Tài liệu Telecommunications docx

Listing of Products DescriptionSoneplex ® Broadband Chassis Heat baffle/fiber optic cable management panel Plenum Fiber Management Panel Common Modules Main Processor Unit Version 5.1 Ma

Listing of Products Description

Soneplex ® Broadband Chassis Heat baffle/fiber optic cable management panel Plenum Fiber Management Panel

Common Modules Main Processor Unit Version 5.1 Main Processor Unit Version 6.0 Alarm Processor Unit

DS3 MUX module DS3 MUX Plus module Test Access Unit Electrical Carrier - 1 module Virtual Tributary Mapper Module Remote Communications Module Low Speed Modules

Optical DS2 module

SC connector

FC connector Optical DS2 module - short range

SC connector

FC connector Central office HDSL module Repeater Loop Extender (-130V) module Repeater Loop Extender Plus (+130V) module Soneplex DS1 Loop Extender module Soneplex HDSL Repeater module Optional Equipment

Front access panel Extender card for DS1 access (for HLX, RLX modules only) Streaker module

Soneplex communication channel access chassis DS3 communication access module

Remote HDSL Chassis and Module HDSL remote module

Standard Simplex Power Simplex Power and Idle Code Simplex Power and Local Power HDSL one position remote mounting chassis With wire-wrap and RJ connections HDSL two position remote chassis With wire-wrap and RJ connections HDSL eight position remote chassis

No AC power With AC power HDSL network interface device AC/DC power supply for HWM1

Name

SPX BAFF PFM

MPU MPU APU DS3 DS3 TAU EC1M VTMM RCM

ODS2 ODS2 ODS2 ODS2 HLXC RLX RLX+

DLX HRX

FAP EXT STK CCAS CAM

HLXR HLXR HLXR HLXR HWM1 HWM2

HWM4 HWM4 NID

Listing of products continues on next page

Listing of Products Description

Remote Quad Loop Extender (QLX) Chassis and Module Quad Loop Extender module

SC connector

FC connector Quad Loop Extender module - short range

SC connector

FC connector Quad Loop Extender four position wall mount chassis With RJ connectors

With wire-wrap Quad Loop Extender two position rack mount chassis With RJ connectors

Optional Equipment for QLX Remote Chassis (FWM-QLXRJ4A and FWM-QLXWW4A)

Craft performance monitoring module Line terminating unit

Power supply unit One 110 VAC/-48 Vdc supply Two redundant 110 VAC/-48 Vdc supply 23" rack mount bracket for four position QLX chassis

24 Vdc Equipment for Quad Loop Extender Chassis

Quad Loop Extender - SC connector Craft Performance Monitoring Module Alarm Processor Unit

Soneplex ® Radiator™ High Density Apparatus Case

Pressurized, 30' Cable Non-protected Protected, gas tube Protected, solid state Gas tube protector spare module

Name

QLX QLX QLX QLX FWM FWM FRMQ

CPM LTU PSU-1 PSU FRM

QLX CPM APU

FAN FFM

HRXC HRXC HRXC

Today, network planners face a dilemma Since the future of standards and services remainsunclear, there is a healthy concern about investing in what may become “deadend” technol-ogy Still, networks must grow and change, both to provide current revenue and to accom-modate emerging services and markets, while competition and deregulation add to the sense

of urgency

The penalty for delay is stagnation On the other hand, choosing the wrong path wastescurrent resources and blocks future growth The Soneplex® Intelligent DS1 Service DeliveryPlatform lets you build today, while preserving future options

The Soneplex platform offers a modular architecture which supports copper and fiber optictransport facilities in point-to-point and point-to-multipoint topologies

By integrating network interface, access, and management functions, the Soneplex platformsubstantially reduces your required inventory The Soneplex platform lets you install thefacilities which will earn you revenue today, and add new ones as demand – and revenuepotential – grows The modular design makes change, such as upgrade from asynchronous tosynchronous interface, easy, often simply a matter of swapping cards

The Soneplex system also improves your return on costly, skilled human resources

Preprovisioning is easy and cost effective, so turnup of services can be handled quickly,inexpensively, and often remotely The same is true of system administration and mainte-nance This, coupled with sophisticated self-test and notification capabilities, gives you acritical edge as networks grow larger and more densely packed

Most important, the Soneplex system keeps your options open You can continue to useexisting infrastructure while you plan your future Today’s HDSL or DS1 modules, interfacing

to copper, can operate side-by-side with optical DS2 modules interfacing with fiber As yourneeds change, the Soneplex platform will evolve with you Growth and change become part ofyour strategic plan

As networks are required to do more, cost less to operate, and perform more reliably, theSoneplex system lets you build with confidence The system accommodates a range ofasynchronous and SONET interfaces, DS3 and STS-1 Upgrade from copper to fiber can be assimple as a change of modules

Two basic Soneplex systems are designed to meet all of your loop access and transport needs,

from the central office to network hubs to large customer sites The Soneplex Loop Extender

System distributes services from DS1 feeds The Soneplex Broadband System lets you

distribute services from DS3 or STS-1 high bit-rate interfaces

The intelligence built into the Soneplex system lets it take an active part in network ment The system provides simple, flexible access to the network for remote testing, andmonitors many aspects of the network measuring user-defined parameters and sendingalarms, or even rerouting traffic when error-rate thresholds are exceeded These capabilitiescan substantially reduce, or even eliminate, many of today’s costs of service initiation orsystem maintenance

manage-The Soneplex DS3 Remote Control System allows central office control of a remotely located

Soneplex Broadband System by transporting individual circuit information via an embedded

DS3 communications channel without using valuable bandwidth

The Soneplex system’s high-density, multifunction design combines the functions of a variety

of network elements: multiplexers, DSX bays, office repeaters, fiber optic extension shelves andmonitoring devices It simplifies installation, saves valuable space and eliminates multivendorproducts Each chassis is made up of three primary sections: one for network interface,another for service distribution, and a third for network management and maintenance

The high-speed network interface section of the Soneplex Broadband System accepts DS3

inputs and eliminates the need for external M13 multiplexers It also supports STS-1 nous electrical input – an inexpensive form of connection to collocated equipment – performs

synchro-VT mapping, and has time-slot assignment capability

The service distribution section of the system supports up to 28 modules for delivery of DS1hicap service over conditioned or unconditioned copper or fiber facilities High bit-rate digitalsubscriber line (HDSL) modules perform 2B1Q conversions for transport of hicaps over nonrepeater-equipped copper Optical DS2 modules convert electrical signals to optical, trans-porting 4 DS1 signals over a DS2 fiber link

The management and maintenance section consists of a main processor unit (MPU) and analarm processor unit (APU) The system supports TBOS and TL1 interfaces for remoteconnection to an operations support system (OSS) It also supports an easy-to-use, menu-driven craft interface, and X.25 and alarm contact closure interfaces

