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CHAPTER

3

AT Commands

A

Hayes AT-compatible modem operates with
standard communications software that
enables a computer to control the C-Series

modems have a standard set of Hayes AT dialing
commands, in addition to an expanded set of commands
to control options not found in Hayes modems. The
Zypcom C-Series modems use the Cirrus Logic modem
chipset; thus, the C-Series modems will be compatible
with both Zypcom and Cirrus Logic modem drivers
found in popular communications software packages.

Software that will automatically identify your modem
(Windows 95, Netscape, etc.) will probably identify your
modem as a C-Series modem or a Cirrus Logic modem.
(The speed of the detected modem will vary with
software.) If your software says your modem is a
Zypcom C-Series or Cirrus Logic modem, accept the
modem description. Do not worry if your
communications software says it has detected a Zypcom
14.4 Kbps modem. Your software may have only
modem drivers for slower-speed versions of Zypcom or
Cirrus Logic. However, since the commands are the
same, these drivers will still operate your modem in
data and fax modes. The advanced voice features will
require the latest drivers from your communications
software manufacturer.

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Содержание Z34-PC

Страница 1: ...Zypcom Data Fax Voice Modems User s Guide Z34 SC Z34 PC Part number 18008 509D November 1997...

Страница 2: ...dors Zypcom makes no endorsement of any vendor s product nor claims responsibility for the operation and accuracy of said product ____________________________________________________________ Zypcom SE...

Страница 3: ...ttings or Plug and Play Settings 2 2 Hardware Installation Steps 2 4 Additional Installation Information 2 7 Windows 95 Modem Setup for Z34 PC and Z34 SC 2 8 Using HyperTerminal with Windows 95 2 12 I...

Страница 4: ...nds for Data Mode 3 9 Error Control and Compression Commands 3 24 Chapter 4 Troubleshooting General 4 1 Basic Communication Problems 4 2 Other Common Problems 4 6 Other Frequently Encountered Problems...

Страница 5: ...dition 18008 509C 05 97 4th Edition 18008 509D 11 97 5th Edition Zypcom welcomes your comments concerning this manual Although every effort has been made to keep it free of errors some do occasionally...

Страница 6: ...A repair order RO number must accompany all returned equipment see Service Information later in this section Zypcom will repair and return the equipment to the Buyer and will prepay transportation cha...

Страница 7: ...0 days after the alleged breach THIS STATEMENT OF WARRANTY AND LIMITATION OF LIABILITY IS A COMPLETE AND EXCLUSIVE STATEMENT OF ALL WARRANTY AND LIABILITY REPRESENTATIONS OF ZYPCOM INC It may not be v...

Страница 8: ...in the original box or similar protective shipping container and send it prepaid to Repair Department Reference RO Number _______ Zypcom Inc 2301 Industrial Parkway West Bldg 7 Hayward CA 94545 Pleas...

Страница 9: ...quipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is...

Страница 10: ...number of devices that may be connected to your telephone line and that will still ring when your telephone number is called In most areas but not all the sum of the RENs of all the devices you may c...

Страница 11: ...the equipment is not malfunctioning This equipment may not be used on coin service provided by the telephone company Connection to party lines is subject to state tariffs Statement of Fax Branding The...

Страница 12: ...associated with a single line individual service may be extended by means of a telephone extension cord Compliance with the above conditions may not prevent degradation of service in certain situation...

Страница 13: ...number are listed on the modem label The Canadian DOC connector codes supported are CA11A CA41A and CA45A For internal modems on which the agency information label cannot be seen when the modem is in...

Страница 14: ...xiv Z...

Страница 15: ...56Kbps data modem a fax machine a professional voice mail system and a full duplex speakerphone In addition these C Series modems support V 80 the videophone standard that is required by H 324 videoph...

Страница 16: ...Answer machine and voice mail q Full duplex speakerphone q Audio recording and playback of messages q Flash memory for modem upgrades q V 80 compatible for videophone software q Caller ID support q N...

