Nortel VoIP Gateway, Configuration Manual

Page: 46 / 220

46 Configuring the Number Manipulation tables
P0606298 02
Configuring number manipulation for Destination Phone Numbers
for Norstar to IP calls
This number manipulation table is used to manipulate the digits that are dialed into the VoIP
Gateway prior to setting up the call. Numbers that are dialed by the user are first checked in this
table to see if there is a match. If there is a match, the values entered into the table are used to
manipulate the digits. This is programmed in "Protocol Management / Protocol Definition" by
changing the setting for "Tel to IP Routing Mode". This manipulation can be done either before or
after a routing decision is made for the call. In general, a routing decision will be made before
manipulation.
Uses for manipulation can be as follows:
• To strip dialing plan digits from the number. For example, a user might dial 6 in front of each
number in order to indicate a private network number. If this leading digit is not removed by
Norstar routing, it may be removed here before the call is setup. This would allow the
destination number to be understood by a gatekeeper or by the destination gateway (for
routing to the correct output hunt group).
• Assignment of NPI / TON. 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 Number Encoding
Type”
To configure the Destination Phone Number Manipulation Table for TEL->IP calls:
1 Access the web interface.
2
Click the Protocol Management button.
3 Point to the Manipulation Tables tab and click the Tel -> IP Dest Numbers link.
The
Destination Phone Number Manipulation Table for TEL->IP calls
screen appears.