Black Box MD1621A User Manual
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Black Box MD1621A User Manual

Black Box MD1621A User Manual

Mini-modem (33.6 kbps data/fax modem)
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JUNE 2001
MD1621A
Mini-Modem
(33.6 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 724-746-0746
Mail order: 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. 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 724-746-0746 Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...

  • Page 2: Industry Canada

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 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. 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...
  • Page 3 MINI-MODEM (33.6 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.
  • Page 4 MINI-MODEM (33.6 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.
  • Page 5 MINI-MODEM (33.6 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 MT2834ADX. This is the correct software for your Mini-Modem.

  • Page 6: Table Of Contents

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) CONTENTS 1. Specifications ......9 2. Introduction ......14 2.1 General .
  • Page 7 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 3.6.2 Removing Your Old Modem from Windows 95 or 98 ....24 3.7 Step 4: Install and Configure Your Software ......25 Third Party Communications Software .
  • Page 8 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 6. Troubleshooting ......79 6.1 Introduction ......79 6.2 None of the LEDs Light When the Modem Is On.
  • Page 9 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Appendix B: Service and Calling for Technical Support ..... . 98 B.1 Calling for Technical Support..98 B.2 About the Internet .

  • Page 10: Specifications

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 1. Specifications Data Rates (Modem) — 33.6 kbps and 31.2 kbps, 28.8, 26.4, 24, 19.2, 16.8, 14.4, and 12 kbps, 9600 bps, 7200, 4800, 2400, 1200 and 0-300 bps Data Rates (Fax) — 14,400, 9600, 4800 and 2400 bps Data Format (Modem) —...
  • Page 11 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Mode of Operation — Half- or full-duplex over dial- up lines; automatic or manual dialing, automatic or manual answer Flow Control — XON/XOFF, hardware (RTS/CTS), HP (ENQ/ACK) Intelligent Features — Fully AT command compatible, autodial, redial, repeat dial, pulse or tone dial, dial pauses, call status display, auto parity and data-rate selections, keyboard- controlled modem options, on-screen displays for...
  • Page 12 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Carrier Frequencies, ITU-T V.34 — 1600, 1646, 1680, 1800, 1829, 1867, 1920, 1959, 2000 Hz Carrier Frequencies, AT&T V.32 terbo/ITU-T V.32bis/V.32 — 1800 Hz Carrier Frequencies, V.22bis/V.22 or Bell 212A Standard (2400 & 1200 bps) —Transmit originate: 1200 Hz;...
  • Page 13 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Receiver Sensitivity — -43dBm under worst-case conditions AGC Dynamic Range — 43 dB Interface Connectors — EIA RS-232C/ITU-T V.24/V.28 DB25 RS-232C connector; two RJ-11 phone jacks (one RJ-11 jack on UK and international modems), power jack Cables —...
  • Page 14 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Enviromental — Temperature range 0 to 50 °C (32 to 120 °F); Humidity range 20 to 90% (non-condensing) Power Requirements — 100-130 VAC, 50/60 Hz, 0.1A/5W; two-prong outlet-mounted transformer (included); 230V/50 Hz optional (international) Regulatory Compliance — UL, CUL, CSA, FCC Size —...

  • Page 15: Introduction

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 2. Introduction 2.1 General The Mini-Modem (MD1621A) complies with the enhanced V.34 standard for a top speed of 33,600 bps. It’s downward-compatible with all previous standards, including V.32terbo (19,600 bps), V.32bis (14,400 bps), V.32 (9600 bps), V.22bis (2400 bps), and V.22 (1200 bps)—and it’s a full-duplex intelligent modem with V.42...
  • Page 16 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • This User manual • Communications (datacomm) software If any of these items are missing, please contact Black Box immediately at 724-746-5500.

  • Page 17: Quick Start

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 3. Quick Start 3.1 Introduction We know you’re eager to get your Mini-Modem up and running, so we’ll skip the features for now, and show you step-by-step how to set it up, check it out, and make your first calls.

  • Page 18: What You'll Need

    3.3 What You’ll Need Before starting, please make sure you have everything you need: We supply: • The Mini-Modem (MD1621A) • A DC power supply module • One set of four plastic feet • One telephone cable • Communications (datacomm) software •...

  • Page 19: Step 1: Assemble The Modem

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • A nearby AC power outlet • A nearby telephone line jack If you are unfamiliar with computers, please see Chapter 4, Features, for more information on the required equipment before you proceed. 3.4 Step 1: Assemble the Modem The only assembly required is to mount the feet on the bottom of the modem.

