System interfaces
26
System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
Point-to-Point Connection with Direct Dial
With direct dial the individual communication server users can be reached directly
via their direct dial number.
NT1: Network Terminal
DDI: Direct dialling
U/T: ISDN reference point
DSI: Digital terminal interface DSI
BRI-S: ISDN terminal interface
FXS: Analogue terminal interface
Fig. 6 Several basic accesses in point-to-point configuration, with direct dial number
Note:
Do not connect any terminals between the NT1 and the communication
server.
Periodic Reactivation of Layer 2 on the BRI-T-Interface
1)
Layer 2 of the BRI-T network interface can be reactivated periodically every three
minutes so that incoming calls are not rejected already at the local exchange after
potential temporary interruptions in the U-interface. To do so, configure the pa-
rameter L2 activation of the BRI-T network interface to special.
Note:
In some countries BRI-T network interfaces are deactivated once a certain
amount of time has elapsed without traffic, and are only reactivated
when the communication server once again requests a connection.
1)
Only in Germany and Austria.
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