HDSL signal transport allows local exchange carriers to continue to earn revenue from existingcopper infrastructure Each HDSL module allows one DS1 signal to be transported up to12,000 feet over copper without the use of line repeaters, bridge taps, or cable pair separation.The addition of an HDSL repeater doubles the effective delivery distance to 24,000 feet.HDSL compensates for gauge changes, and tolerates the presence of near-end crosstalk RLXmodules in the chassis will extend DS1s, and power up to 10 span repeaters on a singleunconditioned copper circuit Each 19" shelf supports 20 modules The standard Soneplexshelf supports up to 28 modules serving as many as 28 customer sites

For fiber transport, optical DS2 modules can operate side-by-side with HDSL cards Up toseven customer sites can be supported by each Soneplex chassis One optical module per siteprovides unprotected 6.3 Mbps service (4 DS1s) Two modules per site provide 1+1 protection.The combination of HDSL and optical DS2 modules provide: T1 hicaps, T1 transport of digitalloop carrier, T1 video using the latest compression techniques, fractional T1, and cell-siteconnection for cellular telephony transmission

The system’s remote OSS interface and onboard management capabilities make it ideal forunstaffed sites or operations with limited staffing capabilities Remote provisioning andmonitoring simplify setup and routing maintenance demands

Realtime and historical performance monitoring, and remote loopback and bit-error testinggreatly reduce the demands on technical support personnel

System Design and

Capabilities

Soneplex System

Application and

Operation

• A variety of plug-in network interfaces give you flexibility today, and a clear

migration path to SONET.

• A range of customer interfaces let you use existing copper infrastructure, and

upgrade easily to fiber.

• The Soneplex system is compatible with current operations support systems, for

ease of conversion.

• Remote operation and support capability reduces downtime and maintenance cost.

• Embedded X.25 interface supports up to three switched, virtual circuits, and

eliminates the need for an external packet assembler/disassembler (PAD).

• High density design saves floor and rack space, and makes Soneplex ideal for hut

or cabinet installations

• Improved cable management, organizing both copper and fiber, saves space and

simplifies management and repair.

• Full-time performance monitoring allows proactive repair, reducing customer

impact and loss of revenue

• Remote monitoring and alarms allow centralized trouble shooting for better use

of personnel and improved response

• Housekeeping alarm transport eliminates the cost of separate fire and tamper

alarm reporting systems.

• Remote DS1 loop back for single-ended testing of each DS1 reduced both failure

and repair cost.

The Soneplex Intelligent DS1 Service Delivery Platform supports your existing infrastructurewhile positioning you for a competitive future Rather than painful choices based on technol-ogy, you are freed to make simple, rational decisions based on market demand Implementwhat your customers are willing to pay for, and build new infrastructure as revenues allow.Instead of placing new burdens on personnel, the Soneplex platform lets them offload timeconsuming chores to the system itself Technicians acclimate quickly, using familiar existingsupport systems, and can access large areas of the network remotely

As technology and the network grow and change, the Soneplex platform adapts quickly andeasily Today’s rebuild becomes tomorrow’s card swap Migration to fiber, SONET, and newsupport systems becomes easy and economical The Soneplex platform solves the networkplanning dilemma

Soneplex Platform:

Focus on Function

Soneplex Platform in

Summary

The Soneplex Broadband system is a flexible, cost-effective platform which provides DS1services in point-to-point or point-to-multipoint applications while providing a DS3 or STS-1network interface To meet the short turn-up intervals that exist in today’s competitivemarket, different modules can be mixed within the chassis to match the transport facilitiesalready in place These modules include the Optical DS2 (ODS2), the High bit-rate DigitalSubscriber Line Module (HLX), the Repeater Loop Extender Module (RLX), and the DS1 LoopExtender (DLX).

The Soneplex Broadband system accepts a standard electrical DS3 or SONET STS-1 signal onthe network side and can be used with any multiplexer, DCS or network element that gener-ates standard DS3 or SONET STS-1 signals The Soneplex Broadband system consists of arack mount chassis, electrical carrier - 1 (EC1M) and virtual tributary mapper module(VTMM) for STS-1 interface, a DS3 mux module for DS3 interface, and up to 28 low speedmodules which extend up to 28 DS1 circuits over either copper or fiber A main processorunit (MPU) provides the interface from the transmission modules to the operation supportsystem (OSS) An alarm processor unit (APU) provides a critical/major/minor contact closureappearance to the telemetry alarm system (TAS), as well as housekeeping alarm inputs.DS1 transport schemes employed by the Soneplex Broadband system include:

• High bit-rate digital subscriber line (HDSL): The HLX modules perform a DS1/HDSL

2B1Q signal conversion to transport hicaps over repeaterless copper twisted pairs Aninline HDSL repeater may be used to double the transmission distance to 24 kft

• Repeatered DS1s: The RLX modules transport repeatered DS1 signals over copper facilities.

• Optical DS2: The ODS2 modules perform electrical/optical conversions, allowing up to four

DS1 circuits per module to be transmitted over a 1:1 protected or unprotected fiber opticlink This module is housed in the Soneplex Broadband chassis and interfaces with a QLXmodule located at the remote location

• Quad Loop Extender: The QLX modules perform electrical/optical conversions, allowing

up to four DS1 circuits per module to be transmitted over either a 1+1 protected orunprotected fiber optic link This module is located at the remote and interfaces with theODS2 modules located at the central location

• DS1 Loop Extender: The DLX extends one DS1 up to 655' to a DSX-1.

Introduction

Description

The Soneplex Broadband system provides a variety of interfaces for interconnection into officealarm systems and operations centers At the heart of this operations feature set is the directTL1 connection to the X.25 network This connection is accomplished via a synchronousoutput from an EIA-232 port controlled by the MPU This port eliminates the need for anintermediate Packet Assembler/Disassembler (PAD).