  • Page 20: System

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Figure 3-1. Mounting the feet. 3.5 Step 2: Connect the Modem to Your System Placing the Mini-Modem in a convenient location, connect it to your computer’s serial port, to the telephone line, to AC power, and, optionally, to your telephone.
  • Page 21 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) POWER RS-232 PHONE LINE Figure 2-2. Mini-Modem connections.

  • Page 22: Connection

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 3.5.1 RS-232 C ONNECTION Plug one end of the serial cable into the RS-232 connector on the modem, and the other end into a serial port on your computer, such as COM1 or COM2. 3.5.2 LINE C ONNECTION Plug one end of the phone cable into the Mini-Modem’s LINE jack, and the other end into a phone-line wall jack.

  • Page 23: Power Connection

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 3.5.4 POWER C ONNECTION Plug the power-supply module into an AC power outlet or power strip. Plug the power supply’s cable into the POWER jack on the modem. NOTE Use only the power supply supplied with the Mini-Modem. Using any other power supply could damage the modem.

  • Page 24: Windows 95 Or 98

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 3.6.1 A DDING THE ODEM TO INDOWS 1. Click the Start button, point to Settings, and click Control Panel. 2. Double-click the Modems icon. If no modem is currently installed, the Install New Modem wizard appears.

  • Page 25: Windows 95 Or 98

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Modem”), click Change. A dialog box with a list of manufacturers and a list of modems appears. 6. Select “MultiTech Systems” from the Manufacturers list box, then select “MultiModem MT2834ZDX” from the Models list box. 7.

  • Page 26: Step 4: Install And Configure Your

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 3. In the list box, select the old modem. 4. Click Remove, then click Close. 5. The next time you dial a HyperTerminal connection, it will select your new modem and ask you to confirm the selection. 3.7 Step 4: Install and Configure Your Software You must have communications software installed in your computer to use the Mini-Modem.
  • Page 27 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Setup, Advanced; and in MultiExpress Terminal for Windows, select Setup, Terminal, Modem.) 3. Choose the MultiModemZDX or MT2834ZDX from the software’s modem list. 4. Change the modem initialization string, if necessary. In most circumstances, AT&FX4S0=0 works best for a PC, and AT&FX4&E13&D0S0=0 works best for a Macintosh.
  • Page 28 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) modem’s maximum transmission speed or faster; however, not all serial ports can handle speeds that high. Set the serial-port baud rate to 115,200 bps if your computer has a high-speed serial port with a 16550AFN UART or equivalent and Windows 95 or 98;...
  • Page 29 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 8. If the software allows you to edit the no-connect messages (NO CARRIER, BUSY, NO ANSWER, NO DIALTONE), make sure there is no space between DIAL and TONE in NO DIALTONE. 9. Refer to the software manual or online Help for other configuration choices;...

  • Page 30: Features

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 4. Features 4.1 What Can I Do with My Mini-Modem? You can use your Mini-Modem to access commercial online information services such as CompuServe, America Online, Genie, and Prodigy. These services provide access to databases, encyclopedias, stock reports, news, weather, and shopping.
  • Page 31 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) You can also use the Mini-Modem to dial into bulletin- board services (BBSs). BBSs offer some of the services provided by online information services—usually email, public message areas, and file transfers. Most are run as hobbies by individuals, but some are services provided by companies.
  • Page 32 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) The Mini-Modem’s features include: • Support of data rates of 33,600 and 31,200 bps, 28,800, 26,400, 24,000, 21,600, 19,200, 16,800, 14,400, 12,000, 9600, 7200, 4800, 2400, 1200, and 300 bps for communicating with older modems as well as with other V.34 modems.

  • Page 33: Required Equipment

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • On-screen help menus. • Nonvolatile memory for storage of custom settings and two telephone numbers. • Sends and receives faxes from your computer at 14,400, 9600, 4800, and 2400 bps. • Responds to EIA TR29.2 Class 2 fax commands. 4.2 Required Equipment In addition to the contents of the Mini-Modem package, you need the following equipment.
  • Page 34 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • Serial Cable: To connect the Mini-Modem to your computer, you must provide a serial cable, obtainable at computer stores and many office supply stores. The cable should have a male DB25 connector at the modem end. For IBM and compatible computers, the other end may have a female DB25 connector or a female DB9 connector, depending on your computer.

