Installation Instructions

Installation of the telephone system
20
On the expansion module one below the other you will find for each port three long
(20 pin) multi-pin connectors. One of those multi-pin connectors (depending on the
shipment) is connected with a jumper.
Install this jumper on the lowest multi-pin connector (to the RJ-45 connectors) if you
wish to set the port to S
0
external, i.e. for connecting it to an NTBA of an ISDN con-
nection.
Install this jumper on the middle multi-pin connector if you wish to set this port to S
0
internal, i.e. for connection of ISDN or S
0
system telephones.
Install this jumper on the upper multi-pin connector if you wish to set this port to Up
0
internal, i.e. for connection of Up
0
system telephones.
Above these multi-pin connectors you will find for each port a small (4 pin) multi-pin
connector. In case these pins have jumpers as shown above the termination resistor
within the telephone system is installed. Remove these jumpers if you wish to remove
the termination resistor.
If you wish to connect installation cables to an internal S
0
port into two different direc-
tions in parallel you will have to remove the internal termination resistors. A more de-
tailed explanation please find in chapter "Connection of ISDN or system telephones"
in this Manual.
Operating the telephone system at an ISDN (NTBA)
connection
Connect the NTBAs of your ISDN connections to the S
0
ports of your telephone sys-
tem which were set to external. Please use an ISDN cable or - as a substitute - a net-
work cable. An ISDN cable came along with your telephone system.
tiptel.com 822 XT Rack and tiptel.comPact 84 Up 4 each provide you with two jacks
per S
0
port. It does not matter which of the two jacks is being used for connecting the
NTBA. The second jack, however, must not be used.