Power Supply Connection; Leased-Line Connection; Dial Connection; Leased Backup Connection - Paradyne COMSPHERE 3920PLUS Installation And Operation Manual

Power Supply Connection

Use the following steps to connect the modem to an ac power outlet:

Leased-Line Connection

Use the following steps to connect the leased-line network interface:

Dial Connection

The telephone company provides the line termination jacks for the permissive service you request.
Advance coordination with the telephone company is suggested when connecting the modem to
telephone dial lines (PSTN).
In the Permissive mode, the modem's transmit output level is fixed at –9 dBm. The telephone
company assumes that the line loss is 3 dB and no compensation is provided for additional losses.
A Permissive mode telephone line is usually terminated with a USOC RJ11C jack.

Leased Backup Connection

Use the following steps to connect the modem to the 2-wire leased backup network interface:

Dial Backup Connection

Use the following steps to connect the modem to the dial network interface:
3920-A2-GN31-30
1. Make sure the modem is powered OFF.
2. Insert the power supply's 8-pin DIN connector into the modem's back panel dc power
receptacle, labeled PWR (Figure 2-1).
3. Connect the power cord to the power supply.
4. Connect the power cord to a grounded ac power outlet.
1. Insert the 8-position, 8-conductor modular plug into the jack labeled LEASED
(Figure 2-1).
2. Insert the other end of the modular cord into the leased-line network interface.
3. If the Model 3920Plus has a backup line, follow the steps listed in the Dial Backup
Connection section.
1. Insert the 8-position, 8-conductor modular plug into the jack labeled DIAL (Figure 2-1).
2. Insert the other end of the modular cord into the leased-line network interface.
1. Insert the 6-position, 4-conductor modular plug into the jack labeled DIAL (Figure 2-1).
2. Insert the other end of the modular cord into the dial network interface.
November 1996
Modem Installation
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