Страница 17: ...or 4 q Free IRQ for the COM port 3 4 5 7 10 11 or 12 q Speaker or earphone set optional Modes of Operation The Zypcom C Series modems incorporate the CL MD3452 DSP chipset from Cirrus Logic The Cirru...

Страница 18: ...AT commands for data are listed in Table 3 1 in Chapter 3 Error Control Modes In data mode the modem supports error correction V 42 MNP 2 MNP 3 and MNP 4 and data compression V 42bis and MNP 5 Error c...

Страница 19: ...s Guide included with your modem or use the software s Help functions Voice Mode The C Series modems support voice mode operation using IS 101 AT type voice commands The modem s voice mode requires IS...

Страница 20: ...rvice that allows the called party to know the caller s telephone number before the call is answered The information transmitted to the called party via Caller ID includes the call date the call time...

Страница 21: ...face The Z34 SC modem has an internal high quality audio speaker and does not require external speakers The Z34 PC modem supports a phono jack connection for an external speaker The Z34 PC s speaker j...

Страница 22: ...support V 80 for videophone calls In addition to the C Series V 80 compatible modem you must have a videophone software package a camera and a video capture card For videophone operation refer to you...

Страница 23: ...s you can see from our User s Guide both the Z34 SC and Z34 PC are sophisticated modems with advanced fax and voice features which will serve you well for years to come Zypcom thanks you our valued cu...

Страница 24: ...1 10 1...

Страница 25: ...d Z34 PC installed on your PC and running on an asynchronous data dial up communication link You ll learn about the communication software you might need how to connect the Z34 SC and Z34 PC to your c...

Страница 26: ...stem has a free COM port and Interrupt IRQ perhaps because you are replacing a lower speed modem use those settings on your Z34 PC If you do not know of an available COM port and IRQ then try Plug and...

Страница 27: ...r modem for Plug and Play Windows 95 will assign the COM port and IRQ However it is recommended that you select your own settings rather than having the computer do it for you To place the jumpers ref...

Страница 28: ...r Remove the existing silver bracket behind the slot where you want to install the modem 5 Before you remove the modem from its static resistant bag be sure to discharge any static electricity on your...

Страница 29: ...in the installation 8 Connect the modem telephone cable to the outside telephone line Plug one end of the telephone cable included with the modem into the LINE jack on the modem Plug the other end int...

Страница 30: ...4 SC Modem Hardware Installation 1 Turn your computer s power off 2 Connect the serial modem cable to the modem and tighten the retaining screws 3 Connect the serial modem cable to the COM port you ha...

Страница 31: ...x operation once you change the modem type in your software If your software does not support Zypcom s Z34 PC or Z34 SC try another Zypcom model or a Cirrus Logic model If voice capabilities are impor...

Страница 32: ...Cirrus Logic chipset based modem before on your PC you will need to remove it first before installing the new driver files Please refer to the section entitled Removing Old Modem Drivers which appear...

Страница 33: ...yperTerminal to Test Your Modem The very latest versions of Windows 95 INF files mdmcir inf and serwvcir inf can be obtained from Zypcom s BBS by calling 510 783 2580 Using Hyper Terminal to Test Your...

Страница 34: ...en click on Next NOTE You will need your Windows 95 CD for this stage so that the necessary files get updated The win95_11 cab file is in the win95 sub directory Windows 95 will ask for some basic inf...

Страница 35: ...lling the new 56 000 bps drivers If you are upgrading from an earlier version of the 56 000 bps Windows driver you must remove the old 56 000 bps drivers first Unfortunately removing modems from the c...

Страница 36: ...to the screen Type ATZ CR Sometimes you may not see anything Wait a second or two and type AT F CR followed by AT CR If you get an OK message then the installation works properly If you get an error...

