ADTRAN 1181001L1, Installation And Maintenance Practice

Data Connections

61181001L1-5E

19

Connecting the High-Speed Metallic Interface

In addition to the individual DSX inputs from the network available via the Loop connectors 
on the backplane, when the Total Access 3000 is employing a multiplexer module in either 
slots 

A

 or 

B

 (or both), the shelf has the ability to take its TDM or ATM input from the multi-

plexer. For the metallic high speed interfaces DS3 (ATM or TDM) and STS-1, the input from 
the network is via coaxial cable through a special coaxial adapter mounted to the lower right 
corner of backplane labeled 

J34

.

The Total Access 3000 Chassis becomes a multiplexer shelf, with the ability to direct any DSX 
in the DS3 or STS-1 payload to any slot in the shelf for whatever service is being provided to 
the customer. The Total Access Cell Switch Module (CSM) can interface with the ATM network 
via a DS3 connection also utilizing coax cable.

Installing the High-Speed Connector Module

The high-speed metallic interface is a special coaxial adapter mounted to the lower right hand 
corner of the backplane. It is a separate part not required for individual DSX-1/E1 network 
inputs. To install the high-speed metallic interface to the Total Access 3000 Chassis, perform 
the following steps:

1. Carefully line up the two guide pins on the adapter with the holes on the ends of the 24-

pin female connector on the backplane. Lining up these pins and holes will align the screw 
holes in the adapter module with the threaded press fittings in the backplane.

NOTE

The 24 pins on the underside of the adapter module must line up
with the 24-pin female connector on the backplane. Do not force
the adapter into place.

2. Carefully press the adapter into place on the backplane socket.
3. Using a #1 phillips-head screwdriver, secure the adapter to the backplane with the two 

screws provided.

Connecting High-Speed Cabling

After attaching the high-speed metallic interface to the backplane, data cabling must be 
installed from the network to route the high speed signal to the Total Access 3000 chassis. To 
connect the high-speed cabling to the high-speed metallic interface, perform the following 
steps:

1. Determine which cable from the network is for transmitting and which is for receiving.
2. Attach the network transmit cable to the Total Access 3000 upper BNC connector, labeled 

RX

. The fitting is a standard BNC connector. Align the outer ring of the cable connector 

with the keys on the chassis connector barrel, press the cable in, and turn approximately 
1/3 turn clockwise to the locking point.

3. Attach the network receive cable to the Total Access 3000 Chassis lower BNC connector, 

Labeled 

TX

. The fitting is a standard BNC connector. Align the outer ring of the cable 

connector with the keys on the chassis connector barrel, press the cable in, and turn 
approximately 1/3 turn clockwise to the locking point.