Black Box MD1621A Page 18 User Manual Download

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MINI-MODEM (33.6 KBPS DATA/FAX MODEM)

• Do not use a telephone in the vicinity of a gas leak.

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

• This user manual

You supply:

• A computer with an unused external serial port

• A shielded RS-232 serial cable with a male DB25

connector on one end and a connector to match
your computer’s serial port on the other end

Summary of Contents for MD1621A

Page 1: ...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 1...

Page 2: ...uipment 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 wha...

Page 3: ...de ba o lavabo s tano mojado o cerca de una alberca etc 6 El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante 7 El aparato el ctrico debe se...

Page 4: ...ci n a los contactos y recept culos donde salen del aparato 14 El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa...

Page 5: ...e 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 MT2834AD...

Page 6: ...on 16 3 2 Safety Warnings 16 3 3 What You ll Need 17 3 4 Step 1 Assemble the Modem 18 3 5 Step 2 Connect the Modem to Your System 19 3 5 1 RS 232 Connection 21 3 5 2 LINE Connection 21 3 5 3 PHONE Con...

Page 7: ...ini Modem 29 4 2 Required Equipment 32 4 3 Connections 34 4 3 1 Connecting to the Computer RS 232 35 4 3 2 Connecting to the Telephone Line LINE 35 4 3 3 Connecting a Telephone Set PHONE 35 4 3 4 Conn...

Page 8: ...connects While Online 89 6 6 The Modem Cannot Connect When Answering 90 6 7 File Transfer Is Slower Than It Should Be 91 6 8 I Am Losing Data 92 6 9 I Am Getting Garbage Characters on the Monitor 93 6...

Page 9: ...8 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 98...

Page 10: ...Asynchronous Compatibility Modem ITU T V 34 AT T V 32terbo ITU T V 32bis V 32 Bell 212A and 103 113 ITU T V 22 V 22bis V 29 V 42 V 42bis Compatibility Fax ITU T Group 3 T 4 T 30 V 21 V 27ter V 29 V 17...

Page 11: ...data rate selections keyboard controlled modem options on screen displays for modem option parameters command lines of up to 60 characters each and help menus Command Buffer 60 characters Modem Modula...

Page 12: ...eceive answer 1200 Hz Carrier Frequencies Bell 103 113 300 bps Transmit originate 1270 Hz mark 1070 Hz space Receive originate 2225 Hz mark 2025 Hz space Transmit answer 2225 Hz mark 2025 Hz space Rec...

Page 13: ...One 14 foot 4 3 m RJ 11 phone cable USA external power transformer and cord NOTE Any cables connected to the computer should be shielded to reduce interference Diagnostics Power on self test local ana...

Page 14: ...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...

Page 15: ...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 error correction V 42bis data compression and V 17 14 400 bps Class 2...

Page 16: ...15 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: ...all telephone wiring during a lightning storm Never install a telephone jack in a wet location unless the jack is specifically designed for wet locations Never touch uninsulated telephone wires or ter...

Page 18: ...g 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 This user manual You supply A computer with an un...

Page 19: ...y required is to mount the feet on the bottom of the modem Simply peel the four self adhesive plastic feet off the backing strip and press them into the recesses on the bottom of the modem You can als...

Page 20: ...ODEM 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 powe...

Page 21: ...20 MINI MODEM 33 6 KBPS DATA FAX MODEM Figure 2 2 Mini Modem connections POWER RS 232 PHONE LINE...

Page 22: ...ck is not interchangeable with the PHONE jack Do not plug the phone into the LINE jack or the line cable into the PHONE jack NOTE The Federal Communications Commission FCC Industry Canada and the Brit...

Page 23: ...cated on the right side When you apply power the modem performs a diagnostic self test indicated by the speed indicators flashing in sequence for a second or two after which the 33 indicator should li...

Page 24: ...odem wizard 3 Click Next in the Install New Modem wizard Windows searches for your new modem and asks you to verify its selection NOTE If Windows cannot find a modem your modem may be turned off it ma...

Page 25: ...WINDOWS 95 OR 98 When your Mini Modem replaces another modem the old modem installation remains in Windows after you install the new modem and the old modem is still selected in HyperTerminal and oth...

Page 26: ...puter to use the Mini Modem If you wish to use communications software that is already installed you should reconfigure it for the Mini Modem otherwise install the data and fax communications software...

Page 27: ...string if you use WinCIM include E5 for WinCIM s software flow control If you want the modem to always answer the phone delete S0 0 from the string Depending on the software you may have to end the s...

