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  • www.raisecom.com

    RC1102-FE (B) User Manual

  • Legal Notices

    Raisecom Technology Co., Ltd makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Raisecom Technology Co., Ltd shall not be held liable for errors contained herein or direct, indirect, special, incidental or consequential damages in connection with the furnishing, performance, or use of this material.

    Warranty.

    A copy of the specific warranty terms applicable to your Raisecom product and replacement parts can be obtained from Service Office.

    Restricted Rights Legend.

    All rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Raisecom Technology Co., Ltd. The information contained in this document is subject to change without notice.

    Copyright Notices.

    Copyright 2007 Raisecom. All rights reserved. No part of this publication may be excerpted, reproduced, translated or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in Writing from Raisecom Technology Co., Ltd.

    Trademark Notices

    is the trademark of Raisecom Technology Co., Ltd.

    Java is a U.S. trademark of Sun Microsystems, Inc.

    Microsoft is a U.S. registered trademark of Microsoft Corporation.

    Windows NT is a U.S. registered trademark of Microsoft Corporation.

    Windows 2000 is a U.S. registered trademark of Microsoft Corporation.

    Windows XP is a U.S. registered trademark of Microsoft Corporation.

    Windows and MS Windows are U.S. registered trademarks of

    Microsoft Corporation.

  • Contact Information

    Technical Assistance Center

    The Raisecom TAC is available to all customers who need technical assistance with a Raisecom product, technology, or, solution. You can communicate with us through the following methods:

    Address: 2nd Floor, South Building of Rainbow Plaza, No.11 Shangdi Information Road, Haidian District, Beijing 100085

    Tel: +86-10-82883305

    Fax: +86-10-82883056

    World Wide Web

    You can access the most current Raisecom product information on the World Wide Web at the following URL:

    http://www.raisecom.com

    Feedback

    Comments and questions about how the RC1102-FE device works are welcomed. Please review the FAQ in the related manual, and if your question is not covered, send email by using the following web page:

    http://www.raisecom.com/en/xcontactus/contactus.htm.

    If you have comments on the RC1102-FE specification, instead of the web page above, please send comments to:

    [email protected]

    We hope to hear from you!

  • CONTENTS Release Notes------------------------------------------------------------------------------------------------- 5 Chapter 1 System Overview -------------------------------------------------------------------------- 1

    1.1 Overview-------------------------------------------------------------------------------------------------------------------------1 1.2 Function feature ---------------------------------------------------------------------------------------------------------------1 1.3 Ordering Information----------------------------------------------------------------------------------------------------------1

    Chapter 2 Parameters ---------------------------------------------------------------------------------- 2 2.1 Characteristic-------------------------------------------------------------------------------------------------------------------2

    Chapter 3 Installation and Deployment ----------------------------------------------------------- 3 3.1 Transmission Cable-----------------------------------------------------------------------------------------------------------3 3.2 Cable Description -------------------------------------------------------------------------------------------------------------3 3.3 Interconnection with other device -----------------------------------------------------------------------------------------3 3.4 G.SHDSL Interface------------------------------------------------------------------------------------------------------------3 3.5 Connecting with Other Type Device --------------------------------------------------------------------------------------3 3.6 Installation in Chassis --------------------------------------------------------------------------------------------------------4 3.7 DC Power Supply Installation ----------------------------------------------------------------------------------------------4 3.8 Power Supply Requirement-------------------------------------------------------------------------------------------------4

    Chapter 4 Indicator Description--------------------------------------------------------------------- 5 4.1 Front Panel----------------------------------------------------------------------------------------------------------------------5 4.2 16-slot Chassis Front Panel ------------------------------------------------------------------------------------------------6

    Chapter 5 Dip-switch Configuration --------------------------------------------------------------- 7 5.1 Function Configuration Dip-switch SW1---------------------------------------------------------------------------------7 5.2 Configuration of Dip-Switch by default-----------------------------------------------------------------------------------8