Страница 37: ...can try a different COM port Many computer systems come with either one serial port and a modem or two serial ports that use COM port 1 and COM port 2 therefore it is best to try COM port 3 and COM p...

Страница 38: ...ly pressed during installation or the modem type name was removed previously What To Do Try adding the board again If this does not work try removing the board and adding a different modem If this wor...

Страница 39: ...tions to access the Computer Properties screen Systems Properties 1 Press the Windows 95 Start icon then press the Settings icon Choose the Control Panel 2 Double click the System icon on the Control...

Страница 40: ...ternately access the Modem icon from the Control Panel select the modem name and press the Remove button Computer Properties 1 From the System Properties window double click the Computer icon This ope...

Страница 41: ...perVoice to perform these functions please refer to the SuperVoice User s Guide included in your package The following sections highlight portions of some procedures Installing SuperVoice Insert Diske...

Страница 42: ...Reviewing Your Phone Messages In the SuperVoice Manager box click on the Voice Msg icon or alternatively in the Speaker Phone box click on Voice The Incoming Voice Manager box will appear Click on Pl...

Страница 43: ...lume in or volume out above the 75 percent mark otherwise frequent speakerphone feedback will occur which reduces usability of this feature Using Other Communication Software With Your Modem Communica...

Страница 44: ...em 2 Set the Data Rate to 115 2 or 57 6 Kbps Do not select 56 000 28 800 or 14 400 bps as serial port rates 3 Set the Flow Control to Hardware or RTS CTS 4 Turn Auto Baud off or Lock Baud Rate on 5 Se...

Страница 45: ...hat will automatically identify your modem Windows 95 Netscape etc will probably identify your modem as a C Series modem or a Cirrus Logic modem The speed of the detected modem will vary with software...

Страница 46: ...lephone number go off hook to answer an incoming fax receive an incoming voice mail message and perform other actions Online Data Mode When the modem connects to a remote modem it acquires carrier fro...

Страница 47: ...line data mode use the ATO ENTER command or the ATH ENTER command to disconnect If you enter an incorrect AT command while in this mode the modem automatically returns to online data mode Fax Mode The...

Страница 48: ...ns over plain old telephone lines Basics of the AT Command Set An AT command consists of the AT prefix followed by a string of command characters These command characters which can be upper or lower c...

Страница 49: ...ssages like OK or ERROR are verbose You can select either a verbose or a character message to be sent by the modem ATV0 specifies character response messages ATV1 specifies verbose response messages A...

Страница 50: ...ory to work with most applications Default values for each command are marked with an asterisk AT command strings can contain multiple commands in the same string These commands are placed after the A...

Страница 51: ...COMMAND SET DATA GROUP COMMAND DESCRIPTION PAGE A Re execute last command 3 9 A Manual answer 3 9 B CCITT Bell compatibility 3 9 D Dial command 3 10 E Command character echo 3 10 H Switch hook control...

Страница 52: ...3 21 G Rate renegotiation 3 21 C Generate data calling tone 3 22 MS Modulation control 3 22 A Auto reliable abort character 3 24 C MNP control 3 24 A MNP block size 3 25 C Buffer control 3 25 G Modem...

Страница 53: ...Selects the frequency transmitted by the modem COMMAND DESCRIPTION B0 Use CCITT V 22 at 1200 bps and CCITT V 21at 300 bps B1 Use Bell 212A at 1200 bps and Bell 103 at 300 bps B2 Use CCITT V 23 only Th...

Страница 54: ...er S6 Switch hook flash 0 75 seconds duration Waits for 5 seconds of silence before continuing Returns to command mode after dialing S n Dials one of the four stored telephone numbers each with a maxi...

Страница 55: ...us Shows information about the read only memory ROM the firmware revision level and the revision levels of the data pump COMMAND DESCRIPTION I0 Reports product code I1 Reports modem chip firmware vers...

