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 external S
0
ports, connect the RJ45 sockets of the systems by means of a crossed twisted-pair cable. The distance between the two PBXs must not exceed 1000 metres (see also
PBX Networking starting on page 102).
TK-Anlage 1, S
0
ext
1 2 3 4 5 6 7 8
ISDN terminals can be connected to internal S
0
ports by means of a crossed ISDN cable. For the pin assignment 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 cable must not exceed 150 m. Each internal S
0
bus has a power feed of approx. 3 W. The feed voltage is
–
42 V.
8 7 6 5 4 3 2 1
TK-Anlage 2, S
0
ext
(RJ 45-Buchsen)
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 supplied with power from the bus; any additional terminals will require their own power supply. The internal
S
0
buses can be used for point-tomultipoint connections in accordance with the DSS1 protocol (Euro
ISDN).
Interfaces and Connectible Terminals S
0
Ports
37
