I N I T I A L C O N F I G U R A T I O N A N D B A C K G R O U N D I N F O R M A T I O N
Rev H
33 of 244
5
Theory of Operation
3.1 Dial Plan for SIP and H.323
5.1.1
Default Dial Plan
A dial plan provides the unit with a map that is used to determine when a complete number
has been dialed. The number is then passed on to the SIP Server\Gatekeeper, which resolves it
into an IP address.
The default dial plan (>#|[2-9]xxxxxxxxx|1[2-9]xxxxxxxxx|x.T) includes strings separated by
the vertical bar character “|”. Once a match between one of the strings and the keys that have
been dialed is reached, the Gateway contacts the SIP Server\Gatekeeper and attempts to make
a call. The default dial plan includes the string [2-9]xxxxxxxxx meaning that dialed numbers
can be 10 digits long starting with any digit in the range 2-9. The string x.T (or x.t) in the
default dial plan means that after any dialed number and a pause of 4 seconds an attempt to
make a call is made. The user can use the default dial plan or set up an alternative plan. For
detailed explanation of possible dial plan schemes see following sections.
•
To set the dial plan when using the
H.323 protocol
. To set the dial plan when using the H.323 protocol via Telnet, see
Setting the Dial Plan Matching String
•
To set the dial plan when using the
SIP protocol
via the Web, see
Configuration, SIP Extensions, Line Configuration
on page 143. You can configure a
Dial Plan of up to 254 characters in the Dial Plan field of the SIP Web page. To set the
dial plan when using the SIP protocol via Telnet, see
Setting the Dial Plan Matching
5.1.2
Dial Plan Syntax
A dial plan is a case-insensitive character string or a list of strings. Any telephone keypad
character is allowed:
| “0” | “1” | “2” | “3” | “4” | “5” | “6” | “7” | “9” | “#” | “
*
” |
The following table lists the Dial Plan characters.
Table 4-1 Dial Plan Characters
Character(s)
Description
x
One of the allowed telephone keypad characters (except * and #).
T
or
t
Short for
Timer
. Implies a four-second delay, and can only be used at the end
of a string.
x.
Implies any number of characters (none or more).
>
#
Defines the character
#
as a terminating character. When dialing # the dialed
number preceding the character # is immediately sent. The terminating
character can only be entered after at least one user-dialed digit. Optionally the
Dial Plan >* can be used to define the character * as the terminating character.
Summary of Contents for AC - 232 - TX
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