Black Box MD1620A User manual

JUNE 2001
MD1620A
MD1620A-JAP
Mini-Modem
(56 kbps Data/Fax Modem)
CUSTOMER SUPPORT INFORMATION
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]

1
MINI-MODEM (56 KBPS DATA/FAX MODEM)
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 J 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 classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par Industrie Canada.

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
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.

3
MINI-MODEM (56 KBPS DATA/FAX MODEM)
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.
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
MINI-MODEM (56 KBPS DATA/FAX MODEM)
TRADEMARKS
The trademarks mentioned in this manual are the sole
property of their owners.
NAMING CONVENTIONS USED IN THIS MANUAL
In the software you received, the Mini-Modem is called
the Multi-Modem or the MT5600ADX. This is the
correct software for your Mini-Modem.

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
CONTENTS
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2. Introduction and Description . . . . . . . . . . . . . 14
2.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2 Product Description . . . . . . . . . . . . . . . . . . 14
2.2.1 What Is in Your Modem Package? . . . 18
2.2.2 How to Use This Manual . . . . . . . . . . 19
3. Installation and Connection. . . . . . . . . . . . . . . 21
3.1 Before You Install . . . . . . . . . . . . . . . . . . . . 21
3.1.1 Safety Warnings. . . . . . . . . . . . . . . . . . 21
3.1.2 Computer . . . . . . . . . . . . . . . . . . . . . . 22
3.1.3 Serial Cable . . . . . . . . . . . . . . . . . . . . . 22
3.1.4 Telephone Line . . . . . . . . . . . . . . . . . 23
3.1.5 Communications Software . . . . . . . . . 24
3.1.6 Assemble the Modem . . . . . . . . . . . . . 24
3.2 Installing the Modem . . . . . . . . . . . . . . . . . 25
3.3 LED Indicators. . . . . . . . . . . . . . . . . . . . . . . 30
3.4 Is Your Mini-Modem Ready for Use? . . . . . 33
3.5 Operating Your Mini-Modem . . . . . . . . . . . 34
3.6 Software Configuration . . . . . . . . . . . . . . . . 36
3.7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . 40

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
3.7.1 None of the LEDs Light When the
Modem Is On . . . . . . . . . . . . . . . . . . . 41
3.7.2 The Modem Does Not Respond to
Commands . . . . . . . . . . . . . . . . . . . . . 42
3.7.3 The Modem Dials But Cannot
Make a Connection. . . . . . . . . . . . . . . 47
3.7.4 The Modem Disconnects
While Online. . . . . . . . . . . . . . . . . . . . 52
3.7.5 The Modem Cannot Connect
When Answering. . . . . . . . . . . . . . . . . 54
3.7.6 Slow File Transfer . . . . . . . . . . . . . . . . 54
3.7.7 Losing Data . . . . . . . . . . . . . . . . . . . . . 55
3.7.8 Garbage Characters on the Monitor . 56
4. AT Commands, S-Registers, and Result Codes 58
4.1 AT Commands . . . . . . . . . . . . . . . . . . . . . . . 58
4.2 S-Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . 98
4.3 Result Codes. . . . . . . . . . . . . . . . . . . . . . . . . 124
5. Testing Your Modem. . . . . . . . . . . . . . . . . . . . . 128
5.1 Local Analog Loopback Test/V.54 Loop 3 128
5.2 Digital Loopback Test/V.54 Loop 2
(Local/Manual). . . . . . . . . . . . . . . . . . . . . . 130
5.3 Digital Loopback Test/V.54 Loop 2
(Remote/Automatic) . . . . . . . . . . . . . . . . . 132

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
6. Service and Technical Support . . . . . . . . . . . . 135
6.1 Calling Black Box. . . . . . . . . . . . . . . . . . . . . 135
6.2 About the Internet. . . . . . . . . . . . . . . . . . . . 135
Appendix A: Tone-Dial Frequencies . . . . . . . . . . 136
Appendix B: Regulatory Information . . . . . . . . . 138
B.1 Single-User Software License Agreement . 138
B.2 FCC Regulations for Telephone Line
Interconnection . . . . . . . . . . . . . . . . . . . . . . 138
B.3 Canadian Limitations Notice . . . . . . . . . . . 139

8
MINI-MODEM (56 KBPS DATA/FAX MODEM)
1. Specifications
Server-to-Client Data Rates — K56flex speeds when
accessing an ISP-type K56flex server (actual speed
depend on server capabilities and line conditions)
Client-to-Client Data Rates — 33,600, 31,200, 28,800,
26,400, 24,000, 21,600, 19,200, 16,800, 14,400,
12,000, 9600, 7200, 4800, 2400, 1200, 0-300 bps
Data Rates (fax) — 14,400, 9600, 7200, 4800, 2400,
300 bps
Data Format — Serial, binary, asynchronous
Compatibility — K56flex, ITU V.42bis, V.42,
Enhanced V.34, AT&T V32terbo, ITU V.32bis,
V.32, V.22bis, V.22, Bell 212A and 103/113, ITU
V.17, Group 3 T.4, T.30 and EIA Class 1
NOTE
Though this modem is capable of 56-kbps download
government regulations, line impairments, public
telephone infrastructure, and other external technological
factors currently prevent maximum 56-kbps connections.
Fax Compatibility — CCITT V.17, Group 3, V.29,
V.27ter and EIA Class 1

