ADTRAN FNID, T200 FNID User Manual

FNID and T200 FNID

Fractional T1 Network Interface Device

Installation and Maintenance

CONTENTS

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

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

3. CONNECTIONS................................................................... 3

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

5. CONTROL PORT OPERATION......................................... 4

6. DSL DEPLOYMENT GUIDELINES ................................. 11

7. TROUBLESHOOTING PROCEDURES ........................... 12

8. MAINTENANCE ................................................................ 12

9. PRODUCT SPECIFICATIONS .......................................... 12

10. WARRANTY AND CUSTOMER SERVICE .................... 12

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

FIGURES

Figure 1. ADTRAN FNID ...................................................... 1

Figure 2. FNID Option Switch Locations .............................. 2

Figure 3. FNID Network Loop Connection Locations .......... 4

Figure 4. RS-232 (DB9) Pin Assignments ............................. 4

Figure 5. Introductory Menu Screen ...................................... 7

Figure 6. HDSL Main Menu Screen ...................................... 7

Figure 7. Current System Status Screen................................. 8

Figure 8. Performance History Screen ................................... 8

Figure 9. Loopback Options Screen ....................................... 9

Figure 10. Self Test Options Screen ........................................ 9

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

Figure 12. Troubleshooting Screen ......................................... 10

Figure 13. DSL Deployment Guidelines ................................. 11

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 A. Front Panel Functions ............................................. 3

Table B. FNID Card Edge Pin Definitions ........................... 3

Table C. Definition of Screen Abbreviations ........................ 5

Table D. Loop Insertion Loss Data....................................... 11

Table E. Troubleshooting Guide .......................................... 12

Table F. FNID Unit Specifications ...................................... 13

Table A-1. FT1 Loopback Select Codes ................................ A-3

Section 61245201L1-5C

Issue 3, September 1999

CLEI Code: NCDIFBH4 _ _

FNID

1245201L1

DSL DS1

ESF

(YEL)

(GRN)

B8ZS

AMI

(YEL)

(GRN)

LBK

LOC

L B K

REM

M O N

R S 2 3 2

Figure 1. ADTRAN FNID

1. General

This practice is an installation and maintenance (I/M) guide for the ADTRAN Fractional T1 Network Interface Device (FNID). Figure 1 is an illustration of the ADTRAN FNID.

Revision History

This practice has been reissued to reflect additional support detail for two FT1 repeater applications.

The ADTRAN FNID is a network terminating unit used to deploy a fractional T1 circuit using 2-wire metallic facilities on CSA loops. This practice is written to support both the T200 FNID circuit pack (P/N 1245201L1) and the FNID standalone (P/N 4245201L1) units.

The FNID is housed in a standalone metal enclosure. The T200 FNID card plugs into a standard Type 200/400 multiple mounting shelf.

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

1Section 61245201L1-5, Issue 361245201L1-5C

With the exception of the physical dimensions of the units, the FNID and T200 FNID units are functionally identical. The FNID terminates local loop DSL signals originating from the Central Office (CO) unit and transforms the DSL signal into fractional T1 signals to be delivered to the customer.

The DSL local loop operates over a single twisted pair. The FNID communicates over the twisted pair to the FT1 DP (ADTRAN part numbers 1242040L1, 1242046LX, 1242047LX, 1242048LX, 1245205L1, 1245206L1, 1245207L1, 1245208L1) located at the CO. 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

2. INSTALLATION

C A U T I O N !

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

After unpacking the unit, immediately inspect it for possible shipping damage. If damage is discovered, file a claim immediately with the carrier, then contact ADTRAN Customer Service (see subsection 10 of this practice).

FNID Option Selections: Configuration strap P1 selects FNID settings. Figure 2 illustrates P1 location and options.

o o

The system carries a small amount of overhead used for maintenance and performance. The FNID delivers a standard ANSI T1.403 interface to the customer equipment at 1.544 Mbps. The extra bandwidth is nulled out in the form of idle stuffed channels.

