2.7.5.12.2
GROUP EXCHANGE LINES
21 to
It is possible to assign exchange lines in up to 4 groups. The groups are assigned sequentially
based on the numerical order of the exchange line connections to the system. The number of
the last exchange line in the group must be programmed. If the exchange line number is less
then 10, a leading zero “0” must be entered, therefore two digits must be programmed. When the
number of groups are less than 4, the last entry must be “O”,
Example 1.
For a 2260 system, group 1 (line 1 to line
group 2 (line 4 to line 7) group 3 (line 8 to line
and automatically group 4, the last group is (line 12 to line
DISPLAY
Press DSS 21
0
0 x
x
(Group
0
0 0
3
(Line 1 to 3 are in 1
group
0
0 x
x
Dial
0
0 0
0
DSS 21 LED goes off.
Press DSS 22
0
0 x
x
(Group
0
0 0
7
(Line 4 to 7 are in
group
0
0 0
0
Dial
off.
0
0 0
0
DSS 22 LED
Press DSS 23
0
0 x
x
(Group
0
0 1
1
(Line 8 to 11 are in 3
group
and the last lines are in group 4.)
0
0 0
0
Dial
0
0 0 0
DSS 23 LED goes off.
Example 2.
Only two groups assigned group 1 (line
Press DSS 21
to line 9) and group 2 (line 10 and remaining lines)
DISPLAY
0
0
x
x
(Group
Dial
DSS 21 LED goes off.
Press DSS 22
Dial
DSS 22 LED goes off.
0
0
0
9
(Line 1 to 9 are in group 1.)
0
0
0
0
0
0
0
0
0
0
x
x
(Group
0
0
0
0
(Line 10 to the last
line are in group
0
0
0
0
0
0
0
0
2.7.5.13 ACCESS BARRING NO ACCESS TO EXCHANGE LINE GROUP
DSS key 37 is used to nominate a particular exchange line which will split the exchange lines
into two groups the lower group and the higher group, according to the sequence of the
exchange line connections on the system.
The assigned exchange line number will be the last exchange line in the lower group.
If this facility is not used, programme
Example: Divide the exchange lines so that exchange line 1 to exchange line 7 are in the lower
group, exchange line 8 up to the maximum exchange line
12 or 22) are
automatically in the higher group.
DISPLAY
Press DSS 37
0 0 x x
0
0 0 7
(line 7)
Dial
DSS 37 LED goes off.
Now, according to section 2.7.5.15 stations can be programmed to access all exchange lines or
only exchange lines in the lower group. Note that access barring by digit analysis is not applied
to the higher group of lines.
98
ISSUE 2