Operations

The rear of the Soneplex Broadband chassis has three serial interface ports Port 1 supports anEIA-422 telemetry byte oriented serial (TBOS) protocol interface Port 2 is a serial EIA-232 25-pin D subminiature connector that supports either craft interface or TL1 commands Port 3 isalso a serial EIA-232 25-pin D subminiature connector that can support three logical connec-tions over one X.25 connection These logical connections can be in the form of eitherpermanent virtual circuits (PVCs) or switched virtual circuits (SVCs) The virtual circuits can

be configured for craft interface or TL1 commands

The Soneplex Broadband system stores all revision level information to allow local or remoteinventory via the craft interface terminal or remotely through dial-up access or X.25 Futuresoftware upgrades to the Soneplex Broadband system are performed through a downloadprocedure, which may be accomplished locally through the craft interface or remotelythrough dial-up access

For external back-up protection of system parameters, the system can upload and downloadfrom the MPU its specific configuration database This operation is effected from a personalcomputer using a standard file transfer program with the configuration stored in a disk file.The download procedure of the database will be similar to the MPU software download.MPU-specific administrative and provisioning information is retained on the HLXC, VTMM orDS3 MUX Plus modules for database and restoral purposes Therefore, if MPU replacement isnecessary, no external data transfer or back-up protection is required

Administration

MPU

D L X

H L X C

H L X C

R L X

O D S 2 W

O D S 2 P

Q L X W

T R P R

H R

L X R

OPTICAL DS2 (6.3 Mbps)

2B1Q

OSS

TL1 X.25 TBOS

CRAFT INTERFACE

DS3 or STS-1

VTMM or DS3 MUX WORKING/PROTECT EC1M

H L X R

Q L X P

DSX

Modern maintenance philosophies center around the premise of being alerted to potentialservice outages before the problem manifests itself Through full-time DS1 performancemonitoring, the Soneplex Broadband system provides unparalleled insight into the actualservice level delivered to the customer Extensive maintenance features are provided by theSoneplex common equipment and the service modules themselves Trouble isolation andsectionalization is accomplished through loop backs Front panel indications, along withvisual and audible alarms, provide local notification of critical, major and minor alarms as well

as other maintenance conditions

User access is provided through VT100 emulation, using any personal computer orlaptop computer terminal This capability is available remotely through dial-up access.Protection switching architecture is employed on any service-affecting interface carryingmultiple DS1s The high speed interfaces are all protected 1:1 The optical low speed interfacesare protected 1+1

The Test Access Unit (TAU) is an optional maintenance device that provides monitor andintrusive test access to the DS1 channels in the chassis between the VTMM/DS3 MUX and thelow speed distribution modules (DLX, HLXC, ODS2, and RLX) Access is provided throughBantam jacks on the TAU front panel and is controlled through the Craft Interface The TAUrequires the B1 DS3 MUX and MPU Version 4.2 or later

The DS3 Soneplex Remote Control System provides an embedded DS3 communicationschannel between a DS3 mux installed in a remote Soneplex Broadband and a DS3path terminating device located at the central office The embedded channel provides remotealarm hauling, performance monitoring and provisioning capabilities of the Soneplex Broad-band shelf from the central office Critical circuit information utilizing craft interface or TL1can be collected from seven remote locations from a single point, eliminating the need for acostly overlay network to transport data

All provisioning is performed locally or remotely through the craft interface Depending onthe service delivered, a minimum number of options must be set to enable the circuit

Provisioning information is stored in non-volatile memory, and is maintained in the MPUeven during power down conditions Each module also retains its own provisioning informa-tion in case the MPU itself needs to be removed and replaced The new MPU is then updatedautomatically by each module in the Soneplex chassis

A standard TL1 message set is supported through logical channels in the X.25 link Customercircuits may be enabled, disabled, reprovisioned, looped for trouble isolation or interrogatedfor performance information via this link

Provisioning

Maintenance

Remote Control

Each Soneplex Broadband system can be configured to hub repeatered DS1s, optical DS2s,DS1 circuits using HDSL technology and DS1 extensions up to 655' to a DSX-1 The networkinterface to each chassis is one electrical DS3 or STS-1 DS1 distribution requirements mayvary for each Soneplex Broadband system In the hubbing example shown here, three differ-ent transmission schemes provide DS1 service to three different customers:

• Customer A is fed a repeatered DS1 over copper

• Customer B is fed a DS1 using high bit-rate digitalsubscriber line transmission technology

• Customer C is fed up to four DS1s over a protectedfiber link

Hubbing

Point-to-Multipoint

T1 SPAN LINE

CUSTOMER PREMISES A

1 DS1

HDSL 2B1Q

1 DS1

CUSTOMER PREMISES B

HLXR

CUSTOMER PREMISES C

NETWORK INTERFACE

1 DS3 or STS-1

SONEPLEX BROADBAND CHASSIS

In this outside plant (OSP) application, DLCcabinets are fed with protected or unprotectedoptical DS2s, repeatered DS1s or DS1s using HDSLtransmission technology

SUBSCRIBERS OPTICAL DS2 DLC

SUBSCRIBERS HDSL

2B1Q

1 DS3 or STS-1

SONEPLEX BROADBAND CHASSIS

OUTSIDE PLANT CABINET

NETWORK INTERFACE

In a second OSP application, DS1 hicap services arehubbed from a cabinet One or more Soneplex Broad-band chassis can be mounted in the cabinet for DS1distribution using fiber or copper facilities

CABINET

SPAN LINE

CUSTOMER PREMISES A

1 DS1

1 DS1

CUSTOMER PREMISES C

HLXR

SONEPLEX BROADBAND CHASSIS

CUSTOMER PREMISES B

DS3 FLC DS3 FLC

The Soneplex Broadband system can also be used in high risebuilding applications to distribute hicap DS1s to variousfloors utilizing the physical transport media available, eithercopper or fiber optical riser cable The Soneplex Broadbandchassis is located in the basement or a closet of the building,feeding one or more customers within the building.

The DS3 FLC is manufactured by ADC Telecommunications

It converts an optical DS3 signal to an electrical DS3 signalfor interface with the Soneplex Broadband chassis

The Soneplex Broadbandplatform is ideal for thisapplication regardless ofwhether the transportmedium is copper or fiber

HLXR

BTS CABINET B

HLXR

HRX

HLXR

QLX QLX

HDSL 2B1Q NETWORK

INTERFACE

DS3 OR STS-1

SONEPLEX BROADBAND CHASSIS

The Soneplex Broadband system with the STS-1 interfaceallows a carrier to extend the SONET network to the cus-tomer Ideally connected to an add-drop multiplexer, theSoneplex Broadband system provides VT1.5 mapperand time-slot assignment of DS1s Hairpinning VT1 signalssupported, eliminating the need to backhaul the STS-1 signal.

SONET Ring

Often the Soneplex Broadband chassis is deployed at a remote site or CEV, stranding criticalperformance information unless a costly overlay network is connected With this remotecontrol system, provisioning and maintenance information is transferred from seven broad-band chassis and can be accessed from a central location from a communications channelaccess shelf (CCAS)

DS3 Remote Control

D C S

STS-1

STS-1 ADM

ADM

ADM

SONEPLEX BROADBAND

28 DS1s

DS3 CENTRAL OFFICE

Up to 7 DS3s DS3

TL1 CRAFT

ADM CCAS

ADM

ADM

SONEPLEX BROADBAND

DS1s DS3

REMOTE SITE or CEV

PC WORKSTATION

Soneplex Optical DS2 ModuleLow speed optical interface converts four DS1 signals into an optical DS2 fordelivery over a pair of singlemode fibers A Quad Loop Extender (QLX) or QuadFiber Loop Converter (QFLC) is used at the remote location to convert the optical DS2 back tofour DS1s If a QLX is used at the remote location, 1+1 protection is an option; otherwise theprotection is 1:1 The ODS2 provides BER threshold protection switching, far-end alarmvisibility and far-end housekeeping alarms.