    Chapter 6 Network Management-------------------------------------------------------------------- 9 6.1 Show Module -------------------------------------------------------------------------------------------------------------------9 6.2 Configure Module ----------------------------------------------------------------------------------------------------------- 11 6.3 Loop-back Test Command ------------------------------------------------------------------------------------------------ 11 6.4 Module Reset Command--------------------------------------------------------------------------------------------------12 6.5 BER Test Command --------------------------------------------------------------------------------------------------------12

    Appendix A Acronyms ----------------------------------------------------------------------------------13 Appendix B FAQ--------------------------------------------------------------------------------------14

  • Release Notes

    Date of Release Manual Version Revisions

    20080222 200711 1. Chapter 5, Dip-switch configuration of SW1, SW2 function configuration and configuration by default.

    2. Chapter 6, 6.2 configuration relation of ANNEX, coding mode and SHDSL interface speed.

  • General Safety Instructions The following instructions serve as a general guide for the safe installation and operation of telecommunications products. Additional instructions, if applicable, are included inside the manual.

    Safety Symbols

    This symbol may appear on the equipment or in the text. It indicates potential safety hazards regarding product operation or maintenance to operator or service personnel.

    Danger of electric shock! Avoid any contact with the marked surface while the product is energized or connected to outdoor telecommunication lines.

    Protective earth: the marked lug or terminal should be connected to the building protective earth bus.

    Some products may be equipped with a laser diode. In such cases, a label with the laser class and other warnings as applicable will be attached near the optical transmitter. The laser warning symbol may be also attached. Please observe the following precautions: Before turning on the chassis with optic module, make sure that the fiber optic cable is intact and is connected to the transmitter. Do not attempt to adjust the laser drive current.

    Do not use broken or unterminated fiber-optic cables/connectors or look straight at the laser beam.

    The use of optical devices with the equipment will increase eye hazard. Use of controls, adjustments or performing procedures other than those specified herein, may result in hazardous radiation exposure. ATTENTION: The laser beam may be invisible!

    Always observe standard safety precautions during installation, operation and maintenance of this product. Only qualified and authorized service personnel should carry out adjustment, maintenance or repairs to this product. No installation, adjustment, maintenance or repairs should be performed by either the operator or the user.

    All extension slots are not hot-swappable

    Before operating modules in the electricity conditions, please be noticed that optical modules shall be connected with optical fiber wires or shield with optical module cover for fear that laser light harms to operators eyes.

    Handling Energized Products

    General Safety Practices Do not touch or tamper with the power supply when the power cord is connected. Line voltages may

  • be present inside certain products even when the power switch (if installed) is in the OFF position or a fuse is blown. For DC-powered products, although the voltages levels are usually not hazardous, energy hazards may still exist. Before working on equipment connected to power lines or telecommunication lines, remove jewelry or any other metallic object that may come into contact with energized parts. Unless otherwise specified, all products are intended to be grounded during normal use. Grounding is provided by connecting the mains plug to a wall socket with a protective earth terminal. If an earth lug is provided on the product, it should be connected to the protective earth at all times, by a wire with a diameter of 18 AWG or wider. Rack-mounted equipment should be mounted only in earthed racks and cabinets. Always make the ground connection first and disconnect it last. Do not connect telecommunication cables to ungrounded equipment. Make sure that all other cables are disconnected before disconnecting the ground.

    Connection of AC Mains Make sure that the electrical installation complies with local codes. Always connect the AC plug to a wall socket with a protective ground. Always connect the power cord first to the equipment and then to the wall socket. If a power switch is provided in the equipment, set it to the OFF position. If the power cord cannot be readily disconnected in case of emergency, make sure that a readily accessible circuit breaker or emergency switch is installed in the building installation.

