Tài liệu Telecommunications docx

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I. Product List
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.
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I. Product List
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
Accessories
Soneplex fan and filter assembly
Replacement filter
Soneplex fan and fiber management panel
Battery back-up system for the four position chassis:
12.7 amp hours, UL 94-V.0
Panel to rack mount the battery back-up system in a 23" bay
Ultra PC fiber optic patch cord, SC to SC, 10 meters
Quad fiber optic patch cord, SC to SC, 10 meters
Quad fiber optic patch cord, SC to stub, 10 meters
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
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II. Platform Introduction
Today, network planners face a dilemma. Since the future of standards and services remains
unclear, 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 wastes
current resources and blocks future growth. The Soneplex
®
Intelligent DS1 Service Delivery
Platform lets you build today, while preserving future options.
The Soneplex

platform offers a modular architecture which supports copper and fiber optic
transport facilities in point-to-point and point-to-multipoint topologies.
By integrating network interface, access, and management functions, the Soneplex platform
substantially reduces your required inventory. The Soneplex platform lets you install the
facilities which will earn you revenue today, and add new ones as demand – and revenue
potential – grows. The modular design makes change, such as upgrade from asynchronous to
synchronous 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 a
critical edge as networks grow larger and more densely packed.
Most important, the Soneplex system keeps your options open. You can continue to use
existing 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 your
needs change, the Soneplex platform will evolve with you. Growth and change become part of
your strategic plan.
As networks are required to do more, cost less to operate, and perform more reliably, the
Soneplex system lets you build with confidence. The system accommodates a range of
asynchronous and SONET interfaces, DS3 and STS-1. Upgrade from copper to fiber can be as
simple 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 manage-
ment. The system provides simple, flexible access to the network for remote testing, and
monitors many aspects of the network measuring user-defined parameters and sending
alarms, or even rerouting traffic when error-rate thresholds are exceeded. These capabilities
can substantially reduce, or even eliminate, many of today’s costs of service initiation or

system maintenance.
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.
Introduction
Financially Sound
Soneplex System
Makes Sophistication
Simple
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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 and
monitoring devices. It simplifies installation, saves valuable space and eliminates multivendor
products. 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 synchro-
nous electrical input – an inexpensive form of connection to collocated equipment – performs
VT mapping, and has time-slot assignment capability.
The service distribution section of the system supports up to 28 modules for delivery of DS1
hicap service over conditioned or unconditioned copper or fiber facilities. High bit-rate digital
subscriber line (HDSL) modules perform 2B1Q conversions for transport of hicaps over non
repeater-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 an
alarm processor unit (APU). The system supports TBOS and TL1 interfaces for remote
connection 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 existing
copper infrastructure. Each HDSL module allows one DS1 signal to be transported up to
12,000 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. RLX
modules in the chassis will extend DS1s, and power up to 10 span repeaters on a single
unconditioned copper circuit. Each 19" shelf supports 20 modules. The standard Soneplex
shelf 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 to
seven customer sites can be supported by each Soneplex chassis. One optical module per site
provides 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 digital
loop carrier, T1 video using the latest compression techniques, fractional T1, and cell-site
connection for cellular telephony transmission.
The system’s remote OSS interface and onboard management capabilities make it ideal for
unstaffed sites or operations with limited staffing capabilities. Remote provisioning and
monitoring simplify setup and routing maintenance demands.
Realtime and historical performance monitoring, and remote loopback and bit-error testing
greatly reduce the demands on technical support personnel.
System Design and
Capabilities
II. Platform Introduction
Soneplex System
Application and
Operation
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II. Platform Introduction
• 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 infrastructure
while 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. Implement
what 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 time
consuming chores to the system itself. Technicians acclimate quickly, using familiar existing
support systems, and can access large areas of the network remotely.
As technology and the network grow and change, the Soneplex platform adapts quickly and
easily. Today’s rebuild becomes tomorrow’s card swap. Migration to fiber, SONET, and new
support systems becomes easy and economical. The Soneplex platform solves the network