Quad Loop Extender Module

In the Soneplex Broadband system, this module is used at the remote location

to terminate the optical DS2 signal from the ODS2 module located at the CO

or hubbing location The QLX provides BER threshold protection switching, far-end alarmvisibility and far-end housekeeping alarm transport back to the hubbing location

HDSL Central Office ModuleThe HLXC supports one DS1 per module and provides conversion from DS1electrical format to HDSL format (2B1Q), continuous monitoring on HDSLloops, and -130 Vdc (+130 Vdc if the HDSL repeater is present) loop power to the remoteHDSL module (HLXR) The module allows full duplex transmission up to 12,000' over twounconditioned copper pairs The HLXC provides far-end alarm visibility and full performancemonitoring It also performs DS0 channel blocking

HDSL Remote ModulesThe remote HDSL module supports one DS1 per module, operates on linepower from the HLXC and specific models provide a -48 Vdc local poweroption It can also operate as an NID The HLXR provides a 1.544 Mbps DSX-1 interfacetoward the customer (ANSI T1.403-1990) The HLXR will recognize and activate on in-bandloop back codes

HDSL Repeater ModuleThe HDSL repeater module supports one DS1 per module and operates on+130 volt line power from the HLXC The HDSL repeater extends the HDSLtechnology beyond the Carrier Serving Area to a maximum distance of 24 kft

Repeater Loop Extender ModuleThe RLX supports one DS1 per module and can be optioned as an automaticspan power repeater (ASPR) or as a long haul DS1 interface to a DSX The RLXprovides full performance monitoring and performs DS0 channel blocking

DS1 Loop Extender ModuleThe DLX supports one DS1 per module This access module is designed to dropone DS1 signal to a DSX-1 or another piece of network equipment with astandard DS1 interface

ODS2 Description

QLX

HLXC

HRX

DLX RLX HLXR

R = FAULT

G = O.K FLASH = LPBK OFF = UNEQPP DS1 ONLINE

G = ONLINE

R = LINE LOCK OFF = OFF LINE

RESET

LMPTST/

APS

OPT APS

QLX

FAIL BER LOCKOUT FORCE

The Soneplex Broadband system can be ured for optical DS2 extensions by provisioning

config-an ODS2 access module in the Soneplex band central office chassis and a Quad LoopExtender (QLX) module at the remote end

Broad-The ODS2 access module multiplexes up tofour DS1 signals for simultaneous two-way(full duplex) transport over two singlemodeoptical fibers to a remote QLX module TheQLX module demultiplexes the signal tofour DS1 circuits The system can beconfigured for either unprotected or 1:1protection In an unprotected configuration,one ODS2 module is deployed at the CO andone QLX module is deployed at the remotesite In a protected configuration, two ODS2modules are deployed at the CO and twoQLX modules are deployed at the remotesite Seven protected or unprotected systemscan fit into the Soneplex Broadband chassis

Each DS1 circuit can be provisioned foreither AMI or B8ZS The two line codes can

be intermixed on the same module

Two levels of performance based alarms(BER) are software selectable The BERswitching range can be selected from 10-4 to

10-10 for major alarm/protection switch;

minor alarm notification is selectable from

10-6 to 10-10 The remote QLX module, inconjunction with the craft performance monitoring module (CPM) monitors, collects andreports DS1 line and path performance to the embedded operations support The mainprocessor unit provides the interface to an operation support system (OSS)

Other features of optical DS2 modules include:

• Compatible with the B3, C3 and D3 versions of ADC’s Quad Fiber Loop Converter modules

• DS1 interface line build-out (LBO)

• Path or line protection switching with the craft/performance monitoring unit

• Alarm reporting of various alarms as major, minor or remote with the alarm processor unit

• Transparent to frame formats

• Remote far-end alarmvisibility

• Extended temperature

• Remote loop backs

• Short Range Version(10.5dB Optical Budget)Option available

RMT/

HSKP LPBK ENBL

RESET

FAIL BER OPT

STATUS

ONLINE

LOCKOUT FORCE APS LMPTST/

APS

ODS2 Module

1 - 4 DS1s CO/CEV/HUT CUSTOMER PREMISES

Q L ODS2

1300 NM

22 DB LINK BUDGET

UNPROTECTED SYSTEM

ADD FOR 1+1 PROTECTED SYSTEM

HS DS3 W HS DS3 P

ODS2 W

P

1 DS3

Q L

The optical DS2 system can operate in either protect or unprotect modes In both modes, allfour DS1s are recovered from the optical link and will be delivered to the customer accesspoint.

In a protected link, the optical DS2 system can be optioned, through software commands, foreither line or path protection switching Line protection switching refers to group-switchingall four DS1s from the working to the protect modules Path protection switching involvesevaluating each DS1 on an individual basis and switching individual DS1s between tworemote QLX modules Therefore, one QLX module could deliver from one to four DS1 signals

to the customer, with the remaining signals provided by the second QLX module in theprotected link

For path protection switching to be active, a craft performance monitoring module (CPM)must be installed in the remote chassis At the remote

location, the recovered DS1 signals are routed to theCPM for evaluation and the best signal of each pair ischosen to be delivered to the customer

Individual DS1 circuits can be looped back remotely

Initiating a command from the craft interface toloopback a remote DS1 signal sends a proprietary loopback command over the fiber to the far-end, loopingback that DS1 to the network and sending an alarm indication signal (AIS) to the customer

The optical DS2 system can be used to transport a variety of services up to the DS1 rate,including:

• Switched Multimegabit Data Service (SMDS)

• DS1 service to cell sites

JACK ACCESS PANEL REMOTE QLX FOUR POSITION CHASSIS

LTU

Loopback

Applications

4 1.544 Mbps ± 200 bps AMI or B8ZS

SF, ESF, SLC ® -96 and unframed 9/125 µ m singlemode

2 4

1310 nm

22 dB

20 miles (average)

FC, SC -48 Vdc or 110 VAC

6 watts typical per QLX module -40 o C to 65 o C

Fiber – Unprotected System:

Fiber – Protected System:

1310 nm 10.5 dB

Fiber – Unprotected System:

Fiber – Protected System:

The QLX can operate in either protect or unprotect modes In both modes, all four DS1s arerecovered from the optical link and will be delivered to the customer access point.

