Connecting the PBX
The CIE server is connected with the I55 PBX using the ISDN S0 card.
Module in the PBX
The PBX must have a DS0 or DT0 module.
ISDN connection configuration
The following table shows the pinout of the ISDN S0 jack.
S0
jack
ISDN assignment
System
Pin
1
2
3
4
A
A
a2
a1
v
v
a
a
i
i
l
l
a
a
b
b
l
l
e
e
A
A
RX
TX
v
v
A
A
a
a
i
i
l
l
a
a
b
b
l
l
e
e
5
6
7
8
b1
b2
A
A
v
v
a
a
i
i
l
l
a
a
b
b
l
l
e
e
A
TX
RX
A
B
B
v
v
a
a
i
i
l
l
a
a
b
b
l
l
e
e
Edition: 1.1 03/08/2007
Connecting to I55
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