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Switchable S0 access S0 0/2(internal or external S0 access) ¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢
External S0 access S0 0/2
You can connect the external S0 access to a
point-to-point or a point-to-multipoint con-
nection. You will find notes under the head-
ing of "External S0 access (Western
socket)".
Connect the four single wires of the in-
cluded ISDN cable (Western plug - single
wires) to the S0 terminals of the module.
- Push the individual wires into the terminal
until they move no further,
without
pressing the terminal spring.
Terminal a1 - green wire
b1 - brown
a2 - yellow
b2 - white
- To separate a connection, use a suitable
tool (screwdriver with narrow blade) to
press down the terminal spring and pull
out the wire.
- Guide the cable through the cable comb
element.
- Switching over to external S0 access
On the module, set all switches of the DIP
switch S 1300 to "OFF" (all sliders to the
left).
Termination for external S0 access
Point-to-point connection
-
The two
switches S1301/cd for the 100 Ohm termi-
nators must be closed ("as-delivered" set-
ting).
Point-to-multipoint connection
- For the
point-to-multipoint connection, the two
switches S1301/cd for the 100 Ohm termi-
nators must be:
-
closed
if the external S0 access is con-
nected directly to the NTBA or to the last
IAE / UAE socket and the 100 Ohm termi-
nators in the socket are not connected,
-
open
if the 100 Ohm terminators in the
last IAE / UAE socket are connected or the
telephone system is not the last ISDN ter-
minal on the point-to-multipoint connec-
tion.
The switches S130 1/cd are on the compo-
nent side of the module.
Do not insert the Western plug of the con-
necting cable into your ISDN connection
socket until all installation work has been
completed.
Internal S0 access S0 0/2
AYou may connect up to eight ISDN termi-
nals to one internal S0 access of the tel-
ephone system.
ISDN terminals:
- AGFEO system telephones digital
- ISDN telephones
- ISDN cards
- ISDN fax machines
Depending on current consumption, you
may connect at least four ISDN terminals
that do not have a power supply of their
own.
Example: 4 ISDN telephones or 2 system
telephones digital and 2 ISDN telephones.
The ISDN terminals must operate in accord-
ance with the DSS1 protocol.
You need the following material to install an
internal S0 access:
- Telecommunications cable; we recom-
mend the cable type I-Y (St) Y 2 x 2 x 0.6
long
- IAE or UAE connection sockets; up to 12
sockets
- Terminators, 100 Ohm, load carrying ca-
pacity 0.25 watt, 2 terminators
An internal S0 access may be 130 m long
(distance from the telephone to the last IAE/
UAE socket)
