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220/DDM+/3192 H2TU-C

Option Settings Display (“VIEW”)

Message

Description

Settings

Default

LBO

Line Build Out

EXT, 0, 133, 266, 399, 533

*

CODE

Line Code

AMI, B8ZS

B8ZS

FRMG

DSX-1 Framing

AUTO, UNF

UNF

NLBK

NIU Loopback

EN, DIS

EN

LBTO

Loopback Timeout

NONE, 1 Hr, 2 Hr, 8 Hr, 24 Hr

1 Hr

CLOS

Customer Loss Response

AIS, LPBK

AIS

PRM

Performance Reporting Messages

NPRM, SPRM, NONE, AUTO

AUTO

TXLV

DS1 Transmit Level

0 dB, -7.5 dB, -15 dB

0 dB

SPWR

Span Power

EN, DIS

EN

ALMP

Alarm Pattern to Customer

AIS, LOS

AIS

* 220 = EXT, 3192/DDM+ = 0

Loopback Options Display (“LPBK”)

Select

Loopback State

Loopback Description

HTUC

NET

Network loopback at H2TU-C

CST

Customer loopback at H2TU-C      

NONE

No active loopback

HTUR

BLB

Bidirectional loopback at H2TU-R

NET

Network loopback at H2TU-R

CST

Customer loopback at H2TU-R 

NONE

No active loopback

DSX-1 BANTAM JACKS

EQ

Provides an intrusive access point to the data stream.
TX - Access the data stream being received from the network.
RX - Access the data stream being transmitted to the network.

MON

Provides a non-intrusive access point to the data stream.
TX - Monitors the data stream being received from the network
RX - Monitors the data stream being transmitted to the network.

NOTE:

The DDM+ H2TU-C does not have the DSX-1 Bantam Jacks option.

RS-232 DB-9 CONNECTOR

Used to access performance monitoring data, perform loopbacks and provision units via VT100 
emulation applications such as Hyper Terminal – Private Edition, ProComm Plus, and Telnet.

There are two types of terminal emulation modes, Manual and Real-Time.  Use “CTRL-T” to toggle
between the two modes.  

Manual Emulation Mode

:

Press the space bar 3 times to manually update the screen.  Print screen

and log file commands are available in this mode.

Real-Time Emulation Mode

:

The default mode.  Print screen and log file commands are not 

available in this mode.  Cursor placement and screen highlighting are enabled.

Provision terminal port as follows:

Data Rate

— 1.2 to 19.2 kbps

Asynchronous Data Format

— eight data bits, no parity (none), one stop bit

When using a PC with terminal software, be sure to disable any power saving programs.

PROVISIONING NOTES

This unit can be provisioned via the RS-232 port or remotely via ITS codes.  This unit cannot be 
provisioned from the faceplate four-character display.  Select “2” from the ADTRAN HDSL2 Main
Menu Screen to view the Provisioning Screen.

STATUS LED

STATUS

GREEN

Everything functioning normally

BLINKING ES, SES, or BPV detected

YELLOW

Loopbacks active

BLINKING In-band loopbacks armed

RED

Alarm on the HDSL2 loop, DSX or DS1 interface

BLINKING Signal Quality of 0 or No Sync on the HDSL2 loop

FOUR-CHARACTER DISPLAY (FCD) OPERATION

FCD Modes

Mode

Message

Function

Status

STAT

Displays loop margin, alarms, and general status conditions

Display Off

Blank

Blank after five minutes of no activity

View

VIEW

View current options settings

Loopback

LPBK

Select and execute HDSL2 circuit loopbacks

Status/Alarm Display (“STAT”)

Message

Description

MARG xx

HDSL2 loop margin, 0-20

DSL ERR

CRC error detected on HDSL2 Loop

LOC ERR

Frame bit error (SF Mode), Bipolar Violation (BPV), or CRC error (ESF Mode)
detected locally at DSX-1 of the H2TU-C

REM ERR

Frame bit error (SF Mode), Bipolar Violation (BPV), or CRC error (ESF Mode)
detected remotely at DS1 of the H2TU-R

DSL LOS

No synchronization of H2TU-C and H2TU-R on loop

LOC LOS

DSX signal is absent from the network interface or is of a format which does
not match the provisioning of the HDSL2 circuit

REM LOS

DS1 signal is absent from the network interface or is of a format which does
not match the provisioning of the HDSL2 circuit

ARM

NIU Loopback is armed

Left = MODE

Center = OFF

Right = SELECT

1221001L6

STATUS

D
S
L

dB

SEL

MODE

R

S

2

3

2

E

Q

HIS

TX

RX

M

O

N

TX

D
S
X

RX

C A U T I O N 

C A U T I O N ! 

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

COMPLIANCE CODES

This product is intended for installation in restricted access locations only and in equip-
ment with a Type “B” or “E” installation code.

Input current at maximum load is 0.7 A at
–48 Vdc.  Maximum output at over current
condition is 165 mA at –190 Vdc.

WARRANTY

Warranty for Carrier Networks products manufactured by ADTRAN and supplied under
Buyer’s order for use in the U.S. is ten (10) years.  For a complete copy of ADTRAN’s U.S.
Carrier Networks Equipment Warranty: (877) 457-5007, Document #414.

CODE

IN

OUT

Installation Code (IC)

A

Telecommunication Code (TC)

X

Power Code (PC)

F

C

Reference Guide

61221001L6A-30B

0011

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