planning dilemma.
Soneplex Platform:
Focus on Function
Soneplex Platform in
Summary
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III. System Introduction
The Soneplex Broadband system is a flexible, cost-effective platform which provides DS1
services in point-to-point or point-to-multipoint applications while providing a DS3 or STS-1
network interface. To meet the short turn-up intervals that exist in today’s competitive
market, different modules can be mixed within the chassis to match the transport facilities
already in place. These modules include the Optical DS2 (ODS2), the High bit-rate Digital
Subscriber Line Module (HLX), the Repeater Loop Extender Module (RLX), and the DS1 Loop
Extender (DLX).
The Soneplex Broadband system accepts a standard electrical DS3 or SONET STS-1 signal on
the 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 a
rack 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 speed
modules which extend up to 28 DS1 circuits over either copper or fiber. A main processor
unit (MPU) provides the interface from the transmission modules to the operation support
system (OSS). An alarm processor unit (APU) provides a critical/major/minor contact closure
appearance 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. An
inline 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 optic
link. This module is housed in the Soneplex Broadband chassis and interfaces with a QLX
module 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 or
unprotected fiber optic link. This module is located at the remote and interfaces with the
ODS2 modules located at the central location.
• DS1 Loop Extender: The DLX extends one DS1 up to 655' to a DSX-1.
Introduction
Description
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III. System Introduction
The Soneplex Broadband system provides a variety of interfaces for interconnection into office
alarm systems and operations centers. At the heart of this operations feature set is the direct
TL1 connection to the X.25 network. This connection is accomplished via a synchronous
output from an EIA-232 port controlled by the MPU. This port eliminates the need for an
intermediate Packet Assembler/Disassembler (PAD).
Operations
The rear of the Soneplex Broadband chassis has three serial interface ports. Port 1 supports an
EIA-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 is
also 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 either
permanent 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 remote
inventory via the craft interface terminal or remotely through dial-up access or X.25. Future

software upgrades to the Soneplex Broadband system are performed through a download
procedure, which may be accomplished locally through the craft interface or remotely
through dial-up access.
For external back-up protection of system parameters, the system can upload and download
from the MPU its specific configuration database. This operation is effected from a personal
computer 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 or
DS3 MUX Plus modules for database and restoral purposes. Therefore, if MPU replacement is
necessary, no external data transfer or back-up protection is required.
Administration
HSW TAUHSP MXW MXP
APU
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
1
R
P
T
R
H
R
X
H
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
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III. System Introduction
Modern maintenance philosophies center around the premise of being alerted to potential
service outages before the problem manifests itself. Through full-time DS1 performance
monitoring, the Soneplex Broadband system provides unparalleled insight into the actual
service level delivered to the customer. Extensive maintenance features are provided by the
Soneplex common equipment and the service modules themselves. Trouble isolation and

sectionalization is accomplished through loop backs. Front panel indications, along with
visual 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 or
laptop computer terminal. This capability is available remotely through dial-up access.
Protection switching architecture is employed on any service-affecting interface carrying
multiple DS1s. The high speed interfaces are all protected 1:1. The optical low speed interfaces
are protected 1+1.
The Test Access Unit (TAU) is an optional maintenance device that provides monitor and
intrusive test access to the DS1 channels in the chassis between the VTMM/DS3 MUX and the
low speed distribution modules (DLX, HLXC, ODS2, and RLX). Access is provided through
Bantam jacks on the TAU front panel and is controlled through the Craft Interface. The TAU
requires the B1 DS3 MUX and MPU Version 4.2 or later.
The DS3 Soneplex Remote Control System provides an embedded DS3 communications
channel between a DS3 mux installed in a remote Soneplex Broadband and a DS3
path terminating device located at the central office. The embedded channel provides remote
alarm hauling, performance monitoring and provisioning capabilities of the Soneplex Broad-
band shelf from the central office. Critical circuit information utilizing craft interface or TL1
can be collected from seven remote locations from a single point, eliminating the need for a
costly overlay network to transport data.
All provisioning is performed locally or remotely through the craft interface. Depending on
the 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 MPU
even 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 updated
automatically by each module in the Soneplex chassis.
A standard TL1 message set is supported through logical channels in the X.25 link. Customer
circuits may be enabled, disabled, reprovisioned, looped for trouble isolation or interrogated
for performance information via this link.
Provisioning

