Equipment Issue 3030‐100647 Rev. A, November 2010

Section 522‐100‐203

�

� 2010 Westell, Inc. All rights reserved. *CLEI is a trademark of Telcordia Technologies. Westell� is a trademark of Westell, Inc.

Page 1 of 16

1011I3RA

Westell 522‐10I3 DS3 Network Interface Unitwith Performance Monitoring

CLEI* Code: NCIPCJ0DAA

CONTENTS PAGE #

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

2. APPLICATIONS 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. CIRCUIT/FUNCTIONAL DESCRIPTION 3. . . . . . . . .

4. OPTIONS & FEATURES 4. . . . . . . . . . . . . . . . . . . . . . .

5. INSTALLATION 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6. CRAFT PORT SETUP AND OPERATION 6. . . . . . . . .

7. PROVISIONING 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8. LOOPBACK 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9. DS3 TEST PATTERN GENERATOR 9. . . . . . . . . . . . . .

10. PERFORMANCE MONITORING 10. . . . . . . . . . . . . . .

11. TL1 COMMANDS 13. . . . . . . . . . . . . . . . . . . . . . . . . . . .

12. TESTING & TROUBLESHOOTING 13. . . . . . . . . . . . .

13. CUSTOMER & TECHNICAL SERVICES 14. . . . . . . .

14. WARRANTY & REPAIRS 14. . . . . . . . . . . . . . . . . . . . . .

15. SPECIFICATIONS 14. . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. GENERAL

1.1 Document Purpose

This document describes the Westell 522‐10I3 DS3 NetworkInterface Unit, shown in Figure 1. See Table 8 for informationconcerning other models in the same product family.

‐ NOTE ‐

Hereafter, the 522‐10I3 DS3 Network Interface Unit will bereferred to as the “522‐10I3”.

1.2 Document Status

The Issue 3 equipment removes the infrared (IR) functional­ity. Whenever this document is updated, the reason will bestated here.

1.3 Product Purpose and Description

The BroadTerm� DS3 Network Interface Unit with Perfor­mance Monitoring, 522‐10I3, serves as an interface betweenDS3 Network Facilities and customer premise equipment. The522‐10I3 is a DS3‐200 MECHANICS plug‐in (1/2 width of 400mechanics but with a 40‐pin connector), allowing up to 24 unitsto be installed in a single rack‐mounted shelf. The performancemonitoring and remote testing capability of the 522‐10I3 allowquick isolation of circuit problems at the point of demarcation.

Figure 1. Isometric View of 522‐10I3 NIU

In addition, the unit's signal regeneration provides cost‐effec­tive extension of DS3 services.

1.4 Product Mounting

The 522‐10I3 is a DS3‐200 MECHANICS NIU (1/2 width of400 mechanics but with a 40‐pin connector) and makes electri­cal connections to the Facility and CPE sides of the circuitthrough a 40‐pin card‐edge connector of a DS3‐200 MECHA­NICS type mounting. The 522‐10I3 is typically mounted in aDBMA200 Series mounting shelf, at the customer premises onthe network side of the demarcation point between the Net­work and CPE. The mounting shelf for this DS3 PM‐NIU isgenerally mounted after a multiplexer system. Westell offers awide range of mountings available in both backboard (wall)and rack mount versions for DS3 NIUs.

1.5 Product Features

The 522‐10I3 offers the following features.

� DS3‐200 MECHANICS NIU (1/2 width of 400 mechan­ics but with a 40‐pin connector)

� DS3 interface per ANSI T1.404‐2002

� Signal regeneration

� Loss of Signal (LOS) detection

� Loopback Time‐out option of 20, 60, 120 minutes, 24hours, or disabled

Section 522‐100‐203 030‐100647 Rev. A �

21011I3RA

NETWORK RX

TX

DSX-3 NI

0 to 900 feet 0 to 900 feet

FIBERMUX

CPE

522-10I3

Figure 2. Typical Application Using the BroadTerm PM‐NIU

(Std. LPBK Code)

NETWORKRX

TX

(Alt. LPBK Code #1)

DSX-3 NI

0 to 900 Feet

522-10I3 522-10I3

FIBERMUX

CPE

Figure 3. Application Using Two BroadTerm PM‐NIUs in a Tandem Configuration

0 to 900 Feet 0 to 900 Feet

(Std. LPBK Code)

FIBERMUX

CPENETWORK

RX

TX

(Alt. LPBK Code #1)

DSX-3 NI

(Alt. LPBK Code #2)

522-10I3522-10I3522-10I3

0 to 900 Feet 0 to 900 Feet

Figure 4. Application Using Three BroadTerm PM‐NIUs in a Tandem Configuration

0 to 900 Feet0 to 900 Feet

� Network (Single) or Network and CPE (Dual) Loop­back operation with remote, local or manual loopbackactivation/deactivation capability

� Network and CPE‐side Performance Monitoring (PM)capability with date and time stamped history

� Event and alarm log with date and time stamping

� Local Performance Monitoring retrieval capability via afront panel RS‐232 Craft Port

� Remote Performance Monitoring retrieval capability viaembedded overhead channel (NPRM) or TL1

� Monitor access for both Network and CPE side viafront‐panel DS3 WECO‐440A‐type monitoring jacks

� Automatic fail‐safe operation; transmission paths re­main transparent in the event of loss of power

� Built‐in DS3 test pattern generator with pattern selec­tion and far end loopback

� Integrated DS3 Level Detection

� TL1 command support

� Meets the following regulatory, safety, or environmentalspecifications or requirements:

� Telcordia GR‐499‐CORE and ANSI T1.102‐1993

� Meets limits of radiated and conducted emissionsdefined in FCC Part 15 Class A equipment

� UL 60950‐1, 1st Edition

� CAN/CSA C22.2 No. 60950‐1‐03

2. APPLICATIONS

The 522‐10I3 provides an interface between a DS3 Facility andthe customer interface by terminating a DS3 (44.736Mb/s)High‐Cap Digital Service derived over a 75‐ohm coaxial cablepair. The 522‐10I3 also monitors the performance of the DS3service and isolates service problems. The 522‐10I3 can also beused in range extension applications. The primary function ofthe unit is to provide a maintenance far end loopback alongwith Performance Monitoring. In addition, it contains a built‐in pattern generator for testing purposes. These features aid insectionalizing circuit problems.

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31011I3RA

2.1 Location and Mounting

The 522‐10I3 is installed at the customer premises on the net­work side of the demarcation point between the Network andCPE. See Figure 2. The mounting assembly used to house theDS3 PM‐NIU is generally mounted after a multiplexer system.Westell offers a variety of mountings for wall‐mounted andrelay rack applications.

The 522‐10I3 can be installed between the multiplexer and theCPE with a range of 900 feet on each side of the unit (Figure 2).The unit regenerates the signal in both directions. For automat­

ic fail‐safe operation during cut‐thru, a maximum loop lengthof 900 feet from the multiplexer cannot be exceeded.

The NIUs can be installed in tandem to provide additionalrange extension (Figure 3 and Figure 4). In this configuration,the loopback code for the unit at the network end should bekept at the standard setting, being treated as a standard NIU.To avoid conflict, the additional unit(s) must be optioned for analternate loopback code through the Craft Port.

‐ NOTE ‐

References to transmission ranges apply to 728‐ and 734‐type coaxialcable. For applications using 735‐type cable (higher loss), all dis­tances should be halved.

3. CIRCUIT/FUNCTIONAL DESCRIPTION

Refer to Figure 5, the 522‐10I3 Functional/Block Diagram, asneeded, while reading the following circuit description.

3.1 Side 1 and Side 2 Transmission Paths

The 522‐10I3 provides transformer coupling on all transmis­sion ports. Both the Side 1 (NET to CPE) and Side 2 (CPE ToNET) paths provide regeneration of the Network and CPE sig­nals. An optional output attenuator allows the signal leveltoward the CPE to be reduced by approximately 6dB.

