36
Installation
Port Assignment, Termination, Cable Lengths
t
Let us say you have activated an IAE on an internal S
0
port, for example. If you switch
this S
0
port to external operation, you require a crossed ISDN line to connect the IAE to
an NTBA. The assignment of a crossed line is described in the chapter
PBX Networ-
king
under
Direct Connection
starting on page 84.
U
pn
Ports
Each of the U
pn
ports enable the connection of a T-Comfort 730 DECT base station, a T-Comfort 630/730/
830 system telephone, or a Comfort Pro P 100/300/500 system telephone using a twin-wire cable.
The maximum permissible length of the twin-wire cable on a U
pn
port is 500 m. This line may only be laid
inside buildings.
The maximum permissible length of the twin-wire cable on a U
pn
port of an interface card is 1,000 m when
0.6 mm cable (with twisted pairs) is used.
The power consumption of each U
pn
port is approx. 3 W.
Pin assignment of the S
0
and U
pn
ports
a/b Ports
The a/b ports are for operating analogue devices (e.g. a fax machine, modem or telephone). The maximum
permissible length of the cable is 1,000 m when twin-wire 0.6 mm cable (with twisted pairs) is used.
S
0
int
RFP with 2 U
pn
U
pn
/RFP with 1 U
pn
2a 2b 1a 1b
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Summary of Contents for 930 DSL
Page 1: ...T Comfort 930 DSL Mounting and Commissioning...
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Page 152: ...As of 01 09 2006 Deutsche Telekom AG T Com Bereich Endger te Postfach 20 00 53105 Bonn...