Maintenance
Remote Control
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III. System Introduction – Applications
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 network
interface to each chassis is one electrical DS3 or STS-1. DS1 distribution requirements may
vary 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 digital
subscriber line transmission technology.
• Customer C is fed up to four DS1s over a protected
fiber link.
Hubbing
Point-to-Multipoint
T1
SPAN LINE
CUSTOMER
PREMISES A
1 DS1
HDSL
2B1Q
1 DS1
CUSTOMER
PREMISES B
HLXR
CUSTOMER

PREMISES C
QLX
OPTICAL DS2
1-4 DS1s
QLX
•
•
•
CENTRAL OFFICE /
CEV / HUT / CABINET
NETWORK
INTERFACE
1 DS3
or
STS-1
SONEPLEX
BROADBAND CHASSIS
In this outside plant (OSP) application, DLC
cabinets are fed with protected or unprotected
optical DS2s, repeatered DS1s or DS1s using HDSL
transmission technology.
Outside Plant Cabinet
CABINET A
SUBSCRIBERS
OPTICAL DS2
DLC
CABINET B
DLC
T1
QLX

SUBSCRIBERS
CABINET A
DLC
HLXR
SUBSCRIBERS
HDSL
2B1Q
1 DS3
or
STS-1
SONEPLEX
BROADBAND CHASSIS
OUTSIDE PLANT CABINET
NETWORK
INTERFACE
In a second OSP application, DS1 hicap services are
hubbed from a cabinet. One or more Soneplex Broad-
band chassis can be mounted in the cabinet for DS1
distribution using fiber or copper facilities.
CABINET
SPAN LINE
CUSTOMER
PREMISES A
1 DS1
1 DS1
CUSTOMER
PREMISES C
1-4 DS1s
QLX
•

•
•
OPTICAL DS2
T1
HDSL
2B1Q
HLXR
SONEPLEX
BROADBAND
CHASSIS
CUSTOMER
PREMISES B
DS3 FLC DS3 FLC
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The Soneplex Broadband system can also be used in high rise
building applications to distribute hicap DS1s to various
floors utilizing the physical transport media available, either
copper or fiber optical riser cable. The Soneplex Broadband
chassis 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 signal
for interface with the Soneplex Broadband chassis.
OFFICE BUILDING
•
•
•
NID

DS3
1-4 DS1s
QLX
HLXR
SONEPLEX
BROADBAND
CHASSIS
REPEATERED DS1
OR DS1 EXTENSION
DS3 FLC
III. System Introduction – Applications
Tenant Services
The Soneplex Broadband
system is ideal for thin route
T1 applications which feed
cellular transport sites. As
the personal communication
system (PCS) market
expands, the requirement to
establish cell sites and
initiate service quickly is
essential. Most sites will
require one to two T1 lines.
The Soneplex Broadband
platform is ideal for this
application regardless of
whether the transport
medium is copper or fiber.
Cellular Site Feed
CELLULAR

SITE
OPTICAL DS2
24V POWER SUPPLY
CENTRAL OFFICE/
CEV/HUT/CABINET
BTS
CABINET A
HLXR
BTS
CABINET B
HLXR
HRX
HLXR
QLX
QLX
HDSL
2B1Q
NETWORK
INTERFACE
DS3
OR
STS-1
SONEPLEX
BROADBAND CHASSIS
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The Soneplex Broadband system with the STS-1 interface
allows a carrier to extend the SONET network to the cus-
tomer. Ideally connected to an add-drop multiplexer, the

