Version 7.2 747 Mediant 1000B Gateway & E-SBC
User's Manual 43. Software Upgrade
43.1.7.2 Dialing Plans for Digit Collection
The device enables you to configure multiple dialing plans in an external Dial Plan file,
which can be installed on the device. If a Dial Plan file is implemented, the device first
attempts to locate a matching digit pattern in a specified Dial Plan index listed in the file
and if not found, attempts to locate a matching digit pattern in the Digit Map (see the
procedure described later on in this section).
Note:
• It may be useful to configure both Dial Plan file and Digit Maps. For example, the
Digit Map can be used for complex digit patterns (which are not supported by the
Dial Plan file) and the Dial Plan can be used for long lists of relatively simple digit
patterns. In addition, as timeout between digits is not supported by the Dial Plan,
the Digit Map can be used to configure digit patterns that are shorter than those in
the Dial Plan or left at default (MaxDigits parameter). For example, the “xx.T” digit
map instructs the device to use the Dial Plan and if no matching digit pattern is
found, it waits for two more digits and then after a timeout (TimeBetweenDigits
parameter), it sends the collected digits. This ensures that calls are not rejected as
a result of their digit pattern not been completed in the Dial Plan.
• This section is applicable only to the Gateway application.
The Dial Plan is used for the following:
ISDN Overlap Dialing / FXS, and FXO collecting digit mode (Tel-to-IP calls): The file
allows the device to know when digit collection ends, after which it starts sending all
the collected (or dialed) digits in the outgoing INVITE message. This also provides
enhanced digit mapping.
CAS E1 MF-CR2 (Tel-to-IP calls): Useful for E1 MF-CR2 variants that do not support
I-15 terminating digits (e.g., in Brazil and Mexico). The Dial Plan file allows the device
to detect end-of-dialing in such cases. The CasTrunkDialPlanName_x ini file
parameter determines which dial plan (in the Dial Plan file) to use for a specific trunk.
Note:
• To use the Dial Plan file, you must also use a special CAS .dat file that supports
this feature. For more information, contact your AudioCodes sales representative.
• For E1 CAS MFC-R2 variants, which don't support terminating digit for the called
party number, usually I-15, the Dial Plan file and the DigitMapping parameter are
ignored. Instead, you can define a Dial Plan template per trunk using the
parameter CasTrunkDialPlanName_x.
The Dial Plan file can contain up to 8 Dial Plans (Dial Plan indices), with a total of up to
8,000 dialing rules (lines) of distinct prefixes (e.g. area codes, international telephone
number patterns) for the PSTN to which the device is connected.
The Dial Plan file is created in a textual ini file with the following syntax:
<called number prefix>,<total digits to wait before sending>
Each new Dial Plan index begins with a Dial Plan name enclosed in square brackets
"[...]" on a new line.
Each line under the Dial Plan index defines a dialing prefix and the number of digits
expected to follow that prefix. The prefix is separated by a comma "," from the number
of additional digits.
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