Страница 56: ...off M1 Speaker on until modem detects the carrier signal M2 Speaker is always on when modem is off hook M3 Speaker off during dialing on until modem carrier present Nn Negotiate Handshake Selects whe...

Страница 57: ...ode O1 Retrains equalizer and then returns to data mode Qn Result Codes Defines whether or not the modem will issue result codes to the DTE during normal operation These codes can cause confusion to s...

Страница 58: ...s W4 Reports protocol and line speed Xn Result Code Defines the type of result codes to be returned to the DTE COMMAND DESCRIPTION X0 Enables result codes 0 4 disables detection of busy and dial tone...

Страница 59: ...Y CONNECT 7200 24 N Y Y Y Y CONNECT 9600 12 N Y Y Y Y CONNECT 12000 25 N Y Y Y Y CONNECT 14400 13 N Y Y Y Y CONNECT 16800 59 N Y Y Y Y CONNECT 19200 14 N Y Y Y Y CONNECT 24000 62 N Y Y Y Y CONNECT 264...

Страница 60: ...ECT 41333 35 N Y Y Y Y CONNECT 42666 36 N Y Y Y Y CONNECT 44000 37 N Y Y Y Y CONNECT 45333 38 N Y Y Y Y CONNECT 46666 39 N Y Y Y Y CONNECT 48000 42 N Y Y Y Y CONNECT 49333 43 N Y Y Y Y CONNECT 50666 5...

Страница 61: ...a continuous break signal In addition when the modem receives a break signal from the DTE it transmits 4 seconds of break signal to the remote modem before hanging up Zn Recall Stored Profile Recalls...

Страница 62: ...TR D1 Modem switches to command mode when DTR switches from on to off D2 When DTR switches on to off the modem goes on hook and disables auto answer mode when DTR switches off to on auto answer is ena...

Страница 63: ...m the DTE Bidirectional hardware flow control uses RTS CTS to stop and start data from the modem COMMAND DESCRIPTION K0 Disables flow control K3 Bidirectional hardware flow control K4 Xon Xoff softwar...

Страница 64: ...uring handshaking and when carrier is lost Tn Diagnostic Tests Used to initiate and terminate loopback tests for testing modem to modem and DTE to modem data communication integrity COMMAND DESCRIPTIO...

Страница 65: ...s Causes the modem to display its current configuration as well as other stored profiles and telephone numbers COMMAND DESCRIPTION V0 View active profile and stored profile 0 V1 View active profile an...

Страница 66: ...OMMAND DESCRIPTION Zn x Stores telephone number x to nonvolatile memory location n where n 0 through 3 Zn Displays the telephone number stored in memory location n En Auto retrain Control Controls the...

Страница 67: ...ion Control The MS command controls the modulation used on a connection It also controls whether or not automode is used as well as the maximum and minimum carrier data rates line speed on the connect...

Страница 68: ...21600 19200 16800 14400 12000 9600 7200 4800 2400 1200 and 300 A setting of 0 is the same as the lowest setting for any given modulation method The maximum line rate parameter specifies the highest da...

Страница 69: ...V 42bis V 42 error correction uses LAPM as the primary error control protocol and uses MNP2 4 as an alternative V 42bis data compression requires V 42 in order to operate MNP5 requires MNP2 4 in order...

Страница 70: ...smaller frame size may improve throughput on high impairment noisy telephone lines COMMAND DESCRIPTION A0 64 characters uses for cellular connections Al 128 characters A2 192 characters A3 256 charact...

Страница 71: ...connection speed which allows much greater throughput when using error correction and data compression COMMAND DESCRIPTION J0 Disables speed conversion J1 Enables speed conversion Nn Data Mode Control...

Страница 72: ...pression examples V42bis MNP5 V42 MNP2 4 or BUFFER mode N3 H3 C1 V42bis V42 MNP2 4 or hang up N4 C0 H3 J1 V42bis or hang up N4 H3 J0 V42 or hang up N4 H0 J0 MNP5 MNP2 4 or hang up N2 C1 MNP2 4 or hang...