Soneplex Broadband system provides VT1.5 mapper
and time-slot assignment of DS1s. Hairpinning VT1 signals
supported, eliminating the need to backhaul the STS-1signal.
III. System Introduction – Applications
SONET Ring
Often the Soneplex Broadband chassis is deployed at a remote site or CEV, stranding critical
performance information unless a costly overlay network is connected. With this remote
control system, provisioning and maintenance information is transferred from seven broad-
band chassis and can be accessed from a central location from a communications channel
access 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
ADMCCAS
ADM

ADM
SONEPLEX
BROADBAND
DS1s
DS3
REMOTE SITE or CEV
PC WORKSTATION
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IV. Modules – Access
Soneplex Optical DS2 Module
Low speed optical interface converts four DS1 signals into an optical DS2 for
delivery over a pair of singlemode fibers. A Quad Loop Extender (QLX) or Quad
Fiber Loop Converter (QFLC) is used at the remote location to convert the optical DS2 back to
four DS1s. If a QLX is used at the remote location, 1+1 protection is an option; otherwise the
protection is 1:1. The ODS2 provides BER threshold protection switching, far-end alarm
visibility 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 alarm
visibility and far-end housekeeping alarm transport back to the hubbing location.
HDSL Central Office Module
The HLXC supports one DS1 per module and provides conversion from DS1
electrical format to HDSL format (2B1Q), continuous monitoring on HDSL
loops, and -130 Vdc (
+130 Vdc if the HDSL repeater is present) loop power to the remote
HDSL module (HLXR). The module allows full duplex transmission up to 12,000' over two
unconditioned copper pairs. The HLXC provides far-end alarm visibility and full performance

monitoring. It also performs DS0 channel blocking.
HDSL Remote Modules
The remote HDSL module supports one DS1 per module, operates on line
power from the HLXC and specific models provide a -48 Vdc local power
option. It can also operate as an NID. The HLXR provides a 1.544 Mbps DSX-1 interface
toward the customer (ANSI T1.403-1990). The HLXR will recognize and activate on in-band
loop back codes.
HDSL Repeater Module
The HDSL repeater module supports one DS1 per module and operates on
+130 volt line power from the HLXC. The HDSL repeater extends the HDSL
technology beyond the Carrier Serving Area to a maximum distance of 24 kft.
Repeater Loop Extender Module
The RLX supports one DS1 per module and can be optioned as an automatic
span power repeater (ASPR) or as a long haul DS1 interface to a DSX. The RLX
provides full performance monitoring and performs DS0 channel blocking.
DS1 Loop Extender Module
The DLX supports one DS1 per module. This access module is designed to drop
one DS1 signal to a DSX-1 or another piece of network equipment with a
standard DS1 interface.
ODS2
Description
QLX
HLXC
HRX
DLX
RLX
HLXR
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IV. Modules – Access
Optical DS2
Extensions
ODS2 and
Quad Loop Extender
Access Modules
QLX Module
STATUS
REMOTE
DS1 STATUS
1234
ENABLE
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 config-
ured for optical DS2 extensions by provisioning
an ODS2 access module in the Soneplex Broad-
band central office chassis and a Quad Loop
Extender (QLX) module at the remote end.
The ODS2 access module multiplexes up to
four DS1 signals for simultaneous two-way
(full duplex) transport over two singlemode
optical fibers to a remote QLX module. The
QLX module demultiplexes the signal to
four DS1 circuits. The system can be
configured for either unprotected or 1:1
protection. In an unprotected configuration,
one ODS2 module is deployed at the CO and
one QLX module is deployed at the remote
site. In a protected configuration, two ODS2
modules are deployed at the CO and two
QLX modules are deployed at the remote
site. Seven protected or unprotected systems
can fit into the Soneplex Broadband chassis.
Each DS1 circuit can be provisioned for
either 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 BER
switching 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, in
conjunction with the craft performance monitoring module (CPM) monitors, collects and
reports DS1 line and path performance to the embedded operations support. The main
processor 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 alarm
visibility
• 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
X
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
X
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IV. Modules – Access
The optical DS2 system can operate in either protect or unprotect modes. In both modes, all
four DS1s are recovered from the optical link and will be delivered to the customer access
point.
In a protected link, the optical DS2 system can be optioned, through software commands, for
either line or path protection switching. Line protection switching refers to group-switching
all four DS1s from the working to the protect modules. Path protection switching involves
evaluating each DS1 on an individual basis and switching individual DS1s between two
remote 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 the
protected 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 the
CPM for evaluation and the best signal of each pair is
chosen to be delivered to the customer.
Individual DS1 circuits can be looped back remotely.
Initiating a command from the craft interface to
loopback a remote DS1 signal sends a proprietary loop
back command over the fiber to the far-end, looping
back 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:
• Private DS1 lines
• Switched DS1
• Compressed video
• ISDN Primary Rate Access
• LAN interconnections
• Switched Multimegabit Data Service (SMDS)
• DS1 service to cell sites
Optical DS2
Extensions
Protection Switching
OUT
IN
Q
L
X
JACK
ACCESS
PANEL
REMOTE QLX FOUR POSITION CHASSIS
LTU
Loopback
Applications
15 3/97
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IV. Modules – Access
4
1.544 Mbps ± 200 bps
AMI or B8ZS

