Interfaces and Connectible Terminals
108
Forum 550 Card 8 S0/T0: Terminating resistors deactivated
Both ends of the S
0
bus are terminated by terminating resistors; the
terminating resistors must be deactivated (DIP switches set to “1 2”).
External ISDN Ports (S
0
External)
You can connect a Forum Gateway 560 to the NTBA or to a second PBX
system for PBX networking (see also
To connect the Forum Gateway 560 to the NTBA, wire pins 3, 4, 5, 6 of the
NTBA and of the Forum 5004/5008/5012 1:1.
In order to establish a direct connection between a Forum Gateway 560 and
another TC system via the external S
0
ports use the RJ45 sockets of the
devices and connect them by means of a crossed twisted-pair cable. The
distance between the two devices must not exceed 1000 metres.
Wiring for direct connection
1
2
ON
IAE
TR
TR
IAE
Forum 550
1 2 3 4 5 6 7 8
8 7 6 5 4 3 2 1
PBX 1, S
0
ext
PBX 2, S
0
ext
(RJ-45 socket)
Содержание Forum 500 Series
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