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Zoom 2812, Owner'S Manual

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Chapter 3  Problems and Solutions

39

To get maximum data throughput, you can use a
computer-to-modem speed of 230,400 bps (if
your COM port can support this speed); set this
for each entry in the dialing directory.

Be aware that many files downloaded from bulle-
tin boards have already been compressed. In
general, your modem will not be able to further
compress such files.

Summary of Contents for 2812

Page 1: ...56K Owner s Manual 56Kbps V 34 Data with 14 4Kbps Fax ...

Page 2: ...ll work properly in all environments and applications Although the hardware has been tested the manufacturer makes no warranty and representation either implied or expressed with respect to the hardware and the documen tation quality performance merchantability or fitness for a particular purpose The manufacturer reserves the right to make changes to the hardware and Owner s Manual content without...

Page 3: ...WARE UNDER WINDOWS 3 1 OR 3 11 19 A Note About IRQs and Conflicts 20 SETTING UP YOUR INTERNAL FAXMODEM WITH JUMPERS 22 For MS DOS Users 22 For Windows 3 1 or 3 11 Users 23 For Windows NT Users 23 CHAPTER 2 USING THE FAXMODEM 25 USING FAX AND DATA COMMUNICATIONS SOFTWARE 25 Tips for Selecting Setup Options 25 INITIALIZATION STRINGS 26 USING AT COMMANDS 27 RETURNING TO THE FACTORY SETTINGS 29 CHAPTE...

Page 4: ... 46 FOR WINDOWS NT AND OTHER NON PNP USERS 46 PORT AND IRQ SETTINGS 47 APPENDIX E AT COMMANDS 48 APPENDIX F S REGISTERS 55 APPENDIX G RESULT CODES 59 APPENDIX H REGULATORY INFORMATION 62 FCC PART 68 TELECOMMUNICATIONS STATEMENT 62 INDUSTRY CANADA ATTACHMENT 63 CANADIAN EMISSIONS STATEMENT 64 INDEX 65 ...

Page 5: ...ing your modem to the local telephone office Your 56K Faxmodem can also perform as a top of the line V 34 data and fax modem operating at speeds up to 33 6 Kbps This manual is primarily an installation troubleshooting and reference guide Once you have successfully installed the modem in your IBM PC compatible computer software controls virtually all access to the fax and data product features Whil...

Page 6: ...ardware and software that is included with this product If you have questions that are not an swered in the Quick Start guide follow the instructions provided with your fax and data communications software to install and use those programs What You Need to Use Your Faxmodem Make sure that you have received the following items Faxmodem Phone cord Power adapter for external models only Fax and data ...

Page 7: ...y use the terms faxmodem modem and product interchangeably Occasionally you may find that other manuals use the term modem board or card to refer to the modem Commands and command examples described in this guide appear in bold type For example To reset the modem type ATZ and press Enter Occasionally we insert spaces between commands to make a command line easier to read You can type the command l...

Page 8: ...the telephone cord Plug one end of the cord provided with the modem into the PHONE LINE jack on the back of the faxmodem Plug the other end into the telephone line connection typically mounted on a wall just as you would a standard telephone You can plug a telephone into the faxmodem s other jack marked PHONE The faxmodem works with or without a telephone connected to it Connect the power adapter ...

Page 9: ... back on Turn the faxmodem on by pushing in the power button on the front as shown in the illustration below The modem performs a brief self test After the self test the front panel status lights or LEDs show the faxmodem s current state The MR light should be on which shows the faxmodem is ready for use 5 6 ...

Page 10: ...10 56K Faxmodem Owner s Manual Now you can install your fax and data communica tions software Follow the instructions provided with the enclosed software and turn to Chapter 2 ...

Page 11: ...c because the Mac uses its control line for hardware flow control CD Carrier Detect Lights when the Data Carrier Detect DCD signal from the faxmodem to the computer is on CS Clear to Send Lights when the faxmodem can accept data from the computer The light will turn off when the faxmodem is set for flow control AT command K3 and the faxmodem s data buffer is full preventing data flow from the comp...

