AudioCodes Mediant 3000 User Manual page 283

SIP User's Manual
The device manipulates the number in the following order:
1. Strips digits from the left of the number.
2. Strips digits from the right of the number.
3. Retains the defined number of digits.
4. Adds the defined prefix.
5. Adds the defined suffix.
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
Telephone number manipulation can be useful, for example, for doing 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.

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.
Notes:
Version 6.4
•
Number manipulation can occur 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 or add a prefix
to that number before it is routed. To determine when number
manipulation is performed, configure the 'IP to Tel Routing Mode'
parameter (RouteModeIP2Tel) described in 'Configuring Inbound IP
Routing Table' on page 306, and 'Tel to IP Routing Mode' parameter
(RouteModeTel2IP) described in 'Configuring Outbound IP Routing
Table' on page 298.
•
For configuring number manipulation using ini file table parameters
NumberMapIP2Tel, NumberMapTel2IP, SourceNumberMapIP2Tel, and
SourceNumberMapTel2IP, see 'Number Manipulation Parameters' on
page 732.
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18. GW and IP to IP
November 2011