AudioCodes Mediant 800 MSBG User Manual page 152

3.3.2.11.2.2 Configuring Number Manipulation Tables
The device provides number manipulation tables for incoming (IP-to-Tel) and outgoing
(Tel-to-IP) calls. These tables are used to modify the destination and/or source telephone
numbers so that the calls can be routed correctly. For example, telephone number
manipulation can be implemented by the following:
Stripping or adding dialing plan digits from or to the number, respectively. For
example, a user may need to first dial 9 before dialing the phone number to indicate
an external line. This number 9 can then be removed by number manipulation before
the call is setup.
Allowing or blocking Caller ID information according to destination or source prefixes.
For detailed information on Caller ID, see Configuring Caller Display Information on
page 185.
For digital modules only: Assigning Numbering Plan Indicator (NPI) and Type of
Numbering (TON) to IP-to-Tel calls. The device can use a single global setting for
NPI/TON classification or it can use the setting in the manipulation tables on a call-by-
call basis.
Number manipulation is configured in the following tables:
Tel-to-IP calls:
•
Destination Phone Number Manipulation Table for Tel-to-IP Calls
(NumberMapTel2IP ini file parameter) - up to 120 entries
•
Source Phone Number Manipulation Table for Tel-to-IP Calls
(SourceNumberMapTel2IP ini file parameter) - up to 120 entries
IP-to-Tel calls:
•
Destination Phone Number Manipulation Table for IP-to-Tel Calls
(NumberMapIP2Tel ini file parameter) - up to 100 entries
•
Source Phone Number Manipulation Table for IP-to-Tel Calls
(SourceNumberMapIP2Tel ini file parameter) - up to 120 entries
The device searches a matching manipulation rule starting from the first entry (i.e., top of
the table). In other words, a rule at the top of the table takes precedence over a rule
defined lower down in the table. Therefore, define more specific rules above more generic
rules. For example, if you enter 551 in Index 1 and 55 in Index 2, the device applies rule 1
to numbers that start with 551 and applies rule 2 to numbers that start with 550, 552, 553,
and so on until 559. However, if you enter 55 in Index 1 and 551 in Index 2, the device
applies rule 1 to all numbers that start with 55, including numbers that start with 551.
You can perform a second "round" (additional) of destination (NumberMapIP2Tel
parameter) and source (SourceNumberMapIP2Tel parameter) number manipulations for
IP-to-Tel calls on an already manipulated number. The initial and additional number
manipulation rules are both configured in these tables. The additional manipulation is
performed on the initially manipulated number. Therefore, for complex number
manipulation schemes, you only need to configure relatively few manipulation rules in
these tables (that would otherwise require many rules). This feature is enabled using the
following parameters:
PerformAdditionalIP2TELSourceManipulation for source number manipulation
PerformAdditionalIP2TELDestinationManipulation for destination number manipulation
SIP User's Manual 152
Mediant 800 MSBG
Document #: LTRT-12804