3200 Series Standalone and 3200 Series 1+1 System Installation Guide
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2.4.3.1
SCSI Interface (T1/E1) for the 3200-TE
A 3200-TE and SCSI patch panel enables the connection to T1/E1 lines. The termination impedance is
set at 120 ohms. It is possible to connect an external balun in order to convert to 75 ohms.
Note
All ports may not be active. T1/E1 ports are activated by software license; the number of
active ports depends on the licenses purchased.
Patch panels use straight connections. In other words, they do not cross the RX and TX
signals. Connections between the patch panels and the 3200 series gateway require
straight cables. The supplied SCSI cables are straight cables. Cables used to connect
the network to the patch panel must do the cross connection.
To connect the 3200-TE to the PSTN:
1.
Start with SCSI ports 0-15 located at the bottom right as shown in
one SCSI cable between this port and SCSI patch panel number 1, ports 0-15. Connect SCSI ports
16-31 to patch panel number 1, ports 16-31.
2.
Repeat step 1, using lines 32-63 and a second patch panel. Connect lines 32-47 to patch panel 2,
ports 0-15. Connect lines 48-63 to patch panel 2, ports 16-31.