AudioCodes Mediant 800 User Manual page 674

CHAPTER 26 Manipulation
■ Action: Defines the action that is done if the incoming call matches the characteristics of the
rule (e.g., removes a user-defined number of digits from the left of the number).
The device searches the table from top to bottom for the first rule that matches the
characteristics of the incoming call. If it finds a matching rule, it applies the manipulation configured
for that rule. 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 configure the source prefix number as "551" for rule index 1 and "55" for rule index 2, the device
uses rule index 1 for numbers that start with 551 and uses rule index 2 for numbers that start with
550, 552, 553, and so on until 559. However, if you configure the source prefix number as "55" for
rule index 1 and "551" for rule index 2, the device applies rule index 1 to all numbers that start with
55, including numbers that start with 551. If the device doesn't find a matching rule, no manipulation
is done on the call.
You can perform a second "round" (additional) of source and destination number manipulations for
IP-to-Tel calls on an already manipulated number. The initial and additional number manipulation
rules are both configured in the number manipulation tables for IP-to-Tel calls. The additional
manipulation is performed on the initially manipulated number. Thus, for complex number
manipulation schemes, you only need to configure relatively few manipulation rules in these tables
(that would otherwise require many rules). To enable this additional manipulation, use the following
parameters:
■ Source number manipulation - PerformAdditionalIP2TELSourceManipulation
■ Destination number manipulation - PerformAdditionalIP2TELDestinationManipulation
Telephone number manipulation can be useful, for example, for 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 more
information on Caller ID for analog interfaces, see
■ For digital interfaces 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.
●
●
The following procedure describes how to configure number manipulation rules through the Web
interface. You can also configure this using the following management tools:
■ Destination Phone Number Manipulation for IP-to-Tel Calls table: ini file
[NumberMapIP2Tel] or CLI (configure voip > gateway manipulation dst-
number-map-ip2tel)
■ Destination Phone Number Manipulation for Tel-to-IP Calls table: ini file
[NumberMapTel2IP] or CLI (configure voip > gateway manipulation dst-
number-map-tel2ip)
■ Source Phone Number Manipulation for IP-to-Tel Calls table: ini file
[SourceNumberMapIP2Tel] or CLI (configure voip > gateway manipulation src-
number-map-ip2tel)
Number manipulation can be performed 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, use the 'IP to Tel Routing
Mode' parameter (RouteModeIP2Tel) and 'Tel to IP Routing Mode' parameter
(RouteModeTel2IP).
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, and then 5) adds the defined suffix.
Mediant 800 Gateway & E-SBC | User's Manual
Configuring Caller Display
- 634 -
Information.