DS Series PBX Technical Reference And Installation Guide
173
XV.3.H. EX200 (8T0/0) ISDN BRI LINE MODULE:
Pairs in the CBL-16 cable and connected lines have been stated in the table below.
Pair No
Color & Signal of the Pair
Line no
1
White (
T1
) - Blue (
R1
)
2
White (
R2
) – Orange (
T2
)
ISDN line 1
3
White (
T1
) – Green (
R1
)
4
White (
R2
) – Brown (
T2
)
ISDN line 2
5
White (
T1
) – Gray (
R1
)
6
Red (
R2
) – Blue (
T2
)
ISDN line 3
7
Red (
T1
) – Orange (
R1
)
8
Red (
R2
) – Green (
T2
)
ISDN line 4
9
Red (
T1
) – Brown (
R1
)
10
Red (
R2
) – Gray (
T2
)
ISDN line 5
11
Black (
T1
) – Blue (
R1
)
12
Black (
R2
) – Orange (
T2
)
ISDN line 6
13
Black (
T1
) – Green (
R1
)
14
Black (
R2
) – Brown (
T2
)
ISDN line 7
15
Black (
T1
) – Gray (
R1
)
16
Yellow (
R2
) – Blue (
T2
)
ISDN line 8
Order of the 4 wires in the cable mentioned above matters, which are to be used for
connection to ISDN lines.
The signals represented as “R” are the receiving signals of DS200, whereas the signals
represented as “T” are the transmitting signals of DS200. Attention to that order is needed
during cabling.
Pinouts pertaining to cabling between DS200 and the lines exiting NT1 (line termination
device) have been stated in the table below:
Signal with respect to
NT1
RJ45 pins on NT1
side
CBL-16 wires on
DS200 side
Signal with respect to
DS200
T1
4
1
R1
R1
3
2
T1
R2
6
3
T2
T2
5
4
R2
An ISDN BRI line can be extended until at most 1 km. away from the NT device with 0.5 mm.
copper cable. However, it is extremely important that there is no splice on the cable and it is
supposed to be isolated from environmental effects.
Summary of Contents for DS200
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