DETEWE OpenCom 510, User Manual

Page: 39 / 164

37
Interfaces and Connectible Terminals S
0
Ports
To connect the OpenCom 510 to the
NTBA, wire pins 3, 4, 5, 6 of the NTBA
and of the OpenCom 510 1:1.
To directly connect two
OpenCom 510 systems via the exter-
nal S
0
ports, connect the RJ45 sock-
ets of the systems by means of a
crossed twisted-pair cable. The dis-
tance between the two PBXs must
not exceed 1000 metres (see also
PBX Networking starting on
page 102).
Wiring for direct connection
Internal S
0
Ports
Up to eight ISDN terminals per bus
can be connected to the internal S
0
ports by means of four-wire cables.
Three of these terminals can be sup-
plied with power from the bus; any
additional terminals will require
their own power supply. The internal
S
0
buses can be used for point-to-
multipoint connections in accord-
ance with the DSS1 protocol (Euro
ISDN).
ISDN terminals can be connected to
internal S
0
ports by means of a
crossed ISDN cable. For the pin as-
signment of crossed ISDN cables, re-
fer to the illustration
Wiring for direct
connection on page 37. If the termi-
nal did not come with a suitable
ISDN cable, contact your dealer or
DeTeWe distributor.
The length of an internal S
0
bus ca-
ble must not exceed 150 m. Each in-
ternal S
0
bus has a power feed of ap-
prox. 3 W. The feed voltage is
–
42 V.
1 2 3 4 5 6 7 8
8 7 6 5 4 3 2 1
TK-Anlage 1, S
0
ext
TK-Anlage 2, S
0
ext
(RJ 45-Buchsen)