35
Port Assignment, Termination, Cable Lengths
Installation
The S
0
bus is terminated by the TR at the ends.
Termination on an ISDN socket
S
0
Ports on Interface Cards
Switchable S
0
port on a pressure terminal
You can add further S
0
ports to the T-Comfort 930 DSL by installing suitable interface cards in a slot. These
S
0
ports can be switched between internal and external operation.
In contrast to the basic module, the expansion module does not provide any additional RJ45 jacks for external
S
0
ports. Therefore you can also use the pressure terminals of the expansion module for an external S
0
port.
The port assignment of the pressure terminals is changed when the switch is made from internal to external
operation. This can be seen in the diagram.
T-Comfort 930 DSL
IAE
TR
TR
IAE
1a
1b
2a
2b
TR
TR
S
0
int
2a 2b 1a 1b
1 2 3 4 5 6 7 8
S
0
ext
1a 1b 2a 2b
1 2 3 4 5 6 7 8
Содержание 930 DSL
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