Страница 73: ...isables flow control Q1 XON XOFF software flow control Q2 Unidirectional hardware flow control Q3 Bidirectional hardware flow control Tnn Inactivity timer Is measured in minutes and has a range of fro...

Страница 74: ...OMMAND DESCRIPTION X0 Processes flow control characters X1 Processes flow control characters and passes them through Jn V 42 Detect Phase In V 42 modes N3 N4 specifies whether the modem detects V 42 M...

Страница 75: ...status registers commonly referred to as S registers which can be used to control specific modem functions S registers are memory locations that hold values for various parameters For example S regis...

Страница 76: ...n be read using the ATSn command Each S register that is storable will have a default value and a range that can be set Auto Answer S0 0 255 Register S0 controls the auto answer option S0 0 disables a...

Страница 77: ...ponse messages Default 13 ASCII CR or ENTER on a keyboard Line Feed Character S4 0 127 Register S4 defines the ASCII character that follows the carriage return when the modem is set to give verbose wo...

Страница 78: ...me for carrier or wait time for silence If the at sign is used in the dialing command string register S7 also controls the wait time for silence otherwise after dialing a call the modem must receive a...

Страница 79: ...for the time specified by the S10 register the modem disconnects the call and responds with a NO CARRIER message to the DTE Each number between 1 and 255 represents the number of tenths of a second t...

Страница 80: ...1 second S13 Reserved N A S14 Bit mapped N A S15 Reserved N A S16 Bit mapped N A S17 Reserved N A Test Duration S18 0 255 Register S18 sets the duration of the modem s diagnostic tests When S18 is se...

Страница 81: ...Bit mapped N A S22 Bit mapped N A S23 Bit mapped N A S24 Reserved N A DTR Detect Time S25 0 255 Register S25 determines the amount of time the modem will wait before detecting a change in the DTR sign...

Страница 82: ...tes S31 Bit mapped N A Max Line Speed S37 0 19 Register selects maximum line speed to be attempted Note that the MS command also controls this capability If you want to limit the maximum data rate at...

Страница 83: ...21 x2 33 333 22 x2 37 333 23 x2 41 333 24 x2 42 666 25 x2 44 000 26 x2 45 333 27 x2 46 666 28 x2 48 000 29 x2 49 333 30 x2 50 666 31 x2 52 000 32 x2 53 333 33 x2 54 666 34 x2 56 000 35 x2 57 333 NOTE...

Страница 84: ...3 40 3...

Страница 85: ...ata and parity 7 odd 7 even or 8 none q Terminal speed 115200 or 57600 or 38400 q Correct COM port is selected Z34 SC DTR LED on q Local echo setting on PC terminal is set to off q Hardware flow contr...

Страница 86: ...bleshoot communication problems Install the SuperVoice software on your computer If you do not have a Windows PC use another compatible communications package that has a terminal emulation mode TTY or...

Страница 87: ...cable would require pins 1 through 8 20 and 22 and would be a straight through cable where pin 1 goes to pin 1 on each end 3 Check the connectors at both ends of the cable Make sure they are firmly at...

Страница 88: ...er character The total of the data bits parity bit and the start and stop bits must equal 10 The modem automatically determines speed and parity for 10 bit characters The most common settings are q 8N...

Страница 89: ...the modem s default setting CXR is set normal Some software packages need CXR to be on In AT autodialing you can control this option using the AT Cn command 2 Check the setting for DSR The default set...

Страница 90: ...u have contains RTS pin 4 and that the RTS LED is on Displays Double Characters If the DTE screen doubles every character you type then the terminal and modem are both echoing characters Try to disabl...

Страница 91: ...al characters on your screen Force error control using the AT N4 ENTER command then redial the telephone number By forcing error control N4 the modem will hang up the connection if it doesn t successf...