Page 12: ...d that you set up your faxmodem with jumpers by skipping to page 22 before continuing with step 1 below You also may choose to set up this faxmodem using the software procedure beginning on page 19 but this may cause problems if you have another software configured card in your computer If you still want to use software configuration continue with step 1 below If you use Windows NT or MS DOS To co...

Page 13: ... see the illustration below Note that the faxmodem has two sections of gold con necting fingers A 16 bit slot has double connectors to match the fingers Unscrew and remove the metal cover plate on the rear of the computer that lines up with the 16 bit slot This plate is similar to the bracket on the faxmodem Put the plate and screw aside Plug the faxmodem firmly into the 16 bit slot Be sure that t...

Page 14: ...on nect a phone You can also plug a regular telephone into the jack marked PHONE The telephone shares the phone line with the fax modem and works as a normal telephone when the faxmodem is not in use Plug in your computer and turn it on If you set up your modem using jumpers all MS DOS and most Windows 3 1 and 3 11 users your modem is installed and you can move on to Chapter 2 If you are running W...

Page 15: ...Highlight this selection if it s not already highlighted and click OK Win95 displays an Install from Disk dialog box It lists A as the default drive Make sure that correct drive is designated in the dialog box A is probably correct Insert the COMit Disk in the drive and click OK Windows 95 auto detects the correct files and copies them Windows 95 continues its startup procedure Once the system is ...

Page 16: ... a major im provement over previous versions of Windows But under some circumstances Plug and Play may not resolve all in stallation problems For example if you have a lot of optional hardware in stalled in your computer you can still encounter a prob lem installing your modem Conflicts may arise when you have a sound card installed or a graphics tablet a second printer or a combination of these T...

Page 17: ...re running Windows 95 which supports Plug and Play you may have an older computer that is not completely compatible with this feature Try the steps in the next section Changing the COM settings in BIOS This procedure is a little more difficult than the previous one but with the help of your computer s documentation you should be able to clear up any remaining problems In your computer s documentat...

Page 18: ...list under Ports Select Communications Port COM2 Click the Remove button in the Device Manager window This removes the device currently assigned to COM2 When Windows 95 displays the Confirm Device Removal warning Click OK Double click Modem in the Device Manager window Double click the Faxmodem icon for your model Click the Resources tab Uncheck the Use automatic settings checkbox Scroll through t...

Page 19: ...The following instructions are for users who want to use software to configure their modem To run the SETPORT utility from your DOS prompt go to the Program Manager then go to the File menu and click Close Then follow these steps Insert the disk labeled COMit Disk 1 in your floppy drive From the DOS prompt type A or the drive letter of the correct drive and press Enter At the A prompt type cd setp...

Page 20: ...card or a sound card This happens because SETPORT is unable to tell that a particular IRQ setting is already assigned to another device if that device is not being used at the time If you get erratic behavior such as inconsistent modem performance or a piece of hardware that stops working even though it worked before read the next section A Note About IRQs and Conflicts for suggestions Write down ...

Page 21: ...BAT and SYSTEM INI files for you Examples 1 To configure the faxmodem for COM4 and IRQ10 type portwiz 2e8 10 and press Enter If this combination works then put this line in your AUTOEXEC BAT file and remember to edit the 386Enh section of your SYSTEM INI file as well Add the lines COM3Base 2e8h COM3Irq 10 You do not need to reboot in order to start using your faxmodem immediately in either DOS or ...

Page 22: ...DOS Users If you are replacing an existing modem remove the old one and check its jumpers for COM port and IRQ settings See your computer s documentation if you need help opening your computer and removing boards Write the settings down on the Important Information page in the back of your Quick Start Proceed to page 46 in Appendix D Set the jumpers using the old modem s COM port and IRQ and retur...

Page 23: ...ge 46 in Appendix D Set the jumpers using the old modem s COM port and IRQ and return to In stalling an Internal Card in Your Computer on page 12 If this is the first modem installed in your computer use the ZPORTS utility to suggest a COM port and IRQ Insert the COMit disk in your floppy drive Exit Windows From the DOS prompt type A or the drive letter of the correct drive and press Enter Type zp...