9
MINI-MODEM (56 KBPS DATA/FAX MODEM)
Error Correction/Data Compression — V.42
(LAP-M or MNP 3 and 4), V.42bis (4:1
throughput), MNP 5 (2:1 throughput)
Speed Conversion — Serial-port data rates
adjustable to 300, 1200, 2400, 4800, 9600, 19,200,
38,400, 57,600, and 115,200 bps
Flow Control — Software XON/XOFF, Hardware
RTS/CTS
Mode of Operation — Fax on-line modes, and full
duplex over dial-up lines
Intelligent Features — Automatic or manual dialing,
automatic or manual answer, microprocessor-
controlled, EIA extended Automode, adaptive
line probing, automatic symbol rate and carrier
frequency during start-up, retrain and rate
renegotiation, autodial, redial, tone dial, dial
pauses, call status display, auto-parity and data-rate
selection, keyboard-controlled modem options,
nonvolatile memory and on-screen displays for
modem option parameters and four telephone
numbers/command lines of up to 40 characters
each
Command Buffer — 40 characters

10
MINI-MODEM (56 KBPS DATA/FAX MODEM)
Data Modulation — Trellis-Coded Modulation
(TCM) at K56flex, 33,600, 31,200, 28,800, 26,400,
24,000, 21,600, 19,200, 16,800, 14,400, 12,000,
and 9600 bps; Quadrature Amplitude Modulation
(QAM) at 9600 (non-trellis), 4800, and 2400 bps;
PSK at 1200 bps; FSK at 300 bps
Fax Modulation — V.17 TCM at 14400, 12000, 9600,
and 7200 bps; V.29 QAM at 9600 and 7200 bps;
V.27ter DPSK at 4800 and 2400 bps; V.21CH2 FSK
at 300 bps (Half Duplex)
Carrier Frequencies (Data) — 1800 Hz
V.32/V.32bis/V32terbo; Enhanced V.34/K56flex
Carrier Frequencies, 2400 & 1200 bps
(V.22bis/V.22 or Bell 212A Standard) — Transmit
Originate: 1200 Hz; Transmit Answer: 2400 Hz;
Receive Originate: 2400 Hz; Receive Answer:
1200 Hz
Carrier Frequencies, 300 bps (Bell Standard) —
1270 Hz Mark, 1070 Hz Space for Transmit
Originate; 2225 Hz Mark, 2025 Hz Space for
Receive Originate; 2225 Hz Mark, 2025 Hz Space
for Transmit Answer; 1270 Hz Mark, 1070 Hz
Space for Receive Answer

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
Carrier Frequencies, V.21 — 980 Hz Mark, 1180 Hz
Space for Transmit Originate; 1650 Hz Mark, 1850
Hz Space for Transmit Answer; 1650 Hz Mark,
1850 Hz Space for Receive Originate; 980 Hz
Mark, 1180 Hz Space for Receive Answer
Carrier Frequencies, V.23 — 390 Hz Mark, 450 Hz
Space for Transmit Originate; 1300 Hz Mark, 2100
Hz Space for Transmit Answer; 1300 Hz Mark,
2100 Hz Space for Receive Originate; 390 Hz
Mark, 450 Hz Space for Receive Answer
Carrier Frequencies, Fax — V.21 CH2: Transmit
Originate: 1650 Hz Mark, 1850 Hz Space; Half
Duplex: Transmit Answer: 1650 Hz Mark, 1850 Hz
Space; V.27ter: Originate/Answer: 1800 Hz; V.29
QAM: Originate/Answer: 1800 Hz; V.17 TCM:
Originate/Answer: 1800 Hz
Transmit Level — -10 dBm (dial-up)
Frequency Stability — ±0.01%
Receiver Sensitivity — -43 dBm under worst-case
conditions
AGC Dynamic Range — 43 dB

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
Interface — EIA RS232C/CCITT V.24
Connectors — DB25 (RS-232C) connector; Two
RJ-11 modular phone jacks (one for line, one for
telephone set), and power jack.
Diagnostics — Power-On Self-Test, Local Analog
Loop, Local Digital Loop, Remote Digital Loop.
Indicators — LEDs for Send Data, Receive Data,
Carrier Detect, various speed indicators, Off Hook,
Terminal Ready, Error Correction, Fax.
Controls — Power ON/OFF Switch
Speaker — 2-inch cone with software- or command-
controlled volume
Operating Temperature — 32 to 120°F (0 to 50°C)
Power Requirement — MD1620A: 115 VAC, 60 Hz,
0.3 amp (2-prong outlet-mounted transformer);
MD1620A-JAP: Input voltage: 100 VAC, Input
frequency: 60/50 Hz; Output voltage: 14 V,
714 mA; International models: 240V/50Hz
optional
Power Consumption — 5 Watts

