ADTRAN DE-4E User Manual

FT1 DP

Fractional T1 Dataport For Nortel DE-4E Shelf

Installation and Maintenance

CONTENTS

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

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

3. CONNECTIONS ........................................................6

4. DSL SYSTEM TESTING ..........................................6

5. CONTROL PORT OPERATION ..............................7

6. DSL DEPLOYMENT GUIDELINES......................13

7. MAINTENANCE .....................................................14

8. TROUBLESHOOTING PROCEDURES ................14

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

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

Appendix A. FT1 Loopbacks........................................ A-1

FIGURES

Figure 1. ADTRAN FT1 DP for Nortel DE-4E Shelf ...1

Figure 2. P1 Switch Location .........................................5

Figure 3. FT1 DP Edge Connector Wiring ....................6

Figure 4. Bantam Jack Arrangement..............................6

Figure 5. RS-232 (DB-9) Pin Assignments....................7

Figure 6. Introductory Menu Screen ..............................8

Figure 7. FT1 DP Main Menu Screen ............................8

Figure 8. Current System Status Screen.........................9

Figure 9. Performance History Screen .........................10

Figure 10. Loopback Options Screen .............................10

Figure 11. Self-Test Options Screen ..............................11

Figure 12. Provisioning Options Screen ........................11

Figure 13. Troubleshooting Screen ................................12

Figure 14. DSL Deployment Guidelines........................13

Figure A-1. FT1 Loopbacks .......................................... A-1

Figure A-2. FT1 DP Network Loopback....................... A-1

Figure A-3. FT1 DP CPE Loopback ............................. A-1

Figure A-4. FT1 Repeater #1 or # 2 Network Loopback . A-2

Figure A-5. FNID Network Loopback .......................... A-2

Figure A-6. FNID CPE Loopback ................................. A-2

TABLES

Table 1. Protected Loopback Mode Requirement ........2

Table 2. SW1 Option Settings.......................................3

Table 3. SW2 and SW3 Option Settings.......................4

Table 4. Front Panel Indicators and Switches ..............5

Table 5. Definition of Screen Abbreviations ................ 7

Table 6. Loop Insertion Loss Data..............................13

Table 7. Troubleshooting Guide .................................14

Table 8. FT1 DP Product Specifications ....................15

Table A-1. FT1 Loopback Select Codes ...................... A-1

Section 61245207L2-5C

Issue 3, July 2000

CLEI Code # D4D31R8D _ _

FT1 DP

1245207L1

DSL

DS1

ALM

R S 2 3 2

DSO O U

X I N

Figure 1. ADTRAN FT1 DP for Nortel DE-4E Shelf

1. GENERAL

This practice serves as an Installation and Maintenance guide for the ADTRAN Fractional T1 Dataport (FT1 DP). The ADTRAN FT1 DP (P/N 1245207L2) is the Central Office (CO) unit used to deploy a repeater-less FT1 circuit using 2-wire metallic facilities. The unit occupies one slot in a standard Nortel DE-4E (or equivalent) shelf. Figure 1 is an illustration of the ADTRAN FT1 DP.

Revision History

This is the third release of this document. Clarifications were made to the SW1 Option Settings.

Description

Signals are provided to and from the channel bank or RT, while 2B1Q HDSL signals are provided to 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.

1Section 61245207L2-5, Issue 261245207L2-5C

C A U T I O N

The FT1 Digital Subscriber Loop (DSL) local loop

Note: Minimum of 35 TIP bytes required to disable established latching loopback. X = don't care bit.

Function Sequence Byte Code # of Received Bytes

Transition in progress (TIP) X0111010

Loopback select code (LSC) X1010101 - OCU X0110001 - CSU X1000001 - NI

Loopback enabled (LBE) X1010110

Far-end voice (FEV) X1011010

Minimum of 35 TIP bytes

Minimum of 35 LSC bytes

Minimum of 100 LBE bytes

Minimum of 35 FEV bytes

Clear existing loopbacks

Identify device to be looped

Prepare loop, send MAP code after 30 bytes

Activate loopback

operates as an independent subsystem, over a single twisted pair. The FT1 DP communicates over this twisted pair to the Fractional Network Interface Device (FNID) and/or FT1 repeater listed below:

Part Number Unit Description

1242041LX ................. T400 FNID Circuit Pack

1245201LX ................. T200 FNID Circuit Pack

1242042LX ................. T400 FNID Standalone

1242050L2 .................. FT1 Repeater

1245211LX ................. FT1 Repeater

The payload between FT1 DP and FNID is programmable from the faceplate rotary switch as follows:

2 channels (minimum) ..................... 128 kbps

3 channels ........................................ 192 kbps

4 channels ........................................ 256 kbps

5 channels ........................................ 320 kbps

6 channels ........................................ 384 kbps

7 channels ........................................ 448 kbps

8 channels ........................................ 512 kbps

9 channels ........................................ 576 kbps

10 channels ...................................... 640 kbps

11 channels ...................................... 704 kbps

12 channels (maximum) .................. 768 kbps

Time Slot Allocation

The bandwidth may be taken by the FT1 DP in contiguous or alternating time slots. These slots must not have other channel cards plugged in the slots taken by the FT1 DP bandwidth. This will cause contention on the transmit side of the channel bank.

The FT1 will not wrap around the channels at the end of the channel bank. For example, if n is equal to 4 channels and the FT1 DP is plugged into slot 23 of the channel bank, then only channels 23 and 24 can be used, not channels 1 and 2.

Protected Loopback

Protected Loopback prevents false latching loopback occurrences when the latching loopback is embedded within the customer payload. This feature is enabled by setting SW1-8 to ON. See Table 1 for the latching loopback sequence requirement when Protected Loopback is enabled.

Table 1. Protected Loopback Mode Requirement

T1E1.2/99-007R1 (Latching Loopback)

The system carries a small amount of overhead used for maintenance and performance monitoring related functions.

NOTE

Changing the number of DS0s does not affect unit provisioning.

2. INSTALLATION

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

C A U T I O N

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

Service.

The FT1 DP plugs directly into a Nortel DE-4E shelf. The unit occupies a single slot. No installation wiring is required.

Three switch packs (SW1, SW2, SW3) are used to configure the mode of operation for the unit. A definition of each switch is shown in Table 2 and Table 3. Configuration may be performed by manually selecting each option switch, or alternatively, set through the craft interface. Manual configuration must be performed before installing the unit into the channel bank.

2 Section 61245207L2-5, Issue 3 61245207L2-5C

Table 2. SW1 Option Settings

(Default settings are indicated in bold typeface.)

Switch Function Description

SW1-1 ...... Code Select ............................................ SW1-1 On selects B8ZS line code. SW1-1 Off selects AMI.

Off .......... AMI

On .......... B8ZS

SW1-2 ...... Framing .................................................. SW1-2 Off selects SF. SW1-2 On selects ESF.

Off .......... SF

On .......... ESF

SW1-3 ...... Channel Select ....................................... Selects between Alternating and Contiguous DS0 channels.

Off .......... Alternate

On .......... Contiguous

SW1-4 ...... Latching Loopback ................................ Used to enable or disable latching loopbacks.

Off .......... Disabled

On .......... Enabled

SW1-5 ...... Loopback Timeout ................................. Used to enable or disable automatic loopback timeout.

Off .......... Automatic loopback timeout is disabled

On .......... Loopback timeout is enabled and set for 20 minutes.

SW1-6 ...... Dumb/Smart Channel Bank Enable ...... Used to select dumb or smart channel bank operation

Off .......... Unit is provisioned for an NT1 bank with a Smart Transmit/Receive

Unit (STRU) installed. Two-state signaling available (smart mode)

On .......... Unit is provisioned for an NT1 bank with a Transmit/Receive

Unit (TRU) installed. Four-state signaling available (dumb mode)

SW1-8 ...... Protected Loopback ............................... Used to enable or disable protective loopback.

Off .......... Disabled.

On .......... Enabled.

3Section 61245207L2-5, Issue 261245207L2-5C

Table 3. SW2 and SW3 Option Settings

(Default settings are indicated in bold typeface)

Switch Function Description

SW3-4 ........... A/B Signaling for Channel 1 ....... Enables or Disables A/B Robbed Bit Signaling for Channel 1.