Page 24: ...emove Follow the screen prompts Check the COM port configuration in the Ports Control Panel Click Settings and Advanced Write down the port and IRQ numbers Set the jumpers on your internal faxmodem as de scribed in Appendix D using the port and IRQ num bers from step 1 or step 3 Install the faxmodem as described described in In stalling an Internal Card in Your Computer on page 12 When you ve fini...

Page 25: ...tart guide or the instructions included with your software for information about how to install and use the programs included with this product If you run into difficulty with configuration it may be helpful to read Tips for Selecting Setup Options below As explained earlier software programs are designed as a simple user friendly interface that makes it easy to use the many features your faxmodem...

Page 26: ...ling directory all entries should be set to the highest possible baud rate All communications between the computer and the modem take place at this higher speed independent of the modem to modem speed The modem auto negotiates the highest speed connection between itself and the other modem If there is a section of your software called Terminal Settings make sure that Hardware Flow Control RTS CTS ...

Page 27: ...you should use it If this modem is not listed by your software and no initialization string is suggested use the following initialization string AT F NOTE If you are familiar with AT commands and you save any settings in the modem s nonvolatile memory using the modem s W0 or W1 command remove the F from the initialization string Otherwise the contents of the initialization string overrides the sav...

Page 28: ...28 56K Faxmodem Owner s Manual ever if you need to enter AT commands you must do so from the software s terminal mode ...

Page 29: ...and local direct or dumb mode 3 Type in the AT command you need and press Enter When you finish you can return to the data communications program s standard user interface See the program s documentation if you need help Returning to the Factory Settings To return to the factory default settings for the modem in terminal mode type AT F and press Enter ...

Page 30: ...e software can t find the modem and the modem does not respond to AT commands 31 The modem takes too long to hang up at the end of a call 32 The modem fails to execute an AT command line 32 No response appears after executing a command 32 You receive an ERROR response 33 You encounter other communications problems 33 The modem speaker volume is too high or too low 33 Each character appears twice o...

Page 31: ...up If you have this problem consult your computer s documentation or call your computer s manufacturer to get instructions on how to disable the built in modem Problem You have two faxmodems installed and neither of them works Solution It is currently not possible to run two or more internal Plug and Play faxmodems in Windows 3 1 or 3 11 One internal and one external will work however Problem The ...

Page 32: ... AT at the beginning of the command line Make sure the communications software is con figured for the same COM port as your modem For example if the modem is configured for COM4 the software should be configured for COM4 Be sure your modem is not in data mode when you type the command Use the escape character sequence to switch to terminal mode The default escape sequence is to wait at least one s...

Page 33: ...mber that commands in the ini tialization string are sent to the modem each time you start your software and override the settings stored in the modem s nonvolatile memory On IBM PC compatible computers memory resident TSR programs can cause a variety of problems for some fax software programs Try starting up your computer without them Ex amples of TSRs include antivirus programs screen savers and...

Page 34: ...uring data mode Dial Troubleshooting Problem The modem does not automatically dial a call when you send a Dial command Solution Make sure the modem speaker is turned on in your software so that you can hear dialing sounds Also make sure that the phone line is plugged in Make sure that your are dialing a valid phone number including any required dial prefixes If you are using tone dialing on a line...

Page 35: ...correction and data compression Note that the first two lines in the table are likely to be the most valuable NOTE In the command strings shown in the table that follows the character after N is zero not the letter O To force the different communication speeds Type these commands and press Enter Negotiate speed and protocol default setting AT F Negotiate speed only do not use protocol AT N0 Connec...

Page 36: ...ds in your software s initialization string as it normally would Using the ATZ command overcomes this problem if you have saved all of your setup parameters in nonvolatile memory To save setup parameters in nonvolatile memory in AT terminal mode Type AT followed by the parameter set tings you choose followed by W0 or W1 and press Enter For example if you type AT C1 D2 W0 and press Enter the C1 and...

Page 37: ...he comma Note that this helps with outgoing but not incoming calls Problem Your modem does not make a connection Solution If your modem places calls but never makes a connection make sure you are dialing the right number The remote modem may be turned off Problem You receive bursts of errors occasionally but otherwise data quality is good Solution The connection may have been established on poor q...

