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HDSL4 3192 H4TU-C

1221404L1

DSX

ALM

DSL 1

DSL 2

LBK

ESF

/SF

B8ZS

/AMI

H   TUC

TX

RX

TX

RX

DSX MON

DSX EQ

HDSL4 3192

H4TU-C 

CLEI: T1L133X4_ _

LED STATUS

DSL1/DSL2 

Green

Loop 1/ Loop 2 synchronization achieved and signal is present.
No errors currently detected, and SNR margin 

6 dB.

Red

Loop 1/ Loop 2 synchronization not achieved, in sync with errors,
or SNR margin 

6 dB.

DSX 

Green

DSX-1 signal present and no errors currently detected.

Red

In framed mode, denotes loss of framing or loss of sync at the
DSX-1 input.  In unframed mode, denotes loss of signal DSX-1
input.

ALM

Off

No T1 alarms are active.

Red

Loss of DSX-1 signal from the network.

Yellow

Loss of DS1 signal from the CPE.

ESF/SF

Off

Unframed.

Yellow

ESF framing

Green

SF framing

B8ZS/AMI

Yellow

B8ZS line coding.

Green

AMI line coding.

LBK

Off

No local loopbacks active.

Yellow

Local loopback active.

DSX EQ SPLITTING JACKS

TX

DSX-1 transmit toward the local loop (intrusive)

RX

DSX-1 receive from the local loop (intrusive)

DSX MONITOR JACKS

TX

DSX-1 transmit toward the local loop (nonintrusive)

RX

DSX-1 receive from the local loop (nonintrusive) 

COMPLIANCE

This product is intended for installation in restricted access locations only and in equipment
with a Type “B” or “E” enclosure.

The DSX-1 interface is intended for connection to intra-building wiring only.

This product provides span powering voltage (negative only with respect to ground, -190 VDC 
nominal, GFI protection < 5 mA) and meets all requirements of Bellcore GR-1089-CORE (Class A2)
and ANSI T1.418 Issues 1 and 2.

■  

For a complete Installation and Maintenance Practice (P/N 61221404L4-5): (877) 457-5007, faxback 

D

ocument 795.  Please have your fax number ready.  

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.

ut

Code

Input Output

Installation Code (IC)

A

Telecommunication Code (TC)

X

Power Code (PC)

F

C

1
2
3
4
5
6
7
8
9

10

A
B

C
D

E

F

H

J

K

L

R1  RX DSX (Out to DSX)

R  TX DSX (In from DSX)

GND
R1 HDSL4 Loop 2

-48V
R  HDSL4 Loop 1

T  TX DSX (In from DSX)
T1  RX DSX (Out to DSX)

RCV LOS (to Alarm Module)

T1 HDSL4 Loop 2

Frame Ground
T HDSL4 Loop 1

Fuse Alarm (to Alarm Module)

H4TU-C EDGE CONNECTOR WIRING

JOB

A

ID

61221404L1-22A

020

6

#61221404L1-22A#

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