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Sigrand SG-16G2 User Manual

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SIGRAND
SHDSL modem
Sigrand SG-16G2
User's Guide
v. 2.4
Novosibirsk
2006
1

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Summary of Contents for Sigrand SG-16G2

  • Page 1 SIGRAND SHDSL modem Sigrand SG-16G2 User's Guide v. 2.4 Novosibirsk 2006...
  • Page 2 © 2005, 2006 Sigrand LLC All trademarks and registered trademarks mentioned hereinafter are the property of their respective owners.

  • Page 3: Table Of Contents

    Contents Contents page How to use this Guide 1. Modem description 1.1 DSL interface specifications 1.1.1 Maximum reach performance 1.2 E1 interface specifications 1.3 RS-232C interface specifications 1.4 Power supply unit 1.5 Miscellaneous data 1.6 Shipment contents 1.7 Environmental specifications 1.8 Appearance, controls, indicators and connectors 1.8.1 Front panel and indicators 1.8.2 Rear panel and connectors...
  • Page 4 The dsl command 3.3.1 “Master”/”slave” mode selection The dsl master and dsl slave commands 3.3.2 Setting DSL rate The dsl rate command 3.3.3 Line coding selection The dsl code command 3.3.4 Link statistics The dsl stat command The dsl stat reset command 3.3.5 How to force a retrain The dsl retrain command 3.4 Е1 interfaces management...

  • Page 5: How To Use This Guide

    How to use this Guide To ease using this Guide the following notational conventions are provided here (icons as well as relevant fonts): Icons Icon Meaning Explanation The text marked by this icon  contains information making easy Pay attention! setup and maintenance of equipment The text marked by this icon...
  • Page 6 Before starting installation of the modem we recommend you  to look for a updated version of this User's Guide as well as  the firmware and the drivers available at our site www.sigrand.com...

  • Page 7: Modem Description

    64 – 704  Manual line coding selection is available only in the console management mode – see chapter 3 of this Guide. Compatibility: The Sigrand SG-16G2 modem line coding is compatible with all Sigrand SG-16 series and Granch SBNI16 series modems.

  • Page 8: Dsl Interface Specifications

    16G2 modem is shown on Table 2. The Bit Error Rate (BER) at the maximum reach is equal to or less than 10 . The specified reach is proved by testing at the Sigrand lab reference line. Full version of the rate table is...

  • Page 9: E1 Interface Specifications

    An actual reach may vary against the shown data due to variations of cable performance. Table 2 TPP50-0.4 TPP50-0.5 Data rate Rating cable cable Line coding (kbps) (26 AWG) (24 AWG) Length (km/kft) 2.2/7200 3.0/9800...

  • Page 10: Rs-232C Interface Specifications

    Polarity of the central contact of the connector positive 1.5 Miscellaneous data Overall modem dimensions: height, mm/in. 45/1.77 • 225/8.86 width, mm/in. 165/6.5 • depth, mm/in. Weight, g/lb 450/1 Weight with PSU, g/lb 1100/2.43 Power consumption, W 1.6 Shipment contents Sigrand SG-16G2 modem 1 pc.

  • Page 11: Environmental Specifications

    1.8 Appearance, controls, indicators and connectors The Sigrand SG-16G2 modem can be connected to any equipment having E1 interface such as telco equipment, routers and access servers. The modem is manageable by switches placed on the rear panel as well as by console management port (ch.

  • Page 12: Rear Panel And Connectors

    No signal from Е1 equipment Frame synchronization detected or SYNC Unframed mode Frame synchronization not detected Test mode TEST Operation mode 1.8.2 Rear panel and connectors Layout of connectors and switches on the rear panel of the Sigrand SG- 16G2 modem Figure 2...
  • Page 13 Purpose of connectors and switches of the Sigrand SG-16G2 modem Table 4 Power supply unit plug 9-12V DC RS-232C console port for modem management RS232 DSL line connector Terminal to connect to protective ground PGND Dial to select fixed rate for DSL channel...
  • Page 14 The “SET1” DIP switch selects “Master/Slave” mode, the “SET2” switch is not used and the “SET4” switch sets a mode of modem management. Purpose of the switches are shown on Table 5. Table 5 Switch Purpose Position Meaning Master modem Operation (STU-C) SET1...

  • Page 15: Modem Setup Directions

    After you verify that the line comply with the aforementioned requirements - • Fix the supplied RJ-45 plug on the cable in accordance with figure 5. The Sigrand SG-16G2 modem uses only one pair of pins, namely 4 and 5. Other pins are not assigned. •...