Page 38: ...led on the screen Solution Your communications software character setup start bit data bits stop bits and parity bit does not match that of the remote system Check your settings against those used by the remote system and make sure they match Pay particular attention to the parity setting as this is the most common difference among systems You should normally use 8 data bits NO parity and 1 stop b...

Page 39: ...omputer to modem speed of 230 400 bps if your COM port can support this speed set this for each entry in the dialing directory Be aware that many files downloaded from bulle tin boards have already been compressed In general your modem will not be able to further compress such files ...

Page 40: ...pment connected to digital phone lines like ISDN or T 1 The 56K FaxModem is optimized for browsing the Internet and World Wide Web or downloading information from a central site like an ISP online service or corporate network Q Does the 56K FaxModem support a 56 Kbps standard A There is currently no approved international standard for 56 Kbps data communications over analog lines However the K56Fl...

Page 41: ...echnology A 56K provides speeds significantly higher than 33 600 bps for over 80 of local phone lines There are two ways to tell whether 56K is likely to work for you If you have a V 34 modem and regularly connect as speeds of 21 600 bps or higher 56K will likely work for you If you are 3 miles or less from the telephone switching office as are most city and suburban phone lines you will also be l...

Page 42: ...NP 10EC enhanced cellular performance H 324 compliant videophone ready Fax speeds 2400 to 14 400 send receive fax Fax Standards V 33 V 29 V 17 V 27ter and V 21 channel 2 Class 1 Group 3 fax Approvals FCC Part 15b and Part 68 Telecommunications approval Industry Canada Emissions and Telecommunications approval UL Recognized internal UL Listed external Features Plug and Play compatible and software ...

Page 43: ...gnostics Digital and analog loop back diagnostics Automatic adaptive equalization Nonvolatile RAM for storage of up to four 30 digit telephone numbers and alternate configurations Automatic gain control Inactivity timer when set hangs up if no data in programmable time from 1 to 42 minutes Call progress tone decoding busy ring dial tone Calling tone detection for both fax and data Distinctive Ring...

Page 44: ...t Frequency Tolerance 0 01 percent Receive Signal Level 9 dBm to 43 dBm Receive Frequency Tolerance 7 Hz External Configuration External standalone Jacks Two RJ 11 telephone Size 5 25 W 6 50 L Height 1 50 Electrical Specifications Power Consumption 1 5 Watts typical Power Cube 9 VDC 600 mA UL and CSA Approved Fuse 2A fuse not user replaceable Performance Specifications Transmit Signal Level Nomina...

Page 45: ...sary to move the jumpers Jumper Block Locations This illustration shows the locations of jumper blocks J1 J2 and J3 referred to in the rest of this appendix J1 J3 J2 Use jumper blocks 1 and 3 to manually set COM ports and IRQs Use jumper block 2 to select between hardware COM port assignment and software COM port assignment Windows 95 based computers which support Plug and Play can use software CO...

Page 46: ...p left corner It doesn t matter where the jumpers are at J3 J1 J3 If you want to set the port and IRQ manually move the jumper at J2 to the left and follow the instructions in Port and IRQ Settings on page 47 For Windows NT and Other Non PnP Users First follow the instructions beginning on page 22 Setting Up Your Internal Faxmodem with Jumpers Then m ake sure the J2 jumper is over the left and cen...

Page 47: ... J3 J1 J3 J1 J3 COM5 Same as COM3 IRQ2 COM6 Same as COM4 IRQ2 COM7 Same as COM3 IRQ5 J1 J3 J1 J3 J1 J3 J1 J3 COM1 Address 3F8 IRQ4 COM2 Address 2F8 IRQ3 COM3 Address 3E8 IRQ4 COM4 Address 2E8 IRQ3 COM8 Same as COM4 IRQ5 The following summary of the available interrupt settings is noted for your convenience J1 J1 J1 J1 J1 J1 J1 J1 No IRQ IRQs 2 and 9 IRQ3 IRQ4 IRQ5 IRQ10 IRQ12 IRQ15 ...

Page 48: ...med to be a zero For example ATH is the same as ATH0 A on a line by itself without a carriage return causes the modem to repeat the previous command To switch to AT command mode from data mode wait at least one second type the default escape characters and wait at least one second before entering other characters After the OK message from the modem you can enter AT commands To return to data mode ...

