
Interfaces and Terminals as of I7.8
System Interfaces
15
sy
d-
023
9/2.
4
– I7.
8
– 0
7
.2009
Point-to-Point Connection without Direct Dial
Without direct dialling in, only one call number is available. The individual PBX us-
ers can only be reached indirectly via the number.
This variant is suitable above all for systems with primarily outgoing traffic.
NT1:
Network Terminal
U/T:
ISDN reference point
AD2:
digital terminal interface AD2
S:
terminal interface S
a/b:
analogue terminal interface
Fig. 5
Several basic accesses with line group in point-to-point configuration, without direct dial
number
Note:
Do not connect any terminals between the NT1 and the PBX.
MJOFHSPVQ
6
6
6
5
5
5
"%
4
BC
1#9
/5
/5
/5