  • Page 16: Choosing Modem Management Method

    Fig.5 2.2 Choosing modem management method There are two ways to manage the modem: • by the DIP-switches placed on the rear panel of the modem (see fig.4); • by a terminal program via the RS-232C console port. Both modes have certain advantages over each other so a user is free to choose either setup mode according to actual requirements for modem operation.

  • Page 17: Rate Selection Guidelines

    2.4.1 Rate selection guidelines Before setting the data rate you should have known the performance of the line the modems are intended for. If the line performance is unavailable, apply the following technique to select the proper data rate: • Measure resistance of the line.

  • Page 18: Configuring Е1 Interface

    E1 devices are connected to the E1-A and Е1-B ports (RJ-45 sockets, fig. 5) placed on the rear panel of the modem (fig. 2). 2.5.2 Configuring E1 interfaces In the DIP switches setup mode (SET4 is OFF) the E1 ports always have the following fixed settings: •...
  • Page 19 The modem can transmit via DSL two entire (unchannelized) or fractional (channelized) E1 trunks with total payload up to 4096 kbps. The E1-A and Е1-B ports of the SG-16G2 modem differ in the clock synchronization. The E1-A port serves as the clock source for the for both E1-A and E1-B streams transferred through a DSL loop.

  • Page 20: Modem Management Via Console Port

    Baud rate (Bits per second) should be set to 9600 or 57600 in accordance with SET3 switch setting. Power on or reboot the modem. If the terminal has been set up properly, the following message appears on the screen: Sigrand SG-16B SHDSL modem V.2.4 Interface module M16-2G Initialization complete 3.2 General purpose commands The modem is managed by a set of commands conventionally divided into two types: the “general purpose”...

  • Page 21: The Help Command

    V.35, FXO/FXS. Therefore the help command displays commands for each interface available in this firmware. The info command displays information about the firmware version, the modem uptime and current status of the modem interfaces. : info Sigrand SG-16B SHDSL modem V.2.4 Setup mode: Terminal...

  • Page 22: The Stat Command

    SHDSL firmware: v.5.0 Interface module M16-2G Uptime: 0 days 00:22:30 E1A: Long-Haul FRAMED CAS Code HDB3 – ONLINE E1B: Long-Haul FRAMED CAS Code HDB3 – ONLINE DSL: Rate=4096 kbit/s Code=TCPAM32 SLAVE – ONLINE The stat command displays current status and statistics of the modem interfaces: : stat E1A: Long-Haul FRAMED CAS Code=HDB3 –...

  • Page 23: The Reboot Command

    The reboot command performs reset of the modem. : reboot Rebooting... Sigrand SG-16B SHDSL modem V.2.4 Interface module M16-2G Initialization complete The update command is used to update the modem firmware. Detailed procedure of firmware reprogramming is discussed in chapter 4 of this Guide.

  • Page 24: The Dsl Command

    DSL RATE [rrrr|AUTO] | CODE cccc | MASTER | SLAVE - set mode for DSLx DSL STAT [RESET] - show statistics for DSL (or clear it) DSL RETRAIN - force DSL to retrain The DSL command allows to view statistics, to enter or to change settings of the DSL interface.

  • Page 25: Line Coding Selection

    3.3.3 Line coding selection As mentioned above, different TСРАМ line coding modes are used to transmit data with different rates. Chart 1 704 Kbps TCPAM4 64 Kbps 1216 Kbps 192 Kbps TCPAM8 192 Kbps TCPAM16 3840 Kbps 6016 Kbps 256 Kbps TCPAM32 1000 2000...

  • Page 26: Link Statistics

    If the data rate is not within the permitted range for an entered line coding mode, the following message appears: invalid line code for this rate. 3.3.4 Link statistics Use the dsl command with the stat option to view link statistics: : dsl stat DSL: Rate=512 kbit/s Code=TCPAM8 SLAVE - ONLINE TX=1341 RX=1231 ERR=1 LOSW=12 CRC6=11 RETRAIN=2 of 5...

  • Page 27: How To Force A Retrain

    : dsl retrain DSL: Rate=512 kbit/s Code=TCPAM8 SLAVE – OFFLINE 3.4 E1 interfaces management The Sigrand SG-16G2 modem features two E1 (G.703/G.704, 2048 kbps) ports. The following commands allow to manage the ports: :help e1 E1 - show current E1 settings...

  • Page 28: The E1* Command

    The e1a (e1b) command allows to view the statistics and to configure the E1 interface. Execution of the command without options and arguments shows current settings of the interface: : e1a E1A: Long-Haul FRAMED CAS Code HDB3 - ONLINE : e1b E1B: Long-Haul FRAMED CAS Code AMI - OFFLINE 3.4.1 Long/Short Haul modes The short option of the E1A (E1B) command turns off the Е1 interface...