Page 28: ...s To see what UART is in your serial port if you have Windows 3 1x select File Run in Program Manager type MSD and press RETURN Select COM Ports to see the UART type If you have Windows 95 or 98 selec...

Page 29: ...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 confi...

Page 30: ...low subscribers to trade information and opinions on a vast array of topics from A to Z while vendor forums provide hardware and software support from manufacturers Online services also allow you to u...

Page 31: ...can also telecommute with your fax modem work at home while communicating with the office by modem or fax And of course you can use your Mini Modem to send and receive faxes anywhere in the world enab...

Page 32: ...ic fallback to slower speeds in noisy line conditions and fall forward to faster speeds as conditions improve ITU T V 42 LAP M and MNP Classes 2 4 error correction Data transfer rates up to 115 200 bp...

Page 33: ...he following equipment Computer You can connect the Mini Modem to any computer with an RS 232C V 24 serial port such as the IBM PC XT AT and PS 2 computers and most PC compatibles It can also be conne...

Page 34: ...cintosh serial cable should be wired for hardware flow control To reduce electrical interference the FCC requires that the cable be shielded Telephone Line You must have a telephone line with a jack c...

Page 35: ...ackage You must have Microsoft Windows 3 1 or later to run this software If you require software for DOS or for the Macintosh operating system please contact Technical Support at 724 746 5500 The Mini...

Page 36: ...8 connectors for the serial ports Choose the one marked with the icon of a telephone the Macintosh gives priority to that port and will not interrupt your communications link Be sure to tighten the mo...

Page 37: ...onvenient AC power outlet or surge protector Plug the connector on the other end of the power cord into the POWER jack on the modem A power on off switch is located on the right side of the modem NOTE...

Page 38: ...fore we recommend that you plug the Mini Modem into a surge protector rather than directly into a wall outlet preferably a surge protector that provides protection against electrical spikes on the tel...

Page 39: ...em The state of the LED matches that of the RD circuit on pin 3 of the RS 232C V 24 interface CD Carrier Detect The CD LED lights when the modem detects a valid carrier signal from another modem It is...

Page 40: ...ting at less than 9600 bps OH Off Hook The OH LED lights when the modem is off hook which occurs when the modem is dialing online or answering a call The LED flashes when the modem pulse dials TR Term...

Page 41: ...te for the Mini Modem is 33 600 bps unless you select and store another baud rate After a call the LEDs for the connection s baud rate remain lit until another call is made or the modem is reset If yo...

Page 42: ...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 Off Slow blink 1...

Page 43: ...tion Code Values n a Description The attention code precedes all command lines except A A and escape codes Command RETURN Key Values n a Description Press the RETURN ENTER key to execute most commands...

Page 44: ...ntil answered Do not precede this command with AT or press RETURN to execute Command An Answerback Values n 0 or 1 Default 0 Description A0 Disables answerback A1 Enables answerback reply to an ID req...

Page 45: ...lt 0 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 conditions warrant A1 Maximum speed only...

Page 46: ...mit block size of 64 characters BS1 Maximum transmit block size of 256 characters Command BAn Baud Adjust Values n 0 or 1 Default 0 Description BA0 Set baud adjust off speed conversion on Serial port...

Page 47: ...systems C4 Reset modem when Carrier Detect drops Command CDn Cleardown at Disconnect Values n 0 1 Default 0 Description CD0 Execute a cleardown at disconnect CD1 Do not execute a cleardown at disconne...

Page 48: ...s then N followed by directory number d Example ATDT9 5551212N1 Command Dn Data Terminal Ready Control Values n 0 3 Default 2 Description D0 Modem ignores DTR signal D1 When DTR drops the modem hangs...

Page 49: ...ommand Control Values n 0 or 1 Default 0 Description DC0 The modem responds to AT commands DC1 The modem ignores AT commands NOTE The modem will respond to AT DC for 10 seconds after powerup Command D...

Page 50: ...d store line probe information from DSP during handshake DP1 Read and store line probe information from DSP during handshake Command DTn DTMF Detection Values n 0 or 1 Default 0 Description DT0 The mo...

Page 51: ...lues n 0 1 or 2 Default 1 Description E0 V 42 non error correction mode V 42 disabled E1 V 42 auto reliable mode E2 V 42 reliable mode V 42 enabled Command En Modem Initiated Flow Control Values n 3 4...

Page 52: ...when E5 is selected Command En Hewlett Packard ENQ ACK Pacing Values n 8 or 9 Default 8 Description E8 Ignore ENQ ACK pacing characters E9 Respond to ENQ ACK pacing characters Command En Non Error Cor...

