ADTRAN 3060 User Manual

Total Access® 3010 LTU

High-bit-rate Digital Subscriber Line

Transceiver Unit for the Central Office

Installation and Maintenance

CONTENTS

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

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

3. OPERATION ........................................................................ 3

4. HDSL SYSTEM TESTING .................................................. 4

5. SCU CONTROL PORT OPERATION (HDSL) ................. 5

6. HDSL DEPLOYMENT GUIDELINES ............................. 17

7. MAINTENANCE ............................................................... 17

8. PRODUCT SPECIFICATIONS ......................................... 17

9. WARRANTY AND CUSTOMER SERVICE ................... 17

Appendix A. HDSL H-LSS Circuit Configuration and Turnup

for G.703 Fed Systems .................................... A-1

Appendix B. HDSL H-LSS Circuit Configuration and Turnup

for DS3-Fed Systems ...................................... B-1

FIGURES

Figure 1. ADTRAN Total Access 3010 LTU ........................... 1

Figure 2. LTU Edge Connector Wiring .................................... 2

Figure 3. LTU Span Powering Diagram ................................... 4

Figure 4. HDSL Loopbacks ...................................................... 5

Figure 5. RS-232 (DB-9) Pin Assignments .............................. 5

Figure 6. Logon Screen ............................................................. 7

Figure 7. Total Access Screen ................................................... 7

Figure 8. Access Module Menus Screen................................... 8

Figure 9. HDSL Main Menu Screen ......................................... 9

Figure 10. Configuration Screen ................................................. 9

Figure 11. Provisioning Screen ................................................. 10

Figure 12. Network Source Screen ........................................... 10

Figure 13. Status Screen ............................................................ 11

Figure 14. REG #1 Status Screen.............................................. 11

Figure 15. Alarms Screen .......................................................... 12

Figure 16. Test Screen............................................................... 13

Figure 17. Performance History Screen.................................... 13

Figure 18. Protection Configuration Screen – Main ................ 14

Figure 19. Protection Configuration Screen – Auxiliary ......... 14

Figure 20. Set Circuit ID Screen ............................................... 16

Figure 21. Alarm Option Screen ............................................... 17

TABLES

Table 1. Faceplate LED Indicators .......................................... 3

Table 2. Screen Abbreviations ................................................. 6

Table 3. LP1 and LP2 Guidellines ......................................... 12

Table 4. Protection Configuration Option Settings ............... 15

Table 5. Total Access 3010 LTU Specifications................... 18

Table B-1. Faceplate LED Indicator ....................................... B-2

Section 61182007L1-5A

Issue 1, June 2001

LT U

1182007L1

PWR

G703

TST

LP1

LP2

ALM

E Q

M O N

ACT

A P S

GRN = NORM

YEL = MAN

Figure 1. ADTRAN Total Access 3010 LTU

The E1 input signal is supplied from the network via individual G.703 lines or an E3 multiplexer. The HDSL signals are provided to the local loop. The Total Access 3010 LTU works in conjunction with the ADTRAN NTU and REG to provide an E1 service up to 9.4 km on the local loop.

The LTU works with multiple list versions of the HDSL unit Remote end (NTU) and HDSL Range Extender (REG) as listed below:

• 1245043Lx Low Voltage T400 REG

• 1245031Lx, Low Voltage T200 NTU

• 1245033Lx, Nx64 NTU

• 1245044L3, 4th Gen - T400 NTU

• 1245035Lx, 5th Gen - T200 NTU

1. GENERAL

The ADTRAN Total Access 3010 HDSL Transceiver Unit for the Central Office (LTU), part number 1182007L1, is the Central Office (CO) unit used to deploy an HDSL E1 circuit using 4-wire metallic facilities. See Figure 1.

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

The Total Access 3010 LTU can be deployed in circuits consisting of one LTU and one NTU or in a protection configuration requiring two LTUs and two NTUs. When deployment requires the HDSL Range Extender (REG), this LTU can be deployed with one or two REGs and one NTU.

1Section 61182007L1-5, Issue 161182007L1-5A

The HDSL local loop operates as two independent subsystems each operating over a single twisted pair. The LTU communicates over these two twisted pairs to the HDSL Transceiver Unit - Remote end (NTU). Each subsystem carries half of the total bandwidth along with a small amount of overhead used for maintenance and performance monitoring.

NTU at less than -120 Vdc. Span powering voltages meet all requirements of IEC 950.

