BT Revelation, Руководство пользователя

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Call restrictions
Extensions access to outgoing
lines
This feature lets you decide which exchange
lines each extension has access to for
outgoing calls.
In default all extensions have access to all lines.
If you have a Systemphone, you can use the
Busy Lamp Field to show which extensions
have been programmed. See page
37.
• From the programming position, dial
70
followed by the system PIN. The
Systemphone shows
Di al admi
n
code.
•Dial the admin code
(8).
• Enter the line number.
• Enter the extensions which should not have
access to that line number.
• Press # to enter another line, or press ##
then
HANDS FREE
to finish programming.
Classes of Service
Each extension may be programmed for a
Class of service which determines the type of
call the extension is allowed to dial. There are
five different Classes of service. In default, all
extensions are in Class 1.
The following table shows the types of
restriction for the different Classes of service
available:
Type of restriction
Class
No restriction
1
Restrict international calls (010, 00)
2
and directory enquiry calls (153, 192)
Restrict international and national calls (0) 3
and directory enquiry calls (153, 192)
Internal calls only (emergency allowed)
4
Restricted numbers (programmable)
5
You should program extensions into the Class
appropriate for the type of calls the extension
is permitted to dial. If the extension is to be
allowed to dial all numbers they are entered
into Class 1 .
If extensions are t o be restricted from dialling
international calls they should be put into
Class
2.
Similarly, if an extension is to be
limited to local calls only they are put into
Class
3. Class 4 restricts the extension to
internal calls and emergency external calls
only.
Exception codes
If it is found that the basic restriction patterns
in Classes
2
and
3
are too restrictive,
additional codes may be allowed within each
of these Classes.
For example, you may put extensions in
Class
2
in order to restrict international calls.
However, you may wish the extension users
to be able to dial one particular international
country or city. A maximum of seven digits
may be programmed as an exception code.
You can request that your BT engineer
program the country code as an exception
code for Class
2.
Exception codes must be programmed by your
BT engineer.
Restriction table (Class 5)
In addition to Classes 1 to
4,
a Class
5
is
provided which may be combined with
Classes 1,
2
and
3.
Your BT engineer
can
program Class 5 to include additional
numbers or codes which are to be restricted,
and are not catered for in the default setting.
For example, you may wish to ensure that all
'party line' numbers are restricted.
These additional restriction codes may be
allocated to individual extensions by entering
the extension into Class
5
as well as Class 1,
2
or
3.
Another option is to restrict all
extensions from dialling these numbers by
programming all extensions into Class
5
using system-wide Class
5
programming as
described on the following page.
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