IP8820/IP8830/IP8840
Installer Guide
78
Using the Digit Map Table, a string of 512 characters may be entered to define the dial plan.
Within the string individual numbers are entered, separated by a ‘|’. In addition to dial pad digits,
special characters may be entered as follows:
- An ‘x’ matches any single digit, (0 to 9).
- A ‘T’ inserts a timed pause for additional digits.
- A ‘.’ matches any number of occurrences of a digit, including zero occurrences and
includes special character matches.
- A ‘+’ matches any number of occurrences of the previous match, including special
characters.
- The ‘[ ]’ matches a digit from a group of digits. This character combination is used with
“.” to define a range, [2-6] matches any digit from 2 to 6 inclusive.
The dial plan can include modification of a matching dialed number before call set-up. The Digit
Map Process defines the modification procedures for a number. The process may include:
- TRNC
defines the number of digits to delete from the dialed number.
- Pre
defines digits to insert in the front of the truncated number.
- Post
defines the digits to insert at the end of the truncated number.
The following are examples of Dial Plans using the digit map tables.
Simple Dial Plan
Customer requirement:
Process the call after any 7 digit number is dialed or if the Operator is dialed at digit ‘0’.
Digit map routing entry
The digit map of this Dial Plan is (0T|xxxxxxx).
From this map, if the user dials 0 as the first digit, the IP Phone will wait for the pause time for
additional digits. After the pause, if no additional digits are dialed, the phone places a call to the
Operator. In addition, after the user dials any seven digits, the call is processed.
Complex Dial Plan
Customer requirement:
Process the call after the local operator at 0, long distance operator at 00, a four-digit local
extension number starting with 3,4 or 5, a seven-digit local number prefixed by an 8, two-digit
number preceded by star (‘*’), a ten digit long distance number prefixed by 91, or an
international number starting with 9011 is dialed.
Digit map routing entry
The dial plan for this is (0T|00T|[3-5]xxx|8xxxxxxx|*xx|91xxxxxxxxxx|9011x.T).
2
nd
Dial Tone
A second 512-character string map is employed to provide 2
nd
Dial Tone.
Customer requirements:
To provide second dial tone after a ‘9’ is dialed, establish a Dial Plan as below.
In the Digit Map (2
nd
Dial Tone) text box, the dial plan for this is (9|).
To change Digit Map Table parameters:
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