ZB
ZA
1
3
5
2
4
6
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
ANALOG INTERFACES
SLI16-2
ZB (5)
ZA (4)
Distribution panel
or
4.2.5 Connection to the Public Network
4.2.5.1 Digital Public Network via T0 Access (or DLT0 Private Network)
The OXO Connect system can be installed near the digital network termination or at a certain distance
(up to 350 m), as required.
4.2.5.1.1 Connection without T0/S0 Forwarding
Distribution panel
DNT
Transmission
Reception
TX
RX
ISDN ACCESS - T0
1 2 3 4 5 6 7 8
BRA8-2
Caution:
In T0 Point-to-Point installations, the OXO Connect system MUST BE the terminating element of the bus
and any other terminating resistor MUST BE removed.
4.2.5.2 Digital Public Network by T1 or T2 Access
The diagram below shows a PRA-T2 board, but is equally applicable for a PRA-T1 board.
TX
RX
ISDN ACCESS - E1
PBXNETW
PRA-T2
BUSY RAI AIS
NOS CRC LOS
Distribution panel
DLT
Transmission
Reception
The PRA board is connected to a digital line termination (DLT) by 2 symmetrical twisted pairs.
Cable impedance: 120 Ohms +/- 20% between 200kHz and 1MHz; 120 Ohms +/- 10% at 1 MHz.
Chapter
4
Installation and Cabling
3EH21123USAA - Ed. 01 - April 2017 - Installation Manual 52/207
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