3.2 Monitoring Jacks

Two front‐panel accessible WECO 440A‐type Jacks providenon‐intrusive monitoring of the DS3 signals. The test setshould be optioned for monitoring to insure proper levels arereceived.

� RCV FROM NET: Allows monitoring access to the DS3signal toward the CPE (ahead of the loopback point)

� XMT TO NET: Allows monitoring access of the DS3signal toward the network

3.3 Framing Format and Line Code

The BroadTerm PM‐NIU interfaces DS3 signals using eitherM13 or C‐Bit Parity framing formats. LEDs indicate the re­ceived framing format in each path. The unit accommodatesAMI line coding using B3ZS format. The unit responds to spe­cific code patterns to activate various features of the unit.Detection of these codes functions reliably with a bit‐error rateof 10‐3 or less on the facility.

3.4 Loss of Signal Detection

DS3 signals from the Network are continuously monitored forLOS and control codes. If a loss of signal is detected, the front‐panel NET LOS LED illuminates red and an Alarm IndicationSignal (AIS) is sent to the CPE. See Figure 6.

ATTEN

CT1

CT

T

LOS

T1

FROMNETWORK

TO CPE

FROM CPETO

NETWORK

NETTO

CPE

MICROPROCESSOR

CONTROL LOGIC

CRAFT PORT(RS-232)

LPBK NET

+PWR

-PWR

CHASSIS GND

AC2

POWERSUPPLY

PWR

CPETO

NET

MANLPBK

SIDE 2

SIDE 1

AC1

XX

(green=PWR) (red=Alarm)

NET SIGNALDETECTOR

(yellow=AIS)(red=LOS)

(yellow=AIS)(red=LOS)

C-BIT

M13

CPE

ALM

AIS

LOS

AIS

NET

CPE

REGEN

REGEN

CPE SIGNALDETECTOR

NETLPBK

NETLPBK

Figure 5. 522‐10I3 Block Diagram ‐ Transmission Paths During Normal Operation

Section 522‐100‐203 030‐100647 Rev. A �

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NETWORK CPE

AIS

CPE

CBIT

NET

LOS=REDM13

LPBK

PWR/STATUS

AIS=YEL

Figure 6. Network Loss Of Signal

NETWORK CPE

CPE

CBIT

NET

LOS=REDM13

LPBK

PWR/STATUS

AIS=YEL

AIS, IDLE,Code, or

Pass Thru

Figure 7. CPE Loss Of Signal ID

DS3 signals from the CPE are continuously monitored for lossof signal. If a loss of signal is detected, the front‐panel CPELOS LED lights.

In addition, the unit can be configured to send a CPE Loss OfSignal (CLOS) ID or pass the LOS onto the Network wheneverthe unit detects a loss of signal from the CPE.

3.5 CPE Loss Of Signal (CLOS) ID

Upon detecting signal loss from the CPE, the unit can send anAIS (continuous 1010), an idle signal (continuous 1100) orpassthru toward the network (see Figure 7). The ID type is se­lected through the menu‐based Craft Port. When the signal isrestored, the ID signal stops being generated and the unit re­turns to normal operation. Definitions of AIS and IDLEsignals are shown in Table 1. The CLOS ID feature can be re­motely disabled for a 20‐minute period by sending a loopdownFar‐End Alarm and Control (FEAC) message to the unit.

M Bits Normal

F Bits Normal

P Bits Normal

C Bits 0

Figure 8. Option/Feature Locations

522‐10I3

X Bits 1

Payload “1010” Pattern (AIS)

Payload “1100” Pattern (IDLE)

Table 1. AIS/IDLE Definitions

4. OPTIONS & FRONT PANEL FEATURES

The 522‐10I3 contains features and switch options located onthe front and side (PCB) panels, as shown in Figure 8 and as de­scribed in the paragraphs that follow.

‐ NOTE ‐

Set any/all manual option switches prior to installing the unit.

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4.1 Front Panel Features

4.1.1 Monitoring Jacks

The unit is equipped with two front panel DC‐isolated 440A‐type monitor jacks labeled XMT MON and RCV MON. RCVMON allows for monitoring signals in the Network‐to‐CPEpath. XMT MON allows for monitoring signals in the CPE‐to‐Network path. Both jacks provide the proper termination re­sistance. These jacks are labeled CPE to NET and NET toCPE, as shown in Figure 8.

4.1.2 Front Panel Status LEDs

NET and CPE C‐BIT: If these LEDs are illuminated, theunit is synchronized to the C‐Bit framing format.

NET and CPE M13: If these LEDs are illuminated theunit is synchronized to M13 framing format.

‐ NOTE ‐

A more detailed explanation of the framing LEDs can be foundin Section 7.2.9.

If LEDs are flashing green, the unit is receiving unframeddata.

NET LOS/AIS: Network signal status. When this LED isilluminated yellow, the unit is receiving AIS from theNetwork. When this LED is illuminated red, the unit isdetecting a LOS from the Network.

CPE LOS/AIS: When this LED is lit yellow, the unit isreceiving AIS from the Customer. When the LED illumi­nates red, the unit is detecting a LOS from the CPE.When this LED is flashing red, the unit is generating aCLOS ID signal toward the network.

PWR/STATUS: Indicates the power and alarm status ofthe unit. The LED illuminates green (ON) when power isapplied to the unit or OFF if power is not applied.

The LED illuminants red to indicate a fuse‐alarm condi­tion (i.e., on‐board fuse is open). A fuse‐alarm conditionalso activates a relay closure on the mounting assembly.

LPBK: When this LED illuminates yellow, the unit is inNetwork Loopback. When LED is flashing yellow, theunit is in Dual Loopback mode. When the LED is flash­ing green, the unit is armed in the Inband Loopbackmode.

4.1.3 Craft Interface Port (RS‐232)

The front‐panel RS‐232 Craft Port allows local access to per­formance functions and locally provisioning the unit. SeeSection 6 for details.

4.1.4 LPBK Push‐Button Switch

The 522‐10I3 provides a front‐panel Manual Loopback push‐button switch that allows for manual activation/deactivation ofthe Loopback circuit. See Section 8 for details.

5. INSTALLATION

Installation consists of inspecting the equipment for damage,following proper safety precautions, mounting the 522‐10I3 in

a Westell DBMA200‐XX mounting, verifying the presence ofpower and signalling as indicated by the status LEDs (see Sec­tion 4.1). The following paragraphs provide detailedinstructions for performing these procedures.

‐ INSPECTION NOTE ‐

Visually inspect the product for damages prior to installation. Ifdamaged in transit, immediately report the damage to the transporta­tion company and to Westell.

CAUTION ‐ STATIC‐SENSITIVE

This product contains static‐sensitive components! Properelectrostatic discharge procedures must be followed tomaintain personal and equipment safety. Do not store unitsnear magnetic, electromagnetic or electrostatic fields. Alwaysstore or ship units in the original static‐protective packagingfrom Westell. Use anti‐static mats when working on units.

‐ PRECAUTIONARY STATEMENT ‐

Never install telephone wiring during a lightning storm.

Never install telephone jacks in wet locations unless the jackis specifically designed for wet locations.

Never touch uninsulated telephone wires or terminals unlessthe telephone line has been disconnected at the networkinterface.

Use caution when installing or modifying telephone lines.

This equipment is intended to be used behind devices thatprovide primary lightning protection.

This equipment is to be installed in a restricted accesslocation.

5.1 Powering Considerations

Each shelf is powered from either a +24Vdc or a ‐48Vdc powersource. The mounting also provides an alarm output for exter­nal reporting of a local power alarm condition. Connectionsare provided on each shelf for a back‐up or redundant powersource. The NIU and the mountings are designed for hot inser­tion and removal, meaning the shelf can be powered wheninserting or removing circuit cards. Westell mountings alsoprovide metallic cut‐thru of the XMT and RCV transmissionpaths when the card is removed.