REVISION HISTORY

This is the first issue of this practice. Future changes to this document will be summarized in this paragraph.

System power and alarm bus connections are made

2. INSTALLATION

through the backplane of the Total Access 3010 shelf. E1 and HDSL signals are connected through the 50pin shelf connectors related to each individual slot.

The LTU contains onboard fuses. If a fuse opens, it supplies a -48 Vdc voltage to the fuse alarm bus and all front panel indicators will be Off. These fuses are not field replaceable.

The Total Access 3010 LTU uses a DC-to-DC converter to derive its internal logic and span powering voltages from the -48 Vdc office supply. The Total Access 3010 LTU can span power REGs and NTUs as listed above. When used with REGs and NTUs, the LTU can span power one REG and an

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

Service.

The Total Access 3010 LTU occupies one line card slot in a Total Access 3010 shelf. Power and alarm signals are provided to the card through the backplane of the shelf. E1 and HDSL loop signals are connected to the mass termination shelf connectors corresponding to the slot the unit occupies. See Figure 2 for LTU edge connector wiring.

P2, Row A P2, Row B P2, Row C

- 48 Volt return

Chassis ground

Chassis ground 3

HDSL Loop 2 Ring (facility) 7

Fuse alarm

Receive G.703 Ring backup connection

Transmit G.703 Ring backup connection

Receive G.703 Ring normal connection

Transmit G.703 Ring normal connection

- 48 Volt return

C A U T I O N !

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

- 48 Volt DC A

- 48 Volt DC A 3

HDSL Loop 1 Ring (facility)

HDSL Loop 1 Tip (facility)

HDSL Loop 2 Tip (facility) 7

Receive G.703 Tip backup connection

Transmit G.703 Tip backup connection

Receive G.703 Tip normal connection

Transmit G.703 Tip normal connection

- 48 Volt DC B

Figure 2. LTU Edge Connector Wiring

2 Section 61182007L1-5, Issue 1 61182007L1-5A

3. OPERATION

Powering Options

The unit features automatic sensing based on the current load detected on the HDSL circuit. Span powering at less than -120 Vdc allows for span powering of circuits without REGs or with one REG.

LTU Alarm Outputs

Pin B10 of the LTU edge connector interface provides a fuse alarm signal that connects -48 Vdc to this pin in the presence of a blown fuse. This indicates the card has malfunctioned and should be replaced.

Front Panel Operation Using the Total Access 3010 SCU (P/N 1181017L1)

The front panel interface consists of a 4-character alphanumeric LED display and a 3-position switch that controls the display.

Table 1. Faceplate LED Indicators

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The switch positions are:

Center OFF Up MODE Down SELECT

The switch is spring-loaded to the center (OFF) position. The display is used to report the loop margins (dB), and other operational conditions.

Faceplate Indicators

The Total Access 3010 LTU has seven faceplate LEDs, illustrated in Table 1, which indicate operational status.

The Total Access 3010 LTU plugs directly into the Total Access 3010 shelf. No installation wiring is required.

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3Section 61182007L1-5, Issue 161182007L1-5A

Status Mode

After selecting the LTU from the SCU, the display enters Status mode. It alternately displays loop margin for each HDSL loop, any active alarm condition, and general status conditions.

The HDSL loop margin is displayed for each loop that is active with the messages “1=xx” and “2=xx” where xx is the HDSL loop margin for that loop. The loop margin is held on the display for 2 seconds. The loop margin will not be displayed if that loop is in start-up or LOS condition.

E1 Core Frame Mapping

The function of E1 core frame mapping is to assign 2048 kbps framed E1 data to a 2304 kbps core frame filled with 2048 kbps data. This converts a 32-byte E1 frame into a 36-byte core frame (a ratio of 1:1.125). The extra four bytes are filled with TSO, TS16, or AIS data. Once the 36-byte core frame data block reaches the HDSL loops, the data is split between the two HDSL loop pairs.

G.703

MON

LTU DATA PUMP

LTU

LOOP DC

POWER SOURCE

HDSL

LOOP 1

HDSL

LOOP 2

HDSL LOOP 1

HDSL LOOP 2

EQ RX

EQ TX

4. HDSL SYSTEM TESTING

The ADTRAN HDSL system provides extensive ability to monitor the status and performance of the G.703 signals and HDSL loop signals. Detailed performance monitoring is provided by the V.24 Control Port on the ADTRAN System Controller Unit (SCU). These features are valuable in troubleshooting and isolating any system level problems that may occur at installation or during operation of the HDSL system.

