When a user presses the speaker button on the phone, the following sequence of events begins:
1. The phone begins to collect the dialed digits. The interdigit timer starts to track the time that elapses
between digits.
2. If the interdigit timer value is reached, or if another terminating event occurs, the phone compares the
dialed digits with the IP phone dial plan. This dial plan is configured in the phone web user interface in
Voice > Ext(n) under the Dial Plan section.
Digit Sequences
A dial plan contains a series of digit sequences, separated by the | character. The entire collection of sequences
is enclosed within parentheses. Each digit sequence within the dial plan consists of a series of elements that
are individually matched to the keys that the user presses.
White space is ignored, but can be used for readability.
FunctionDigit Sequence
Characters that represent a key that the user must press on the phone
keypad.
0 1 2 3 4 5 6 7 8 9 0 * #
Any character on the phone keypad.x
Characters within square brackets create a list of accepted key presses.
The user can press any one of the keys in the list.
A numeric range, for example, [2-9] allows a user to press any one
digit from 2 through 9.
A numeric range can include other characters. For example, [35-8*]
allows a user to press 3, 5, 6, 7, 8, or *.
[sequence]
A period indicates element repetition. The dial plan accepts 0 or more
entries of the digit. For example, 01. allows users to enter 0, 01, 011,
0111, and so forth.
. (period)
This format indicates that certain dialed digits are replaced by the
substituted characters when the sequence is transmitted. The dialed
digits can be zero to 9. For example:
<8:1650>xxxxxxx
When the user presses 8 followed by a seven-digit number, the system
automatically replaces the dialed 8 with the sequence 1650. If the user
dials 85550112, the system transmits 16505550112.
If the dialed parameter is empty and there is a value in the substituted
field, no digits are replaced and the substituted value is always
prepended to the transmitted string. For example:
<:1>xxxxxxxxxx
When the user dials 9725550112, the number 1 is added at the
beginning of the sequence; the system transmits 19725550112.
<dialed:substituted>
Cisco IP Phone 8800 Series Multiplatform Phone Administration Guide for Release 11.3(1) and Later
394
Cisco IP Phone Installation
Digit Sequences
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