5.2 Mounting the Module

The 522‐10I3 is a DS3‐200 MECHANICS NIU (1/2 width of400 mechanics but with a 40‐pin connector) plug‐in modulethat mounts in a DBMA200‐XX mounting assembly. The mod­ule is designed for use on the network side of the circuit. Beforeinstalling the module, set any option switch(es) to the desiredposition(s). Align the module with the mounting or assemblycard guides above and below the unit and insert as far as it willgo into the slot connector.

‐ CAUTION ‐

Use care when installing and removing modules ‐ do not forcea module into place. If a module resists insertion, remove itand check for obstructions in or near the module's or shelf'sconnectors and mounting slots. The module may then becarefully aligned and gently re‐inserted.

Section 522‐100‐203 030‐100647 Rev. A �

61011I3RA

1

2

3

4

5

6

7

8

9

TxD (Transmit Data-OUT)

RxD (Receive Data-IN)

SGN (Signal Ground)

DTR (Data Terminal Ready)

Figure 9. Front‐Panel RS‐232 (DB9)

5.3 Making Installer Connections

The unit makes electrical connection when installed and prop­erly seated in the 40‐pin card‐edge connector of the mountingassembly and connected to the DS3 connectors on the frontpanel. No installer connections are required for the IOR otherthan inserting the module into the card‐edge connector in theshelf or assembly and making the DS3 connections.

6. CRAFT PORT SETUP AND OPERATION

6.1 Craft Port

The Craft Port is a DB‐9 connector with an electrical RS‐232female interface in a DCE configuration. The device used to in­terface the Craft Port can be a terminal operating in the VT‐100protocol or a PC running a VT‐100 emulation program. If aVT‐100‐type terminal is used, a null‐modem cable may be re­quired between the terminal and the NIU. If a PC with aVT‐100 emulation program is used, such as HyperTerminal orProComm, a standard RS‐232 cable can be used.

The RS‐232 port should be set up as follows:

� 9600 baud

� flow control set to None

� 8 data bits

� no parity

� one stop bit

� Select emulation as VT‐100

Electrical connections to the RS‐232 Craft Port are shown inFigure 9.

6.2 Password and Main Menu Screen

Once connected, a Password menu screen may appear. The useof a password is optional and the Password screen only appearsif a password is used. The default password=0000=none. Thepassword can be changed through the Provisioning Menuscreen and is case sensitive.

There is also an emergency password that may be used if theuser password is forgotten or mistyped. The emergency pass­word is “LOSTIT”. This password is only usable if the unit is

***** Westell ********** NIU DS3 MAIN MENU ********** BroadTerm(tm) Model 522-10I3 ********** MAIN OPTION MENU *****

(ESC).RETURNS TO MAIN OPTION MENU

1. CIRCUIT Information, Date, Time Menu

2. PROVISION Options

3. CIRCUIT Status

4. PATTERN Testing

5. CURRENT Performance Statistics

6. NETWORK Performance History

7. CUSTOMER Performance History

8. EVENT Log

9. ALARM Log

10. CLEAR Performance History Memory

11. DOWNLOAD PM Data/Event Log/Alarm Log

12. CONTACT Information

Enter NUMBER for Menu Selection: __

Figure 10. Main Menu Screen

***** Westell *****

***** CIRCUIT INFORMATION MENU *****

CLEI: NCIPCJ0DAA

Current New

Current Date: 11/05/2007 1) / / (MM/DD/YYYY)

Current Time: 13:55 2) : (HH:MM) Military Time

Circuit I.D.: 3){UNIT 4 }

Installation Date: 9/22/2007 4) / / (MM/DD/YYY)

Notepad: 5){ } { }

{ } { }

{ } { }

{ } { }

{ } { }

Enter NUMBER to change entryPRESS *** Esc *** to return to MAIN MENU

Figure 11. Circuit Information Screen

password protected. If no password has been used, the Pass­word menu is never displayed.

Upon entering the password, the Main Menu, shown inFigure 10, is displayed and the craftsperson can then select theappropriate item from the menu.

7. PROVISIONING

Provisioning for the unit is accomplished locally via the menu‐based software provisioning or remotely via TL1 commands.The local menu system is accessed via the front‐panel DB‐9Craft port connector.

7.1 Circuit Information Screen

The Circuit Information screen, shown in Figure 11, allows thecraftsperson to enter and review date, time and general circuitdetails.

‐ NOTE ‐

Enter circuit information for correct time and date stamping.

7.2 Provisioning Menu Screen

The Provisioning Menu screen, shown in Figure 12, allows thecraftsperson to establish settings for the various options. Sim­ply enter the letter of the setting to be provisioned. In addition,the settings may be saved as a custom default when required.The following options can be provisioned:

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71011I3RA

‐ NOTE ‐

Default values for the options are identified in bold and italic type.

� CLOS ID: AIS, Idle, QRSS or Passthru

� Remote LPBK Time‐out: Enable/Disable

� Manual LPBK Time‐out: Enable/Disable

� Time‐out Duration: 20m/60m/120m/24hr

� LOOPBACK: Network or Dual

� MLB Button: Enable/Disable

� PM Threshold: 10‐6, 7.5x10‐5

� NPRM Mode: Enable/Disable

� NET Frame Detect: Auto, C‐Bit, M13

� CPE Frame Detect: Auto, C‐Bit, M13

� Inband Loopback: Enable/Disable

� TX Level to Customer: Normal/Low

� Return Factory Default Settings

7.2.1 CPE Loss Of Signal ID Selection (CLOS ID)

The Customer LOS Identifier LED (CLOS ID), is set to re­spond to a loss‐of‐signal condition from the CPE side of theunit. The unit can be provisioned to send AIS, QRSS or IDLEcode, or can be provisioned for the pass‐through mode wherethe LOS condition is passed on toward the Network.

7.2.2 Remote Loopback Time‐out

Remote Loopback Time‐out can be set to either enable or dis­able the timeout feature for remotely activated loopback.

7.2.3 Manual Loopback Time‐out

Manual Loopback Time‐out can be set to either enable or dis­able the 20/60/120‐minute and 24‐hour feature for manuallyactivated loopback.

***** Westell ********** PROVISION OPTIONS *****

Current New

CLOS ID Selection Idle 1) Passthru 2) QRSS3) AIS

Remote Lpbk Time-out Enable 4) Disable

Manual Lpbk Time-out Enable 5) Disable

Time-out Duration 120 Min 6) 20 Min 7) 60 Min8) 24 Hour

Manual Loopback Type Network 9) Dual

MLB Button Enable 10) Disable

PM Threshold Setting 10 -6 11) 7.5x10-5

NPRM Mode Enable 12) Disable

NET Frame Detect C-Bit 13) Auto 14) M13

CPE Frame Detect C-Bit 15) Auto 16) M13

FEAC Loopback Code X 17) FF48H 1111 1111 0100 1000 (STD)18) FF20H 1111 1111 0010 000019) FF68H 1111 1111 0110 1000

Change Password 20)Inband Loopback Enable 21) DisableTX Level to Customer Normal 22) LowFactory Default Settings 23)

PRESS *** Esc *** for MAIN MENU Enter NUMBER to change settings:

Figure 12. Provision Options Menu Screen

7.2.4 Time‐out Duration

Time‐out Duration allows the craftsperson to select the dura­tion of the loopback timeout if enabled. The choices are20/60/120‐minute and 24‐hour.

7.2.5 Manual Loopback Type

Manual Loopback Type allows the craftsperson to choose ei­ther Network or Dual loopback to be controlled from the frontpanel pushbutton.