Page 49: ... checksum I2 Computes checksum compares with value in ROM and returns OK or ERROR I3 Returns firmware revision code I4 Returns modem identifier string I5 Returns country code I6 Returns data pump model and revision code I98 Returns modem features description I99 Returns modem features in hex bitmap L1 Low speaker volume L2 Medium speaker volume L3 Highest speaker volume M0 Speaker always off M1 Sp...

Page 50: ...NSWER X1 Sends X0 messages and CONNECT speed X2 Sends X1 messages and NO DIALTONE X3 Sends X1 messages and BUSY X4 Sends all responses Y0 Disables long space disconnect Y1 Enables long space disconnect with error correction hangs up after 1 6 second signal break without error correction sends 4 second space before hanging up Z0 Resets modem to profile 0 See W0 Z1 Resets modem to profile 1 See W1 C...

Page 51: ...1 Disables guard tone G2 Enables 1800 Hz guard tone K0 Disables flow control K3 Enables RTS CTS hardware flow control K4 Enables XON XOFF flow control K5 XON XOFF with passthrough K6 Enables both RTS CTS and XON XOFF flow control ...

Page 52: ...pback with self test V Displays the current active and stored profiles and stored numbers W0 Saves active configuration as profile 0 W1 Saves active configuration as profile 1 Y0 Modem uses profile 0 on powerup See W0 Y1 Modem uses profile 1 on powerup See W1 Zn x Stores telephone number up to 35 digits x in nonvolatile memory location n 0 3 C0 Disable data compression C1 Enable MNP5 compression C...

Page 53: ... 2 0 8 sec ON 0 4 SDR 4 Enables Type 3 sec OFF 0 8 sec SDR 5 Enables Type 1 3 ON 4 sec OFF SDR 6 Enables Type 2 3 3 0 4 sec ON 0 2 SDR 7 Enables Type 1 2 3 sec OFF 0 4 sec ON 0 2 sec OFF 0 8 sec ON 4 sec OFF R0 Disables Distinctive Ring R2 Enables Distinctive Ring Cadences are A 2 seconds on 4 seconds off B 0 8 sec ON 0 4 sec OFF 0 8 sec ON 4 sec OFF D 0 4 sec ON 0 2 sec OFF 0 4 sec ON 0 2 sec OFF...

Page 54: ...2000 50000 48000 46000 44000 42000 40000 38000 3600 34000 32000 downstream speed only 64 Bell 103 300 69 Bell 212 1200 auto mode Enables or disables automatic modulation negotiation with the remote modem 0 Disables Equivalent to N0 command 1 Enables Equivalent to N1 command min rate See Possible Rates bps above Default 300 bps max rate See Possible Rates bps above Default 33600 bps NOTE Use a comm...

Page 55: ... S7 1 255 seconds 50 Remote carrier wait time S8 0 255 seconds 2 Comma pause time S9 1 255 100 ms 6 Carrier detect response time S10 1 255 100 ms 14 Delay between carrier loss and hang up S11 50 255 1 ms 95 Tone duration in DTMF dialing S12 0 255 20 ms 50 Escape code guard time S13 RESERVED S14 BIT MAPPED OPTIONS S15 RESERVED S16 TEST MODE BIT MAPPED OPTIONS S17 RESERVED S18 0 255 seconds 0 Modem ...

Page 56: ...ls disconnects 7 Attempts MNP connection if fails establishes a Normal mode speed buffering connection S37 0 12 0 Desired DTE connection speed 0 Attempt automode connection F0 1 3 Attempt to connect at 300 bps F1 4 Reserved 5 Attempt to connect at 1200 bps F4 6 Attempt to connect at 2400 bps F5 7 Attempt to connect at 75 bps send 1200 bps receive V 23 F3 8 Attempt to connect at 4800 bps F6 9 Attem...

Page 57: ...mpression 138 Error correction and compression S48 0 7 or 128 7 V 42 negotiation action 0 No negotiation bypass detection and negotiation phases proceed with LAPM 7 Negotiation 128 No negotiation bypass detection and negotiation phases proceed with S36 fallback action S80 RESERVED S82 3 7 or 128 128 Break handling options 3 Break immediate data integrity maintained ahead of and after break 7 Break...