SF, ESF, SLC ® -96 and unframed 9/125 µ m singlemode

2 4

1310 nm 10.5 dB

Fiber – Unprotected System:

Fiber – Protected System:

4 1.544 Mbps ± 200 bps AMI or B8ZS

SF, ESF, SLC ® -96 and unframed 9/125 µ m singlemode

2 4

1310 nm

22 dB

20 miles (average)

FC, SC -42.5 Vdc to -56.5 Vdc -48 Vdc or 110 VAC

6 watts typical per QLX module -40 o C to 65 o C

Fiber – Unprotected System:

Fiber – Protected System:

12 kft, meeting Carrier Serving Area (CSA) lines Each of the two wire pairs carries one half ofthe net payload plus system overhead Each paircarries 784 Kbps in both directions simultaneously.

guide-HDSL Loop

HLXR

UNCONDITIONED LINE 12,000'

392 KBAUD (784 KBPS) USING 2B1Q LINE CODE

LOOP 1

LOOP 2

DS1

ANSI T1.403 T1.408

INTERFACE

1 DS3 HS DS3 W HS DS3 P

HLXC 1

.

28

An HDSL repeater may be added to the HDSL span

to double the transmission distance to a maximum

of 24 kft

The central office HDSL module (HLXC) performs data translation between the bi-polar DS1signal and the HDSL 2B1Q line code The HLXC monitors, collects and reports DS1 andHDSL line and path performance to the main processor unit which in turn provides theinterface to an operation support system (OSS) The HLXC also communicates with theremote HDSL module (HLXR) via the HDSL embedded operation channel (EOC) which isdefined as part of the HDSL frame structure in Bellcore’s FA-NWT-001211 Network Opera-tions Framework Generic Requirements for HDSL

The remote HLXR module performs data translation between the customer side bipolar DS1signal and the facility HDSL 2B1Q line code The HLXR customer side interface is per ANSIT1.403 The DS1 line performance is monitored by the HLXR and reported to the HLXC viathe EOC OSS information from the HLXR can be obtained through the craft interface on theHLXR front panel or the MPU located at the CO

Four unique versions of the HLXR offer incremental feature enhancements directed at specificcustomer requirements All units are packaged for single slot deployment in 400 style chassisand possess a craft interface on the front panel for circuit monitoring and provisioning Allsystems provide span power capability

• D4 HLXR (Standard)

• D3 HLXR

- Simplex power for CSU or NID

• D2 HLXR

- Simplex power for CSU or NID

- Idle code generator (as specified in ANSI T1.403-1995)

• D1 HLXR

- Simplex power for CSU or NID

- Local power

STS-1 FAIL

VTMM

FORCE

STS-1 LOS

EC1M

FORCE SYNC HLDOVR

Other features of the HDSL module include:

• Full and fractional DS1 (individual DS0 blocking)

• HLXR integrated NID that responds to in-band framed or unframed loop back codes,DS1 ESF facility data link loop codes and manual loop back control

• Remote alarm indicators

• Automatic line code and frame format operation

• Continuous real time monitoring of Signal-to-Noise-Ratio and Pulse Attenuationparameters on each loop

• Performance monitoring capabilities per ANSI T1.403

• Access to ESF path performance monitoring statistics (non-intrusive monitoring)

• Alarm reporting via dry relay contacts, TBOS, TL1, craft and X.25 interfaces via theMPU interface

• Current and voltage test points for measuring the loop power

• Insensitive to tip/ring and loop swapping

• Channel blocking code utilizing an 8-bit programmable value

• Loopback acknowledgment signature for programmable loopback

• DS1 simplex power capable of powering CSU at 60 milliamps

• Backwards system compatibility with C1 HLXC or B1 HLXR with reduced feature setwhich match the earlier functionality

• Programmable loopback expanded to HLXC recognizes 16-bit codes in DS1 framed orunframed format When framed, the codes are recognized in either frame bit overwrite or frame bit insert mode

Dimensions (HxWxD):

Weight:

HLXR System Compatibility:

Dimensions (HxWxD):

Weight:

1 1.544 Mbps ± 200 bps AMI or B8ZS

SF, ESF, SLC ® -96 and unframed

784 Kbps dual duplex transmission 2B1Q (two binary, one quaternary) Non-loaded copper pairs, repeaterless transmission up to 12 Kft

on 22 or 24 AWG or 9 Kft on 26 AWG including bridge taps; mixed gauge cables allowed; loop lengths may differ up to 3,300'

-42.5 Vdc to -56.5 Vdc Loop power, -48 Vdc -130 Vdc for HLXR +130 Vdc for HDSL repeater and HLXR See power table on page 54

-40 o C to 65 o C Soneplex Broadband and Loop Extender Chassis 4.625" x 6875" x 9.75" (11.75 x 1.75 x 24.76 cm) 913 lbs (.415 kg)

400 Style mechanics chassis 5.6" x 1.4" x 6.0" (14.2 x 3.6 x 15.2 cm) 1.2 lbs (.55 kg)

The HDSL repeater will reside between the HLXC andHLXR Two separate HDSL facility segments will

be created; the first between the centraloffice and the repeater, and the secondbetween the repeater and the remote site

Each of the two HDSL segments in therepeater application will be capable ofreaching up to a full CSA distance This results

in a maximum reach of 24 kft, or 12 kft per segment

The HDSL repeater should be deployed near mid span inthe outside plant environment using a 239-type apparatus casewith double-wide slots Only one HDSL repeater may be deployedalong an HDSL trasmission path

HRX HDSL REPEATER

CAUTION USE OF ELECTRICAL SHOCK VOLTAGES UP TO 260 VOLTS MAY BE PRESENT ON TELE- COMMUNICATIONS CIRCUITS.

YELLOW

SELFTEST FLASHING GREEN

PERFORMING ACTIVATION GREEN

ALL LOOPS ACTIVE RED

EQUIPMENT FAILURE

1 GND 2 NC 3 LOOP 1 RING 4 LOOP 1 TIP 5 LOOP 1 RING 6 LOOP 1 TIP 7 NC 8 LOOP 2 RING 9 LOOP 2 TIP 10 LOOP 2 RING 12

NETWORK NETWORK CUSTOMER

Impedance:

Loop Loss Allowed:

Power Nominal Input Voltage:

Maximum Power Consumption:

Compatibility System:

Dimensions (HxWxD):

Weight:

Temperature Operating Inside the Case:

Outside the Case:

Storage Relative Humidity:

Operating and Storage:

13.5 +0.5 dBm

135 Ω

Up to 35 dB; HLXC to HRX and HRX to HLXR

Up to ± 130 VDC 6.2 Watts; all power dissipated in the unit 6.67" x 2.63" x 1.4"

1.0 lb

239 mechanics apparatus case 1.4" x 2.63" x 6.67" (3.56 x 6.68 x 16.94 cm) 1.0 lbs (.45 kgs)

-40 ° to 149 ° F (-40 ° to 65 ° C); Ambient temperature inside the apparatus case

-40 ° to 122 ° F (-40 ° to 50 ° C); Ambient temperature outside the apparatus case

No condensation 5% to 95%

Telco Facility Carrier Serving Area

Network Interface

Central Office Chassis

Outside Plant Apparatus Case

Remote End Chassis

D1 HLXC

HDSL Repeater

Customer Premises

OHMS PER kft

83.3 51.9 32.4 16.1

OHMS @ MAXIMUM LOOP LENGTH

750 638 520 367

MAXIMUM LOOP FOR

35 dB LOSS

9.0 kft / 2.75 km 12.3 kft / 3.75 km 16.1 kft / 4.9 km 22.8 kft / 6.95 km

LOSS @

196 kHZ dB/kft

3.880 2.841 2.177 1.535

CABLE GAUGE

26/0.4 mm 24/0.51 mm 22/0.61 mm 19/0.91 mm NOTE: Loop limits are for a circuit with 6 dB nominal margin using PIC cable at 68 ° F.