7.2.6 MLB Button

Manual Loopback control from the front‐panel LPBK pushbutton can be enabled or disabled through the Provisioningmenu. Refer to Section 10 for additional manual loopback de­tails.

7.2.7 PM Threshold Settings

A threshold setting of either 10‐6 or 7.5x 10‐5 defines the pointat which Severely Errored Seconds (SES) are declared.

7.2.8 NPRM Mode

Insertion of Network Performance Report Messages(NPRMs) by the unit into the DS3 overhead for remote PM re­trieval can be enabled or disabled.

7.2.9 Framing Detection Option (C‐Bit or M13)

The unit can be configured to monitor specific framing pat­terns (C‐Bit or M13) and provide a flashing LED indication ifa mismatch or Loss Of Frame (LOF) condition occurs. Alter­nately, framing detection can be set for Auto mode in whichboth framing types are monitored and indicated via front‐panelLEDs. This option can be set for Network and CPE framing in­dependently.

� When AUTO mode is selected via the Provisioningscreen:

If C‐Bit framing is received, CBIT LED is ON, M13 LEDis OFF.

If M13 framing is received, M13 LED is ON, CBIT LEDis OFF.

If no framing is received, both the M13 and the CBITLEDs flash.

� When C‐Bit mode is selected via the Provisioningscreen:

If C‐Bit framing is received, CBIT LED is ON, M13 LEDis OFF.

If M13 framing is received, M13 LED flashes and CBITLED is OFF, indicating a framing mismatch.

If no framing is received, both the M13 and the CBITLEDs flash.

� When M13 mode is selected via the Provisioning screen:

If M13 framing is received, the M13 LED is ON, theCBIT LED is OFF.

If C‐Bit framing is received, CBIT LED flashes and M13LED is OFF, indicating a framing mismatch.

Section 522‐100‐203 030‐100647 Rev. A �

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If no framing is received, both the M13 and the CBITLEDs flash.

7.2.10 FEAC Loopback Codes

One of three FEAC codes can be selected to remotely activatethe Loopback function. See Section 8 for additional details.

7.2.11 Inband Loopback

Inband Loopback allows the craftsperson to enable or disablethe inband detection of loopback codes.

7.2.12 TX Level to Customer

The transmit level to the customer allows the craftsperson toset the level to the customer to either a normal or a low level.The low setting attenuates the signal by approximately 6dB.

7.2.13 Factory Defaults

This option resets all provisioning values to the original factorysettings.

7.2.14 Remote Provisioning

Most options may be remotely set via TL1 commands. Refer toSection 11.

8. LOOPBACK

Loopback is used during maintenance and circuit trouble­shooting to verify the integrity of the DS3 facility. Testing canbe performed with a standard DS3 test set or test head con­forming to ANSI interface specifications. Two types ofloopback conditions are supported on this unit; Network andDual.

� Network loopback takes the signal from the networkand loops it through the unit back towards the network(See Figure 13). The unit loops back the signal at themetallic CPE interface to ensure that all components ofthe NIU are included in the path.

‐ NOTE ‐

In this loopback mode, the CPE signal is terminated.

NETWORK CPE

LPBK

PWR/STATUS

X

CPE

CBIT

NET

LOS=REDM13

AIS=YEL

X

Figure 13. Network Loopback

NETWORK CPE

CPE

CBIT

NET

LOS=REDM13

LPBK

PWR/STATUS

AIS=YEL

LPBK LED flashesduring Dual Loopback

Figure 14. Dual Loopback

� Dual loopback takes the signal from the network andloops it back (logic loopback) towards the network. Atthe same time, signal received from the CPE port islooped back towards the CPE (Refer to Figure 14).

8.1 Loopback Activation/Deactivation

Loopback activation/deactivation can be accomplished in oneof two ways:

1. Remotely via control codes from a test location

2. Locally via the front‐panel LPBK (Manual Loopback)push‐button switch or menu‐based Craft Port. The Provi­sioning menu also allows the front‐panel LPBK switch tobe disabled.

In network loopback, the LPBK LED illuminates and the CPEsignal is terminated. In the dual loopback mode, the LPBKLED flashes.

8.2 Remote Loopback Operation ‐ FEAC Codes

When using C‐Bit parity framing, the Network Service Provid­er can use the FEAC codes to send loop‐up and loop‐downcodes to the unit. FEAC codes are sent through an embeddedcommunication channel within the C‐Bit framing. The unit re­sponds to 10 consecutive repetitions of the FEAC code toactivate or deactivate network loopback (see Table 2). After re­moving the Loopback Activate Code for a minimum of 5seconds, the code can be reapplied to remotely activate a dualloopback condition.

LoopbackActivate

1111 1111 0100 1000 sent >10 repetitions

LoopbackDeactivate

1111 1111 0010 0100 sent >10 repetitions

Table 2. Standard Loopback FEAC Codes

‐ NOTE ‐

When loopback is activated, a 20, 60 or 120‐minute or the 24‐hourLoopback Time‐out feature is also activated, if enabled. Loopbackautomatically times out and the unit returns to normal operation af­ter the selected time frame, unless the unit receives a loop‐down codeor if loopback is manually removed.

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91011I3RA

8.3 Programmable Loopback FEAC Codes

The FEAC code used for loopback activation can be user‐pro­grammed via the Craft Port. The allowable codes are shown inTable 3. Provisioning for an alternate loopback activation codeis useful when units are used in tandem on a circuit, allowingeach unit to be looped back individually. See the Provision Op­tions Menu screen, Figure 12.

FF48H 1111 1111 0100 1000 (Standard)

FF20H 1111 1111 0010 0000 (Alt #1)

FF68H 1111 1111 0110 1000 (Alt #2)

Table 3. User Programmable FEAC Loopback Activation

Codes

8.4 Remote Loopback Operation ‐ In‐Band

In‐band Loopback is supported in both C‐Bit and M13 framingmodes. The In‐Band Loopback procedure is a two step pro­cess. The unit is armed by sending a 7‐bit pattern (1011100)within the DS‐3 payload blocks for at least five seconds. Whenthe arming signal is received for five seconds, the NIU beginsa 20 second timeout period. During this timeout period, if theNIU detects a 16‐bit loopback signal (1101 0011 1101 0011),the unit switches to the loopback state. If the loopback signalis not detected within a 20‐second period, the NIU returns tonormal (unarmed) operation. To deactivate loopback, a 7‐bitdeactivation code (1110110) is sent to the NIU.

8.4.1 Manual Loopback Activation

Manual Loopback activation is accomplished by pressing andreleasing the front‐panel LPBK push‐button switch. It can alsobe activated via the Craft Port. When the LPBK switch ispressed and released, the LPBK LED illuminates, indicatingloopback activation. Manual loopback type (Network or Dual)is selected via the Craft Port and the Provisioning Menu. TheProvisioning Menu also allows the front‐panel LPBK switch tobe disabled.

8.4.2 Manual Loopback Deactivation

In the Network or Dual Loopback mode, press and release thefront‐panel LPBK switch a second time to loopdown the unit.Manual loopback can also be deactivated via the Craft Port orby sending the Loopback Deactivation code from the Networkside.

8.5 Loopback Time‐out

The unit features a timeout option that can be set to automati­cally release the unit from loopback after 20, 60 or 120 minutesor 24 hours. After the selected time out period expires, the unitreturns to normal operation. The Loopback Time‐out featurecan be either enabled or disabled for both remote and manualloopback independently via local provisioning. The LoopbackTime‐out feature can also be temporarily disabled remotely bysending the code 1111 1111 0100 0000 (FF40h). The LoopbackTime‐out feature returns to its previous setting upon loopbackdeactivation.

