Aastra VentureIP 480i, Руководство администратора

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IP Phone SIP Admin Guide 51
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SIP Local Dial Plan
A dial plan describes the number
and pattern of digits that a user
dials to reach a particular
telephone number. Access codes,
area codes, specialized codes, and
combinations of the number of
digits dialed are all part of a dial
plan. For instance, the North
American Public Switched
Telephone Network (PSTN) uses a
10-digit dial plan that includes a 3-
digit area code and a 7-digit
telephone number. Most PBXs
support variable length dial plans
that use 3 to 11 digits. Dial plans
must comply with the telephone
networks to which they connect.
Only totally private voice networks
that are not linked to the PSTN or
to other PBXs can use any dial
plan.
The IP phones have local dial plan
capacity. You configure the SIP
Local Dial Plan using the Aastra
Web UI or the configuration files.
The IP phone SIP local dial plan
available symbols are as follows:
Dial Plan Example
An example of a SIP Local Dial
Plan is:
[01]XXX|[2-8]XXXX|91XXXXXX
XXXX|X+.|*XX
The dial plan in the above example
can accept any 4-digit dial strings
that begin with a '0' or '1', any 5-
digit dial strings that begin with a
'2' up to '8', any 12-digit dial strings
that begin with '91', any non-
empty digit string that ends with a
'.' or any 2-digit code that begins
with a '*'.
SIP Dial Plan Terminator
The IP phone allows the
configuration of a dial plan
terminator. When you configure
the IP phone to use a dial plan
terminator or timeout (such as the
pound symbol (#)) the phone waits
4 or 5 seconds after you pick up the
handset or press a key to make a
call.
You can configure the dial plan
terminator using Aastra Web UI or
the configuration files.
Symbol Description
0, 1, 2,
3, 4, 5,
6, 7, 8, 9 Digit symbol
X Match any digit symbol
(wildcard)
*, #, . Other keypad symbol
| Expression inclusive OR
+ 0 or more of the preced-
ing digit symbol or []
expression
[] Symbol inclusive OR
- Used only with [],
represent a range of
acceptable symbols; For
example, [2-8]