External Isdn Ports (S External) - DETEWE OpenCom 510 User Manual

OpenCom 510
MX+S01-8: Terminating resistors acti-
vated
One end of the S
by the OpenCom 510; the terminat-
ing resistors must be activated (DIP
switches set to "on").
IAE = ISDN socket (German: "ISDN
Anschluß Einheit") or ISDN terminal.
TR = Terminating Resistor, the S
termination. The TR must be at the
termination of the line. This can also
be done by an appropriately wired
IAE.
1a
1b
2a
2b
Termination on an ISDN socket
The illustration Termination on an
ISDN socket shows an IAE with inte-
grated terminating resistors.
Bus Configuration: OpenCom 510
in in the Middle of an S
If a OpenCom 510 is connected in
the middle of an S
36
S Ports
0
IAE IAE
bus is terminated
0
TR
TR
Bus
0
bus, the termi-
0
nating resistors of the relevant S
terface cards must be deactivated.
1. Remove the interface card by
following the instructions in In-
stalling Interface Cards starting
on page 25.
TR
2. The DIP switches are protected
by a plastic foil. Use a pointed
tool such as a screwdriver to
slide the DIP switches down (see
arrow in the illustration
MX+S01-8: Terminating resistors
deactivated).
OpenCom 510
0
TR
MX+S01-8: Terminating resistors de-
activated
Both ends of the S
nated by terminating resistors; the
terminating resistors must be deac-
tivated (DIP switches set to "1 2").
External ISDN Ports
(S External)
0
You can connect the OpenCom 510
to the NTBA or to a second
OpenCom 510 for PBX cascading.
Interfaces and Connectible Terminals
IAE
IAE
bus are termi-
0
in-
0
TR