9. DS3 TEST PATTERN GENERATOR

9.1 Pattern Testing Screen

The Pattern Testing screen, shown in Figure 15, allows stresspatterns to be sent by the NIU toward either the network or theCPE. In addition, the NIU monitors return signals and displaysthe measured bit error rate on the screen. This screen is acces­sible from the Main screen by selecting “4”, Pattern Testing.Exiting the pattern test screen will abort the test.

***** Westell *****

***** PATTERN TESTING *****

1. Send Pattern to Network

2. Deactivate Pattern to Network

3. Send Pattern to Customer

4. Deactivate Pattern to Customer

5. Framing for Pattern C-BIT

6. Timing Source for Pattern NTWK

7. Insert Bit Error

8. Reset Pattern Error Counters

9. Pattern Selection: 2^23-1

PRESS *** Esc *** to return to MAIN MENU

>

<

>

<

CPENET

+05.0dBdsxNIU3

Pattern

Errors Sync

Network 0000000 NOCustomer 0000000 NO

Selection:

Figure 15. Pattern Testing Screen

To send a pattern to the network, select “1” from the PatternTesting screen using the Craft Port. Verify receipt of the testpattern using a test set or the built‐in error counter. To deacti­vate the pattern, select “2” or “B”.

To send a pattern to the CPE, select “3” from the Pattern Testscreen. Verify receipt of the test pattern using a test set or thebuilt‐in error counter. To deactivate the pattern, select “4” or“D”.

To change the framing for the pattern, select “5”. The availablechoices are “C‐BIT”, “Unframed” and “M13”, as shown inFigure 16.

***** Westell *****

***** DS3 PATTERN SELECTING SCREEN *****

***** Model 522-10 I3 *****

1. CBIT2. M133. UNFRAME

PRESS *** Esc *** to return to previous screenEnter Selection:

Figure 16. DS3 Pattern Framing Screen

To select a timing source for the pattern, select “6”. The avail­able choices are “NTWK” and “LOCAL”, as shown inFigure 17.

***** Westell *****

***** DS3 TIMER SELECTING SCREEN *****

***** Model 522-10 I3 *****

1. LOCAL2. NETWORK

PRESS *** Esc *** to return to previous screenEnter Selection:

Figure 17. DS3 Timer Selecting Screen

Section 522‐100‐203 030‐100647 Rev. A �

101011I3RA

‐ NOTE ‐

The “LOCAL” setting is only used for testing purposes. Make surethat the timing source is set to “NETWORK” for normal operation.

To insert a bit error into the pattern, select “7” from the PatternTest screen.

To reset the pattern counters, select “8” from the Pattern Testscreen.

In order to select a different pattern for testing, select “9” fromthe Pattern Test screen. This displays the DS3 Pattern SelectingScreen, shown in Figure 18.

***** Westell *****

***** DS3 PATTERN SELECTING SCREEN *****

***** Model 522-10 I3 *****

1. 2^23-12. QRSS3. BLUE4. IDLE5. USER6. ARM (1011100)7. Loopback (1101 0011 1101 0011)8. DISARM (1110110)

PRESS *** Esc *** to return to previous screenEnter Selection:

Figure 18. DS3 Pattern Selecting Screen

9.2 Using Pattern Testing to Loopback Far EndUnit

The following procedure is employed when the pattern genera­tor is used to loopback a far end unit. Refer to Figure 19 andTable 4.

1. From the Main Menu, select “4”, Pattern Testing.

2. From the Pattern Testing Menu, select “9”, Pattern Selec­tion.

3. In the Pattern Selection Menu, select “6”, ARM(1011100).

‐ NOTE ‐

Once the ARM pattern is selected, the screen will return to the PatternTesting Menu.

4. To ARM the remote unit on the Network Side, select “1”,Send Pattern to Network. To ARM the remote unit on theCustomer Side, select “3”, Send Pattern to Customer.

5. The Pattern Testing menu will now show ARM beingtransmitted in the direction chosen in Step 4. Allow pat­tern to be sent for approximately five seconds beforemoving on to the next step.

Inband Test Codes Description

0010 1110 0010 0011 (2E23h) 2^23‐1

1101 0111 0100 0010 (D742h) Idle

1101 0111 0100 0001 (D741h) Blue

0010 1110 0010 0000 (2E20h) QRSS

1101 0111 0100 0011 (D743h) User Defined

Table 4. Remote Pattern Generator

6. Select “9”, Pattern Selection, then select “7” in the Pat­tern Selection Menu, LPBK (1101 0011 1101 0011).

‐ NOTE ‐

Once the LPBK pattern is selected, the screen will return to the Pat­tern Testing Menu. The Pattern Testing Menu will now show LPBKbeing transmitted in the direction selected. After a few seconds, theSYNC indicator will show “YES”. This means the remote unit haslooped back.

7. Select “9”, Pattern Selection, then select either “1”,2^23‐1 or “2”, QRSS, in the Pattern Selection Menu.

With the far end unit now looped back, round trip pattern test­ing can be performed.

Once the pattern is selected, the screen will return to the Pat­tern Testing Menu, and show the selected pattern being senttoward the looped back far end unit. The SYNC indicatorshould be showing “YES”, and the error counter is tracking bit‐errors. The error counter is reset by selecting “8”, Reset Pat­tern Error Counters.

9.3 Loopdown Procedure

The following procedure is used to remove loopback from thefar end unit.

1. To loopdown the far end unit, select “9”, Pattern SelectionMenu. In the Pattern Selection Menu, select “8”, DIS­ARM (1110110).

‐ NOTE ‐

Once DISARM is selected, the screen will return to the Pattern Test­ing Menu, and show DARM being sent to the remote unit. TheSYNC indicator will change to “NO”, signifying that the far end unithas looped down.

2. To turn off the pattern generator on the Network Side, se­lect “2”, Deactivate Pattern to the Network. To turn off thepattern generator on the Customer Side, select “4”, Deac­tivate Pattern to the Customer.

3. Press ESC to return to the Main Menu.

4. To turn off the pattern generator on the Network Side, se­lect “2”, Deactivate Pattern to the Network. To turn off thepattern generator on the Customer Side, select “4”, Deac­tivate Pattern to the Customer.

5. Press ESC to return to the Main Menu.

10. PERFORMANCE MONITORING

The 522‐10I3 continuously monitors and records the perfor­mance of DS3 service in the transmit and receive directions.Circuit status and performance history are retrievable from theCraft Interface of the NIU. Performance history is also re­ported remotely via ANSI‐standard messages in the overheadchannel. In addition, performance data can be accessedthrough TL1 commands. Refer to Section 11 for details.

10.1 Circuit Status

The 522‐10I3 provides a Circuit Status screen that summarizescurrent transmission conditions, see Figure 20. The Circuit

Section 522‐100‐203030‐100647 Rev. A�

111011I3RA

522−10I3CPE A CPE ZLoopback Controls and Test Patterns

Figure 19. Far End Loopback using Internal DS3 Pattern Test Generator

522−10I3

Status screen includes a measurement of the DS3 signalstrength being received from the Network and CPE sides.

***** Westell ********** CIRCUIT STATUS *****BroadTerm (tm) 522-10 I3 DS3 NIU

PRESS “L” to toggle LoopbackPRESS *** Esc *** to return to MAIN MENU

<

>

<

>RCV from Network+05.0 dBdsx

Framing: C−Bit ParityRCV Alarm: None

XMT to CPE

Framing: C−Bit ParityRCV Alarm: None

−00.0 dBdsxRCV from CPE

Loopback Timeout:

XMT to Network

Circuit I.D.: UNIT 4Installation Date: 11/22/2007

Figure 20. Typical Circuit Status During Normal Operation

10.2 Performance Primitives

Performance primitives are events that provide the founda­tions to store performance of the DS3 service. Primitives aresingle events that may be grouped to provide the building blockfor creating performance parameters. The categories underthe performance primitives are shown in Table 5.

