Alcatel OmniPCX Enterprise R7.1 Manuale di Installazione Scaricare il pdf (Pagina 57)

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.

Remark:

We recommend using an L120-series cable (or the L204 equivalent).

The distance T1-DLT or T2-DLT is limited by the amount of loss between the DLT and T1/T2,

which must not exceed 6 dB at 1024 kHz.

4.2.1.5.3 Analog public network

Without TL forwarding

With LR forwarding

In the event of a loss of tension or CPU malfunction, this solution allows forwarding of the

analog line, connected to the APA board's equipment 1, to an analog station.

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Alcatel OmniPCX Enterprise R7.1 Manuale di Installazione Pagina 57