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  9. Paradyne COMSPHERE 3821PLUS User manual

Paradyne COMSPHERE 3821PLUS User manual

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TM
13821-A2-GZ40-10 November 1996
COMSPHERE 3821
Plus
6-Port DTE Interface Assembly
(Feature 3821-F1-002)
Installation Instructions
Document Number 3821-A2-GZ40-10
November 1996
6-Port DTE Interface
Assembly Installation
The following instructions are intended for use in
conjunction with the COMSPHERE 3821Plus Modem
User’s Guide (3821-A2-GB20). Please read the Important
Safety Instructions in that document before proceeding
with the installation.
Install the NIM
The DTE interface assembly covers the network
interface module (NIM), so the NIM must be installed
first. The 3821Plus modem requires one of the following
NIMs:
•Part number 3000-F1-027 (3821Plus NIM with
Make Busy and Service Line Features), or
•Part number 3000-F1-028 (3821Plus NIM without
Make Busy and Service Line Features)
Install the NIM and connect its cables according to the
instructions in the user’s guide. Communications adapters
designed or configured for a 4-wire leased line, Digital
Data Service, or programmable PSTN interface cannot be
used with a 3821Plus NIM, and should not be installed in
the same side of the carrier.
Loosely Attach the DTE Interface Assembly
The 6-port DTE interface assembly can be mounted
over any two adjacent slots on the left or the right side of
the carrier. If you are installing only one NIM for
3821Plus modems, the DTE interface assembly must be
mounted on the same side of the carrier as the NIM.
1. Feed the tabs at the bottom of the DTE interface
assembly into the slots in the carrier. See the
illustration below.
2. Insert the screws provided. After tightening them,
loosen them one turn. You will tighten them in a
later step.
496-14876
3000 SERIES
CARRIER
SLOTS
TABS
DTE INTERFACE
ASSEMBLY
AA
BB
CC
2November 1996 3821-A2-GZ40-10
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
495-1480
0
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.
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.