    Connection of DC Mains Unless otherwise specified in the manual, the DC input to the equipment is floating in reference to the ground. Any single pole can be externally grounded. Due to the high current capability of DC mains systems, care should be taken when connecting the DC supply to avoid short-circuits and fire hazards. DC units should be installed in a restricted access area, i.e. an area where access is authorized only to qualified service and maintenance personnel. Make sure that the DC supply is electrically isolated from any AC source and that the installation complies with the local codes. Before connecting the DC supply wires, ensure that power is removed from the DC circuit. Locate the circuit breaker of the panel board that services the equipment and switch it to the OFF position. When connecting the DC supply wires, first connect the ground wire to the corresponding terminal, then the positive pole and last the negative pole. Switch the circuit breaker back to the ON position. A readily accessible disconnect device that is suitably rated and approved should be incorporated in the building installation.

    Preventing Electrostatic Discharge Damage

    Modules which can be plugged into chassis are sensitive to damage from static electricity. Conversely, static voltages as high as 35,000V can be generated just by handling plastic or foam packing material, or by sliding assemblies across plastic and carpets. Not exercising the proper electrostatic discharge (ESD) precautions can result in intermittent or complete component failures. To minimize the potential for ESD damage, observe the following guidelines: Always use an ESD-preventive antistatic wrist strap or ankle strap and ensure that it makes good skin contact. When removing or installing a component, make sure the equipment end of your antistatic strap leash is connected to the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis. Avoid contact between the component and your clothing. The wrist strap only protects the component from ESD voltages on the body; ESD voltages on your clothing can still cause component damage. Always place a card component-side-up on an antistatic surface, in an antistatic card rack, or in a static shielding bag. If you are returning the item to the factory, immediately place it in a static shielding bag. Handle Modules by the metal card carrier edges only; Avoid touching the board or any connector pins.

  • www.raisecom.com User Manual

    1

    Chapter 1 System Overview

    This section includes:

    Overview Function Feature Ordering Information

    1.1 Overview

    RC1102-FE is an interface converter of G.SHDSL modem. This device uses a pair of audio-twisted pair as transmission cable; the Ethernet transmission distance can reach over 4 km when cable speed is 2M. In case of .bis function enable, at speed of 5.6M can enable Ethernet circuit extend to over 2 km.

    The serialized design gives RC1102-FE high intelligent and can be connected with other types devices. This device is a module device with high reliability, taking up less space for installing, lower power consumption and easy to operate and maintenance. It can be plugged into RC002-16 with rack of 19 inches 3U standard chassis, to deploy with 15 pieces card or be used independently at client side cooperating with single slot chassis RC001-1. NView network management system enables client to realize full deployment and monitory both for remote and central office devices.

    1.2 Function feature

    Single line pair transmission: 0.4mm speed at 2Mbit/S for transmission distance of 4KM; 5.6Mbit/S for 2KM.

    Transmission speed controllable: 64Kbit/s-5696Kbit/s, depend on transmitting distance and circuit quality.

    Duplex mode: full-duplex, the echoed signal be counteracted. Interface speed: 10/100M Ethernet. Remote configuration and network management function. Excellent cool function.

    1.3 Ordering Information

    Description of RC1102-FE(B):

    Part Number Description

    RC1102-FE (B) Modular type, remote network management for both central office and Premise Side, 10/100Mbps auto-negotiation, G.SHDSL.bis, transmission distance 0-4km, RJ45/BNC

    Note: .bis function is available if only RC1102-FE(B)connected with the same type device.

  • www.raisecom.com User Manual

    2

    Chapter 2 Parameters

    This section contains the following information:

    Characteristic

    2.1 Characteristic

    Dimension 91mm x 25mm x 152mm

    Interface RJ45

    Working Temperature () (0, 45)

    Storing Temperature () (-40, 75)

    Consumption(W) 5W

    Humidity 5%~95% ( no condensation)

  • www.raisecom.com User Manual

    3

    Chapter 3 Installation and Deployment

    This section contains the following information:

    Transmission Cable Cable Description G.SHDSL Interface Interconnect with other devices Connecting with Other Type Device Installing in Chassis DC Power Supply Installation Power Supply Requirement

    3.1 Transmission Cable

    G.SHDSL interface uses RJ45 or RJ45connector, and link with the 4th and 5th pin of RJ45 or RJ45 connectors.

