System interfaces
27
System functions and features as of R4.1
syd-0570/1.2 – R4.1 – 08.2016
Point-to-Multipoint Connection with communication server
If a communication server is connected using point-to-multipoint, a direct dial number
must be created for each MSN number, with all the digits of the MSN number.
NT1: Network Terminal
MSN: Multiple Subscriber Number
U/T: ISDN reference point
DSI: Digital user-network interfaces
FXS: Analogue terminal interface
Fig. 4 Basic rate interface in point-to-multipoint configuration, with single-digit direct dial and par-
allel terminal
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 BRI-T interface, “ Collision detec-
tion” has to be activated as the communication server and the terminal influence each other.
This also applies in cases where analogue connections are used on NT1.
MSN 2 -> 34
MSN 3 -> 45
MSN 1
MSN 1: 653 12 33
MSN 2: 653 12 34
MSN 3: 653 13 45
FXS
34
45
DSIU
NT1
Fax
BRI-T
Communica-
tion server
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