Black Box MT760A-232/232 User manual

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 [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]
JANUARY 2004
MT760A-232/232
MT760A-232/V35
MT760A-V35/V35
MT760A-X21/X21
MT760A-530/530
MT760A-530/232
MT760A-DDS/232
MT760A-DDS/V35
FradSwitch A/S 3 Port

3
FCC/IC STATEMENTS
FEDERAL COMMUNICATIONS COMMISSION
AND
CANADIAN DEPARTMENT OF COMMUNICATIONS
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 the Canadian Department of
Communications.
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 le ministère des Communications du Canada.
EN 55022 Warning: This is a Class A product. In a domestic environment, this
product might cause radio interference, in which case the user might be required
to take adequate measures.

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FRADSWITCH A/S 3 PORT
TELECOMMUNICATION SAFETY STATEMENTS
Always observe standard safety precautions during installation, operation, and
maintenance of this product. Only a qualified and authorized service personnel
should carry out adjustment, maintenance, or repairs to this instrument. No
adjustment, maintenance, or repairs should be performed by either the operator
or the user.
The safety status of each of these ports on the Fradswitch A/S 3 Port is declared
according to EN 41003 and is detailed in the table below:
Safety Status Ports
SELV RS-232/V.24, RS-530, V.35, X.21, LAN
TNV-1 DDS
SELV = Safety Extra-Low Voltage
TNV-1 = Telecommunications Network Voltage operating within the limits of
SELV and subject to overvoltages

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DECLARATION OF CONFORMITY (CE)
DECLARATION OF CONFORMITY (CE)
The manufacturer declares that the Fradswitch A/S 3 Port conforms to the
following standards:
EMC: EN 55022 (1994) Limits and methods of measurement of radio-
disturbance characteristics of information-
technology equipment.
EN 50082-1 (1992) Electromagnetic compatibility: Generic immunity
standards for residential, commercial, and light
industry.
Safety: EN 60950 (1992/93) Safety of information-technology equipment,
including electrical business equipment.
The Fradswitch A/S 3 Port herewith complies with the requirements of the EMC
Directive 89/336/EEC and the Low Voltage Directive 73/23/EEC. The Fradswitch
was tested in a typical configuration.

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FRADSWITCH A/S 3 PORT
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.

7
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.

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FRADSWITCH A/S 3 PORT
Contents
Chapter Page
1. Specifications ........................................................................................... 10
1.1 The Main-Link Ports (All Numbered Ports Except
Port 1 on “-DDS” Models) ............................................................ 10
1.2 The DDS Port (Port 1 on “-DDS” Models Only) ............................. 11
1.3 The Control Port ............................................................................... 11
1.4 The Unit As a Whole ........................................................................ 12
2. Introduction ............................................................................................. 13
3. Configuration and Installation ............................................................... 14
3.1 The Complete Package ..................................................................... 14
3.2 Site Requirements ............................................................................. 15
3.3 Hardware Configuration .................................................................. 16
3.3.1 Accessing the PCBs ................................................................. 17
3.3.2 The Jumpers on the Main Circuit Board ............................... 17
3.3.3 The Jumper Banks on the Interface Boards .......................... 19
3.4 Installing a Switch in a 19" Rack (Optional) ................................... 20
3.5 Attaching Cables to the Switch ......................................................... 21
3.5.1 Connecting to the Control Port ............................................. 21
3.5.2 Connecting to the DDS Port .................................................. 21
3.5.3 Connecting to the Non-DDS Main-Link Ports ...................... 22
3.5.4 Connecting AC Power ............................................................. 23
4. Operation ................................................................................................. 24
4.1 The Switch’s Controls, Indicators, and Connectors ....................... 24
4.1.1 Front-Panel Components ....................................................... 24
4.1.2 Rear-Panel Components ......................................................... 26
4.2 Basic Operating Instructions and Indications ................................. 27
4.2.1 Power-Up ................................................................................. 27
4.2.2 Normal Operation .................................................................. 27
4.2.3 Power-Down ............................................................................. 27
4.3 Upgrading the Switch’s Firmware .................................................... 28