  • Page 35: Connections

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • Communications Software: To operate the Mini- Modem, you must have data-communications (datacomm) and fax-communications software. The Mini-Modem comes with a data and fax communications package. You must have Microsoft Windows 3.1 or later to run this software.

  • Page 36: Connecting To The Computer

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 4.3.1 C (“RS-232”) ONNECTING TO THE OMPUTER Using a matching serial cable, connect the RS-232 connector on the modem to one of the serial ports on the back of your computer. On an IBM PC or compatible, there are usually two serial ports named “COM1”...

  • Page 37: Connecting To Power ("Power")

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) convenience; you may also connect your telephone to a duplex jack inserted into your wall jack. NOTE The PHONE jack is not interchangeable with the LINE jack; do not plug the telephone into the LINE jack or vice-versa. 4.3.4 C (“POWER”) ONNECTING TO...

  • Page 38: Surge Protectors And Lightning

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 4.3.5 S URGE ROTECTORS AND IGHTNING Power surges and other transient voltages on power lines, such as those caused by lightning strikes, can damage or destroy your modem. Damaging voltages can also enter your modem through the telephone line, especially during an electrical storm.
  • Page 39 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) The Mini-Modem has ten LED indicators on the front panel that indicate status, configuration, and activity: • TD: Transmit Data. The TD LED lights when the modem is transmitting data to another modem. The state of the LED matches the TD circuit on pin 2 of the RS-232C/V.24 interface.
  • Page 40 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • 14: 14,400 bps. The 14 LED lights by itself when the modem connects at 14,400 bps. The 14 LED lights or blinks in combination with the 28 LED to indicate speeds between 16,800 and 26,400 bps (see the table on page 41).

  • Page 41: Speed Indicator Blink Rates

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) correction mode, and blinks when compression is activated. • FX: Fax. The FX LED lights when the modem is in fax mode. NOTE When you turn on the Mini-Modem, the speed lights flash briefly as the modem does a self-test, then the LED for the default modem baud rate lights.
  • Page 42 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Mini-Modem Data Rates. Data Rate (bps) 33 LED 14 LED 96 LED <9.6K 9.6K 12.0K 14.4K 16.8K (V.32terbo) 19.2K (V.32terbo) 16.8K (V.34) 19.2K (V.34) 21.6K 24.0K 26.4K 28.8K 31.2K 33.6K Slow blink (1/sec.) Fast blink (5/sec.)

