For SIP gateway lookups when the gateway IP Address is not known, you can configure DNS servers to locate SIP servers based on Host Name. Up to fifteen total DNS and ENUM servers combined can be configured. For example, the IMG supports fifteen ENUM servers and zero DNS servers or Fifteen DNS Servers and zero ENUM servers. Any combination of DNS to ENUM servers is supported as long as the total combined is no more than fifteen. Lookup for SRV Records support was added to the IMG. See DNS Query using SRV Record for more information on that topic
Right-click External Network
Elements and select New DNS
Servers.
Up to and including software version 10.5.3 the DNS Servers pane had
the Domain Name field as displayed here: DNS
Servers
In software 10.5.3 ER1 the functionality changed so that the DNS Query
Type can be just an A-Record, just SRV Record or both A-Record and
SRV Record. DNS Servers_1053_ER1
In the Domain Name field, enter the Domain Name of your network.
Select from drop down menu which type of query to perform. A-Record, SRV Record, or both. (10.5.3 ER1 only)
Right click DNS Servers
and select New DNS Server.
The DNS Server pane appears.
Enter a name to identify the DNS server and enter a Server IP Address.
Repeat steps 2 - 4 for each server (up to 15 total).
See the DNS Server pane reference for more details.
Perform the following for each IMG for which you require DNS Server access:
Right-click the physical IMG entry and select New
DNS Client.
The DNS Client pane appears.
Note: The DNS Client Network Interface field is automatically populated with the IP Address of the IMG.
For each field: Primary, Secondary and Tertiary Server, select a DNS server (which you have previously configured) from the drop-down list.