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TABLE OF CONTENTS
Chapter Page
5. Troubleshooting ...................................................................................... 31
5.1 Things to Try First ............................................................................. 31
5.2 Calling Black Box .............................................................................. 31
5.3 Shipping and Packaging ................................................................... 32
Appendix: Connector Pinouts ....................................................................... 33
A.1 The RS-232 Interfaces ....................................................................... 33
A.2 The RS-530 Interface ........................................................................ 34
A.3 The V.35 Interface ............................................................................ 35
A.4 The X.21 Interface ............................................................................ 36
A.5 The DDS Interface ............................................................................ 36

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FRADSWITCH A/S 3 PORT
1. Specifications
1.1 The Main-Link Ports (All Numbered Ports Except Port 1 on “-DDS” Models)
Interfaces — Models with “232” in their product code:
EIA/TIA RS-232 (ITU-T V.24/V.28);
Models with “530” in their product code: EIA/TIA RS-530;
Models with “V35” in their product code: ITU-T V.35;
Models with “X21” in their product code: ITU-T X.21;
All either DTE or DCE (user-selectable)
Protocols — X.25, Frame Relay, HDLC, STM (proprietary), IP/SLIP,
or async (user-selectable):
X.25: Complies with ITU-T X.25 (1988), LAP-B;
Frame Relay: Complies with ANSI T1.606, T1.617
Annex D, and T1.618, as well as ITU-T Q.922
Annex A; also supports CLLM, LMI, and ANSI PVC
management protocols;
STM: Compatible with Stat-4 (our product code
MX864A), Stat-8 (MX866A), and Stat-24 (MX868A)
statistical multiplexors;
IP: Supports encapsulation over X.25 (as per
RFC 1356) or Frame Relay (as per RFC 1490), as well
as dialup links for X.25 with X.32 protocols
Packet Size — X.25: Up to 4096 bytes;
Other protocols: Up to 8192 bytes
Clock Source — Internal or recovered (user-selectable)
Data Rate — Any port configured as synchronous: Any data rate that,
when added to the data rates of all other synchronous
main-link ports, does not total more than 2 Mbps;
Any port configured as asynchonous: 115,200, 57,600,
38,400, 19,200, 9600, 4800, 1200, 600, 300, 150, 110, or
75 bps (user-selectable)
Maximum
Distance — Standard maximum for each interface
Connectors — On rear panel:
(2) DB25 female (“-DDS” models) or
(3) DB25 female (all other models);

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CHAPTER 1: Specifications
Connectors
(continued) — On adapter cables:
For each V.35 port: (1) M/34 female;
For each X.21 port: (1) DB15 female
1.2 DDS Port (Port 1 on “-DDS” Models Only)
Interface — Digital Data Service (DDS) as per AT&T®Pub. 62310
Clock Source — Either internal (transmit) or recovered from line signal
(receive), user-selectable
Data Rate — 4.8, 9.6, 19.2, or 56 kbps, user-selectable
Maximum
Distance — Over 24-AWG (0.6-mm) wire:
6.5 mi. (10.5 km) at 9.6 kbps,
5 mi. (8 km) at 19.2 kbps, or
4 mi. (6.5 km) at 56 kbps;
Attenuation — Up to 43 dB
Transmit
BPV Sequence — Zero suppression
Received
BPV Sequence — Out of service (OOS), out of frame (OOF), DSU
loopback
Connector — (1) Rear-mounted RJ-48 female
1.3 The Control Port
Flow Control — Hardware (RTS/CTS) or software (X-ON/X-OFF), user-
selectable
Data Rate — 38,400, 19,200, 9600, 4800, 1200, 600, 300, 150, 110, or
75 bps (user-selectable)
Maximum
Distance — 50 ft. (15.2 m)
Command
Modes — X.28, extended