  • Page 43: Codes

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 5. AT Commands, S-Registers, and Result Codes 5.1 AT Commands This section summarizes your modem’s AT commands. Command: Attention Code Values: Description: The attention code precedes all command lines except A/, A:, and escape codes. Command: RETURN Key Values:...
  • Page 44 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) with AT. Do not press RETURN to execute. Command: Continuous Redial Values: Description: Redial last number until answered. Do not precede this command with AT or press RETURN to execute. Command: &An Answerback Values: n = 0 or 1 Default: Description: &A0 Disables answerback.
  • Page 45 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Buffer data received during establishment of a reliable connection. Command: Auto Speed Detection in Answer Mode Values: n = 0–3 Default: Description: #A0 Start at maximum speed and fall back to a lower speed (26400, 24000, 21600, 19200, 16800, 14400, 12000, 9600, 7200, 4800, 2400, 1200, or 300 bps) as line...
  • Page 46 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Description: B1 Select Bell answer tones, including Bell 103. Command: &BSn Maximum Reliable Block Size Values: n = 0 or 1 Default: Description: &BS0 Maximum transmit block size of 64 characters. &BS1 Maximum transmit block size of 256 characters.
  • Page 47 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Description: &C0 Force Carrier Detect high. &C1 Let Carrier Detect follow carrier signal. &C2 Let Carrier Detect drop on disconnect, then go high again (for some CBX phone systems). &C4 Reset modem when Carrier Detect drops.
  • Page 48 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Command: DsNd Store Telephone Number Values: s = dial string (phone number and dial modifiers) d = 0 or 1 Default: none Description: To store, enter D followed by dial string s, then N followed by directory number d.
  • Page 49 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Command: DTR Dialing Values: n = 0 or 1 Default: Description: $D0 Do not dial when DTR goes high. Dial stored number N0 when DTR goes high. Command: %DCn AT Command Control Values: n = 0 or 1 Default: Description: %DC0 The modem responds to AT commands.
  • Page 50 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 75Hz increments from 150Hz to 3750Hz. Command: %DPn Read Line Probe Data Values: n = 0 or 1 Default: Description: %DP0 Do not read and store line probe information from DSP during handshake. %DP1 Read and store line probe information from DSP during handshake.
  • Page 51 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Description: E0 Do not echo keyboard input to the terminal. Do echo keyboard input to the terminal. Command: &En V.42 Error-Correction Modes Values: n = 0, 1, or 2 Default: Description: &E0 V.42 non-error-correction mode (V.42 disabled).
  • Page 52 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Description: &E6 Respond to and discard XON/XOFF characters when &E5 is selected. &E7 Respond to and pass through XON/XOFF characters when &E5 is selected. Command: &En Hewlett-Packard ENQ/ACK Pacing Values: n = 8 or 9 Default: Description: &E8 Ignore ENQ/ACK pacing...
  • Page 53 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Command: &En Pacing (Computer-Initiated Flow Control) Values: n = 12 or 13 Default: Description: &E12 Pacing disabled. &E13 Pacing enabled. Command: &En Data Compression Values: n = 14 or 15 Default: Description: &E14 Data compression disabled. &E15 Data compression enabled.
  • Page 54 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) $EB1 11-bit mode enabled. Command: Escape Sequence Options Values: n = 0–5 Defaults: 1 and 4 Description: %E0 Modem won’t escape. +++AT<CR> method. <BREAK>AT<CR> method. Both +++AT<CR> and <BREAK>AT<CR> methods. No OK response to +++AT<CR>. OK response to +++AT<CR>.
  • Page 55 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) &F9 Read values stored in non-volatile memory when &F is issued (effective only if you store &F9 using &W0). Command: Enable/Disable Auto-Reliable Fallback Character Values: n = 0 or 1 Default: Description: $F0 Do not fall back to non-error- correction mode connect if <CR>...
  • Page 56 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Command: Fallback Modes When On Line Values: n = 0, 1, or 2 Default: Description: #F0 No fallback when on line. Fall back decrementally from maximum speed to 4800 bps as line conditions deteriorate. Fall back decrementally to 4800 bps;...
  • Page 57 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Command: Help Screens Values: n = 1, 2, or 3 Default: None Description: $H1 Display Help Screen #1. Display Help Screen #2. Display Help Screen #3. Command: Inquire Product Codes Values: n = 0, 1, or 2 Default: None Description: I0...
  • Page 58 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Description: Stores a new remote-configuration login password. Command: List Commands Values: n = 0, 5–8 Default: None Description: L List stored telephone numbers. List current operating parameters. List current S-register values. List additional current operating parameters.
  • Page 59 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Command: V.42 Mode Selection in Originate Mode Values: n = 0, 1, 2, or 3 Default: Description: #L0 Modems negotiate V.42 mode. MNP on & LAP-M off. LAP-M on & MNP off. Disable detection phase and go directly to LAP-M.
  • Page 60 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) $MB1200 Originate call at 1200 bps. $MB2400 Originate call at 2400 bps. $MB4800 Originate call at 4800 bps. $MB7200 Originate call at 7200 bps. $MB9600 Originate call at 9600 bps. $MB14400 Originate call at 14,400 bps. $MB16800 Originate call at 16, 800 bps.
  • Page 61 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Description: Return to online mode after you have used an escape sequence to go from online mode to command mode. Command: Pulse Dial Values: Default: Description: The modem pulse-dials numbers that follow P in the dialing command.
  • Page 62 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) intelligent while turning off answer-mode responses and echo. Command: &Qn Multi-Tech or Standard Result Codes Values: n = 0 or 1 Default: Description: &Q0 Multi-Tech responses with modifiers. &Q1 Standard AT responses with no modifiers. Command: Reverse Originate/Answer Modes Values:...
  • Page 63 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) &R2 Let CTS drop on disconnect for time set by S24, then go high again. Command: &RAn Asymmetrical Bit Rate Values: n = 0 or 1 Default: Description: &RA0 Enable asymmetrical bit rate in V.34 mode. &RA1 Disable asymmetrical bit rate in V.34 mode.
  • Page 64 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) &RF1 Let CTS act independently (use with &R). Command: &RN Rate Negotiation Values: Description: Forces the modem to perform a rate renegotiation while on line. You must escape to command mode to issue this command. Command: &RP Immediate Line Probe...
  • Page 65 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Command: Retransmit Count Values: n = 0 or 1 Default: Description: $R0 Disconnect after 50 retransmits of a data block. Do not disconnect after 50 retransmits. Command: Sr=n Set Register Value Values: r = S-register number; n varies Default: None Description:...
  • Page 66 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Description: &S0 Force DSR high (on). &S1 Let DSR follow CD. &S2 DSR drops on disconnect, then goes high again. (Used by some CBX phone systems.) Command: &SFn DSR/CD Interaction Control Values: n = 0 or 1 Default: Description: &SF0 Select DSR to follow CD.
  • Page 67 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) NOTE: Baud adjust must be off ($BA0) to enable fixed baud rate. Command: Enter Setup Password Values: y= password (6–10 characters) Default: MODEMSETUP Description: Enters the remote configuration setup password. Command: #S=y Store Setup Password Values: y= password (6–10 characters) Default:...
  • Page 68 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Default: Description: &T4 Enable response to remote digital loopback signal. &T5 Disable response to remote digital loopback signal. Command: Trellis-Coded Modulation Values: n = 0 or 1 Default: Description: #T0 Disable trellis-coded modulation. Enable trellis-coded modulation. Command: Loopback Test Modes Values:...
  • Page 69 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Command: Result Codes (Verbose/Terse) Values: n = 0 or 1 Default: Description: V0 Result codes sent as digits (terse response). Result codes sent as words (verbose response). Command: V.32terbo Handshake Tones Values: n = 0 or 1 Default: Description: #V0 Include V.32terbo tones in...
  • Page 70 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Default: Description: &W0 Store current settings in NVRAM; load them at power-on or following the ATZ command instead of loading the factory defaults from ROM. &W1 Clear user default settings from NVRAM. Command: Result Codes and Call-Progress Selection Values: n = 0–4...
  • Page 71 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Extended result codes with NO DIALTONE and BUSY. Command: Number of XOFF Characters Sent Values: n = 0 or 1 Default: Description: #X0 Single XOFF character sent after buffer is full. Multiple XOFF characters sent (one for every character received after buffer is full).
  • Page 72 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Description: Reset modem to default values. Defaults come from user NVRAM if &W0 is set, from factory ROM if &W1 is set. Command: Dialing Pause Values: Description: Placed in dialing command, comma causes dialing pause for time set by S8.
  • Page 73 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Command: Flash On-Hook Values: Description: Placed in dial command, exclamation point causes modem to flash on-hook. Command: Quiet Answer Values: Description: Placed in dial command, @ causes modem to wait for a ringback, then 5 seconds of silence, before processing next part of command.
  • Page 74 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Description: Initiates remote-configuration mode while online with remote modem. The remote- configuration escape character (%) is defined in register S13. Command: +++AT<CR> Escape Code Values: Description: Puts modem in command mode (and optionally issues a command) while remaining on line.

