BroadCloud SIP Trunk
AudioCodes Mediant BRI/PRI Gateway 32 Document #: LTRT-12393
4.6 Step 6: Configure the Number of Digits to be Present
to the PBX
This step shows how to configure the Mediant BRI/PRI Gateway's number manipulation
rules, which implement on number of digits to be present to the PBX.
The number manipulation tables let you configure rules for manipulating source and
destination telephone numbers for IP-to-Tel (BroadCloud to PBX) and Tel-to-IP (PBX-to-
BroadCloud) calls. The number manipulation tables include the following:
Tel-to-IP calls:
• Source Phone Number Manipulation Table for Tel > IP Calls (up to 120 entries)
• Destination Phone Number Manipulation Table for Tel > IP Calls (up to 120
entries)
IP-to-Tel calls:
• Source Phone Number Manipulation Table for IP > Tel Calls (up to 120 entries)
• Destination Phone Number Manipulation Table for IP > Tel Calls (up to 120
entries)
The number manipulation tables provide two configuration areas:
Matching characteristics (Rule) of incoming call, for example, prefix of destination
number.
Manipulation operation (Action), for example, remove user-defined number of digits
from the left of the number.
If the incoming call matches the characteristics of a rule, its manipulation action is applied.
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. Thus, 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.
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.
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 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.
The following procedure describes how to configure number manipulation rules in the Web
interface.
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