  • Page 29: The E1* Framed And E1* /Framed

    The error message follows up any attempt to enable superframing in unframed mode: : e1a crc4 Invalid option for unframed mode : e1b cas Invalid option for unframed mode Disabling superframes and frame synchronization is performed by the е1a (e1b) command with the /framed option and the /crc4 and /cas keys. : e1a E1A: Long-Haul FRAMED CRC4 CAS Code=HDB3 –...

  • Page 30: The E1* Code Command

    3.4.3 Е1 line coding The line coding type is set by the Е1 command with the code option and keys ami or hdb3. : e1a code ami E1A: Long-Haul FRAMED CRC4 CAS Code=AMI – ONLINE : e1a code hdb3 E1A: Long-Haul FRAMED CRC4 CAS Code=HDB3 – ONLINE ...

  • Page 31: Timeslot Map

     Execution of the e1 stat command does automatic reset of any current statistics of the interface! 3.4.5 Timeslot map The G.704 E1 frame structure consists of 32 8-bit channels (so-named “timeslots”) which have been assigned numbers from 0 to 31. The timeslot 0 is used to transmit the frame alignment signal (FAS) and the additional (service) bits (Sa, Si).
  • Page 32 To add timeslots use the е1a (e1b) command with the map option and a key alike add N with N standing for number of an added timeslot. : e1a map add 24 E1A: Long-Haul FRAMED Code=HDB3 – ONLINE 01234567890123456789012345678901 -****************-------*------- Used timeslots: 17 Payload: 1088 kbit/s To add several timeslots specify those by a list: e1a (e1b) map add 3 4 6, or by a range: e1a map add 8-11.
  • Page 33 If total capacity of timeslots exceeds the DSL interface rate, the following warning appears while map examination: “Too many timeslots for this DSL rate”. To delete timeslots from the list transmission list use the map del N option with N stands for a number of deleted timeslot. To delete several timeslots specify those by a list: map del 1 2 3 or by a range: map del 7-14.

  • Page 34: Timeslot

    The error message appears on any attempt to change the timeslot map in unframed mode: : e1a E1A: Long-Haul UNFRAMED Code HDB3 – ONLINE : e1a map add 1-5 Invalid option for unframed mode 3.4.5.1 Timeslot 0 The timeslot 0 usually is not included in a list of transmitted timeslots since it is used for framing synchronization and carries no payload data, but its transmission demands another 64 kbps of the DSL rate.
  • Page 35 The timeslot 16 must be included in a list of transmitted timeslots regardless of other timeslots if equipment connected by the modems requires a channel for signaling, e.g. telco devices. : e1a map add 0 E1A: Long-Haul FRAMED Code=HDB3 – ONLINE 01234567890123456789012345678901 ---*****--------*--------------- Used timeslots: 6 Payload: 384 kbit/s...

  • Page 36: Updating Built-In Modem Firmware

    4. Updating built-in modem firmware Use the update command to update the built-in firmware of the Sigrand SG-16G2 modem in the following order: : update Load new image? (y/n) Y Upon entering procedure acknowledgement Y the memory buffer is clearing and the prompt to download the image file appears here: Clearing buffer memory...
  • Page 37 Clearing buffer memory... OK Loading image... OK Checking image... OK, Type=SG16HOST V.2.5 Program new image? (y/n) Y Enter acknowledgement Y to complete the write procedure: Checking BootLoader... OK Self-Programming... OK Rebooting... press N or Esc as a response to any prompt to cancel the update procedure: : update Load new image? (y/n) N...
  • Page 38 Manufacturer has been advised of the possibility of such damages. Warranty limitations: Warranty is void for modems operating on wires having aerial sections. MANUFACTURER ADDRESS Sigrand LLC, pr. Lavrentieva 6, Novosibirsk, Russia Phones +7 (383)-330-02-43, 332-94-37 Fax +7 (383)-332-02-43 www.sigrand.com...
  • Page 39 WARRANTY COUPON For Sigrand SG-16G2 modem Serial number _________________________________________ MFG date ____/____/200__ month year Quality checker_______________/_____________/ Stamp Seller Address Phone Sale date Stamp Signature Purchaser Address Phone Purchase date Stamp Signature...
  • Page 40 Appendix I Appendix I. General specifications of TPP cable Table I.1 Frequency response for twisted-pair cabling with copper conductor and PE-insulation (for reference only) Primary ratings G,S/km*1 |Z|, Ω R~, Ω/km L, H/km*10 Secondary Кгц α, dB/km ratings Conductor diameter 0.4 mm (26 AWG) 5.51 1.13 225.2...
  • Page 41 Table I.2 Cable loop resistance to conductor diameter ratio: Conductor diameter Loop resistance (mm) (Ω/km) 0.32 0.64...

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