SF, ESF, SLC
®
-96 and unframed
9/125 µm 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
4.385" x 1.375" x 9.155" (11.14 x 3.49 x 23.25 cm)
DS1/System:
DS1 Line Rate:
DS1 Line Code:
DS1 Frame Formats:
Fiber:
Fiber – Unprotected System:
Fiber – Protected System:
Wavelength:
Optical Budget:
Transmission Distance:
Fiber Connector:
Remote QLX Chassis:

Power Consumption:
Operating Temperature:
Dimensions (HxWxD):
Short Range ODS2
Specifications
4
1.544 Mbps ± 200 bps
AMI or B8ZS
SF, ESF, SLC
®
-96 and unframed
9/125 µm singlemode
2
4
1310 nm
10.5 dB
5 miles (maximum)
FC, SC
DS1/System:
DS1 Line Rate:
DS1 Line Code:
DS1 Frame Formats:
Fiber:
Fiber – Unprotected System:
Fiber – Protected System:
Wavelength:
Optical Budget:
Transmission Distance:
Fiber Connector:
Standard ODS2

Specifications
16 3/97
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The QLX can operate in either protect or unprotect modes. In both modes, all four DS1s are
recovered from the optical link and will be delivered to the customer access point.
QLX Module
Protection Switching
IV. Modules – Access
Short Range QLX
Specifications
4
1.544 Mbps ± 200 bps
AMI or B8ZS
SF, ESF, SLC
®
-96 and unframed
9/125 µm singlemode
2
4
1310 nm
10.5 dB
5 miles (maximum)
FC, SC
DS1/System:
DS1 Line Rate:
DS1 Line Code:
DS1 Frame Formats:
Fiber:
Fiber – Unprotected System:

Fiber – Protected System:
Wavelength:
Optical Budget:
Transmission Distance:
Fiber Connector:
A majority of cellular sites and PCS BTSs are being constructed with 24 Vdc sources as the
primary power supply. The requirement to feed this growing application over a fiber network
demands a system which could operate with a 24 Vdc power feed. Unique QLX, CPM and APU
modules have been developed, which can be deployed in the 2 position QLX chassis and
powered by 24 Vdc. The system functionality and performance features are identical to the
standard QLX platform.
4
1.544 Mbps ± 200 bps
AMI or B8ZS
SF, ESF, SLC
®
-96 and unframed
9/125 µm 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
4.385" x 1.375" x 9.155" (11.14 x 3.49 x 23.25 cm)
DS1/System:
DS1 Line Rate:
DS1 Line Code:
DS1 Frame Formats:
Fiber:
Fiber – Unprotected System:
Fiber – Protected System:
Wavelength:
Optical Budget:
Transmission Distance:
Fiber Connector:
CO Chassis:
Remote Chassis:
Power Consumption:
Operating Temperature:
Dimensions (HxWxD):
Standard QLX
Specifications
24 Vdc QLX Remote
Platform
Specifications
+20.0 to +30.0 Vdc
220 mA typical @ +24V
250 mA max @ +24V
380 mA max @ +20V
180 mA max @ +24V
Supply Voltage:

