Paradyne COMSPHERE 3821Plus Installation Instructions page 2

Install the Circuit Cards
The 6-port interface assembly serves two circuit cards
in adjoining slots.
1. Slide the 3821Plus card into its slot in the
3000 Series Carrier. Press firmly until the back
edge of the card seats in the socket of the DTE
interface assembly.
2. Lower the circuit pack lock until it is vertical,
locking the 3821Plus card in place.
Front Panel
3. Insert the second card, following steps 1 and 2.
4. When both cards are installed and locked in place,
tighten the screws on the DTE interface assembly.
The illustration on page 1 shows the DTE interface
assembly installation for 3821Plus cards in slots 15 and
16 of the carrier.
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495-14800
November 1996
Connect the DTE
You can use two different kinds of cables to connect
each 3821Plus modem to a DTE:
An RS-232 cable with DB25 connectors, or
An 8-pin modular cable with a DB25 to 8-position
modular adapter for each end
The connectors on the DTE interface assembly are
labeled, from top to bottom, A, B, and C. These markings
show which modem on a card is associated with each
DTE connector.
1. Connect the DB25 adapter or the connector on an
RS-232 DTE cable to one of the DB25 connectors
on the DTE interface assembly. Use a small
screwdriver to fasten the connector to the interface
assembly.
2. Connect the DB25 adapter or connector on the
cable to the DB25 connector on the DTE. Use a
small flat-blade screwdriver to fasten the cable to
the DTE.
3821-A2-GZ40-10