this deployment scenario, we want to query DNS for NAPTR records based on the number that was 
dialed, ignoring any domain information that has been appended. This requires 

 

an ENUM zone configured with a DNS domain suffix to be used for the lookup 

 

a search rule that transforms incoming dialed aliases into digit only numbers 

1.  Go to the Zones page (VCS configuration > Zones). 

2. Click 

New. You are taken to the Create zone page. 

3.  Configure the fields as follows: 

Enter the name you want to give this zone, for example “ENUM lookup zone” 

Select ENUM 

Leave as default setting 

Enter the suffix of the DNS location where the NAPTR records for this ENUM 
lookup are held, for example enum.search.com 

Select On if the result of the ENUM lookup is allowed to be used to generate 
an H.323 call 

Select On if the result of the ENUM lookup is allowed to be used to generate a 
SIP call 

 

 

4. Click 

Create zone. 

1.  Go to the Search rules page (VCS configuration > Search rules > Rules). 

2. Click 

New. You are taken to the Create search rule page. 

3.  Configure the fields as follows: 

 

Enter a name for the rule, for example “ENUM lookup” 

Cisco VCS Deployment Guide: ENUM dialing on Cisco VCS (X5.1) 

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