13
MINI-MODEM (56 KBPS DATA/FAX MODEM)
Regulatory Compliance — UL, CUL, CSA, FCC
Size — 5.6"H x 4.25"W x 1.15"D
(14.8 x 10.8 x 2.9 cm)
Weight — 0.5 lb. (1.1 kg)

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
2. Introduction and Description
2.1 Introduction
This User’s Manual will help you install, configure, test
and use your Mini-Modem (56 kbps Data/Fax Modem).
2.2 Product Description
Your Mini-Modem incorporates a modem technology
called K56flex™ that enables Internet connections at
data rates up to 56 kbps over standard telephone lines.
(In the United States, FCC regulations limit transmission
speed to 53 kbps.) K56flex technology is able to propel
data downstream from the Internet to your computer at
speeds of up to 56 kbps because data is digitally encoded
instead of modulated. Upstream transmission, mostly
keystroke and mouse commands from your computer
to the central site, continues to flow at the conventional
data rate of 33.6 kbps.
Your Mini-Modem offers interactive automatic dialing,
as well as command mode option configuration. You
may store four command lines or telephone numbers,
of up to 40 characters each, in the modem’s nonvolatile
memory. The modem pulse or tone-dials, and recog-

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
nizes dial tones and busy signals for reliable call-progress
detection. The modem can detect AT&T calling card
tones. It is FCC-Registered for connection to telephone
networks without any Data Access Arrangements
(DAAs).
NOTE
Though this modem is capable of 56-kbps download
performance, government regulations, line impairments,
public telephone infrastructure, and other external
technological factors currently prevent maximum 56-kbps
connections.
The Mini-Modem is a desktop fax/modem for
compatible IBM Personal Computers. It provides
ial-up asynchronous communication capability with
other personal computers, terminals, on-line computer
services, or other types of computer systems.
Connection to the phone line and/or an attached
telephone device is made by RJ-11 modular connectors;
the PC connection is made via an RS-232C/V.24 serial
cable receptacle; and low-voltage DC power is supplied
to the Mini-Modem through a modular power-supply
connection included with the modem. All these
connections are located on the rear of the Mini-Modem.
Hardware installation procedures are described in
Chapter 3.

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
General features include:
• Compliance with major ITU-T, TIA, and EIA
international standards to ensure compatibility
with other modems.
• Distinguishes data and fax calls.
• Caller ID to identify your caller’s phone number
(available on U.S. products).
Data
• Supports K56flex™for data transmission speeds up
to 56 kbps, while maintaining compatibility with
lower-speed modems.
NOTE
The K56flex standard asymmetrically transfers data—
client downloads at speeds up to 56 kbps, client
uploads at speeds up to 33.6 kbps.
• Supports the enhanced ITU-T V.34 standard, with
data transmission speeds to 33.6 kbps, while also
maintaining compatibility with lower-speed
modems.
• Supports K56flex speeds plus 33.6K, 31.2K, 28.8K,
26.4K, 24K, 21.6K, 19.2K, 16.8K, 14.4K, 12K, 9.6K,
7.2K, 4.8K, 2.4K, 1.2K, and 0-300 bps.

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
• Automatic fallback to slower speeds in noisy line
conditions, and fall-forward to faster speeds as
conditions improve (line-quality monitoring).
• ITU V.42 LAP-M and MNP Class 3 and 4
error correction.
• ITU V.42bis (4-to-1) and MNP 5 (2-to-1)
data compression.
• MNP10 and MNP10EC™enhanced
Cellular Performance (error correction).
• H.324 compliant (videophone ready).
• Automatic disabling of compression when
transferring already-compressed files.
• Autodial, redial, pulse (rotary) and touch-tone
dial.
• Dial tone and busy signal detection for reliable
call-progress detection.
• Distinctive ring support to route voice, data,
or fax calls on a single phone line.
• Plug and Play (PnP) serial support.

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
• Flash-ROM upgradable.
• Compatibility with the standard AT command
set used by most communication programs.
Fax
• Supports V.17, Class 1/Group 3 fax
communication standards, allowing it to
communicate with other fax modems as
well as with fax machines.
• Sends and receives faxes from your computer
at 14,400 bps, 9600 bps, 7200 bps, 4800 bps,
2400 bps, or 300 bps.
2.2.1 W HAT I
SIN Y OUR M ODEM P ACKAGE ?
Your Mini-Modem has several components:
• Mini-Modem (56 kbps Data/Fax Modem)
• DC power supply
• One set of four plastic feet
• Telephone cord
• This User Manual

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MINI-MODEM (56 KBPS DATA/FAX MODEM)
• Communications Software
• One Set-Up diskette
If any of these items are missing, please contact Black
Box at 724-746-5500.
2.2.2 H OW TO U SE T HIS M ANUAL
This manual is divided into six chapters and two
appendixes:
• Chapter 1, Specifications, lists relevant technical
specifications for the Mini-Modem.
• Chapter 2, Introduction and Description, begins
with a short product introduction and description,
followed by a guide (which you are now reading)
to the use of this manual.
• Chapter 3, Installation and Connection,
documents the procedure for connecting the
Mini-Modem to your computer and to the phone
line. There is also a Troubleshooting section in
case your Mini-Modem is not operating properly.