Zhone Technologies Z-PLEX-10-24-DOC-SC Manuel D’Utilisation

Zhone Technologies

Model No.

Running Head

Loopbacks

Setting and viewing the transmit and receive ABCD signaling bits

Setting the tip and ring leads

Reading the tip and ring statistics

The FXO/FXS ports support analog and digital loopbacks:

During an analog loopback, the decoded analog signal is sent back to the far end after 
decoding and then re-encoding it. 

During a digital loopback, the incoming digital DS0 signal is sent back to the far end 
without decoding it. 

In the case of unassigned channels, the loopback interface provides an idle termination. Figure 
5-3 illustrates FXO/FXS loopbacks.