Страница 92: ...equent delays can be bothersome and require some effort to resolve However with patience and a systematic approach to trouble shooting you can determine if the modem is the source of your delays or no...

Страница 93: ...connections for 15 30 minutes or so in order to understand what is occurring relative to retraining If you decide there is a problem you have four basic solutions 1 Call another computer to determine...

Страница 94: ...nnection MS command 2 Have the phone company provide you with a higher quality telephone line 3 Use a Zypcom modem on the answer side as well Step Four Error Control Retransmissions A delay due to sta...

Страница 95: ...our Zypcom modem at a lower maximum line speed to make it more immune to line drops Modem Fails to Handshake The occasional failure to handshake is normally due to a telephone network problem A freque...

Страница 96: ...ing and make multiple calls in order to ensure that the maximum line speed you have selected will consistently give you a reliable connection Modem Does Not Answer Incoming Calls If the modem does not...

Страница 97: ...ring Call Zypcom technical support Modem Answers Incoming Calls If the modem has the AA LED on and DTR LED on it will answer all incoming calls To disable this feature set S Register 0 to 0 and write...

Страница 98: ...a from either modem or from only one modem it is probably because the modem has RTS CTS flow control K3 set but the modem cable you are using does not have it installed To verify this first set K0 no...

Страница 99: ...e other end could be busy or not answering Make sure the number you dialed is correct and test the number by dialing it on your telephone not through your modem If you are using the modem internationa...

Страница 100: ...lected Class 1 as your fax class Make sure that you do not have another communications program open Be sure you selected the fax printer in your word processing program Fax Not Found Re install or re...

Страница 101: ...e your problem please call Zypcom technical support for assistance Our number is 510 783 2501 our hours are 8 00am to 5 00pm PST Monday through Friday Our BBS number is 510 783 2580 Our E mail address...

Страница 102: ...4 18 4...

Страница 103: ...llel Bus and Plug and Play Interface Data Communication Standards Modulation Vx2 V 34 V 34 V 32bis V 32 V 23 V 22bis V 22 V 21 and Bell 12A 103 Data Rates 57 3K 56K 54 6K 53 3K 52K 50 6K 49 3K 48K 46...

Страница 104: ...P Class 5 Commands AT AT Voice Data AT Hayes Compatible Fax EIA TIA 578 Fax Class 1 Voice EIA TIA IS 101 compatible Video V 80 compatible Fax Standards Modulation ITU T V 17 V 29 V 27 ter and V 21 cha...

Страница 105: ...4800 Hz Voice Compression 3 bit 4 bit ADPCM 8 bit 16 bit Linear PCM CL1 8 bit Cirrus A law Functional Caller ID Formatted and unformatted messages Automatic Sleep Power Down and Wake Up Physical Elect...

Страница 106: ...One RJ11 jack for a telephone line connection Speaker Interface Minimum load 8 Ohm maximum load 100 Ohm Humidity 20 90 non condensing Temperature 0 to 70 C 32 to 158 F Transmit Level 10 dBm 1 dB dial...

Страница 107: ...e with EIA TIA IS 101 voice command set Supported IS 101 commands and descriptions are listed below FCLASS n Mode selection Default is 0 Range is 0 1 8 n 0 1 8 n 0 Data mode n 1 Class 1 fax mode n 8 V...

Страница 108: ...ctive ring selection can be disabled by VEM command This command has two parameters which are separated by a comma Intervals are in 1 seconds Default is 0 0 and the range is 0 255 0 255 VEM m Event re...

Страница 109: ...ing is 0 disables and the range is 0 255 seconds VLS n Relay playback control This command controls the relays that operate voice playback record for transmit and recieve Default is 0 DCE on hook and...

Страница 110: ...condition 14 Handset or headset connected to DCE DCE on hook LP connected to telco 15 Handset or headset connected to telco DCE connected to telco 16 Handset or headset connected to telco with MIC mut...

