Interfaces and Terminals as of I7.8
14
System Interfaces
sy
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023
9/2.
4
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8
– 0
7
.2009
Point-to-Multipoint Connection with PBX
If a PBX is connected using point-to-multipoint, a direct dial number must be cre-
ated for each MSN number, with all the digits of the MSN number.
NT1:
Network Terminal
MSN: Multiple Subscriber Number
U/T:
ISDN reference point
AD2:
digital terminal interface AD2
a/b:
analogue terminal interface
Fig. 4
Basic access in point-to-multipoint configuration, with single-digit direct dial and parallel ter-
minal
Combinations are also possible in the case of several lines, e.g. one line in point-to-
multipoint configuration and the remaining in point-to-point configuration.
Note:
If terminals (e. g. MSN1) are connected in parallel on the T interface,
Colli-
sion Detection
has to be activated as the PBX and the terminal influence
each another. This also applies in cases where a/b connections are used
on NT1.
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