Example: Adjust the clock to 4.25 pm on Wednesday the 3rd of September, 1985.
DISPLAY
PRESS
“SET”
PRESS
“CLOCK”
2 2
1
1
“0425”
1
1
“CLOCK” x 2
2
“0903”
2
2
“CLOCK” x 3
3
3
3
“CLOCK” x 4
4
Wed
“3”
4
“SET”
2.7.4.28 Access Barring by Digit Analysis (F-l 5)
a m
2 5
2 5
(4.25 pm)
0 9 0 3
0 9 0 3
(3rd of
9
8
5
3
(Wednesday)
(enter clock set mode)
(leave clock set
Stations may be assigned to one of 6 classes for access
Class A
Unrestricted
Class B
Barred to ISD, STD allowed
Limited to
codes
Class D
Local calls
Class E
PABX calls
Intercom Calls only.
Provision is made to store some common allowed codes which any station may dial regardless of barring
class.
To provide the access barring facility the following data must be programmed into the system.
Class A
No data required.
ISD Codes (data must be programmed.
Up to four codes of four digits each may be programmed.
The barred STD access codes (data and allowed
numbers (data must
be programmed.
Stations with class C access barring may dial pre-programmed
numbers,
but are barred from other STD or ISD calls. Up to 16 allowed numbers of up to 20
digits each may be programmed. If a number is longer than the digits programmed, it
can be
providing the programmed digits agree with the first digits
Class D
The barred STD access codes (data and number length limiter (data must be
programmed.
Up to sixteen numbers of up to four digits each may be programmed as STD codes.
In the centre of capital cities “0” is usually sufficient, however in outer metropolitan
or country areas a more elaborate set of codes is required.
The number length limiter sets the maximum number of digits that may be
for a local call. In major capital cities this is
although in other areas the number
length limit may vary. Any number between 0 and 30 may be programmed.
The PABX trunk access code (data must be programmed. Up to four codes of up
to two digits each may be programmed.
This data must be programmed if any outside lines have been assigned as PABX
lines in 2.7.4.3.
65
AN-61 6
ISSUE 1