LTU G.703 Bantam Jack

The LTU provides two dual Bantam jacks on the front panel. These jacks provide a metallic splitting and test access of the G.703 interface for connecting test equipment to transmit and receive signals with the LTU. See Figure 3.

HDSL Loopbacks

The E1 LTU offers five diagnostic loopbacks for use in verifying proper data path operation. These loopbacks are activated via the V.24 craft interface.

Figure 3. LTU Span Powering Diagram

NTU Local Loopback

The NTU HDSL transceivers are looped back at a point immediately before the HDSL termination. This loopback enables a complete checkout of the NTU data path. The NTU Local Loopback is activated via the V.24 craft interface.

NTU Remote Loopback

The NTU HDSL transceivers are looped back at a point immediately before the G.703 termination. This loopback enables a complete checkout of the NTU data path, the HDSL link, and the LTU data path. The NTU Remote Loopback is activated via the V.24 craft interface.

LTU Local Loopback

The LTU HDSL transceivers are looped back at a point immediately before the HDSL termination. This loopback enables a complete checkout of the LTU data path. The LTU Local Loopback is activated via the V.24 craft interface.

These loopbacks disrupt normal data transmission. Make sure that you receive prior authorization to place an HDSL circuit out of service prior to activating any loopback. These loopbacks remain active until cleared or by expiration of the loopback timeout period. See Figure 4.

LTU Remote Loopback

The LTU HDSL transceivers are looped back at a point immediately before the G.703 termination. This loopback enables a complete checkout of the NTU data path, the HDSL link, and the LTU data path. The LTU Remote Loopback is activated via the V.24 craft interface.

4 Section 61182007L1-5, Issue 1 61182007L1-5A

LTU Network-Side Loopback

G.703

LTU

NTU Network-Side Loopback

G.703

LTU

NTU Customer-Side Loopback

AIS

LTU

LTU Customer-Side Loopback

LTU

LTU and NTU Bilateral Loopback

LTU

REG Network-Side Loopback

LTU

Dual REG Network-Side Loopback

G.703

LTU

Figure 4. HDSL Loopbacks

NTU

AIS

G.703

AIS

G.703

G.703AIS

G.703G.703

AIS

G.703G.703

LOCAL

LOOP

LOCAL

LOOP

LOCAL

LOOP

LOCAL

LOOP

LOCAL

LOOP

REG

REG NTU

X = Signal Inactive

REG

AIS

G.703

LOS2 No synchronization of LTU and NTU on

loop 2 HER1 HDSL loop1 error HER2 HDSL loop2 error 1=XX* Loop 1 in Sync 2=XX* Loop 2 in Sync * XX is the Signal Quality Level of the loop and

ranges from 0-20, where 0 is an indicator of poor signal quality and 20 represents good signal quality.

Display Off Mode

The display enters Display Off Mode from Status Mode after 5 minutes with no activity on the display switch. While in this mode, the display is completely off.

The display will return to Status Mode under the following conditions:

• When either MODE or SELECT is activated. Display starts again when the switch is released

• When a message other than loop margin is to be displayed

5. SCU CONTROL PORT OPERATION (HDSL)

The Total Access 3010 SCU provides a faceplatemounted DB-9 connector that supplies an RS-232 interface for connection to a controlling terminal. The pinout of the DB-9 is illustrated in Figure 5. The terminal interface operates at data rates from 1.2 kbps to 19.2 kbps. The asynchronous data format is fixed at 8 data bits, no parity, and 1 stop bit. The supported terminal type is VT100 or compatible.

REG Loopback

The REG HDSL transceivers are looped back toward the LTU. This loopback enables a complete checkout of the LTU data path, the HDSL link between the LTU and the REG, and the REG data path. The REG loopback is activated via the V.24 craft interface.

Front Panel

Display Message/Condition: LLOS LTU E1 Loss of Sync NLOS NTU E1 Loss of Sync LERR LTU E1 error NERR NTU E1 error LBPV LTU E1 Bipolar violation (BPV) NBPV LTU E1 Bipolar violation (BPV) LOS1 No synchronization of LTU and NTU on

loop 1

TXD (Transmit Data)

RXD (Receive Data)

SGN (Signal Ground)

Figure 5. RS-232 (DB-9) Pin Assignments

5Section 61182007L1-5, Issue 161182007L1-5A

Many portable personal computers use power-saving programs that are known to interfere with applications running on the personal computer. If using a portable personal computer with terminal emulation capability, communication between the computer and the HDSL unit may be periodically disrupted if power-saving programs are being used on the personal computer. The symptoms may include misplaced characters appearing on the screen and/or the occurrence of screen timeouts. These symptoms are not disruptive to the operation of the circuit and are avoidable if the power-saving options are disabled or removed.