• No load coils are present in the loops

• For 26 AWG cable (used alone or in combination with other gauge cables), the maximumallowable loop length, including bridge taps, is 9 kft

• If all cable is coarser than 26 AWG cable, the maximum allowable length, including bridgetaps, is 12 kft

• An HDSL repeater may be added to the HDSL span to double the transmission distance to

where L26 = total length of 26 AWG cable excluding bridge tap; and LBTAP = total length

of all bridge taps

In addition to the outside plant CSA loops, planning for an HDSL system should also take intoaccount the central office wiring In some installations, the drop and customer premiseswiring may have to be included as part of the network The HDSL loop limits for a variety ofcable gauges are summarized in the table below For detailed information about CSA designguidelines, refer to Bellcore TA-NWT-001210

HDSL Transmission

Facility Requirements

If a span does not meet CSA guidelines for HDSL, use the worksheets in the tables below todetermine whether the span still meets the following design criteria for HDSL:

HDSL Span Design Worksheet for Maximum 196 kHz Cable Loss @ 135 Ω

A Total 26 AWG cable length (kft):

B Calculate total 26 AWG Cable Loss:

C Total 24 AWG cable length (kft):

D Calculate total 24 AWG cable loss:

E Total 22 AWG cable length (kft):

F Calculate total 22 AWG cable loss:

G Total 19 AWG cable length (kft):

H Calculate total 19 AWG cable loss:

I Calculate total cable loss:

J Number of bridge taps:

K Calculate total bridged tap loss:

L Number of cable gauge changes:

M Calculate total cable change loss:

N Calculate total span loss:

IF TOTAL SPAN LOSS IS LESS THAN 35 dB, THE SPAN LOSS IS WITHIN SPECS Verify maximum DC loop resistance.

kft (A x 3.88) = dB

kft (C x 2.84) = dB

kft (E x 2.18) = dB

kft (G x 1.5) = dB (B+D+F+H) = dB

(J x 3.0) = dB

(L x 1.0) = dB (I + K + M) = dB

HDSL Span Design Worksheet for Maximum DC Loop Resistance

HDSL

Span Design

Worksheets

kft (A x 83) = Ω

kft (C x 52) = Ω

kft (E x 32) = Ω

kft (G x 16) = Ω

kft (I x 32) Ω

kft (K x 32) Ω

(B+D+F+H+J+L) =

A Total 26 AWG cable length (kft):

B Calculate 26 AWG DC loop resistance:

C Total 24 AWG cable length (kft):

D Calculate 24 AWG DC loop resistance:

E Total 22 AWG cable length (kft):

F Calculate 22 AWG DC loop resistance:

G Total 19 AWG cable length (kft):

H Calculate 19 AWG DC loop resistance:

I Cable length from MDF to Equipment Rack (kft):

J Calculate office loop resistance:

K Cable length: customer interface to HLXR (kft):

L Calculate customer premises loop resistance:

M Calculate total loop resistance:

IF TOTAL DC LOSS IS LESS THAN 800 Ω, THE SPAN LOSS IS WITHIN SPECS.

NOTE: When the HDSL repeater is deployed, each span calculation (HLXC to HRX and HRX to HLXR) must be calculated separately.

Powering

Considerations

The HLXR is loop powered

as shown below for fullduplex T1 transmission Inthis configuration, theHLXC supplies a constant -

130 Vdc to the span forpowering the HLXR

TRANSCEIVER 1

HLXC

TRANSCEIVER 2

LINE POWER

TRANSCEIVER 1

TRANSCEIVER 2

DC/DC CONVERTER POLARITY INSENSITIVE

T R

T1 R1

T1 R1

T R

LOOP 1

LOOP 2

-130 VDC GROUND

HLXR

Additionally, the HLXC is required to span power the combination of a mid span HDSLrepeater and the HLXR unit This feature require the loop power supply be capable of generat-ing +130 Vdc The HLXC utilizes software intelligence to determine when it is acceptable toenable the +130 Vdc potential on the loops The system will always default to using the -130Vdc output potential initially If the HDSL repeater is recognized after the loops are synchro-nized, then the loop power can be changed by software to +130 Vdc The repeater application

is the only scenario that requires the use of +130 Vdc

The HDSL system is compliant with Bellcore GR-1089-CORE Class A voltage specification

ADC’s HDSL system is transparent to any DS1 test method that uses maintenance relatedsignals carried in the DS1 payload or the facility data link channel in the extended superframeformat (ESF) The system has been designed to allow for testing that would be analogous tothose carried out on repeatered T1s over conventional copper based facilities

Both the HLXC and HLXR recognize and respond to 16-bit codes received either in a DS1framed or unframed format Framed codes will be recognized in either frame bit overwrite orframe bit insert mode A loopback acknowledgement feature has been added to the program-mable loopback scheme This feature is always enabled The acknowledgment sequence willuniquely identify the HDSL module as the physical location of the loopback point Loopbackscan also be performed via TL1 command, TBOS or a menu prompt on the User Craft Interface.Both the HLXC and HLXR will run a power-up self-test when power is initially applied to thecard The power-up self-test also verifies loop and DS1 integrity This will verify that the card isoperational with no internal hardware or software faults While this test is running, the frontpanel LED is yellow When the test is completed, the LED will turn green if no faults aredetected, and red if faults are detected

The HDSL transport technology is designed as an alternative to providing DS1 digital bipolartransmission over repeatered copper pairs HDSL allows for transmission on non-loaded,unrepeatered copper pairs for up to 12 Kft The simplicity of the HDSL system minimizesengineering and service installation time, dramatically reducing costs.

