ONE300 – Installation Manual
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4.5
ISDN PRI Interface (PRI)
This interface provides an E1/T2 digital voice access - G.703/G.704.
The external connection of the E1/T2 interface is made on the rear panel by RJ45
connector.
4.5.1
Safety Level of PRI Interface
The interface marked PRI offers an ISDN primary access (RJ45 connector). This
interface is TNV-1.
For internal applications this interface must be connected to an S2/E1/T1 interface
of TNV-1 type.
4.5.2 Connector
Pinout
The connection to the access voice interface is located on the rear panel with the
RJ45 connector. The connector pinout is as follows:
Pin
Signal
Pin
Signal
1
RX (+)
5
TX (-)
2 RX
(-)
6 NC
3 NC
7 NC
4 TX
(+)
8 NC
4.5.3 Cables
The cable used for the access is a shielded cable, which contains 2 twisted pairs
with twisted pairs for the transmission (4-5) and receive (1-2) pairs.