Страница 111: ...a call in voice mode If timer times out an ERROR message is sent If ringback is detected before timeout an OK is sent Default is 10 seconds Range is 0 255 VRX Record mode This command causes the modem...

Страница 112: ...adaptive differential PCM ADPCM 140 CL 1 Cirrus A law 141 AD 3 3bit ADPCM VSR COMMAND DESCRIPTION 4800 4800 samples per second 7200 7200 samples per second 8000 8000 samples per second 9600 9600 samp...

Страница 113: ...command sets the DTMF duration Default is 100 Each increment is 01 seconds therefore default of 100 is 1 second The range is 5 255 VTS m DTMF and tone generation This command causes the modem to gener...

Страница 114: ...Appendix B 8 B...

Страница 115: ...unication software and a Zypcom C Series modem to communicate with group 3 fax machines The fax identity and test commands are listed below Fax Identity Commands These commands are used by fax softwar...

Страница 116: ...setting for this command is 3 FRM n Selects receive data modulation Modulation standards followed by ST represent short training Settings are 24 V 27ter 2400 48 V 27ter 4800 72 V 29 7200 73 V 17 7200...

Страница 117: ...aining Settings are 24 V 27ter 2400 48 V 27ter 4800 72 V 29 7200 73 V 17 7200 74 V 17ST 7200 96 V 29 9600 97 V 17 9600 98 V 17ST 9600 121 V 17 12200 122 V 17ST 12200 145 V 17 14400 and 146 V 17ST 1440...

Страница 118: ...Appendix C PB C...

Страница 119: ...he telephone network and reaches the other modem The remote modem translates the analog signal received back to data demodulation and sends to the receiving end computer Fax Modem Normal modem can be...

Страница 120: ...for asynchronous data receiving and transmitting The normal UART device used in PC is NS16450 For high speed serial data receiving 38400 bps and up the PC may not be fast enough and data may get lost...

Страница 121: ...up defaults INIT Strings An initialization string is a series of specific commands that prepares a modem to operate with communications software Consult your communication software manual and AT comm...

Страница 122: ...0bps DTE to modem speeds AT commands 300 115200bps Fax mode DTE to modem speed FCLASS commands 19 200bps Voice mode DTE to modem speed FCLASS commands 19 200 115 200bps MNP Microcom Network Protocol i...

Страница 123: ...nds for Request To Send a handshake line in which the computer tells the modem it can accept new data CTS stands for Clear To Send which allows the modem to tell the computer that it can accept new da...

Страница 124: ...off hook to dial or answer and it remains off hook while you are connected On hook Hangs up a telephone receiver You are not connected to the Telephone Central Office when the modem is on hook DTMF Du...

Страница 125: ...new INF files mdmcir inf and serwvcir inf into the floppy drive The latest versions are on the BBS at Zypcom 510 783 2580 2 Click on START SETTINGS CONTROL PANEL MODEMS REMOVE to remove any modems lis...

Страница 126: ...ences the Zypcom or Cirrus Logic INF file If it does remove both files By removing these files Windows 95 will look at everything on the diskette without taking any shortcuts 5 Now you can install the...

Страница 127: ...s the Properties button press the Connection tab press the Advanced button and check the box for Record Log File This will set up the system so that whenever you use the modem with Microsoft Phone a l...

Страница 128: ...Appendix E PB E...

Страница 129: ...ctions 3 In your communication software set the communication parameters to the following q 115 2 Kbps data connection modem to DTE q Parity none q Data bits 8 q Stop bits 1 q RTS CTS flow control 4 T...

Страница 130: ...continue the download procedure press the Page Up key 9 From the menu of download protocols choose R for the RAW ASCII downloading protocol 10 At the prompt Please enter filename enter the path and na...

Страница 131: ...or modem until after you see the END message If this happens you must re install downloadable code with the burning in procedure in Section II above 12 To see the version of firmware you ve downloade...

Страница 132: ...Appendix F 4 F...

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