User's Manual 100 Document #: LTRT-23510
MP-26x/MP-27x Multimedia Home Gateway
9.2.1 Syntax for Digit Maps and Dial Plans
Digit maps and dial plans are defined using special syntax rules, configured in the 'Dialing'
screen (refer to 'Configuring Dialing Parameters' on page 96).
Digit Maps: A phone's digit map allows MP-20x to know when an entered (dialed)
telephone number is complete and therefore, when it should immediately initiate the
call. If the phone digit map is defined incorrectly, MP-20x might start to dial before the
telephone user has entered all the required digits. A digit map is defined either by a
(case insensitive) "string" or by a list of strings. Each string in the list is an alternative
numbering scheme, specified either as a set of digits or as an expression over which
MP-20x attempts to find a shortest possible match. The syntax that can be used in
each numbering scheme is described in the table below.
Dial Plans: A dial plan translates specific patterns into specific SIP destination
addresses. For example, dial plan rule "4xxx=Line_\\\@10.1.2.3" sends a dialed
number consisting of the digit 4 followed by any three digits to IP address 10.1.2.3.
The syntax of the pattern on the left of the equal (=) sign is described in the table
below.
Table 9-3: Dial Plan (for Left of '=' Sign) and Digit Map Syntax
Type Syntax
Digit
A digit from "0" to "9".
DTMF
A digit or one of the symbols "A", "B", "C", "D", "#", or "*".
Wildcard "x"
The symbol "x" denotes any digit from "0" through "9".
Range
Two digits separated by a hyphen ("-") and enclosed by square brackets. For
example, the digit pattern "[2-5]" denotes any dialed digit that matches 2, 3, 4, or 5.
Separation of
Patterns
The bar "|" symbol is used to separate multiple digit patterns in your digit map.
An example of a digit map is shown below and described in the subsequent table:
[2-9]11|0|100|101|1[2-9]xxxxxxxxx|*xx|4xxx
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