Figure 2. FNID Option Switch Locations

P1 selects DS1 Tx attenuation to the customer. It is selectable between 0dB and -15dB.

Provisioning options (selecting B8ZS/AMI or SF/ ESF) are automatically controlled on the FNID when selected at the FT1 DP.

The settings on the FT1 DP are encoded and transmitted to the FNID once the circuit has achieved synchronization.

Front Panel Indicators: There are five status indicators on the front panel. See Table A for a description of these indicators.

2 Section 61245201L1-5, Issue 3 61245201L1-5C

Table A. Front Panel Functions

Indicator

DSL .................

DS1 ..................

LBK .................

RS-232 .............

REM LBK .......

LOL LBK ........

Description

Indicates five possible states of the quality of the DSL signal

Off ........................ No synchronization of FT1 DP and FNID

Red........................ Poor signal quality (≥10

Yellow .................. Marginal signal quality (≤2 dB margin above 10-7 BER)

Green .................... Good signal quality (≤2 dB margin above 10-7 BER)

Blinking ................ An error detected on the loop will cause this LED to blink briefly

This LED indicates three possible conditions described below.

Off ........................ The customer-side DS1 signal is absent or in a format that does not match the provisioned options

Blinking ................ Indicates an error has been detected on the DS1 interface

On Solid ............... The customer-side DS1 signal is present and synchronized

This LED indicates two possible loopback states as described below.

Off ........................ Unit is not in loopback

On Solid ............... Local (FNID) loopback is active

DB9 connector for craft interface. Allows connection to controlling terminal. For further information, refer to subsection 6 of this practice.

Remote Loopback. Push button to toggle Loopback active/inactive.

Local Loopback. Push button to toggle Local Loopback active/inactive.

-7

BER)

3. CONNECTIONS

All connections of the FNID are made through card edge connectors. Table B gives the card edge pin assignments for the FNID circuit pack. The circuit pack operates in either the standalone chassis (P/N 1242034L2), the ADTRAN HR4 HDSL shelf (P/N 1242008L1), or the ADTRAN HR12 HDSL shelf (P/N 1242007L1).

When the circuit pack is installed in any of the FNID enclosures, all connections are made through the enclosure backplanes. See the following ADTRAN documents for more information:

• 61242007L1-5, HR12 I/M

• 61242008L1-5, HR4 I/M

• 61242034L2-5, T400 Single Mount I/M (removable RJ-48 jacks)

NOTE: Ensure chassis ground is properly connected for either standalone or shelf-mounted applications.

Table B. FNID Card Edge Pin Definitions

Pin Designation Description

1 ................. CH GND.......... Chassis ground

5 ................. DS1-T1 ............ DS1 Receive Out tip

(to Customer Interface)

7 ................. H1-T ................ DSL Loop Tip (facility)

11 ............... CH GND .......... Chassis ground

13 ............... H1-R ................ DSL Loop ring (facility)

15 ............... DS1-R1 ............ DS1 Receive Out ring

(to Customer Interface)

17 .......................................... -48 Return

27 ............... FG .................... Frame Ground

35 .......................................... -48 VDC

49 ............... DS1-R .............. DS1 Transmit In ring

(from Customer Interface)

55 ............... DS1-T .............. DS1 Transmit In tip

(from Customer Interface)

3Section 61245201L1-5, Issue 361245201L1-5C

4. DSL SYSTEM TESTING

The ADTRAN DSL system provides extensive ability to monitor the status and performance of the DS1 signals and DSL loop signals. The front panel LEDs on the FNID are explained in subsection 2 of this practice. Additional testing features are described in this section. Specifically, the Bantam jacks on the front panel of the FNID are described.

DS1 MON Bantam Jack

The FNID provides a dual Bantam jack on the front panel. This jack, labeled “MON,” provides a non-intrusive access point for monitoring the transmit and receive signals at the DS1 interface point.

