Black Box ME0006A-10BT Manual
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Black Box ME0006A-10BT Manual

Black Box ME0006A-10BT Manual

2-wire short-range dsl line driver (hdsl with 10base-t)
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NOVEMBER 2001
ME0006A-10BT
2-Wire Short-Range DSL Line Driver
(HDSL with 10BASE-T)
CUSTOMER
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
SUPPORT
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
INFORMATION
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com

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  • Page 1 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) SUPPORT FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 FCC AND IC RFI STATEMENTS/CE NOTICE FEDERAL COMMUNICATIONS COMMISSION INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication.
  • Page 3 2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
  • Page 4 NOM STATEMENT 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.
  • Page 5 2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T TRADEMARKS USED IN THIS MANUAL Cisco is a registered trademark of Cisco Systems. ® IPX™ is a trademark of Novell Incorporated. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

  • Page 6: Table Of Contents

    CONTENTS Contents Chapter Page 1. Specifications ........... . 6 2.

  • Page 7: Specifications

    2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T 1. Specifications Clocking Modes: Internal or Receive Recovered DTE Rates: 64, 128, 192, 256, 320, 384, 448, 512, 576, 640, 704, 768, 832, 896, 960, 1024, 1088, 1152 kbps Line Rates (DSL Line): 144, 272, 400, 528, 784, 1040, 1168 kbps Transmission Line: Single twisted pair Line Coding: 2B1Q Line Interface: Transformer coupled, 1500-VAC isolation...

  • Page 8: Introduction

    CHAPTER 2: Introduction 2. Introduction 2.1 Description The 2-Wire Short-Range DSL Line Driver (HDSL) 10BASE-T is a multi-rate DSL modem that provides seamless MAC Layer connectivity between two peered 10BASE-T LANs. Enterprise users no longer need to hassle with a bridge and a CSU/DSU or recurring leased-line costs.

  • Page 9: Ppp Operational Background

    2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T 3. PPP Operational Background PPP is a protocol used for multiplexed transport over a point-to-point link. PPP operates on all full-duplex media. It’s a symmetric peer-to-peer protocol, which can be broken into three main components: 1.
  • Page 10 CHAPTER 3: PPP Operational Background Figure 3-1 shows a typical Cisco router with a serial interface configured as a PPP ® half-bridge. The router serial interface uses a remote device that supports PPP bridging to function as a node on the remote Ethernet network. The serial interface on the Cisco router will have an IP address on the same Ethernet subnet as the bridge.
  • Page 11 2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T Some networking systems do not define network numbers in packets sent out over a network. If a packet does not have a specific destination network number, a router will assume that the packet is set up for the local segment and will not forward it to any other sub-network.

  • Page 12: Configuration

    CHAPTER 4: Configuration 4. Configuration The HDSL Line Driver has two sets of eight DIP switches. This chapter describes switch locations and explains all settings. Configuring the Hardware DIP Switches The 16 external switches are grouped into two eight-switch sets. They’re externally accessible from the underside of the HDSL Line Driver, as shown in Figure 4-1.
  • Page 13 2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T DIP-S WITCH The only setting for S2 is for clocking mode between HDSL Line Drivers. All other switches are reserved for factory use and must remain in the default configuration. Default settings are shown in the Table 4-1. Table 4-1.
  • Page 14 CHAPTER 4: Configuration Table 4-2. Clock mode. CO/CP Unit S2-6 S2-7 Clock Mode Description Internal HDSL Line Driver generates internal, crystal controlled timing. Receive Recover HDSL Line Driver receives its timing from the CO unit over the DSL span. DIP-S WITCH Use the DIP switches in Switch S3 to set the DTE Rate (for LAN bandwidth allocation) and to reset the unit to its software default settings.
  • Page 15 2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T Switch S3-1 through S3-6: DTE Rate Use Switch S3-1 through S3-6 to provision bandwidth to the LAN in 64-kbps increments up to 1.152 Mbps. Peak bandwidth utilization on the local domain on an Ethernet LAN runs typically between 15% to 20% (1.5 Mbps to 2 Mbps) of the maximum bit rate of 10 Mbps.
  • Page 16 CHAPTER 4: Configuration NOTE The actual line rate of the Line Driver is determined by the selection of the DTE rate. To see the line rate associated with various DTE rates, refer to the distance chart in the Appendix. Switch S3-7: Reset Software Defaults Use Switch S3-7 to reset the software-configured factory defaults.

