7
Connect analogue extensions ¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢
You may connect any analogue apparatus
to the system which has been approved for
connection to the public switched
telephone network.
a/b aparatus is:
- Telephone (2 wire Phone or POT) either
LD or MF Dialling with Timed Break
Recall (TBR) (60 – 800 ms)
- LD Phones may only have limited feature
access.
- Fax machines Group 3
- Telephone Answering Machines
- Modem 56k (V.90 to 56600 bps, may
reduce to 33600 bps due to quality of
lines V.34+)
Connect the analogue apparatus via 2
wires to the a and b wire (Speech Pair) of
the system port You must not connect the
Da and Db connections.
System telephones
Connect system telephones by four wires
to the Vario ports by connecting them to
the La and Lb wires (speech wires) and the
Da and Db wires (data wires; data for
signalling and displays)
Connection of wire
- Mark the lines with the marking system
included
- Strip the cable by 11 mm.
- Push the single wire all the way into the
connection block without pressing the
release catch.
- To disconnect a wire, press the release
catch with a small screwdriver while at
the same time pulling out the conductor
External S0 connection fixed (RJ45 socket) ¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢
Point-to-point connection
You may only connect one ISDN telephone
system to an ISDN point-to-point connec-
tion. You cannot connect any further ISDN
terminals.
Using the ISDN connecting cable, connect
the ISDN telephone system directly to the
NTBA or to an ISDN socket (IAE / UAE) that
is connected to the NTBA.
Terminators for the external S0 access
S0 0/1
For a point-to-point connection, the two
switches S1301/ab (on the component side
of the module) for the 100 Ohm terminators
must be closed.
Point-to-multipoint connection
The point-to-multipoint connection may
consist of an S0 bus. Up to 12 ISDN sockets
(IAE / UAE) may belong to this S0 bus. Be-
sides the ISDN telephone system, you can
connect up to 7 further ISDN terminals to
the S0 bus.
Terminators for the external S0 access
S0 0/1
For the point-to-multipoint connection, the
two switches S1301/ab for the 100 Ohm
terminators must be:
- closed if the external S0 access is
connected directly to the NTBA or to the
last IAE / UAE socket and the 100 Ohm
terminators in the socket are not con-
nected,
- open if the 100 Ohm terminators in the
last IAE / UAE socket are connected or
the telephone system is not the last
ISDN terminal on the point-to-multipoint
connection.
Use the ISDN connecting cable to
connect the ISDN telephone system to
an ISDN socket of the S0 bus.
If the point-to-multipoint connection does
not consist of an S0 bus, you can connect
the ISDN telephone system directly to the
NTBA.
