168
XV.3.C. EX200 (0/8S0) ISDN BRI EXTENSION
MODULE:
Pairs in the CBL-16 cable and connected extensions have been stated in the table below.
Pair No
Color & Signal of the Pair
Extension no
1
White (
R1
) - Blue (
T1
)
2
White (
T2
) – Orange (
R2
)
ISDN Extension 1
3
White (
R1
) – Green (
T1
)
4
White (
T2
) – Brown (
R2
)
ISDN Extension 2
5
White (
R1
) – Gray (
T1
)
6
Red (
T2
) – Blue (
R2
)
ISDN Extension 3
7
Red (
R1
) – Orange (
T1
)
8
Red (
T2
) – Green (
R2
)
ISDN Extension 4
9
Red (
R1
) – Brown (
T1
)
10
Red (
T2
) – Gray (
R2
)
ISDN Extension 5
11
Black (
R1
) – Blue (
T1
)
12
Black (
T2
) – Orange (
R2
)
ISDN Extension 6
13
Black (
R1
) – Green (
T1
)
14
Black (
T2
) – Brown (
R2
)
ISDN Extension 7
15
Black (
R1
) – Gray (
T1
)
16
Yellow (
T2
) – Blue (
R2
)
ISDN Extension 8
Order of the 4 wires in the cable mentioned above matters, which are to be used for
connection to ISDN devices.
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.
Each of the ISDN extension circuits has two different phone numbers assigned to
telephones. Although one may think that the ISDN structure allows connection of 8
telephones, actually it is possible to attach at most two ISDN devices to each extension. By
this way, both devices can make calls simultaneously, as well as they have two different
phone numbers.
Содержание DS200
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