    3.2 Cable Description

    Telephone cable: 26AWG 0.4mm, or the same as the metric system.

    3.3 Interconnection with other device

    The central office device and client side device must be both RC1102-FE(B) otherwise the link cannot connect well or data can not be transmitted in order.

    3.4 G.SHDSL Interface

    The below conditions should be satisfied for connecting of G.SHDSL interface:

    STU-C and STU-R must connects in pairs; Speed range of different interface is the same; Coding modes are configured the same; ANNEX modes are identical.

    3.5 Connecting with Other Type Device

    Connecting the RC1102-FE(B) with transceiver by class 5 twisted pair, the twisted pair must less than 100m.

    Since the electrical interface of RC1102-FE(B) is auto-negotiation mode, other devices connecting with it must configured the electrical interface to be auto-negotiation to ensure transmitting data in order.

    Configuring the electrical interface as below table shows to ensure data be transmitted in order when RC1102-FE(B) is manual mode.

    RC1102-FE(B) electrical interface Other device electrical interface

    100M/full-duplex 100M/full-duplex

    100M/half-duplex 100M/half-duplex

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    4

    -48V 0V

    10M/full-duplex 10M/full-duplex

    10M/half-duplex 10M/half-duplex

    RC1102-FE(B) electrical interface can recognize line arrangement (cross line/straight connect line auto-negotiation) when it is in auto-negotiation mode. In this case, other connected device adopt cross line/straight connect line for connection.

    The recognize function (cross line/straight connect line auto-negotiation) may be invalid in manual mode; in this case, it is recommended to connect other devices as the below table:

    Interface converter Other devices RJ45 interface

    RC1102-FE(B) Ethernet Switch straight connect

    RC1102-FE(B) HUB straight connect

    RC1102-FE(B) Router cross connect

    RC1102-FE(B) Network card cross connect

    3.6 Installation in Chassis

    Installing to chassis is shown in the following figure:

    3.7 DC Power Supply Installation

    DC power has three connecting terminals: -48V, grounding and 0V which are connected directly with -48V power wire, protection grounding and 0V power wire, as the figure on the right shows.

    3.8 Power Supply Requirement

    AC 220V/50Hz or DC-48V

  • www.raisecom.com User Manual

    5

    Chapter 4 Indicator Description

    This section contains the following information:

    Front Panel 16-slot Chassis indicators

    4.1 Front Panel

    Sketch map of front panel:

    Indicators and their description:

    Interface

    Type

    Indicator

    Meaning

    Indicator

    Name

    Indicator and Device Status

    Power

    Supply

    Power Indicator PWR Steady light: Power Normal;

    Off: Power Error.

    Electric

    connecting/data

    transmission

    LNK/ACT Steady light: electrical interface link

    up normal;

    Off: link down

    Flashing: data transmitting

    Speed 100M Steady light: speed at 100M;

    Off: speed at 10M.

    Electrical

    Interface

    Duplex/collision FDX Steady light: full-duplex;

    Off: half-duplex;

    Flashing: half-duplex and collision.

    Link status

    indicator

    LNK Steady light: link normally;

    Off: link error.

    G.SHDSL

    Interface

    Loop-back

    indicator

    LPB Steady light: local loop-back test;

    Flashing: Premise side loop-back test;

    Off: normal.

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    6

    STU-C indicator STU-C Steady light: STU-C

    Off: STU-R

    Remote device

    indicator

    RMD Steady light: remote device be

    detected;

    Off: no remote device;

    Flashing: power on and start

    initializing.

    4.2 16-slot Chassis Front Panel

    Relationship of indicators and 16-slot chassis working status is shown as following:

    PWR Indicator: Steady On, the power supply of chassis is normal.