QLX Supply Current:
APU Input Current:
CPM Input Current:
The 24 Vdc QLX platform specifications are identical to the standard QLX module except
where identified below:
24 VDC QLX
Remote Platform
17 3/97
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IV. Modules – Access
HDSL
Description
EC1M VTMM
ADC’s High bit-rate Digital Subscriber Line (HDSL)
module provides full duplex DS1 transmission over
two unconditioned, non-loaded copper loops up to
12 kft, meeting Carrier Serving Area (CSA) guide-
lines. Each of the two wire pairs carries one half of
the net payload plus system overhead. Each pair
carries 784 Kbps in both directions simultaneously.
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 DS1
signal and the HDSL 2B1Q line code. The HLXC monitors, collects and reports DS1 and
HDSL line and path performance to the main processor unit which in turn provides the
interface to an operation support system (OSS). The HLXC also communicates with the
remote HDSL module (HLXR) via the HDSL embedded operation channel (EOC) which is
defined 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 DS1
signal and the facility HDSL 2B1Q line code. The HLXR customer side interface is per ANSI
T1.403. The DS1 line performance is monitored by the HLXR and reported to the HLXC via

the EOC. OSS information from the HLXR can be obtained through the craft interface on the
HLXR front panel or the MPU located at the CO.
Four unique versions of the HLXR offer incremental feature enhancements directed at specific
customer requirements. All units are packaged for single slot deployment in 400 style chassis
and possess a craft interface on the front panel for circuit monitoring and provisioning. All
systems 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
RESET
LMPTST/
APS
ENABLE
ONLINE
STATUS
VTMM
APS
LOCKOUT
FORCE
STS-1
LOS
RESET

LMPTST/
APS
LPBK
ENABLE
ONLINE
STATUS
EC1M
APS
LOCKOUT
FORCE
SYNC
HLDOVR
18 3/97
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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 Attenuation
parameters 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 the
MPU 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 set
which match the earlier functionality
• Programmable loopback expanded to HLXC recognizes 16-bit codes in DS1 framed or
unframed format. When framed, the codes are recognized in either frame bit over
write or frame bit insert mode.
IV. Modules – Access
HDSL
Specifications
DS1/System:
DS1 Line Rate:
DS1 Line Code:
DS1 Frame Formats:
HDSL Loop Rate:
HDSL Line Code:
HDSL Loop Character:
CO Chassis:
Remote Chassis:
Loop Power:
Power Consumption:
Operating Temperature:
HLXC
System Compatibility:
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)
19 3/97
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317/97 11:00 am
IV. Modules – Access
The HDSL repeater will reside between the HLXC and
HLXR. Two separate HDSL facility segments will
be created; the first between the central
office and the repeater, and the second
between the repeater and the remote site.
Each of the two HDSL segments in the
repeater application will be capable of
reaching 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 in
the outside plant environment using a 239-type apparatus case
with double-wide slots. Only one HDSL repeater may be deployed
along 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
2NC
3 LOOP 1 RING
4 LOOP 1 TIP

5 LOOP 1 RING
6 LOOP 1 TIP
7NC
8 LOOP 2 RING
9 LOOP 2 TIP
10 NC
11 LOOP 2 RING
12 LOOP 2 TIP
CUSTOMER
NETWORK
NETWORK
CUSTOMER
HDSL Repeater
Description
HRX Repeater
Specifications
HDSL Interface
Output Signal Level:
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
Up to 12kft Up to 12kft
Remote End

