CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
NOVEMBER 2001
ME0006A-10BT
2-Wire Short-Range DSL Line Driver
(HDSL with 10BASE-T)
1
FCC AND IC RFI STATEMENTS/CE NOTICE
FEDERAL COMMUNICATIONS COMMISSION
AND
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. It has been tested
and found to comply with the limits for a Class A computing device in accordance
with the specifications in Subpart B of Part 15 of FCC rules, which are designed to
provide reasonable protection against such interference when the equipment is
operated in a commercial environment. Operation of this equipment in a
residential area is likely to cause interference, in which case the user at his own
expense will be required to take whatever measures may be necessary to correct the
interference.
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise emission from
digital apparatus set out in the Radio Interference Regulation of Industry Canada.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par Industrie Canada.
EUROPEAN UNION DECLARATION OF CONFORMITY
This equipment complies with the requirements of the European EMC Directive
89/336/EEC.
2
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.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de
operación deben ser respetadas.
4. Todas las instrucciones de operación y uso deben ser seguidas.
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca
de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc..
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que
sean recomendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea
recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá
a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser
referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera que su posición no
interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,
alfombra o superficie similar puede bloquea la ventilación, no se debe colocar
en libreros o gabinetes que impidan el flujo de aire por los orificios de
ventilación.
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor
como radiadores, registros de calor, estufas u otros aparatos (incluyendo
amplificadores) que producen calor.
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del
tipo descrito en el instructivo de operación, o como se indique en el aparato.
3
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.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las
recomendaciones del fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas
de energia.
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea
usado por un largo periodo de tiempo.
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean
derramados sobre la cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio en su
desempeño; o
E: El aparato ha sido tirado o su cubierta ha sido dañada.
4
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.
5
CONTENTS
Contents
Chapter Page
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3. PPP Operational Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1 Connecting the DSL Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 Connecting the 10BASE-T Ethernet Port to a PC (DTE) . . . . . . . . . . . . 17
5.3 Connecting the 10BASE-T Ethernet Port to a Hub (DCE) . . . . . . . . . . . 18
5.4 Power Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6. Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.1 Power-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.2 LED Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.3 Test Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.3.2 Restart Procedure and Timeouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.3.3 Loops and Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3.4 Using the V.52 (BER) Test-Pattern Generator . . . . . . . . . . . . . . . . . . 25
Appendix: Transmission Distance Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6
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
Diagnostics: V.52-compliant (511/511E) pattern generator and detector with error
injection mode and remote loopback control by a single front-panel switch
Indicators: LEDs: DSL Link (green active); 10BT Link (green active) valid
Ethernet connection; Status (flashing yellow) indication from the Ethernet port;
NS (red active) no signal on DSP link; ER (flashing red) CRC error during patterngeneration test; TM (active yellow) test mode enabled
Configuration: Externally accessible DIP switches or SNMP managed through DSL
Rack Card (ME0003C)
Connectors: RJ-45, 10BASE-T 802.3 Ethernet
Address Aging: Entries are deleted after 8 minutes of inactivity
Frame Latency: 1 frame
Frame Buffer: 512 frames
Ethernet Physical Connection: Pin 1 TX Data +; Pin 2 TX Data -; Pin 3 RX Data +;
Pin 4 RX Data -; Pins 4, 5, 7, 8 no connection
Power: +5 external desktop power supply, 100 to 240 VAC, 50 to 60 Hz (universal
input), 10 W
Size: 1.6"H x 4.7"W x 5"D (4.1 x 11.9 x 12.7 cm)
Weight: 0.58 lb. (0.26 kg)
7
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. The HDSL Line Driver lets you a) add
additional nodes to a LAN that has reached its maximum distance limits, or
b) separate high-traffic areas of a LAN. The Line Driver connects peered LANs and
automatically forwards and receives LAN broadcasts, multicasts, and frames across
a 2-Wire DSL span. The Line Driver is 802.3 compliant and supports PPP (RFC
1661) and BCP (RFC 1638).
The HDSL Line Driver features include loopback diagnostics, inband
SNMP/HTTP remote management capabilities using Plug-and-Play, and externally
accessible configuration switches. As a symmetric DSL modem, the Line Driver
offers the same data rates in both directions over a single pair of regular telephone
lines using 2B1Q modulation. The Line Driver connects to the DSL line via an
RJ-45 jack. Power is supplied via a universal (100 to 240-VAC) power supply.
2.2 Features
• Provides MAC level (Layer 2) connection between two peered 10BASE-T
Ethernet LANs.
• Operates transparently to higher-level protocols such as TCP/IP, DECnet,
NETBEUI, and IPX™.
• PPP (Point-to-Point Protocol, RFC 1661) with Bridge Control Protocol (RFC
1638).
• Automatically discovers, loads, and deletes MAC addresses.
• Point-to-point connectivity over 2-wire HDSL up to 5 km.
• HTTP/SNMP Manageable as CP (Customer Premises) unit with a High-Speed
2-Wire Short-Range DSL Rack Card (ME0003C) CO (Central Office).
• Internal or receive recovered clocking between units.
• LED indicators for 10BASE-T Link, DSL Link, Status, No Signal, Error, and
Test Mode.
8
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. A standard method to encapsulate datagrams over serial links.
2. A Link Control Protocol (LCP) to establish, configure, and test the data-link
connection.
3. A family of Network Control Protocols (NCPs) to establish and configure
different network layer protocols.
In order to establish communications over a point-to-point link, each end of the
PPP link must first announce its capabilities and agree on the parameters of the
link’s operation. This exchange is facilitated through LCP Configure-Request
packets.
Once the link has been established and optional facilities have been negotiated,
PPP will attempt to establish a network protocol. PPP will use Network Control
Protocol (NCP) to choose and configure one or more network layer protocols.
Once each of the network layer protocols have been configured, datagrams from
the established network layer protocol can be sent over the link. The link will
remain configured for these communications until explicit LCP or NCP packets
close the link down, or until some external event occurs.
The PPP Bridging Control Protocol (BCP), defined in RFC 1638, configures and
enables/disables the bridge protocol on both ends of the point-to-point link. BCP
uses the same packet exchange mechanism as the Link Control Protocol (LCP).
BCP is a Network Control Protocol of PPP; bridge packets may not be exchanged
until PPP has reached the network layer protocol phase.
Applications
In situations where a routed network requires connectivity to a remote Ethernet
network, the interface on a router can be configured as a PPP IP half-bridge. The
serial line to the remote bridge functions as a virtual Ethernet interface, effectively
extending the router’s serial port connection to the remote network. The bridge
device sends bridge packets (BPDUs) to the router’s serial interface. The router
will receive the layer three address information and will forward these packets
based on its IP address.
Loading...