  • Page 75: S-Registers

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) must set the modem to %E2 or %E3 before you can use this escape method. 4.2 S-Registers Certain modem values, or parameters, are stored in memory locations called S-registers. Use the S command to read or to alter the contents of S-registers (see previous section).
  • Page 76 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Register Unit Range Default Description 1 sec. 1–255 Sets the time the modem 1–45 will wait for a carrier signal before aborting a call. 1 sec. 0–255 Sets the length of a pause 4–255 caused by a comma character in a dialing command.
  • Page 77 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Register Unit Range Default Description 50 ms 0–255 Sets the time the DSR, CTS, and CD signals drop before going high again. Used for some PBX and CBX phone systems. 100 ms 0, 1–255 Sets the time the DTR signal must be dropped before the modem disconnects.

  • Page 78: Result Codes

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Register Unit Range Default Description decimal 28, 26, Sets fixed V.34 connect 24, 21, speed. 28 = 28800 bps; 19, 16, 26 = 26400 bps;. . . 48 = 14, 12, 4800 bps. 0 default disables 96, or 48 this feature.
  • Page 79 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) &Q0 Mini-Modem Result Codes &Q1 Standard AT Result Codes Terse Verbose Terse Verbose CONNECT CONNECT RING RING NO CARRIER NO CARRIER ERROR ERROR *CONNECT 1200 CONNECT 1200 NO DIALTONE NO DIAL TONE BUSY BUSY NO ANSWER NO ANSWER CONNECT 2400 CONNECT 2400...

  • Page 80: Troubleshooting

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 6. Troubleshooting 6.1 Introduction Your Mini-Modem was thoroughly tested at the factory before it was shipped. If you are unable to make a successful connection, or if you experience data loss or garbled characters during your connection, it is possible that the modem is defective.
  • Page 81 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • You are getting garbage characters on the monitor. • You can’t run your fax and communications software at the same time. If you experience problems, please check the following possibilities before calling Tech Support (see Appendix B).

