3Com VCX v7111 User Manual page 123

Parameter Name in ini File Parameter Format
PSTNPrefix
Internal DNS Table
The internal DNS table, similar to a DNS resolution, translates hostnames into IP addresses.
This table is used when hostname translation is required (for example, Tel to IP Routing
table). Two different IP addresses can be assigned to the same hostname. If the hostname is
not found in this table, the gateway communicates with an external DNS server.
Assigning two IP addresses to hostname can be used for alternative routing (using the Tel to
IP Routing table).
To configure the internal DNS table:
Open the Internal DNS Table screen (Protocol Management menu > Routing Tables
1
submenu > Internal DNS Table option); the Internal DNS Table screen is displayed.
®
3Com VCX V7111 VoIP Gateway User Guide
PSTNPrefix = a,b,c,d,e
a = Destination Number Prefix
b = Hunt Group ID
c = Source Number Prefix
d = Source IP address (obtained from the Contact header in the INVITE
message)
e = IP Profile ID
Selection of hunt groups (for IP to Tel calls) is according to destination number,
source number and source IP address.
To support the in call alternative routing feature, users can use two
entries that support the same call, but assigned it with a different hunt
groups. The second entree functions as an alternative selection if the
first rule fails as a result of one of the release reasons listed in the
AltRouteCauseIP2Tel table.
An optional IP ProfileID (1 to 4) can be applied to each routing rule.
The Source IP Address can include the x wildcard to represent single
digits. For example: 10.8.8.xx represents all IP addresses between
10.8.8.10 to 10.8.8.99. The '*' wildcard represents any number
between 0 and 255, for example, 10.8.8.* represents all addresses
between 10.8.8.0 and 10.8.8.255.
For available notations that represent multiple numbers, see
Plan Notation.
This parameter can appear up to 24 times.
Dialing
123