The HDSL system may be used to transport a variety of service up to the DS1 rate Some ofthese services include:

• Switched Multimegabit Data Service (SMDS)

• DS1 service for cell sites

SIDE

SIDE REPEATER

DS1

XCVR

HDSL FRAMER

HDSL XCVR

HDSL XCVR

HDSL FRAMER

DS1 XCVR HDSL

XCVR

HDSL FRAMER

HDSL FRAMER

HDSL XCVR

Activate/Deactivate By

Craft / TL1 / HLXR Front Panel Switch Craft / TL1 / 16 Bit Code

Craft / TL1 Craft / TL1 / 16 Bit Code Craft TL1

Craft / TL1 / 16 Bit Code / NID Code

Reverse Direction Signal

Network RCV – Network XMT AIS – CPE

Network RCV – Network XMT AIS – CPE

Network RCV – Network XMT AIS – CPE

The Repeater Loop Extender (RLX) module is used in repeatered orunrepeatered T1 carrier systems operating at a standard T1 signal rate (1.544Mbps) The module may be optioned with or without span powering capabil-ity The RLX is equipped with an automatic span power regulator (ASPR); thisoption is a 60 mA constant current supply that can deliver up to 130 Vdc toline repeaters or network interface devices (NIDs) Up to 28 RLX modules fitinto the Soneplex Broadband chassis.

The RLX+ incorporates +130 Vdc span power The RLX and RLX+ haveintelligent loopback features similar to the HLXC D1 module, respond toHeikemien loopbacks, and are capable of span powering modern intelligentrepeater modules

The network DSX interface is a bidirectional, industry standard DS1 interface(Bellcore TR-NTW-000499) for use with cable lengths up to 655 feet The DSXinterface monitors the received signal for loss of signal (LOS) and bipolarviolations (BPVs), as well as cyclic redundancy check (CRC) errors (extendedsuper frame [ESF] only) The received data is also monitored for both in-bandand ESF data link loop back codes and for ESF performance monitoring (PM)messages

The repeater interface is an industry standard, bidirectional long-haul DS1,bipolar interface This interface can deliver DS1 service over a minimumdistance of 3000 feet (using 22 AWG plastic insulated cable [PIC]) Thisinterface may be optioned to provide up to 8 watts of span power The repeaterinterface monitors the received signal for LOS and BPV as well as CRC-6errors (ESF only) When using ESF frame format, the receive line can bemonitored for data link loopback codes and PM messages

The RLX monitors, collects and reports DS1 performance to the mainprocessor unit, which in turn provides the interface to an operation support system (OSS).Other features of the RLX module include:

• Full duplex and fractional DS1 (individual DS0 blocking)

• D4, ESF framing, SLC®-96 and unframed capability

• Bidirectional monitoring of ESF data link

• Bipolar interface receivers monitored for LOS and BPVs

• Network receive data is monitored for in-band loop back codes (2-in-5, 3-in-5, and dual

16 bit)

• CRC-6 error monitoring on receive data streams

• Selectable channel blocking to 7F or FF hex

• Span power, 60 mA, -130 Vdc or +130 Vdc

V I-

LOS BER

R L X

LOS BER NET

LINE

+

The RLX+ span power option operates at a 60 mAconstant current supply that can deliver up to+130 Vdc (16 watts) to line repeaters or NIDs.

The RLX+ factory default setting is configured toprovide -130 Vdc loop power The system can bereconfigured for +130 Vdc by modifying a bergpin jumper setting on the module

The RLX and RLX+ module can supply 8 and 16 watts respectively of power to external units,i.e span repeaters or NIDs Certain span requirements must be met in order for simplexpower applications to work and several calculations must be made to insure proper design ofthe span line These calculations include:

RLX Module Span Powering

Input Power:

Span Power RLX:

SF, ESF, SLC ® -96 and unframed per TR-NWT-000499

0dB to -33dB -42.5 Vdc to -56.5 Vdc

Total Span Resistance = total loop cable resistance + total loop line repeater resistance + loop

resistance of office repeater Required Span Voltage = total span resistance x 60 mA

Based on the results of the two calculations from page 23, Table 1 illustrates the number ofspan repeaters that typically can be powered by the RLX ASPR (based on typical span resis-tances and 60 mA constant current source) This table is not intended for detailed spandesign.

DC SPAN POTENTIAL 21.72 35.16 48.60 62.04 75.48 88.92 102.36 115.80 129.24 142.68

SPAN RESISTANCE 362 586 810 1034 1258 1482 1706 1930 2154 2378

POSSIBLE NUMBER

OF LINE REPEATERS

1 2 3 4 5 6 7 8 9 10

Powering

Considerations

System Testing The RLX module recognizes several different loop back schemes used for both turn-up and

fault isolation procedures The network DSX-1 interface recognizes in-band “11000” loop-upand “11100” loop-down codes, as well as two 16 bit fixed loop-up and loop-down codes The 16bit codes are fully configurable through software to any 16 bit pattern The repeater lineinterface is monitored in both directions for data link codes and PM messages when usingESF frame format

The RLX also provides front panel voltage and current test points for measuring the looppower parameters

REPEATER INTERFACE MONITOR ESF DATA LINKREPEATER INTERFACE

AND PM MESSAGES

DSX INTERFACE

RLX MODULE

NETWORK

RLX Recognizes:

• Loop backs 2 in 5 (loop up)

• Loop backs 3 in 5 (loop down)

• Two (16 bit programmable loop backs)

• Hekimian Loopback codes

Applications The RLX module is designed to be used in applications where copper is the available transport

medium for DS1 service requirements Up to 28 RLX modules fit into the standard 23"Soneplex Broadband chassis This chassis can be used for hubbing in repeatered loop applica-tions, campus applications, and high rise building applications

The RLX module can also be used to transport a variety of services up to the DS1 rate,including:

• Switched Multimegabit Data Service (SMDS)

• DS1 service to cell sites

Building Applications

CO/CEV/HUT DS3

CUSTOMER A

CUSTOMER B

CUSTOMER C

3000' 3000'

SPAN LINES

SPAN LINES

SONEPLEX BROADBAND CHASSIS

The DLX module monitors and collects occurrences of DS1 loss of signal(LOS) and bipolar violations (BPVs) These parameters are reported both onthe DLX module’s front panel and to the main processor unit (MPU) whichreports to an operation support system (OSS).