  • Page 82: Commands

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • If the power strip is on and the modem switch is on, try moving the modem power supply to another outlet on the power strip. • Test that the outlet is live by plugging a lamp into it.
  • Page 83 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • Make sure you are in terminal mode in your data comm software. Type AT and press ENTER. If you get an OK response, your connections are good and the problem likely is in your phonebook entry or session settings.
  • Page 84 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • Your communications-software settings may not match the physical port the modem is connected to. The serial cable may be plugged into the wrong connector—check your computer documentation to make sure. Or you may have selected a COM port in your software other than the one the modem is physically connected to—compare the settings in your software to the physical...
  • Page 85 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) To look for address or IRQ conflicts if you use Windows 3.1x, select File, Run in Program Manager, type MSD, and press ENTER. Then select Mouse, COM Ports, and IRQ Status and note the addresses and IRQs that are in use.
  • Page 86 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Interrupt Request. If another device is using the same address range or IRQ, it will appear in the Conflicting Device List. Uncheck Use Automatic Settings to change the port’s settings so they do not conflict with the other device, or select the port the conflicting device is on and change it instead.
  • Page 87 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • a wrong dial tone. • a busy signal. • a wrong number. • no modem at the other end. • a faulty modem, computer, or software at the other end. • incompatibility between modems. You can narrow the list of possibilities by using extended result codes.
  • Page 88 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) phone system (PBX) with an internal dial tone that sounds different from the normal dial tone. In that case, the modem may not recognize the dial tone and may treat it as an error. Make sure your modem’s square wave ring detection is turned on (&RD1).
  • Page 89 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) To change the dial prefix in Windows Terminal, select Settings, Modem Commands. To change it in Windows 95 or 98 HyperTerminal, select Call, Connect from the menu bar, click Dialing Properties, and type 9 in the local and long- distance boxes in How I Dial from This Location.

  • Page 90: The Modem Disconnects While Online

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 6.5 The Modem Disconnects While Online • If you have call waiting on the same phone line as your modem, it may interrupt your connection when someone tries to call you. If you have call waiting, disable it before each call.

  • Page 91: Answering

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) you can install a device that prevents extensions from accidentally interrupting your transmission— for example, The Eliminator (product code FA100). • Check for loose connections between the modem and the computer, the telephone jack, and AC power.

  • Page 92: Should Be

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 6.7 File Transfer Is Slower Than It Should Be • You may have an older UART. For best throughput, install a 16550AFN UART or an ISI serial port card. See the “Quick Start” chapter for information on how to identify your UART.

  • Page 93: I Am Losing Data

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) • Try entering the L8 (List Online Diagnostics) command in online mode, making a screen print of the diagnostics listing, and checking for parameters that may be unacceptable (number of retrains, round-trip delay, etc.). 6.8 I Am Losing Data •...

  • Page 94: I Am Getting Garbage Characters On

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) command in online mode, making a screen print of the diagnostics listing, and checking for para- meters that may be unacceptable (number of retrains, round trip delay, etc.). 6.9 I Am Getting Garbage Characters on the Monitor •...

  • Page 95: My Fax And Communications Software Won't Run At The Same Time

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) 6.10 My Fax and Communications Software Won’t Run at the Same Time Communications devices can be accessed by only one application at a time. Under DOS or Windows 3.1x, you can run either your fax software or your datacomm software, but not both at the same time.

  • Page 96: Appendix A: Regulatory Information

    Appendix A: Regulatory Information A.1 Single-User Software License Agreement Black Box grants Customer the right to use one copy of the software on a single computer (the Licensed System). You may not network the software or otherwise use it on more than one computer or computer terminal at the same time.

  • Page 97: Canadian Limitations Notice

    MINI-MODEM (33.6 KBPS DATA/FAX MODEM) A.3 Canadian Limitations Notice NOTICE: The Industry Canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements. The Industry Canada label does not guarantee the equipment will operate to the user’s satisfaction.
  • Page 98 MINI-MODEM (33.6 KBPS DATA/FAX MODEM) Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas. CAUTION Users should not attempt to make such connections themselves, but should contact the appropriate electric...

  • Page 99: Technical Support

    If you have any questions about the operation of this unit, please call Black Box Technical Support at 724-746-5500. B.2 About the Internet You can also email questions to Black Box at this address: info@blackbox.com Visit the Black Box Web site at:...
  • Page 100 © 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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