Line AnomaliesBipolar ViolationsExcessive Zeros

BPVsEXZs

Line Defects and FailuresLoss of Signal LOS

Path AnomaliesC‐Bit Parity Error CBPR

Path Defects and FailuresOut of FrameSeverely Errored FrameAlarm Indication SignalRemote Alarm Indication

OOFSEFAISRAI

Table 5. Performance Primitives

10.3 Performance Parameters

Performance parameters are comprised of single or groupedperformance primitives. Performance parameters are stored innon‐volatile memory for retrieval. The categories for perfor­mance parameters are shown in Table 6.

Line ParametersErrored SecondsSeverely Errored SecondsUnavailable SecondsCode ViolationLoss of Signal Seconds

ESSESUASCVLOSS

Path ParametersErrored SecondsSeverely Errored SecondsUnavailable SecondsCode Violation, P‐bitCode Violation, CP‐bitErrored Second, P‐bitErrored Second, CP‐bitSeverely Errored Second, CP‐bit

ESSESUASCVPCVCPESPESCPSESCP

Far End ParametersCode Violation, CP‐bitErrored Second, CP‐bitSeverely Errored Second, P‐bitUnavailable Second, CP‐bit

CVCPESCPSESPUASCP

Other ParametersSeverely Errored Frame SecondsFar End Bit ErrorsSeverely Errored Frame/Alarm Indication Signal (SEF/AIS) SecondAlarm Indication Signal Seconds

SEFSFEBE

SASAISS

Table 6. Performance Parameters

10.4 Performance Storage Registers

Performance Storage Registers provide historical informationpertaining to the Network and Customer DS3 service. The522‐10I3 records this information in 15‐minute, 1 hour, dailyand monthly intervals up to three months (see Table 7) andstores this information in memory for later retrieval. Access tothis information is accomplished via the Craft Port. Examplescreens are shown in Figure 21 to Figure 27.

Classification Status Previous

15 Minutes Current 100 Intervals

1 Hour Current 60 Intervals

1 Day Current 31 Intervals

1 Month Current 3 Intervals

Table 7. Performance Storage Information

Section 522‐100‐203 030‐100647 Rev. A �

121011I3RA

***** Westell ********** CURRENT PERFORMANCE STATISTICS *****

Current Performance Menu

1. Current Summary Performance Statistics2. Current Expanded Performance Statistics3. Current Path Far End (PFE) Performance Statistics

Enter NUMBER for Menu Selection

Press *** Esc *** to return to MAIN MENU

Figure 21. Network Performance History Menu

***** Westell ********** CURRENT SUMMARY PERFORMANCE STATISTICS *****

Date: 02/05/2007 Time: 23:56

LINE PATH

DATE TIME ES SES UAS ES SES UAS SEFS FEBE MSEC02/05/2007 23:15 Current 15 Minute Interval 511

Network 000 000 511 000 000 511 511 000

Customer 000 000 511 000 000 511 511 00002/05/2007 23:14 Current 1 Hour Interval 0559

Network 0000 0000 0559 0000 0000 0559 0559 0000

Customer 0000 0000 0559 0000 0000 0559 0559 000002/05/2007 23:14 Current 1 Day Interval 00559

Network 00000 00000 00559 00000 00000 00559 00559 00000

Customer 00000 00000 00559 00000 00000 00559 00559 0000002/05/2007 23:14 Current 30 Day Interval 0000559

Network 00000 00000 00559 00000 00000 00559 00559 00000

Customer 00000 00000 00559 00000 00000 00559 00559 00000

PRESS *** Esc *** to return to CURRENT P.M. MENU

Figure 22. Current Summary Performance Statistics Screen

***** Westell *****

***** CURRENT EXPANDED PERFORMANCE STATISTICS *****Date: 02/05/2007 Time: 23:56

LINE PATH

DATE TIME CV LOSS CVP CVCP ESP ESCP SESCP SAS AISS02/05/2007 23:15 Current 15 Minute Interval

Network 65535 000 00000 00000 000 000 000 637 000

Customer 65535 000 00000 00000 000 000 000 637 00002/05/2007 23:14 Current 1 Hour Interval

Network 65535 0000 00000 00000 0000 0000 0000 0685 0000

Customer 65535 0000 00000 00000 0000 0000 0000 0685 000002/05/2007 23:14 Current 1 Day Interval

Network 1048575 00000 0000000 0000000 00000 00000 00000 00685 00000

Customer 1048575 00000 0000000 0000000 00000 00000 00000 00685 0000002/05/2007 23:14 Current 30 Day Interval

Network 1048575 00000 0000000 0000000 00000 00000 00000 00685 00000

Customer 1048575 00000 0000000 0000000 00000 00000 00000 00685 00000

PRESS *** Esc *** to return to CURRENT P.M. MENU

Figure 23. Current Expanded Performance Statistics

***** Westell *****

CURRENT PATH FAR END (PFE) PERFORMANCE STATISTICS

Date: 02/05/2007 Time: 23:56

PATH FAR END

DATE TIME CVCP ESCP SESCP UASCP02/05/2007 23:15 Current 15 Minute Interval

Network 00000 000 000 000

Customer 00000 000 000 00002/05/2007 23:14 Current 1 Hour Interval

Network 00000 000 000 000

Customer 00000 0000 0000 000002/05/2007 23:14 Current 1 Day Interval

Network 00000 00000 00000 00000

Customer 00000 00000 00000 0000002/05/2007 23:14 Current 30 Day Interval

Network 00000 00000 00000 00000

Customer 00000 00000 00000 00000

PRESS *** Esc *** to return to CURRENT P.M. MENU

Figure 24. Current Path Far End Performance Statistics

***** Westell *****

***** NETWORK PERFORMANCE STATISTICS *****

Summary Performance History

1. Previous 100, 15 Minute Intervals2. Previous 60, 1 Hour Intervals3. Previous 31, 1 Day Intervals4. Previous 3, 30 Day Intervals

Expanded Performance History

5. Previous 100, 15 Minute Intervals6. Previous 60, 1 Hour Intervals7. Previous 31, 1 Day Intervals8. Previous 3, 30 Day Intervals

Summary Performance History

9. Previous 100, 15 Minute Intervals10. Previous 60, 1 Hour Intervals11. Previous 31, 1 Day Intervals12. Previous 3, 30 Day Intervals

Enter NUMBER for Menu SelectionPRESS *** Esc *** to return to MAIN MENU

Figure 25. Network Performance History Menu

***** Westell *****

***** NETWORK SUMMARY PERFORMANCE HISTORY *****

Date: 02/05/2007 Time: 18:28

Previous 100, 15 Minute Intervals

LINE PATH

DATE TIME ES SES UAS ES SES UAS SEFS FEBE02/05/2007 18:00 000 000 900 000 000 000 000 00002/05/2007 17:59 010 010 024 000 000 000 000 00002/05/2007 00:00 003 003 000 001 000 000 000 000

Page 1 of 9PRESS “P” for previous screenPRESS “N” for next screenPRESS *** Esc *** to return to HISTORY MENU

Figure 26. Typical Network Summary Performance History

Screen

***** Westell *****

***** CLEAR PERFORMANCE HISTORY MEMORY *****

1. Clear Performance Memory

2. Clear Event/Alarm Log

3. Clear All

***** Enter NUMBER for Menu Selection *****

PRESS *** Esc *** to return to MAIN MENU

Figure 27. Clear Performance History Menu

10.5 Remote NPRM Retrieval

The NIU may be provisioned to send Network PerformanceReport Messages (NPRM) for retrieval through remote test ormonitoring systems. Messages are sent for the following inter­vals through the DS3 overhead channel as specified in ANSIT1.404.