Menus

For abbreviations used in the screen diagrams, see Table 2.

Table 2. Screen Abbreviations

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The screens illustrated in Figure 6 through Figure 18 are for an HDSL circuit deployed with ADTRAN’s Low Voltage HDSL technology. The circuit includes an LTU, NTU, and two REG. This scenario was chosen for inclusiveness of functionality. However, other configurations are possible, such as one REGs, and the display will vary slightly from those shown in this section.

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6 Section 61182007L1-5, Issue 1 61182007L1-5A

Accessing the HDSL circuit information via the Total Access SCU requires Logon and a Password using the

After successful logon, the Total Access System Screen will appear as illustrated in Figure 7.

SCU Control Port. See Figure 6, Logon Screen.

Shelf: 77 Total Access System 04/07/01 15:44

Unacknowledged Alarms: MAJOR MINOR INFO

Total Access System

Account Name:

‘?’ - System Help Screen

Figure 6. Logon Screen

Shelf: 77 Total Access System 04/07/01 15:45 Unacknowledged Alarms: MAJOR MINOR INFO

Total Access

1. System Controller

2. Common A - [DS3MX]

3. Common B - [DS3MX]

4. Access Modules

5. System Alarms

6. Logoff

Selection:

‘?’ - System Help Screen

Figure 7. Total Access Screen

7Section 61182007L1-5, Issue 161182007L1-5A

From the Total Access System Screen, select Access Modules by typing the number corresponding to the option followed by <Enter>. This will display the Access Module Menu Screen, illustrated in

Shelf: 77 Total Access System 04/07/01 15:46 Unacknowledged Alarms: MAJOR MINOR INFO

Access Module Menus

Figure 8, which will display the Access Modules occupying the Total Access 3010 shelf. Select the corresponding channel slot number for an LTU.

1 - LTU......... [Major] 15 - ............ [None]

2 - ............ [None] 16 - ............ [None]

3 - ............ [None] 17 - ............ [None]

4 - ............ [None] 18 - ............ [None]

5 - ............ [None] 19 - ............ [None]

6 - ............ [None] 20 - ............ [None]

7 - ............ [None] 21 - ............ [None]

8 - ............ [None] 22 - ............ [None]

9 - ............ [None]

10 - ............ [None]

11 - ............ [None]

12 - ............ [None]

13 - ............ [None]

14 - ............ [None]

Enter Channel Slot Number :

Inverse = Busy Modules

Figure 8. Access Module Menus Screen

8 Section 61182007L1-5, Issue 1 61182007L1-5A

This will display the ADTRAN HDSL Main Menu as illustrated in Figure 9.

From the ADTRAN HDSL Main Menu, the following screens can be accessed.

1. Configuration

2. Provisioning

3. Status

4. Alarms

Shelf: 1 Slot: 5 Total Access System 04/07/01 09:05 Unacknowledged Alarms: MAJOR MINOR Circuit ID:

HDSL Line Termination Unit

1. Configuration

2. Provisioning

3. Status

4. Alarms

5. Test

6. Performance Monitoring

7. Protection Configuration

8. Circuit ID

9. Alarm Options

5. Test

6. Performance Monitoring

7. Protection Configuration

8. Circuit ID

9. Alarm Options

The Configuration Screen, illustrated in Figure 10, provides serial numbers and the manufacturing date for each component in the HDSL circuit.

Selection: ‘?’ - System Help Screen

Figure 9. HDSL Main Menu Screen

Shelf: 1 Slot: 5 Total Access System 04/07/01 09:30 Unacknowledged Alarms: MAJOR MINOR Circuit ID:

Configuration

Unit Name LTU Unit Name NTU Part Number 1182007L1 Serial Number 0100001481 Serial Number HW098765432109 Product Revision 01 Product Revision HW Manufacture Date 10/00 Software Revision A Manufacture Date 01/95

Unit Name REG1 Unit Name REG2 Serial Number 0100748669 Serial Number 0100477236 Product Revision 01 Product Revision 01 Manufacture Date 10/00 Manufacture Date 10/00

‘?’ - System Help Screen

Figure 10. Configuration Screen

9Section 61182007L1-5, Issue 161182007L1-5A

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