9
3920-A2-GK41-60
February 2002
Data Terminal Equipment Connection
Use the following steps to connect an EIA-232-D cable from the modem to a DTE:
1. Make sure the modem is powered OFF.
2. Connect the DB-25-P (plug) connector on the cable to a DB-25-S (socket) connector (Figure 4) on the
modem’s back panel, labeled DTE 1 – DTE 4. Use a small screwdriver to secure the cable to the modem.
3. For each port, connect the DB-25-P connector on the cable to the DB-25-S connector on the DTE. Use a
small screwdriver to secure the cable to the DTE(s).
NOTE
DTE rates above 19.2 bps require cable lengths less than fifty feet
as specified by the RS232 standard.
Power Supply Connection
Use the following steps to connect the modem to an ac power outlet:
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 4).
3. Connect the power cord to the power supply.
4. Connect the power cord to a grounded ac power outlet.
Leased-Line Network Connection
Use the following steps to connect the leased-line network interface:
1. Insert the 8-position, 8-conductor modular plug into the jack labeled LEASED (Figure 4).
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.