    PS1-5V Indicator: Steady Off, Power PS1 works normally, else it is abnormal.

    PS2-5V Indicator: Steady Off, Power PS2 works normally, else it is abnormal.

  • www.raisecom.com User Manual

    7

    Chapter 5 Dip-switch Configuration

    This section contains the following information:

    Function Configuration Dip-switch SW1, SW2 Configuration of Dip-Switch by default

    RC1102-FE(B) has function configuration dip-switch SW1 and SW2.

    5.1 Function Configuration Dip-switch SW1

    The description of SW2 is shown in below table:

    Switch

    Bit

    Meaning Configuration Description

    ON SLAVE mode 1 Device mode

    OFF AUTO mode(SLAVE mode on single-slot chassis;

    MASTER mode on network manageable chassis)

    ON STU-R mode 2 STU-C/STU-R

    OFF STU-C mode

    ON Enable 3 Remote Network

    Management

    Function OFF Disable

    4 Reserved

    ON Loop-back mode 5 Loop-back

    OFF Normal mode

    ON External loop (loop-back G.SHDSL interface data) 6 SHDSL interface

    internal/external

    loop-back OFF Internal loop (loop-back electrical interface data)

    7 Reserved

    ON Enable fault-pass, Local electrical interface closed

    if local G. interface and remote electrical interface

    not connecting.

    8 Fault-pass

    function

    OFF Disable fault-pass, local electrical interface

    working in order.

    The description of SW1 is shown in below table:

    Switc

    h Bit

    Meaning Configuration Description

    ON Manual mode 1 Electrical interface

    mode OFF Auto-negotiation mode.

    ON Manual configure speed at 10M 2 Speed 100M or

    10M OFF Manual configure speed at 10M

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    ON Half-duplex mode when manual configuration; if

    auto-negotiation failed, half-duplex

    3 Duplex

    OFF Full-duplex mode when manual configuration; if

    auto-negotiation failed, full-duplex

    ON Unsymmetrical PSD 4 SHDSL interface

    PSD OFF Symmetrical PSD

    ON-ON Reserved

    ON-OFF Annex F

    OFF-ON Annex A

    5,6

    SHDSL ANNEX

    OFF-OFF Annex B

    ON-ON TC-4PAM

    ON-OFF TC-32PAM

    OFF-ON Reserved

    7,8

    SHDSL coding

    mode

    OFF-OFF TC-16PAM

    5.2 Configuration of Dip-Switch by default

    The default configuration is all OFF.

    SHDSL speed: 36(x63Kbps), line Probe function is available.

  • www.raisecom.com User Manual

    9

    Chapter 6 Network Management

    This section contains the following information:

    Show Module Configure Module Loop-back Test Command Module Reset Command BER test Command

    6.1 Show Module

    The RC1102-FE (B) status information can be shown and configured through NView network management system.

    Click show module and below information can be shown:

    NO. Configuration Item Value Control & Configuration Characteristic

    1 Module Type RC1102-FE -MASTE

    RC1102-FE -SLAVE Cant be controlled or configured

    2 Module Ver. B.1-1.1-G75.04.05.03-A00.08-F06.20-E02.03 Cant be controlled or configured

    3 Station name - Can be configured

    4 Remote management

    ( only central office) Enable or Disable Can be configured

    5 Fault-pass from SHDSL interface

    to electrical interface Enable or disable Can be configured

    6 Loop-back command

    G. interface Internal loop enable

    G. interface Internal loop disable

    G. interface External loop enable

    G. interface External loop disable

    Can be configured

    7 Internal loop-back status Loop-back or not loop-back Cant be controlled or configured

    8 External loop-back status Loop-back or not loop-back Cant be controlled or configured

    9 Reset command G. interface reset or electrical interface reset Can be controlled

    10 Electrical interface LINK status UP, DOWN Cant be controlled or configured

    11 Electrical interface control Open/closed Can be controlled

    12 Electrical interface (FP) control Open/closed Cant be controlled or configured

    13 Electrical interface

    auto-negotiation Enable/disable Can be controlled

    14 Electrical interface speed 10M/100M Can be controlled

    15 Electrical interface transmitting

    data speed (N64Kbps) N N=1-1562

    16 Electrical interface receiving data

    speedN64KB N N=1-1562

    17 SHDSL interface working mode STU-C/STU-R Can be controlled

    18 SHDSL interface control Open/closed Can be configured

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    10

    19 SHDSL interface LINK Up/down Can be controlled

    20 SHDSL interface up threshold of

    speedN64Kbps N N=1-89

    21 SHDSL interface up threshold of

    speedN64Kbps N N=1-89

    22 SHDSL interface ANNEX A,B,F(.bis) Can be configured

    23 SHDSL interface coding mode TC-4PAMTC-16PAMTC-32PAM Can be configured

    24 SHDSL interface power spectral

    density Symmetrical/unsymmetrical Can be configured

    25 SHDSL interface LOS Normal or alarm Can be configured

    26 SHDSL interface LOSW Normal or alarm Cant be controlled or configured

    27 SHDSL interface Line Probe Enable/disable Can be configured

    28 SHDSL interface working speed

    (N64Kbps) N=1-89 Cant be controlled or configured

    29 SHDSL interface SNR (Nx0.5dB) N Cant be controlled or configured

    30 SHDSL interface SNR threshold

    (Nx0.5dB)

    N Can be configured, N=0-32

    31 SHDSL interface line attenuation

    (Nx0.5dB)

    N Cant be controlled or configured

    32 SHDSL interface attenuation

    threshold (Nx0.5dB)

    N Can be controlled, N=0-127

    33 SHDSL interface 15 minutes LOS

    threshold

    N Can be controlled, N=0-255

    34 SHDSL interface 15 minutes

    LOSW threshold

    N Can be controlled, N=0-255

    35 SHDSL interface 15 minutes LOL

    threshold N Can be controlled, N=0-255

    36 SHDSL interface 15 minutes ES

    threshold N Can be controlled, N=0-255

    37 Performance statistics current 15

    minutes Table Cant be controlled or configured

    38 Performance statistics history

    96x15 minutes Table/figure Cant be controlled or configured

    39 Performance statistics current 24

    hours Table Cant be controlled or configured

    40 Performance statistics history

    7x24 hours Table/figure Cant be controlled or configured

    41 Performance statistics parameter-

    G. interface LOS N Cant be controlled or configured

    42 Performance statistics parameter-

    G. interface LOSW N Cant be controlled or configured

    43 Performance statistics parameter-

    G. interface LOL N Cant be controlled or configured

    44 Performance statistics parameter-

    G. interface CV N Cant be controlled or configured

    45 Performance statistics parameter-

    G. interface ES N Cant be controlled or configured

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    11

    46 Performance statistics parameter-

    G. interface SES N Cant be controlled or configured

    47 Performance statistics parameter-

    G. interface UAS N Cant be controlled or configured

    48 Performance statistics parameter-

    G. interface LOSWS N Cant be controlled or configured

    49 BERT control Working normal, BERT Can be configured

    50 BERT data valid Valid/invalid Cant be controlled or configured

    51 BERT test result Succeed/fail/not test Cant be controlled or configured

    52 BERT test time(second) N Cant be controlled or configured

    53 BERT error number N Cant be controlled or configured

    54 BERT average error ratio - Cant be controlled or configured

    55 BERT test bit number 231228225221 Can be configured

    6.2 Configure Module

    In above table the items which are can be configured can be configured by config modular command. These items include: receiving speed, transmitting speed, electrical interface configuration, etc. Only remote management mode can used to set SLAVE mode, (even if plug the device into 16-slot chassis, it can only query SLAVE mode status, but can not configure this mode at central office).

    The SHDSL interface speed, ANNEX, coding mode are affected by one another. According to speed value to examine whether ANNEX and coding mode is reasonable, if the configuration is not reasonable, configuration is not successful.

