3Com V6100, User Manual Manual, Page: 89 / 496

V6100 and V7122 User Guide
89
Number Manipulation Tables
The VoIP gateway provides four Number Manipulation tables for incoming and outgoing
calls. These tables are used to modify the destination and source telephone numbers so that
the calls can be routed correctly.
The Manipulation Tables are:
ƒ
Destination Phone Number Manipulation Table for IP
Æ
Tel calls
ƒ
Destination Phone Number Manipulation Table for Tel
Æ
IP call
ƒ
Source Phone Number Manipulation Table for IP
Æ
Tel calls
ƒ
Source Phone Number Manipulation Table for Tel
Æ
IP calls
Number manipulation can be performed either before or after a routing decision is
made. For example, you can route a call to a specific trunk group according to its
original number, and then you can remove/add a prefix to that number before it is
routed. To control when number manipulation is done, set the ‘RouteModeIP2Tel’
and the ‘RouteModeTel2IP’ parameters. For information on these parameters, see
Table 51 .
Possible uses for number manipulation can be as follows:
ƒ
To strip/add dialing plan digits from/to the number. For example, a user could dial 9 in
front of each number to indicate an external line. This number (9) can be removed here
before (after) the call is setup.
ƒ
Assignment of NPI/TON to IP
Æ
Tel calls. The VoIP gateway can use a single global
setting for NPI/TON classification or it can use the setting in this table on a call by call
basis. Control for this is done using ‘Protocol Management>Protocol
Definition>Destination/Source Number Encoding Type’.
ƒ
Allow / disallow Caller ID information to be sent according to destination / source
prefixes.
To configure the Number Manipulation tables:
1 Open the Number Manipulation screen you want to configure ( Protocol Management
menu > Manipulation Tables submenu); the relevant Manipulation table screen is
displayed. Figure 36 shows the ‘Source Phone Number Manipulation Table for Tel
Æ
IP
calls’.