®

STATUS LPBK

ENBL

RESET

DLX

LOS BER DS1

3 dB to -10 dB -42.5 Vdc to -56.5 Vdc 2.5 watts maximum -40 o C to 65 o C 4.4" x 0.7" x 9.2"

(11.76 x 1.78 x 23.37 cm) 6 lbs (.27 kg)

The Alarm Processor Unit (APU) and the Main Processor Unit (MPU)are the two common control modules contained within the

Soneplex Broadband system

The APU reports equipment and line failures via contact closure and LEDindication The APU module contains chassis alarm relays, alarm cut-off(ACO) circuitry and chassis power monitoring circuit Relays are providedfor both the audible and visual alarms with the alarm cut-off (ACO) functionprovided for the audible alarm relays A remote ACO input and ACO indica-tion contact output are available on the backplane The APU also providesmonitoring of alarm inputs to the system with eight housekeeping alarminputs Status of the alarms is reported via the MPU

LMPTST DISP RMT

(12.38 x 1.75 x 24.76 cm) 556 lbs (.252 kg)

Specifications

The MPU module contains a processor, memory and communicationsinterfaces to provide centralized system control and status/alarm reporting

This module is required for all system configurations

The MPU performs the following functions:

• Contains software to control the system

• Provides in-service software downloads

• Provides two serial EIA-232 configured ports for connection to the CraftInterface System (one DTE and one DCE)

• Provides X.25, TL1 and TBOS ports for connection to an OSS

• Derives and stores performance monitoring information on the chassisand remotes per ANSI T1.403

• Non-volatile memory to store system configuration information for up to

24 hours when CO -48 Vdc power is lost

• Controls the local alarm contacts and indicators on the APU

• Communicates via a serial data link to each module in the system

• Graphical loopbackThe MPU software version 6 provides the interface to the operations supportsystem and the control for the low speed optical DS2, HDSL, repeaters, T1sand DS1 extensions Additionally, the operation of the high speed SONET interfaces such asEC1 and VT mapper, and electrical DS3 are supported

The MPU software version 6 is backward compatible with existing deployment modules andprovides all the functionality designed into the version 3.1, 4.2 and 5.1 software The promi-nent feature upgrade is the system support of a SONET STS-1 interface, VT1.5 mapping ofDS1s, time slot assignment of 28 DS1s and SONET section, line and path performancemonitoring The system also supports the HDSL platform upgrade from version 5.1, particu-larly the HDSL repeater, remote craft interface, and a graphical loopback visual depicting thetransmission status Similar to version 4.2, the upgrade features the ability to provide dualhoming/path protection to remote QLX modules over the optical link The software offers acompressed TBOS mode which provides two scan displays for a total of 128 points Threevirtual circuits, which can be configured as either permanent (PVC) or switched (SVC), aresupported through the Soneplex X.25 feature

STATU

M P U

RESET

C R A F T

Specifications

Note: For non-SONET applications, version 5.1 is recommended

Loopback

An enhancement with MPU software version 5.1 or later is the ability to graphically depict loopbackconditions through the craft interface Loopback conditions may be activated and deactivated bythe craft person and verified visually within the same craft screen Each of the Soneplex modulesare depicted below The Loopback status screen on the left depicts the standard operation while thescreen on the right depicts an actual loopback condition

LOCAL COMMANDS

NETWORK

STATUS:

Unit Location – Loopback:

Unit Type:

Shelf: 1 Group: 1 Low Speed Loopback Status/Commands

Press CONTROL–A For Assistance

Unit Type:

Shelf: 1 Group: 1 Low Speed Loopback Status/Commands

Press CONTROL–A For Assistance

NETWORK

STATUS:

Unit Location – Loopback:

Unit Type:

Shelf: 1 Group: 6 Low Speed Loopback Status/Commands

Press CONTROL–A For Assistance

Unit Type:

Shelf: 1 Group: 6 Low Speed Loopback Status/Commands

Press CONTROL–A For Assistance

DS1#: 1

HLXC

net cust net cust net cust

HRX N/A

ACT NET HLXR

Low Speed Loopback Sample Screens (HLXC/HLXR)

LOCAL COMMANDS:

STATUS:

Unit Location – Loopback:

Unit Type:

Low Speed Loopback Status/Commands

Press CONTROL–A For Assistance

DS3MUX

net cust

LOCAL COMMANDS:

STATUS:

Unit Location – Loopback:

Unit Type:

Low Speed Loopback Status/Commands

Press CONTROL–A For Assistance

DS3MUX ACT NET

net cust

High Speed Loopback Sample Screens

The Test Access Unit (TAU) module is an optional maintenance device that provides bipolaraccess to DS1 signals between the DS3 MUX or VTMM and the low speed DS1 distributionmodules in the chassis It requires the C1 DS3 MUX or VTMM and MPU version 5.1 or 6.0system software respectively to be functional, and mounts into the slot labeled TAU in thehigh speed section of the chassis.

Test

Access Unit

Drop: None Insert: Customer

Drop: None Insert: Network

STS-1 or DS3

DS1s

RX TX TAU

EC1M/VTMM or DS3MUX

MODULES)

Drop: Network Insert: None

STS-1 or DS3

TAU

RX TX

MODULES)

DS1s

EC1M/VTMM or DS3MUX

STS-1 or DS3

TAU

RX TX

MODULES)

DS1s

EC1M/VTMM or DS3MUX

Drop: Customer Insert: None

STS-1 or DS3

TAU

RX TX

MODULES)

DS1s

EC1M/VTMM or DS3MUX

Test Access Unit

STS-1 or DS3

TAU

RX TX

MODULES)

DS1s

EC1MM/VTMM or DS3MUX

Drop: Customer Insert: Network

Drop: Network Insert: Customer

STS-1 or DS3

TAU

RX TX

MODULES)

DS1s

EC1M/VTMM or DS3MUX

Drop: Network Insert: Network

Drop: Customer Insert: Customer

STS-1 or DS3

TAU

RX TX

MODULES)

DS1s

EC1M/VTMM or DS3MUX

STS-1 or DS3

TAU

RX TX

MODULES)

DS1s

EC1M/VTMM or DS3MUX

The DS3 multiplexer module interfaces the Soneplex Broadband chassis to anexternal standard DS3 electrical signal One DS3 signal is fed to the SoneplexBroadband chassis and bridged to two redundant DS3 mux modules, provid-ing 1:1 high speed equipment protection The DS3 signal is demultiplexed to

28 DS1 signals and routed to the appropriate DS1 low speed module slots

The A2 DS3 MUX and the C1 DS3 MUX modules both perform the followingfunctions:

• Demultiplexes the incoming DS3 signal into 28 DS1 output signals

• Multiplexes 28 incoming DS1 signals into a DS3 output signal

• Transports both M13 and C-bit parity formats

• MPU software control and DS3 network loop back

• Provides 1:1 equipment protection switching

• Software controlled DS3 transmit line build-out and receive equalizationThe C1 DS3 MUX module performs the following functions in addition tothose listed above:

• Automatic system configuration backup and restore

• TAU module support

• Remote control capabilityThe module provides automatic protection switching (APS) when twoidentical modules are inserted into the chassis In this configuration, the APS

is non-revertive and bidirectional, and may be forced or disabled using frontpanel switches or through the MPU software Conditions for a working toprotect switch are:

• Working unit detects a receive DS3 loss-of-signal (LOS) or out-of-frame(OOF): the protect unit does not

• Working unit detects a transmit DS3 loss-of-signal

• Protect unit detects a failure in the working unitThe APS is completed within 50 msec of the decision to switch

LMPTST/ APS DS3 FAIL