ADTRAN H2TU-R User Manual

C A U T I O N

*61181126L2-22A*

Total Access 3000/3010

H2TU-R

61181126L2-22A

0702

Total Access 3000/3010

H2TU-R

P/N: 1181126L2

CLEI: SIIA410F_ _

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

INTRODUCTION

The ADTRAN Total Access® 3000/3010 HDSL2 Transceiver Unit for the Remote End (H2TU-R, P/N 1181126L2) is a network terminating device that can deploy an HDSL2 T1 circuit using 2-wire metallic facilities. The H2TU-R fits any single-slot shelf in the Total Access 3000/3010 chassis (P/N 1181001L1 / P/N 1182003L1). The H2TU-R can be deployed in circuits that use one HDSL2 Transceiver Unit for the Central Office (H2TU-C) and one H2R.

INSTALLATION

After unpacking the unit, inspect it for damage. If damage is noted, file a claim with the carrier and then contact ADTRAN. Refer to the warranty for more information.

Mount the H2TU-R in any single slot of the Total Access 3000/3010 chassis. Amphenol connectors on the backplane of the Total Access 3000/3010 shelf allow access to the DS1 and HDSL2 signals. Pins 1 and 33 of each amphenol connector correspond to slot 1. Pins 2 and 34 of these connectors correspond to slot 2. Pins 3 and 35 correspond to slot 3, and so forth, up to pins 28 and 60 for slot 28.

♦ DS1 (Customer side) – Pair 7 and Pair 8

♦ HDSL2 (Network side) – Pair 2

Front Panel LEDs

Label Status Description

DSL

DS1

ALM

ESF/ SF

B8ZS

LBK

{

Off

Red

Yellow

Green

Green Flashing

{

Off

Green Flashing

Green

{

Off

Red

Yellow

{

Off

Yellow

Green

{zOff

Green

{

Off

Yellow

Yellow Flashing

No synchronization between the H2TU-C and the H2TU-R on the loop

Poor signal quality on the loop (> 10-7 BER)

Marginal signal quality on the loop (. 2 dB margin above 10-7 BER)

Good signal quality on the loop (> 2 dB margin above 10-7 BER)

Detected error on either end of the loop

Customer-side DS1 signal is absent or is in a format that does not match the provisioning of the HDSL2 circuit.

Detected error on the DS1 interface

Customer-side DS1 signal is present and synchronized

No alarm condition detected

Detected local alarm condition (H2TU-R)

Detected remote alarm condition (H2TU-C)

DS1 is provisioned for unframed operation

DS1 is provisioned for ESF framing mode

DS1 is provisioned for SF framing mode

DS1 is provisioned for AMI coding

DS1 is provisioned for B8ZS coding

Unit is not in loopback or armed state

Active local bidirectional loopback from the H2TU-R toward the customer and/or the network

Unit is armed but not in active loopback condition

Front Panel Switches

LBK REM

LBK LOC

Controls a customer loopback at the H2TU-C

Controls a bidirectional loopback at the H2TU-R

Bantam Jacks

EQ TX, RX

BRG TX, RX

Provides an intrusive access point to the data stream being transmitted to (TX) and received from (RX), the H2TU-C.

The BRG (Bridging) jack provides nonintrusive access when connected to a bit-error rate test set that is configured for bridging mode. In this configuration, it is possible to observe sychronization, test patterns, and other functions.

The BRG jack can be used for intrusive testing toward the customer. In this configuration, the H2TU-R DS1 interface must be disconnected by using the metallic-splitting EQ jacks. Then, a test set configured for terminate mode can be connected to the BRG jacks, achieving test access toward the customer equipment.

DSX-1

BRG

EQ RX

EQ TX

DSX-1

BRG

H2TU-R

DATA PUMP

HDSL2

PROVISIONING

The Total Access 3000/3010 shelf must have an Enhanced System Controller Unit (SCU). All provisioning, performance monitoring, and loopbacks are accessed through the SCU. The SCU has a faceplate-mounted DB-9 connector that supplies an RS-232 interface for connection to a VT100 or compatible controlling terminal. Set the terminal communication to 9600 bps, 8 data bits, no parity, and 1 stop bit.

1. At the Total Access 3000/3010 Login screen, enter the account name and password.

2. Select

Access Modules from the Total Access Main Menu.

3. Access the desired H2TU-R by selecting the corresponding slot number.

Once these steps are completed, the HDSL2 Main Menu appears.

HDSL2 DEPLOYMENT GUIDELINES

♦ Cable pairs must be non-loaded

♦ Total bridged tap < 2.5 kft; No single bridged tap > 2 kft

♦ 196 kHz insertion loss < 35 dB

♦ Pulse attenuation (loss on HDSL2 System Status screen) < 30 dB

♦ Maximum loop resistance is 900 ohms¶

♦ Impulse noises < 50 dBrn, as measured using a 50 kb filter

♦ Wideband noise ≤ 31 dBrn, as measured using a 50 kb filter

For further information regarding deployment guidelines and applications, refer to the Supplemental Deployment Information for HDSL, HDSL2, and HDSL4 (HDSLx) document (P/N 61221HDSLL1-10).

For more information, refer to the Installation and Maintenance Practice (P/N 61181126L2-5) available online at www.adtran.com.

