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.