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2.4.2
"Point-to-point"
This type of connection allows a distance of up to 1000 m between one ISDN
terminal and the PABX. This setting is made during programming. The termi-
nating resistors must be installed in the ISDN jack. The wire diameter for the
example used here is 0.6 mm.
Fig. 21: "Point-to-point" connection
2.4.3
Connecting the ISDN terminals to the internal ISDN
connection
Figure 22 shows the interfacing to RJ 45 jacks. ´The interfacing RJ 45- 8 jacks
and the designations used for these. The terminating resistors to RJ 45 jacks
shown in Figure 23. The "point-to-point" connection corresponds to the bus
interface (RJ 45) but with only one ISDN jack having terminating resistors. Figure
24 illustrates the connection assignment for RJ 45 4...8 jacks.
PAB X
m ax. 1,000 m
ISDN jac k w ith
1
2
3
4
5
6
7
8
term inating
resistors
ISDN telep hone
32
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