ADTRAN Type 400 User Manual

Type 400 Single Mount Housing

C A U T I O N !

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

For Loop Powered Network Termination Units

Installation and Maintenance

CONTENTS

1. GENERAL..........................................................1

2. INSTALLATION ............................................... 1

3. CONNECTIONS ................................................ 2

4. MAINTENANCE...............................................3

5. WARRANTY AND CUSTOMER SERVICE... 3

FIGURES

Figure 1. T400 LP Housing ......................................1

Figure 2. T400 LP Housing with Cover Open .........2

Figure 3. T400 LP Housing Rear Panel....................2

TABLES

Table 1. Cable Pairs ................................................ 2

Table 2. Barrier Strip Interface Connection to Card

Edge Connector ......................................... 2

1. GENERAL

This section provides installation and maintenance
information for the ADTRAN
Single Mount Housing, illustrated in Figure 1.

®

Type 400 (T400)

Section 61212007L1-5B

Issue 2, May 2001

CLEI Code # NCM5MPSD_ _

Figure 1. T400 LP Housing

• Span Powered

• Network connection via terminal barrier strip

• Customer connects to RJ-48 or barrier strip

• Durable metal enclosure

2. INSTALLATION

Description

The ADTRAN T400 housing is used with a Loop
Powered (LP) Type 400 network termination unit and
is located at the customers premises. Functioning as a
point-of-demarcation, the combination housing and
circuit pack provide diagnostic and provisioning
information useful in installation and trouble isolation
procedures.

Connections are made to the unit by a screw terminal
block and an RJ-48 jack.

Document Revision History

This document has been revised to include additional
grounding information.

Features

The ADTRAN T400 LP Housing, P/N 1212007L1,
features include:

• Standalone Type-400 housing

61212007L1-5B

After unpacking the unit, inspect it for damage. If
damage is discovered, file a claim with the carrier and
then contact ADTRAN. See Warranty and Customer
Service.

The ADTRAN T400 LP housing may be mounted
using the mounting holes shown in Figure 2.

Open the cover and insert the circuit card through the
front of the housing until it snaps into the card edge
connector (J1), shown in Figure 2. After making the
interface connections and lowering and securing the
cover, the unit is ready for normal operation. Some
circuit cards may require a frame ground connection
to pin 11 or 27 of the gold finger connector. A ground
lug (L1), as illustrated in Figure 2, is provided to
connect an external frame ground wire to the unit.

Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.

Section 61212007L1-5, Issue 2

1

81

P1

DRR

DRT

DTT

DTR

TR

TT

RR

RT

Modular Connector

RJ-48

8 7 2 1

3. CONNECTIONS

The barrier strip provides screw-down terminals for
network and customer signal interfaces. Customer­side connections are usually made through the RJ-48
connector which is prewired to the barrier strip. To
connect to the barrier strip, conductors should be
placed beneath the square washer of each screw
terminal and tightened. Table 1 provides cable pair
connections and descriptions.

Terminal

Barrier

Strip

P1

J1

Card Edge

Connector

Mounting

Holes

Frame

Ground

Lug

L1

Figure 2. T400 LP Housing with Cover Open

The ground lug provides an external Frame Ground
connection for pins 11 and 27 of the plugin’s gold
finger card edge. Insert the grounding wire into the
housing through the Network portal of the rear panel,
as illustrated in Figure 3.

The T400 LP housing is compatible with other loop­powered T400 units. Table 2 describes the terminal
barrier strip and circuit card gold finger connector
interface signal assignments.

Table 1. Cable Pairs

Pair* Description

RT, RR
TT , TR
DRT, DRR
DTT, DTR

From Network
To Network
To Customer
From Customer

* The conductors of each pair are not polarity sensitive.

Table 2. Barrier Strip Interface Connection to

Card Edge Connector

Terminal Barrier

Strip (P1)

DRT
RT
RR
DRR
TT
TR
DTR
DTT

Circuit Card Gold Finger

Connector

5
7
13
15
41
47
49
55

NETWORK

Figure 3. T400 LP Housing Rear Panel

2

CUSTOMER

Section 61212007L1-5, Issue 2

61212007L1-5B