  • Page 17: Installation

    2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T 5. Installation When the HDSL Line Driver has been properly configured, it may be connected to the DSL twisted-pair interface, the 10BASE-T Ethernet interface, and the power source. Figure 5-1 shows the locations of these interface ports. 10BASE-T interface Figure 5-1.

  • Page 18: Connecting The 10Base-T Ethernet Port To A Pc (Dte)

    CHAPTER 5: Installation Figure 5-2. Twisted-pair line interface. NOTE The HDSL Line Driver has been optimized for performance at high bit rates (DTE rates greater than 512 kbps). To ensure accurate performance at these bit rates, please use twisted-pair line interface cable that is at least 330 ft.

  • Page 19: Connecting The 10Base-T Ethernet Port To A Hub (Dce)

    2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T 5.3 Connecting the 10BASE-T Ethernet Port to Hub (DCE) The 10BASE-T interface is configured as DTE (Data Terminal Equipment) just like a 10BASE-T network interface card in a PC. Therefore, it “expects” to connect to a 10BASE-T hub using a straight-through RJ-45 cable.
  • Page 20 CHAPTER 5: Installation WARNING There are no user-serviceable parts in the power supply. Contact Black Box Technical Support at 724-746-5500 for more information.

  • Page 21: Operation

    2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T 6. Operation When the HDSL Line Driver has been properly configured and installed, it should operate transparently. This chapter describes power-up, LED status indicators, and the built-in loopback test modes. 6.1 Power-Up Before applying power to the HDSL Line Driver, please read Section 5.4 and make sure that the unit will be connected to the appropriate power source.
  • Page 22 CHAPTER 6: Operation 3 pulses = Clear to Send (CTS) or Carrier Detect (DCD) from base unit are not asserted 4 pulses = Line Driver buffer is saturated 5 pulses = WAN receive frame(s) too large 6 pulses = WAN receive frame(s) not octet aligned 7 pulses = WAN receive frame(s) aborted 8 pulses =...

  • Page 23: Test Modes

    2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T Table 6-1. LED descriptions. LOCAL REMOTE 10BT Status NS 10BT DSL Status NS Power On DSL Link Link Brk Brk + 10s RDL + 511 With DTE Connected With DTE Connected Mark Space Data Link Brk = DSL Link Broken...
  • Page 24 CHAPTER 6: Operation Loop Span Pattern Framer Pattern Loop Framer Control Gen./Det. Gen./Det. Control Processor Processor Figure 6-2. Block diagram of the major elements used in the tests. Framer The framer determines the status of the line. In normal operation, the framer transmits and expects to receive framed packets from the far end.

  • Page 25: Restart Procedure And Timeouts

    2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T 6.3.2 R ESTART ROCEDURE AND IMEOUTS The restart procedure is in place to allow the units to re-establish a connection after the framer begins seeing unframed packets. Table 6-2 shows the amount of time the framer must see consecutive unframed packets before the unit will restart and try to establish a new line connection.

  • Page 26: Loops And Patterns

    CHAPTER 6: Operation 6.3.3 L OOPS AND ATTERNS The following section describes the remote loopback/BER test modes. Remote Digital When remote loop/511 or remote loop/511E is enabled via the front-panel switch, the remote unit’s restart timer is set to one minute. It does this because when the 511/511E generator is initiated on the local unit, the remote framer begins seeing unframed packets.
  • Page 27 2-WIRE SHORT-RANGE DSL LINE DRIVER (HDSL) WITH 10BASE-T 2. If the test indicates no errors are present, move the test switch V.52 toggle switch up, activating the 511E test with intentional errors present. If the test is working properly, the local unit’s red ER LED will blink. A successful 511E test will confirm that the link is in place, and that the Line Driver’s built-in 511 generator and detector are working properly.

  • Page 28: Appendix: Transmission Distance Charts

    APPENDIX: Transmission Distance Charts Appendix. Transmission Distance Charts Table A-1. Transmission distance HDSL Line Driver, no crosstalk. Line Rate DTE Rates 26 AWG (0.4 mm) 24 AWG (0.5 mm) (kbps) (kbps) 64, 128 20,700 3.9 24,500 4.6 192, 256 17,400 3.3 24,200 4.6 320, 384 15,100 2.9...
  • Page 29 © Copyright 2001. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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