NOTE: MON Rx provides access to the DS1 input from the customer’s equipment. MON Tx provides access to the DS1 output of the FNID toward the customer.

FNID Loopbacks

There are two loopbacks available to the FNID. FNID network loopback loops the FT1 signal back toward the network. FNID CPE loopback loops the FT1 signal back toward the customer. FNID network loop connection locations are illustrated in Figure 3. Appendix A contains diagrams and descriptions of the FT1 system loopback capabilities.

5. CONTROL PORT OPERATION

The FNID provides a faceplate-mounted DB9 connector that supplies an RS-232 interface for connection to a controlling terminal. The pinout of the DB9 is illustrated in Figure 4.

TXD (Transmit Data) RXD (Receive Data)

SGN (Signal Ground)

Figure 4. RS-232 (DB9) Pin Assignments

The terminal interface operates at data rates from

2.4 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 VT-100 or compatible.

NOTE: If you are using a personal computer (PC) with terminal emulation capability, be sure to disable any power saving programs. Otherwise, communication between the PC and the HDSL unit may be disrupted, resulting misplaced characters or screen timeouts.

T1 TO CPE

DS1

R1 TO CPE

T FROM CPE

DS1

R FROM CPE

T1 LOOP1

R1 LOOP1

Operation

A terminal session is initiated by entering multiple space bar characters, which are used by the FNID to determine the speed of the terminal. Once the speed has been determined, an Introductory menu will appear, as illustrated in Figure 5. For abbreviations used in the screen diagrams, refer to Table C.

GND

-48V

From the Introductory menu, the Main menu may be selected. The Main menu provides access to detailed performance and configuration information, as illustrated in Figure 6, HDSL Main Menu Screen.

Figure 3. FNID Network Loop Connection

Locations

4 Section 61245201L1-5, Issue 3 61245201L1-5C

Table C. Definition of Screen Abbreviations

Abbreviation Definition

ES ......................... Errored seconds

DS1 (SF)....... Second in which a BPV or frame bit error occurs

DS1 (ESF) .... Second in which a BPV or CRC error occurs

DSL .............. Second in which a CRC error occurs

SES ....................... Severely errored seconds

DS1 (SF)....... Second in which 1554 BPVs or 8 frame bit errors occur

DS1 (ESF) .... Second in which 1544 BPVs or 320 CRC errors occur

DSL .............. Second in which 165 CRC errors occur

UAS ...................... Unavailable seconds

DS1 ............... Second in which there is a loss of signal or sync

DSL .............. Second in which there is a loss of signal or sync

SF.......................... Superframe format

ESF ....................... Extended superframe format

B8ZS ..................... Binary 8-zero substitution

AMI ...................... Alternate mark inversion

LBO ...................... Line build-out

BPV ...................... Bipolar violation

DS1 ............... Second in which a bipolar violation occurs

NIU ....................... T1 network interface unit

S/N ........................ Serial number

15M ...................... Fifteen-minute period

24H ....................... Twenty-four-hour period

From the Main menu the following screens can be accessed.

1. Current System Status

2. Performance History

3. ADTRAN Information

4. Loopback Options

5. Self Test

6. Provisioning

7. Troubleshooting

The Current System Status screen, illustrated in Figure 7, provides quick access to status information for both the FT1-DP and FNID. The Elapsed Time display indicates the period of time since the unit began collecting performance information.

Current information for the DSL and DS1 interfaces is consolidated on this screen. A key to the information provided is found in the center of the screen. Arrows indicate the key applies to both the FT1 DP and FNID.

LOSS ........................ Pulse Attenuation Measurement

SYNC ....................... HDSL Loop 1 Sync Status

ES 15M/24H ............ Errored Seconds

SES 15M/24H .......... Severely Errored Seconds

UAS 15M/24H ......... Unavailable Seconds

For example: ES 012/264 indicates that 12 errored seconds have occurred in the current 15-minute period while a total of 264 errored seconds have occurred in the last 24 hours.

5Section 61245201L1-5, Issue 361245201L1-5C

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