Total Access 3000/3010

H2TU-R

PRICING AND AVAILABILITY 800.827.0807

TECH SUPPORT 800.726.8663

RETURN FOR REPAIR 256.963.8722

www.adtran.com

61181126L2-22A

HDSL2-Loopback Control Codes

The H2TU-R responds to multiple loopback activation processes. The loopback position is a logic loopback located within the H2TU-R internal HDSL transceiver.

♦ Manual loopback activation is possible using the control port of the Total Access 3000/3010 SCU.

♦ The H2TU-R responds to HDSL2 loopback codes as defined in ANSI document T1.418-2002.

♦ The H2TU-R responds to manual loopback activation by pressing the

panel. This activates a bidirectional loopback at the H2TU-R.

♦ The H2TU-R responds to T1 Network Interface Unit (NIU) loopback codes as described in Bellcore

TR-TSY-000312 if the H2TU-R is optioned for NIU loopbacks.

Name Code Comments

Arming (In-band) Arming (ESF)

Activation (H2TU-C) Activation (H2TU-R) Activation (H2R)

Deactivation 1001 0011 1001 0011

Disarming (in-band) Disarming (ESF)

Arming Time-out N/A Time-out is two hours.

Loop-up Time-out N/A HDSL2 element in loop-up makes transition to armed state.

H2TU-R Network Loopback

H2TU-R Customer Loopback

Loopdown All Units

11000 0001 00 10 1111 1111 (12 FF Hex)

1101 0011 1101 0011 (D3D3 Hex) 1100 0111 0100 0010 (C742 Hex) 1100 0111 0100 0001 (C741 Hex)

(9393 Hex)

11100 0010 01 00 1111 1111 (24FF Hex)

1111 1111 0000 0010 (FF02 Hex)

0011 1111 0000 0010 (3F02 Hex)

100 (1in3)

Signal sent in-band or over ESF data link. HDSL2 elements in disarmed state make transition to armed state. Detection of either code results in Smartjack loop-up, if NIU loopback is enabled.

Signal sent in-band. HDSL2 elements in armed state make transition to loop-up state. Loop-up state time-out is programmable from the H2TU-C.

If an H2R is present and the units have been armed, the H2R will loop up toward the network (when sent from the network) or loop up toward the customer (when sent from the customer). Two seconds of AIS (all 1s) will be sent, five seconds of data will pass, and then ten bit errors will be injected into the DSX-1 signal. If the pattern continues to be sent, ten errors will be injected every twenty seconds. When the pattern is removed, the unit will remain in loopback. If the pattern is reinstated, the injection of ten bit errors will resume at twenty-second intervals.

Signal sent in-band. HDSL2 element loop-up state makes transition to armed state.

Signal sent in-band or over ESF data link. HDSL2 elements in any state make transition to disarmed state.

Programmable from H2TU-C: None, 20, 60, or 120 minutes.

Loopback data from network toward network at H2TU-R.

Loopback data from customer toward customer at H2TU-R.

Loopback data from network toward network at H2TU-R.

LOC LBK button on the front

TROUBLESHOOTING

Front panel or circuit parameters indicate normal operation, as follows:

Front Panel Indicators Circuit Parameters

DSL

DS1

ALM

LBK

z Green

{ Off

♦ LOSS < 30 dB

♦ Good signal quality with no fluctuation

♦ All HDSL2 Deployment Guidelines are met

To check HDSL2 and T1 status, do the following:

1. Connect a terminal or PC to the RS-232 (DB-9) craft interface on the SCU front panel.

2. Select “3” from the ADTRAN HDSL2 Main Menu screen and “2” from the Span Status screen. This action displays the Detailed HDSL2 and T1 Status screen.

♦ Is the signal quality fluctuating (see MARGIN)? This condition occurs when real time mode is active.

♦ Is the pulse attenuation > 30 dB (see ATTEN)?

♦ Are there any errors counting on the ES, SES, or UAS registers (see ES, SES, and UAS)?

CIRCUIT ID: MM/DD/YY hh:mm Press ESC to return to previous menu

Detailed HDSL2 and T1 Status

HDSL2 RECEIVER DATA H2TU-C H2TU-R

-------- ------- MARGIN(CUR/MIN/MAX): 11/00/12 11/00/13 ATTEN(CUR/MAX): 30/30 28/28 ES 15MIN: 001 001 SES 15MIN: 000 001 UAS 15MIN: 014 017

T1 RECEIVER DATA DSX-1 DS1

------- ------ FRAMING: SF SF LINE CODE: B8ZS B8ZS ES-P/ES-L: 001/000 000/001 1. Zero Registers SES-P/SES-L: 001/000 000/000 2. Restart Min/Max UAS-P/UAS-L: 000/382 000/391 ALARMS: NONE NONE Selection:

If the answer is “Yes” to any of the above questions, the unit is not functioning properly. A cable problem or excessive loss situation is probable. There may also be intermittent cable faults or excessive noise impairments. Conduct more detailed cable testing to verify that all HDSL2 Loop Specifications are met. If intermittent faults or noise impairments are suspected, select “5” from the HDSL2 Main Menu to review the Performance History screen.

COMPLIANCE

Refer to the Total Access 3000/3010 H2TU-R Compliance Notice (P/N 61181126L2-17) for detailed compliance information.

Warranty: ADTRAN will replace or repair this product within the warranty period if it does not meet its published specifications or fails while in service.

Warranty information can be found online at www.adtran.com/warranty