Page 58: ...nly 8 No framing technique in common 9 Modems could not find a common protocol 10 Bad response to feature negotiation 11 No synch information from remote modem 12 Remote modem initiated a normal disconnect 13 Remote modem does not respond after 10 message re transmissions 14 Protocol violation S95 Add numbers below for desired messages 0 Extended result codes 0 CONNECT gives computer to modem DTE ...

Page 59: ...for that X option A 1 or 3 after a check mark indicates the less explicit message that the modem generates for that option For example if the modem is set for long form messages the value of Xn is X0 and the computer to modem speed is 1200 bps the modem generates the message CONNECT and not CONNECT 1200 Short Long n Value in ATXn Command Form Form 0 1 2 3 4 0 OK 3 3 3 3 3 1 CONNECT 3 3 3 3 3 2 RIN...

Page 60: ...RIER 1200 75 3 45 CARRIER 75 1200 3 46 CARRIER 1200 3 47 CARRIER 2400 3 48 CARRIER 4800 3 49 CARRIER 7200 3 50 CARRIER 9600 3 51 CARRIER 12000 3 52 CARRIER 14400 3 54 CARRIER 19200 3 55 CARRIER 21600 3 56 CARRIER 24000 3 57 CARRIER 26400 3 58 CARRIER 28800 3 59 CONNECT 16800 31 3 3 3 3 61 CONNECT 21600 31 3 3 3 3 62 CONNECT 24000 31 3 3 3 3 63 CONNECT 26400 31 3 3 3 3 64 CONNECT 28800 31 3 3 3 3 6...

Page 61: ...157 CARRIER 46000 3 158 CARRIER 48000 3 159 CARRIER 50000 3 160 CARRIER 52000 3 161 CARRIER 54000 3 162 CARRIER 56000 3 165 CONNECT 32000 31 3 3 3 3 166 CONNECT 34000 31 3 3 3 3 167 CONNECT 36000 31 3 3 3 3 168 CONNECT 38000 31 3 3 3 3 169 CONNECT 40000 31 3 3 3 3 170 CONNECT 42000 31 3 3 3 3 171 CONNECT 44000 31 3 3 3 3 172 CONNECT 46000 31 3 3 3 3 173 CONNECT 48000 31 3 3 3 3 174 CONNECT 50000 3...

Page 62: ...o give adequate notice of the changes If the telephone company requests information on what equipment is connected to the line inform them of a The telephone number that this unit is connected to b The ringer equivalence number 0 8B internal model 0 4B external model c The USOC jack required RJ11C and d The FCC Registration Number Items b and d are indicated on the label attached to the bracket Th...

Page 63: ...n order to program this information into your fax machine refer to your faxmodem software documentation for information on enabling fax branding Industry Canada Attachment The Industry Canada label identifies certified equipment This certification means that the equipment meets certain telecommunications network protective operational and safety requirements The department does not guarantee the e...

Page 64: ...h connections themselves but should contact the appropriate electrical inspection authority or electrician as appropriate The Ringer Equivalence Number REN assigned to each terminal device helps to prevent overloading You can use any combination of devices subject only to the require ment that the sum of the RENs of all devices on any one line should not exceed 5 5 0 If too many devices are attach...

Page 65: ...sing 23 Data compression communicating without 33 DC light external model 10 Default settings 42 returning to 26 Dial string 25 30 Dial troubleshooting 31 E EC light external model 10 Echo troubleshooting 31 30 Error correction communicating without 33 ERROR response 30 Escape character sequence 29 F Factory settings returning to 26 Fax light external model 10 Fax software configuration 28 using 2...

Page 66: ...ile memory 30 O OH light external model 10 On line troubleshooting 32 37 P Plug and Play PNP 13 problems with 14 PORTWIZ utility 18 19 Problems 27 See also your communications software documentation Product Summary 38 Protocols supported 38 R RD light external model 10 Regulatory information 57 Result codes 54 S S Registers 50 SETPORT utility 17 Speaker volume 30 Specifications 40 Starting the mod...

Page 67: ...0597 27492 1997 ...

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