Page 53: ...a Compression Values n 14 or 15 Default 15 Description E14 Data compression disabled E15 Data compression enabled Command En V 42 Error Correction at 300 bps Values n 0 or 1 Default 0 Description E0 V...

Page 54: ...3 Both AT CR and BREAK AT CR methods E4 No OK response to AT CR E5 OK response to AT CR Command Fn Load Default Configurations Values n 0 8 or 9 Default 8 Description F0 Load factory default values fr...

Page 55: ...or 1 Default 0 Description F0 Do not fall back to non error correction mode connect if CR is received during handshake F1 Fall back to non error correction mode connect if CR is received during hands...

Page 56: ...o 4800 bps as line conditions deteriorate F2 Fall back decrementally to 4800 bps fall forward when line conditions improve Command Gn Guard Tones Values n 0 1 or 2 Default 0 Description G0 Turn off IT...

Page 57: ...n Inquire Product Codes Values n 0 1 or 2 Default None Description I0 Display modem ID number I1 Display firmware version number I2 Display modem description Command Ix Enter Login Password Values x p...

Page 58: ...ers L6 List current S register values L7 List additional current operating parameters L8 List DSP code version number processor speed and online diagnostic parameters L9 List signal strength informati...

Page 59: ...Disable detection phase and go directly to LAP M Command Mn Modem Speaker Control Values n 0 1 2 or 3 Default 1 Description M0 Speaker always off M1 Speaker on until carrier signal detected M2 Speaker...

Page 60: ...14 400 bps MB16800 Originate call at 16 800 bps MB19200 Originate call at 19 200 bps MB28800 Originate call at 28 800 bps MB33600 Originate call at 33 600 bps Command Nd Dial a Stored Number Values d...

Page 61: ...ption The modem pulse dials numbers that follow P in the dialing command Command Pn Set Pulse Dial Ratios Values n 0 or 1 Default 0 Description P0 60 40 break make pulse ratio P1 67 33 break make puls...

Page 62: ...ti Tech responses with modifiers Q1 Standard AT responses with no modifiers Command Rn Reverse Originate Answer Modes Values n 0 or 1 Default 0 Description R0 Modem will not reverse modes R1 Modem wil...

Page 63: ...Description RA0 Enable asymmetrical bit rate in V 34 mode RA1 Disable asymmetrical bit rate in V 34 mode Command RDn Square Wave Ring Detect Values n 0 or 1 Default 1 Description RD0 Modem detects onl...

Page 64: ...st escape to command mode to issue this command Command RP Immediate Line Probe Values n a Description Initiates a retrain that makes the processor read line probe information if DP1 is selected Valid...

Page 65: ...ansmits Command Sr n Set Register Value Values r S register number n varies Default None Description Set value of register Sr to value of n where n is entered in decimal format Command Sr Read Registe...

Page 66: ...elect DSR to follow CD SF1 Select DSR to be independent Command SBn Serial Port Baud Rate Values n speed Default 57600 Description SB300 Set serial port to 300 bps SB1200 Set serial port to 1200 bps S...

Page 67: ...on Enters the remote configuration setup password Command S y Store Setup Password Values y password 6 10 characters Default MODEMSETUP Description Stores a new remote configuration setup password Com...

Page 68: ...Trellis Coded Modulation Values n 0 or 1 Default 1 Description T0 Disable trellis coded modulation T1 Enable trellis coded modulation Command Un Loopback Test Modes Values n 0 1 2 or 3 Default None D...

Page 69: ...as words verbose response Command Vn V 32terbo Handshake Tones Values n 0 or 1 Default 1 Description V0 Include V 32terbo tones in handshake V1 Exclude V 32terbo tones from handshake Command W Wait f...

Page 70: ...ettings from NVRAM Command Xn Result Codes and Call Progress Selection Values n 0 4 Default 0 Description X0 Basic result codes CONNECT only does not look for dial tone or busy signal X1 Extended resu...

Page 71: ...sent after buffer is full X1 Multiple XOFF characters sent one for every character received after buffer is full Command Yn Long Space Disconnect Values n 0 or 1 Default 0 Description Y0 Disable send...

Page 72: ...s n a Description Placed in dialing command comma causes dialing pause for time set by S8 Command Continuous Redial Values n a Description Placed at end of dial command a colon causes continuous redia...

Page 73: ...a Description Placed in dial command causes modem to wait for a ringback then 5 seconds of silence before processing next part of command Command Call Card Tone Detect Values n a Description Placed i...