� Current 15 minutes

� Previous 15 minutes

� Current 24 hours

� Previous 24 hours

10.6 Event and Alarm Log Screens

The Event and Alarm Log screens, shown in Figure 28 toFigure 31, provides the craftsperson with detailed logs for theunit. It also allows the craftsperson to clear the log and contin­ue logging new events. The Event Log has a capacity of 8 pageswith 25 events per page, for a total of 200 events displayed. TheAlarm log has a capacity of 8 pages with 25 alarms per page, fora total of 200 alarms displayed.

Section 522‐100‐203030‐100647 Rev. A�

131011I3RA

The alarms that are logged are shown in the following list:

Network LossCPE LossNET Signal RestoredCPE Signal RestoredRcvd AIS from NETRcvd AIS from CPERcvd RAI from NETRcvd RAI from CPENET Indicator ClearedCPE Indicator ClearedRcvd Idle from NETRcvd Idle from CPENET LOF DetectedCPE LOF DetectedNET LOF ClearedCPE LOF Cleared

The events that are logged are shown in the following list:

Remote NET LoopbackLocal NET LoopbackRemote LoopdownLocal LoopdownLoss of PowerPower RestoredPMON Register ResetEvent/Alarm Log ResetDate/Time Changed FromCircuit Info. ChangeProvision ChangedCPE Loss OverrideRemote Dual LoopbackLocal Dual LoopbackDate/Time Changed ToPassword Changed

***** Westell *****

***** EVENT LOG *****

Date: 12/05/2007 Time: 14:13

DATE TIME EVENT DATE TIME EVENT11/05/2007 13:35 POWER RESTORED11/05/2007 13:35 LOSS OF POWER11/05/2007 13:45 POWER RESTORED11/05/2007 13:45 LOSS OF POWER11/05/2007 11:01 PMON REGISTER RESET11/05/2007 11:01 EVENT/ALARM LOG RESET

PRESS “P” for previous screenPRESS “N” for next screenPRESS *** Esc *** to return to MAIN MENU

Figure 28. Typical Event Log Screen

***** Westell *****

***** ALARM LOG *****

Date: 12/05/2007 Time: 14:13

DATE TIME EVENT DATE TIME EVENT12/05/2007 12:52 LOS

Page 1 of 8

PRESS “P” for previous screenPRESS “N” for next screenPRESS *** Esc *** to return to MAIN MENU

Figure 29. Typical Alarm Log Screen

***** Westell *****

***** DOWNLOAD PM DATA / EVENT LOG / ALARM LOG *****

1. Download Performance Data History

2. Download Event Log

3. Download Alarm Log

Enter NUMBER for Menu Selection

PRESS *** Esc *** to return to MAIN MENU

Figure 30. Download PM Data/Event/Alarm Log Menu

***** Westell *****

***** DOWNLOAD PM DATA / EVENT LOG / ALARM LOG *****

Instructions for downloading:

Using Hyperterminal:1) Click on the “Transfer” menu.

2) Click on “Receive File...”

3) Select folder to place the file in.

4) Select “Xmodem” as the protocol, and Click “Receive”.

5) Enter a filename for the received file. (filename.TXT)

6) Click “OK” to start download.

Using ProComm:1) Press <Page Down> key.

2) Select Item “1) XMODEM”.

3) Enter Path and Filename to save to. (C:\path\filename.TXT)

4) Press <ENTER> to start download.

Note: Error Checking = Checksum

PRESS *** Esc *** to return to MAIN MENU

Figure 31. Download PM Data/Event/Alarm Instruction

Screen

11. TL1 COMMANDS

The 522‐10I3 allows maintenance personnel to use TL1 com­mands for remote provisioning, data manipulation andretrieval of the event log. A list of TL1 commands that the unitrecognizes are shown in Table 9 and Table 10.

12. TESTING & TROUBLESHOOTING

12.1 Testing

Initial testing consists of performing basic test procedures us­ing the unit's internal pattern generator or standard DS3 test

Section 522‐100‐203 030‐100647 Rev. A �

141011I3RA

equipment (T‐Berd, Sunrise, REACT or equivalent) to verifythe unit's basic functions, such as loopback and signal regen­eration, and verify that the LEDs are operating properly.

This equipment should not be field repaired. If the equipmentis suspected of being faulty, replace it with another unit, op­tioned identically, and retest. If the replacement unit appearsto operate correctly, the original unit may be faulty and shouldbe returned to Westell for repair or replacement (Paragraph14.2).

Westell contact information (Figure 32) can be accessed by se­lecting “12” from the Craft Port Main Menu.

***** Westell *****

***** CONTACT INFORMATION *****

Westell Inc.

For Technical Support Call:(800) 377-8766EMail: global_support@westell.comInternet: www.westell.com

Westell Model 522-10 I3 DS3 NIUCLEI: NCIPCJ0DAASoftware Release: 096-000006-00

PRESS *** Esc *** to return to MAIN MENU

Figure 32. Contact Information Menu

12.2 Troubleshooting

If trouble is encountered, verify all installer connections to theassembly and check that the CO power fuse is not blown. Alsoverify all module connections and option switch settings, andverify the modules are making a positive connection with theshelf connector. If trouble persists, replace the suspect unit andrepeat procedures outlined. These procedures are not de­signed to effect repairs or modifications. Any tests beyondthose outlined herein, or repairs made beyond replacing afaulty unit, are not recommended and may void the warranty.

13. CUSTOMER & TECHNICAL SERVICES

13.1 Customer Service & Technical Assistance

If technical or customer assistance is required, contact Westellby calling or using one of the following options:

Voice: (800) 377‐8766email: global_support@westell.com

For additional information about Westell, visit the WestellWorld Wide Web site at http://www.Westell.com.

13.2 Part Numbers

This equipment is identified by a product number (522‐10I3),which consists of two parts: the specific model number (522‐10)and the issue number of the equipment (I3). Each time achange is made to the product which changes the form, fit, orfunction of the product, the issue letter is incremented or ad­vanced by one. Be sure to indicate the issue level as well as themodel number when making inquiries about the equipment.

14. WARRANTY & REPAIRS

14.1 Warranty

Westell warrants this product to be defect free at shipment timeand warrants this product to be fully functional for the time peri­od specified by the terms and conditions governing the productsale. Equipment repair/modification attempts by anyone otherthan authorized Westell representatives will void the warranty.

14.2 Repair and Return

Westell will repair or replace any defective Westell equipmentwithout cost during the warranty period if the unit is defectivefor any reason other than abuse, improper use, or improperinstallation. To return defective equipment, first request a Re­turn Material Authorization (RMA) number from Westell bycalling or using one of the options shown below. Once an RMAnumber is obtained, return the defective unit (freight prepaid),along with a brief problem description, to the address we willprovide to you when you contact us.

Voice: (630) 375‐4211email: rgmdept@westell.com

Replacements will be shipped in the fastest manner consistentwith the urgency of the situation. Westell will continue to repairor replace faulty equipment beyond the warranty period for anominal charge. Contact Westell for details.

15. SPECIFICATIONS

15.1 Ordering Specifications

To order units, call the telephone number shown in Part 13 andplease specify a specific model number shown in Table 8.

Model # Description

522‐10I3 522‐10I3 DS3 Network Interface Unit with Performance Mon­itoring. CLEI* Code: NCIPCJ0DAA; Barcode/ECI: 178572; CPR: S73855.

Mounting Options for use with the 522‐10I3

DBMA200‐01 DBMA200‐01, Single‐Position DS3 Mounting.CLEI* Code: NCM2WX0DRA; Barcode/ECI: 445093; CPR: 206730.

DBMA200‐01L4 DBMA200‐01, Single‐position DS3 mounting w/locking cov­er. CLEI* Code: NCM22X0DRA; Barcode/ECI: 445595; CPR: 206730.