Chassis
D1
HLXC
HDSL
Repeater
HDSL HDSL
Version D
HLXR
Customer
Premises
DS1 DS1
20 3/97
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IV. Modules – Access
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.
]
(3 x L26)
9 – LBTAP
[
The HDSL module provides full duplex transmission over two unconditioned, non-loaded
copper loops. This can be done without repeaters and without removing bridge taps or other
conditioning of the cable, as long as the loops meet the Carrier Serving Area (CSA) guidelines.
CSA rules describe the length and make-up of such loops:
• No load coils are present in the loops.
• For 26 AWG cable (used alone or in combination with other gauge cables), the maximum
allowable loop length, including bridge taps, is 9 kft.
• If all cable is coarser than 26 AWG cable, the maximum allowable length, including bridge

taps, is 12 kft.
• An HDSL repeater may be added to the HDSL span to double the transmission distance to
a maximum of 24 kft.
• Any single bridged tap is limited to 2 kft maximum length and the total length of all bridge
taps is limited to 2.5 kft maximum length.
• The total length of multigauge cable containing 26-gauge cable must not exceed:
12 – kft
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 into
account the central office wiring. In some installations, the drop and customer premises
wiring may have to be included as part of the network. The HDSL loop limits for a variety of
cable gauges are summarized in the table below. For detailed information about CSA design
guidelines, refer to Bellcore TA-NWT-001210.
HDSL Transmission
Facility Requirements
21 3/97
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317/97 11:00 am
If a span does not meet CSA guidelines for HDSL, use the worksheets in the tables below to
determine whether the span still meets the following design criteria for HDSL:
HDSL Span Design Worksheet for
Maximum 196 kHz Cable Loss @ 135
Ω
IV. Modules – Access
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.

22 3/97
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IV. Modules – Access
HDSL
Powering
Considerations
The HLXR is loop powered
as shown below for full
duplex T1 transmission. In
this configuration, the
HLXC supplies a constant -
130 Vdc to the span for
powering 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 HDSL
repeater 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 to
enable the +130 Vdc potential on the loops. The system will always default to using the -130
Vdc 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
in all applications.
The D1 HLXR can optionally accept a local -48 Vdc supply. This configuration would fully
support fractional rate applications via single loop provisioning. Individual DS0 channels can
be blocked, adding to the utility of the T1 support. With single loop provisioning, 12 or fewer
DS0 channels can be supported over a single pair of wires between the HLXC and the HLXR.
Both the HLXC and the HLXR units provide voltage and current test points for measuring the
loop power parameters. The HLXR provides full DS1 splitting and monitor test access via jacks

mounted directly on the front panel of the module.
ADC’s HDSL system is transparent to any DS1 test method that uses maintenance related
signals carried in the DS1 payload or the facility data link channel in the extended superframe
format (ESF). The system has been designed to allow for testing that would be analogous to
those 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 DS1
framed or unframed format. Framed codes will be recognized in either frame bit overwrite or
frame bit insert mode. A loopback acknowledgement feature has been added to the program-
mable loopback scheme. This feature is always enabled. The acknowledgment sequence will
uniquely identify the HDSL module as the physical location of the loopback point. Loopbacks
can 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 the
card. The power-up self-test also verifies loop and DS1 integrity. This will verify that the card is
operational with no internal hardware or software faults. While this test is running, the front
panel LED is yellow. When the test is completed, the LED will turn green if no faults are
detected, and red if faults are detected.
Remote Local
Powering
System Testing
HDSL Loop Powering for Non-Repeater Applications
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III. Modules – Access
The HDSL transport technology is designed as an alternative to providing DS1 digital bipolar
transmission 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 minimizes
engineering 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 of
these services include:

• Private DS1 lines
• Switched DS1
• Compressed video
• ISDN Primary Rate Access
• LAN interconnections
• Fractional DS1
• Switched Multimegabit Data Service (SMDS)
• DS1 service for cell sites
HDSL
Applications
HDSL Loop Back Implementation
4 3
2 1 56
HLXCNETWORK
SIDE
HLXR CPE
SIDE
REPEATER
DS1
DS1
DS1
XCVR
HDSL
FRAMER
HDSL
XCVR
HDSL
XCVR
HDSL
FRAMER

DS1
XCVR
HDSL
XCVR
HDSL
FRAMER
HDSL
FRAMER
HDSL
XCVR
Loopback Type
HLXC Customer
HLXC Network
Repeater Customer
Repeater Network
HLXR Customer
HLXR Network
Loopback Location
DS1 Transceiver
HDSL Framer
HDSL Framer (R-side)
HDSL Framer (R-side)
HDSL Framer
DS1 Transceiver
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
24 3/97
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IV. Modules – Access
The Repeater Loop Extender (RLX) module is used in repeatered or
unrepeatered T1 carrier systems operating at a standard T1 signal rate (1.544
Mbps). The module may be optioned with or without span powering capabil-
ity. The RLX is equipped with an automatic span power regulator (ASPR); this
option is a 60 mA constant current supply that can deliver up to 130 Vdc to
line repeaters or network interface devices (NIDs). Up to 28 RLX modules fit
into the Soneplex Broadband chassis.
The RLX+ incorporates
+130 Vdc span power. The RLX and RLX+ have
intelligent loopback features similar to the HLXC D1 module, respond to
Heikemien loopbacks, and are capable of span powering modern intelligent
repeater 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 DSX
interface monitors the received signal for loss of signal (LOS) and bipolar
violations (BPVs), as well as cyclic redundancy check (CRC) errors (extended
super frame [ESF] only). The received data is also monitored for both in-band
and 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 minimum
distance of 3000 feet (using 22 AWG plastic insulated cable [PIC]). This
interface may be optioned to provide up to 8 watts of span power. The repeater
interface monitors the received signal for LOS and BPV as well as CRC-6
errors (ESF only). When using ESF frame format, the receive line can be
monitored for data link loopback codes and PM messages.
The RLX monitors, collects and reports DS1 performance to the main
processor 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
Repeater Loop
Extender Module
Description
RLX+
LPBK
STAT
V -

I-
I+
V+
LOS
BER
R
L
X
LOS
BER
NET
LINE
+
25 3/97
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317/97 11:00 am
IV. Modules – Access
Specifications
Powering
Considerations
The RLX and RLX+ input power is -48 Vdc and
may be optioned to provide span power. The RLX
span power option is a 60 mA constant current
supply that can deliver up to -130 Vdc (8 watts) to
line repeaters or NIDs.
The RLX+ span power option operates at a 60 mA
constant current supply that can deliver up to
+130 Vdc (16 watts) to line repeaters or NIDs.
The RLX+ factory default setting is configured to
provide -130 Vdc loop power. The system can be

reconfigured for
+130 Vdc by modifying a berg
pin 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 simplex
power applications to work and several calculations must be made to insure proper design of
the span line. These calculations include:
RLX Module Span Powering
ASPR
T
R
R
T
T
R
R
T
+
_
DS1 Per System:
DS1 Line Rate:
DS1 Line Code:
DS1 Frame Formats:
DSX-1 Interface:
Repeater Interface
Input Level:
Input Power:
Span Power
RLX:
RLX+:

Power Consumption:
Operating Temperature:
Dimensions (HxWxD):
Weight:
1
1.544 Mbps ± 200 bps
AMI and B8ZS
SF, ESF, SLC
®
-96 and unframed
per TR-NWT-000499
0dB to -33dB
-42.5 Vdc to -56.5 Vdc
60 mA -130 Vdc maximum
60 mA
+130 Vdc maximum
14 watts maximum with span power enabled; 5 watts
maximum without span power
-40
o
C to +65
o
C
4.385" x .675" x 9.75" (11.14 x 1.7 x 24.76 cm)
.9 lbs (.41 kg)
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