VoIP Phone User
’
s Manual
Timer ::= "T" | "t"
Letter ::= Digit | Timer | "#" | "*" | "A" | "a" | "B" | "b" | "C" | "c"
| "D" | "d"
Range ::= "X" | "x" -- matches any digit
| "[" Letters "]" -- matches any of the specified letters
Letters::= Subrange | Subrange Letters
Subrange::= Letter -- matches the specified letter
| Digit "-" Digit -- matches any digit between first and last
Position::= Letter | Range
StringElement::= Position -- matches any occurrence of the position
| Position "." -- matches an arbitrary number of occurrences including 0
String ::= StringElement | StringElement String
StringList::= String | String "|" StringList
DialPlan::= String | "(" StringList ")"
A dial plan, according to this syntax, is defined either by a (case insensitive) string or
by a list of strings. Regardless of the above syntax a timer is only allowed if it appears in
the last position in a string (12T3 is not valid). Each string is an alternate numbering
scheme. The unit will process the dial plan by comparing the current dial string against the
dial plan, if the result is under-qualified (partial matches at least one entry) then it will do
nothing further. If the result matches or is over-qualified (no further digits could possibly
produce a match) then send the string to the gatekeeper and clear the dial string.
The Timer T is activated when it is all that is required to produce a match. The period
of timer T is 4 seconds. For example a dial plan of (xxxT|xxxxx) will match immediately if 5
digits are entered, it will also match after a 4 second pause when 3 digits are entered.
D.1 Sample Dial Plans
Simple Dial Plan
This allows dialing of 7 digit numbers (e.g. 5551234) or an operator on 0. Dial plan is
(0T|xxxxxxx)
Non-dialed Line Dial Plan
As soon as handset is lifted the unit contacts the gatekeeper (used for systems where
DTMF detection is done in-call). Dial plan is (x.) i.e. match against 0 (or more) digits. Note:
the dot
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