    Annex Coding mode Minimum speedX64Kbps Maximum speedX64KbpsAB TC-4PAM 1 2

    AB TC-16PAM 3 36

    F TC-16PAM 37 60

    F TC-32PAM 37 89

    ANNEX, coding mode at both side must be the same when interconnect by SHDSL interface.

    6.3 Loop-back Test Command

    To local and remote device the loop-back test function can be enabled or disabled by loop-back test command, four loop-back test commands are available.

    G. interface internal loop-back(loop-back electrical interface data)

    Remote Device

    Local device GSHDSL Local device Client

    device Ethernet Ethernet

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    12

    G. interface external loop-back(loop-back G.SHDSL interface data)

    The loop-back test status is shown in Show module table, include internal loop-back, internal loop-back disable, external loop-back, external loop-back disable.

    6.4 Module Reset Command

    Local and remote module can be reset by G. interface hard reset electrical interface reset command. After resetting the configuration value are reserved.

    6.5 BER Test Command

    Error tester is available in the device by enable/disable of the BER Test command. The tested error data can be chosen from 231, 228, 225, 221, and testing error bit type can be PRBS of 2151. The testing result includes BitErrors counting, ElapsedTime (unit:second) counting, average error ratio etc.

    Local

    device

    Remote

    deviceGSHDSLLocal

    device Client device

    Ethernet Ethernet

  • www.raisecom.com User Manual

    13

    Appendix A Acronyms

    Acronyms Full meanings

    SHDSL Single-Pair High-Speed DSL

    STU-C SHDSL Transceiver Unit at the Central Office

    STU-R SHDSL Transceiver Unit at Remote End

    PSD Power Spectrum Density

    LOSW Loss Of Sync Word failure

    SNR Signal-to-Noise Ratio

    TC-PAM Trellis Coded Pulse Amplitude Modulation

    10BASE-T A term in IEEE 802.3 for Ethernet over CAT-3 or better twisted pair, based on Manchester coding and running at 10Mbps.

    100BASE-TX A term in IEEE 802.3 for Fast Ethernet over CAT-5 twisted pair, based on 4B/5B coding and running at 100Mbps.

    Auto-negotiation

    The auto negotiation procedure is: the port at one site adapts its bit rate and duplex mode to the highest level it and the opposite site device both support according to the bit rate and duplex mode adopted by the remote site device, that is, the connected devices on both site adopt the fastest transmission mode they both support after the auto negotiation process.

    Full-duplex A communication pattern that allows communication in both directions simultaneously.

    Half-duplex A communication pattern that allows communication in both directions, but only one direction at one time.

    RJ-45 The 8 position modular connector applied in twisted pair cable link

    MDI Medium Dependent Interface, the name for the connector physically and electrically connects the media converter and the media segment.

    MDIX Medium Dependent Interface Crossover, it sends the transmitting signal of a device to the receiving port of the opposite device and vice versa.

  • www.raisecom.com User Manual

    14

    Appendix B FAQ

    1. G. interface LNK indicator flashes:

    Fail to download SHDSL chip program after power on.

    2. G. interface can not LINK up:

    The twisted-pair cable is not connected correctly (see relevant section in chapter 3); G. interface mode at two sites mismatched (STU-C, STU-R must in pairs; power spectrum density modes, ANNEX modes and coding modes must be consistent); the interface maybe disabled.

    3. There is errored bit:

    The distance of twister-pair cable is too long (please examine the SNR value of G.interface, if the value is less than 6, the distance is too long), clock mode of RC1102-FE-BL mismatches with E1 device clock mode (clock source not consistent); the E1 interface timeslot number at both sites is different.

  • Address: 2nd Floor, South Building of Rainbow Plaza, No.11 Shangdi Information Road, Haidian District, Beijing Postcode: 100085 Tel: +86-10-82883305 Fax: +86-10-82883056 Email: [email protected] http://www.raisecom.com