ADTRAN E220/220, Installation & Maintenance

1

Section 61245001L7-5, Issue 1

61245.001L7-5A

Section 61245001L7-5

Issue 1, May  1998

CLEI Code #T1L2BUCBAA

E220/220  T1 HTU-C

HDSL Transceiver Unit -- Central Office

INSTALLATION/MAINTENANCE

PRACTICES

C A U T I O N ! 

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

1.

GENERAL

The ADTRAN E220/220 Low Voltage HDSL Transceiver
Unit for the Central Office (HTU-C), part number
1245001L7, is the Central Office (CO) unit used to
deploy an HDSL T1 circuit using four-wire metallic
facilities. The unit occupies one slot in a standard 220
Office Repeater Bay or the ADTRAN E220 Shelf.  Figure
1 is an illustration of the ADTRAN HTU-C.

DSX-1 signals are provided to and received from the
network while 2B1Q HDSL signals are provided to the
local loop.  The ADTRAN HTU-C works in conjunction
with the ADTRAN HTU-R and HRE to provide a DS1
service up to 24,000 feet on the local loop.

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

Figure 1.  ADTRAN HTU-C

R
S

2
3
2

LP1

LP2

DSX

ALM

LBK

TX

RX

E
Q

DSX-1

LBO

B8ZS

FRM

ESF

NIU LB DIS

LBK TIMEOUT DIS

AMI
UFRM
SF
EN
EN

HTU-C

1245001L7

133

0

EXT

266

399

533

CONTENTS

1.

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

2.

INSTALLATION ........................................................... 2

3.

CONNECTIONS .......................................................... 4

4.

HDSL SYSTEM TESTING .......................................... 5

5.

CONTROL PORT OPERATION ................................. 6

6.

HDSL DEPLOYMENT GUIDELINES ........................ 13

7.

TROUBLESHOOTING PROCEDURES ................... 13

8.

MAINTENANCE ........................................................ 14

9.

PRODUCT SPECIFICATIONS ................................. 14

10.

WARRANTY AND CUSTOMER SERVICE .............. 14

Appendix A.  HDSL LOOPBACKS .................................. A-1

FIGURES

Figure 1.

ADTRAN HTU-C .............................................. 1

Figure 2.

HTU-C Edge Connector Wiring ....................... 4

Figure 3.

HTU-C Span Powering Diagram ..................... 4

Figure 4.

HTU-C Bantam Jack Arrangement ................. 5

Figure 5.

HDSL Loopbacks ............................................. 5

Figure 6.

RS-232 (DB9) Pin Assignments ...................... 6

Figure 7.

Introductory Menu Screen ............................... 8

Figure 8.

HDSL Main Menu Screen ................................ 8

Figure 9.

Current System Status Screen ........................ 9

Figure 9A. Current System Status Screen - HRE ............. 9
Figure 10.

Performance History Screen ......................... 10

Figure 10A. Performance History Screen - HRE .............. 10
Figure 11.

Loopback Options Screen ............................. 11

Figure 12.

Self Test Options Screen .............................. 11

Figure 13.

Provisioning Screen ...................................... 12

Figure 14.

Troubleshooting Display ................................ 12

Figure 15.

HDSL Deployment Guidelines ...................... 13

TABLES

Table A.

Front Panel Rotary Switch Option Settings .... 2

Table B.

SW1 Option Settings ....................................... 3

Table C.

Front Panel Indicators ..................................... 3

Table D.

Screen Abbreviations ...................................... 6

Table E.

HDSL Loss Values ........................................ 13

Table F.

Loop Insertion Loss Data .............................. 13

Table G.

Troubleshooting Guide .................................. 14

Table H.

HDSL 220/E220 Low Voltage HTU-C
Specifications ................................................ 15

Table A-1. HDSL Enhanced Loopback Control

Codes .......................................................... A-1

Table A-2. Inband Addressable Loopback Codes ........ A-2