DBMA200‐03 DBMA200‐03, 3‐position DS3 Mounting.CLEI* Code: NCM2XM0DRA; Barcode/ECI; 445094; CPR: 206731.

DBMA200‐03L4 DBMA200‐03, 3‐position DS3 Mounting w/Locking Cover.CLEI* Code: NCM2ZM0DRA; Barcode/ECI; 445556; CPR: 206731.

DBMA200‐03FA DBMA200‐03FA, 3‐position DS3 Mounting.CLEI* Code: T3M3D00CRA; Barcode/ECI: 450680; CPR: 209672.

DBMA200‐12 DBMA200‐12, 12‐position DS3 Mounting.CLEI* Code: NCM2YN0DRA; Barcode/ECI: 446980; CPR: N70863.

DBMA200‐24 DBMA200‐24, 24‐position DS3 Mounting.CLEI* Code: NCM2YY0DRA; Barcode/ECI: 445095; CPR: 206732.

DBMAWB‐24 Model DBMAWB‐24 DS3 Wall Mounting Bracket.

801‐000623 Locking Cover, DBMA200‐12 or DBMA200‐24.

*CLEI is a trademark of Telcordia Technologies.

Table 8. Ordering and Option Information

Section 522‐100‐203030‐100647 Rev. A�

151011I3RA

15.2 Regulatory/Agency Specifications

The 522‐10I3 module meets the following regulatory, safety, orenvironmental specifications or requirements:

� Telcordia GR‐499‐CORE and ANSI T1.102‐1993

� Meets limits of radiated and conducted emissions de­fined in FCC Part 15 for Class A equipment

� UL 60950‐1, 1st Edition

� CAN/CSA C22.2 No. 60950‐1‐03

Provision Commands

Syntax: ED-T3:::<CTAG>:::<OPTION>=<PARAMETER>; Note: <CTAG>= Up to 6 Character label

<OPTION> <PARAMETER> TL1 Response Notes

HETLOSRSP

PTHRU HETLOSPSP=PTHRU

Sets the CPE LOS Response to the desired actionIDLE HETLOSRSP=IDLE

AIS HETLOSRSP=AIS

HERMLBTODIS HERMLBTO=DIS

Enables or disables the remote LBTOENA HERMLBTO=ENA

HEMNLBTODIS HEMNLBTO=DIS

Enables or disables the manual LBTOENA HEMNLBTO=ENA

HELBTO

20 HELBTO=20

Sets the Loopback Time-out to the desired setting60 HELBTO=60

120 HELBTO=120

24HR HELBTO=24HR

HEMLBMODENET HEMLBMODE=NET

Places the loopback function in network or dual modeDUAL HEMLBMODE=DUAL

HETHRLV1E-6 HETHRLV=1E-6 Set DS3 PM errors threshold level either 10-E6 or

7.5.10E-57.5E-5 HETHRLV=7.5E-5

HERTPMNONE HERTPM=NONE

Enable/Disable NPRM ReportingNPRM HERTPM=NPRM

HENETFRAME

AUTO HENETFRAME=AUTOSets the network side of the unit to the proper framingdetection optionCBIT HENETFRAME=CBIT

M13 HENETFRAME=M13

HECPEFRAME

AUTO HECPEFRAME=AUTOSets the CPE side of the unit to the proper framing detec-tion optionCBIT HECPEFRAME=CBIT

M13 HECPEFRAME=M13

HEFEAC

12H HEFEAC=12H

Configuration value for FEAC(Far End Alarm Control)04H HEFEAC=04H

16H HEFEAC=16H

HETRMTLBODIS HETRMTLBO=DIS Enables or disables the 6dB transmit pad to the custom-

er.ENA HETRMTLBO=ENA

HESDEF RESET HESDEF=RESET Resets Provision options to factory defaults

HECKTID <Enter Circuit ID> HECKTID=<Circuit ID> Character string of 32 characters max for circuit ID

HEMANLB DIS HEMANLB=DIS Enables or disables the manual loopback button

HEMANLB ENA HEMANLB=ENA Enables or disables the manual loopback button

HEINBDLBDIS HEINBDLB=DIS

Enables or disables use of the inband loopback functionENA HEINBDLB=ENA

Table 9. Provisioning Commands

Section 522‐100‐203 030‐100647 Rev. A �

161011I3RA

TL1 Command Options Description

INIT-REG-COMThis command reset all PM stored data to zero.

Command Syntax: INIT-REG-COM : [ <tid> ] : [ <aid> ] : <ctag> :

SET-DAT

This command changes the system date and time.

Command Syntax: SET-DAT : [ <tid> ] : [ <aid> ] : <ctag> : YYMMDD,HHMMSS

YYMMDD Year, Month and Day

HHMMSS Hour, Minute and Second

RTRV-HDRThis command is used for communication.

Command Syntax: RTRV-HDR : [ <tid> ] : [ <aid> ] : <ctag> :

RTRV-LOG

This command is used to retrieve event log data for the event or page.

Command Syntax: RTRV-LOG : [ <tid> ] : [ <aid> ] : <ctag> : : LOG1 - <length> n

En If <length> = “E” return single event number “n” where 1 < n < 200

Pn If <length> = “P” return page ”n” where 1 < “n” < = 40

RTRV-PM-COM

This command is used for querying all the PM stored data

Command Syntax: RTRV-PM-COM : [ <tid> ] : [ <aid> ] : <ctag> : <montype> , , , [ <dirn> ] , [ <tmper> ] , [ <mon-dat> ] ,{ <montm> ]

Note: If the <mondat> and <montm> parameters are ignored, the default will be the current time period.

Montype ESL, SESL,UASL, ESP, SESP, UASP

Dirn AZ (Network to Customer direction), ZA (Customer to Network direction)

tmper 1-HR, 1-DAY

mondat MM-DD (Month and date), if (MM-DD is blank) default is current date and time.

montm HH-MM, if (HH-MM is blank) default is current date and time specified by tmper. MM iseither 00, 15, 30 or 45 minutes

RTRV-T3

This command is used to query all the NIU provision parameters.

Command Syntax: RTRV-T3 : [ <Tid> ] : [ <aid> ] : <ctag> : : : : <optnm>

optnm Values are: HETLOSRSP,HERTPM, HETHRLV, HERMDLK, HEMANLK, HELBTO,HEMLBMODE, HEFEAC, HESDEF, HENETFRAME, HECPEFRAME, HECKTID

Table 10. TL1 Command Options

15.3 Electrical and Physical Specifications

The electrical and signalling specifications are listed below,and the physical specifications are shown in Table 11.

A. DS3 Interface: Per ANSI T1.404‐2002

B. DS3 Pulse Shape: Per Telcordia GR‐499‐CORE andANSI T1.102‐1993

C. Jitter Tolerance: Per Telcordia GR‐499‐CORE

D. Line Rate: 44.736Mb/s (±20ppm)

E. Line Impedance: 75 Ohms (±20%) at 22.368MHz

F. Receiver Sensitivity Range: 0 to 900 feet of 728‐ or734‐type cable

G. Loopback activation/deactivation via FEAC or in‐bandcodes

H. Maximum Detect Error Rate: <10‐3

I. Loopback Time‐out: 20/60/120 Minutes or 24 Hours ordisabled

J. Manual Loopback Control: LPBK push‐button switch orvia Craft menu interface selection

K. Power: 22 to 56Vdc; can be powered from a ‐48Vdc or a+24Vdc source

L. Current Draw: <55mA @ ‐48Vdc

Physical Feature U.S. Metric

Height 5.6 in. 14.2 cm

Width 0.7 in. 1.8 cm

Depth 5.9 in. 15 cm

Weight (approx.) 12 oz. 340 g

Operating Temp. ‐40° to 149°F ‐40° to 65°CHumidity 0 to 95% (non‐condensing)

Table 11. Physical Specifications