Page 74: ...ription Puts modem in command mode and optionally issues a command while remaining on line Enter AT up to ten command characters or as defined by S34 and a RETURN Used mostly to issue hang up command...

Page 75: ...cription S0 1 ring 0 1 255 1 Sets the number of rings until the modem answers ATS0 0 disables autoanswer completely S1 1 ring 0 255 0 Counts the rings that have occurred S2 decimal 0 127 43 Sets ASCII...

Page 76: ...carrier signal and when it turns on its CD circuit S10 100 ms 1 254 7 Sets how long a carrier 255 signal must be lost before the modem disconnects S10 255 causes the modem to not disconnect with loss...

Page 77: ...ms S30 1 min 0 1 255 0 Sets how long the modem waits after the last character is received or transmitted before it disconnects The 0 default disables the timer S32 100 ms 0 255 20 Sets the time the m...

Page 78: ...um V 34 connect 28 26 speed 33 33600 bps 24 21 31 31200 bps 48 19 16 4800 bps 0 default disables 14 12 feature same as S48 33 96 or 48 4 3 Result Codes In command mode the Mini Modem can send response...

Page 79: ...ER 9 CONNECT 2400 10 CONNECT 2400 11 CONNECT 4800 11 CONNECT 4800 12 CONNECT 9600 12 CONNECT 9600 13 CONNECT 14400 13 CONNECT 14400 19 CONNECT 19200 19 CONNECT 19200 21 CONNECT 21600 21 CONNECT 21600...

Page 80: ...connection it is possible that the modem is defective However it is more likely that the source of your problem lies elsewhere The following symptoms are typical of problems you may encounter None of...

Page 81: ...n you turn on the Mini Modem the LED indicators on the front panel should flash briefly as the modem runs a self test If the LEDs remain off the modem is probably not receiving power Make sure the mod...

Page 82: ...roblem goes away the first modem or power supply may be defective Call Tech Support for assistance CAUTION Do not under any circumstances replace the power supply module with one designed for another...

Page 83: ...munications software Make sure you have done whatever is necessary in your software to make a port connection Not all communi cations programs connect to the COM port automatically Some connect when t...

Page 84: ...into the correct port the communications software is configured correctly and you still don t get an OK the fault may be in the serial cable Make sure it is firmly connected at both ends Is this the f...

Page 85: ...nge a port address or IRQ in Windows 3 1x double click the Control Panel icon then the Ports icon Click on the port you want to change click Settings click Advanced and select the new port address and...

Page 86: ...s or jumpers on the conflicting device refer to the device s documentation The serial port may be defective If you have another serial port install the modem on it change the COM port setting in your...

Page 87: ...mode or include V1X4 in the modem s initialization string If the modem reports NO DIALTONE check that the modem s telephone line cable is connected to both the modem s LINE jack not the PHONE jack and...

Page 88: ...cause the modem to ignore dial tones note however that X3 is not allowed in some countries such as France and Spain If the modem reports BUSY the other number may be busy in which case you should try...

Page 89: ...number If the modem reports NO CARRIER the phone was answered at the other end but no connection was made You might have dialed a wrong number and a person answered instead of a computer or you might...

Page 90: ...in the modem s dial prefix for example ATDT 70 note the comma which inserts a pause before the number is dialed To change the dial prefix in Windows Terminal select Settings Modem Commands To change i...

Page 91: ...wer You may have had a poor connection because of line conditions or the problem may have originated on the other end of the line Try again If you were online with a BBS it may have hung up on you bec...

Page 92: ...V to take full advantage of the UART s speed If you are using a slow transfer protocol such as Xmodem or Kermit try Zmodem or Ymodem G instead Is your line noisy If there is static on your line the mo...

Page 93: ...port baud rate to four times the data rate Your UART may not be reliable at serial port speeds over 9600 bps or 19 200 bps Turn off data compression reset your serial port speed to a lower rate or re...

Page 94: ...r communications software You may be experiencing line noise Enable error correction if it is disabled or hang up and call again you may get a better connection At speeds above 2400 bps the remote mod...

Page 95: ...evices 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 In Windows 95 or 98 you...

Page 96: ...r otherwise use it on more than one computer or computer terminal at the same time Customer must treat the software like any copyrighted material The software may not be assigned sublicensed translate...

Page 97: ...cations company The equipment must also be installed using an acceptable method of connection In some cases the company s inside wiring associated with a single line individual service may be extended...

Page 98: ...riate electric inspection authority or electrician as appropriate The Load Number LN assigned to each terminal device denotes the percentage of the total load to be connected to a telephone loop which...

Page 99: ...for 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 B...

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