SmartLink 4020 Getting Started Guide | C • Dial plans |
|
|
Introduction
The MGCP and SIP code will allow provisioning (via web browser) of the dial plan. A dial plan gives the unit a map to determine when a complete number has been entered and should be passed to the SIP server or gate- keeper for resolution into a destination IP address. Dial plans are expressed using the same syntax as used by MGCP NCS specification.
The formal syntax of the dial plan is described by the following notation:
Digit ::= "0" "1" "2" "3" "4" "5" "6" "7" "8" "9"
Timer ::= "T" "t"
Letter ::= Digit Timer "#" "*" "A" "a" "B" "b" "C" "c" "D" "d"
Range ::= "X" "x"
"[" Letters "]"
Subrange::= Letter
Digit
StringElement::= Position
Position "."
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. Regard- less 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
Sample Dial Plans
Simple Dial Plan
Allows dialing of
Non-dialed Line Dial Plan
As soon as handset is lifted the unit contacts the gatekeeper (used for systems where DTMF detection is done
Complex Dial Plan
•Local operator on 0, long distance operator on 00
•
•
Introduction | 95 |