1. Manuals
  2. Brands
  3. AT&T Manuals
  4. Modem
  5. DataPort PCX Modem
  6. User manual

AT&T DataPort PCX Modem User Manual

Dataport pcx modems
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
You have accessed an
older version of a
Paradyne product
document.
Paradyne is no longer a
subsidiary of AT&T. Any
reference to AT&T
Paradyne is amended to
read Paradyne
Corporation.
AREA CODE CHANGE
Please note that the area
code for Paradyne
Corporation in Largo,
Florida has changed from
813 to 727.
For any Paradyne
telephone number that
appears in this manual
with an 813 area code,
dial 727 instead.

Advertisement

Table of Contents
loading

Related Manuals for AT&T DataPort PCX Modem

Summary of Contents for AT&T DataPort PCX Modem

  • Page 1 You have accessed an older version of a Paradyne product document. Paradyne is no longer a subsidiary of AT&T. Any reference to AT&T Paradyne is amended to read Paradyne Corporation. AREA CODE CHANGE Please note that the area code for Paradyne Corporation in Largo, Florida has changed from 813 to 727.
  • Page 2 3705-A2-GB90-10 Issue 2 July 1995 DataPort PCX Modem User’s Guide AT&T Paradyne Technical Support 800-237-0016 AT&T Paradyne BBS 813-532-5254...
  • Page 3 AT&T Paradyne Corporation to notify any person of such revision or changes. Mandatory Customer Information DataPort PCX Modem FCC Registration number: See label on modem Ringer Equivalence number (REN): See label on modem...
  • Page 4 Important Regulatory Information Trademarks America Online is a trademark of American Online, Inc. BitCom and BitFax are registered trademarks of Bit Software, Inc. COMit is a trademark of Tradewind Software, Inc. CompuServe is a trademark of CompuServe Inc. COMSPHERE is a registered trademark of AT&T. DataCOMM and DataFAX are trademarks of Trio Information Systems, Inc.

  • Page 5: Important Safety Instructions

    Important Regulatory Information EMI Warnings WARNING: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

  • Page 6: Government Requirements And Equipment Return

    Important Regulatory Information 5. General purpose cables are provided with this product. Special cables, which may be required by the regulatory inspection authority for the installation site, are the responsibility of the customer. 6. When installed in the final configuration, the product must comply with the applicable Safety Standards and regulatory requirements of the country in which it is installed.
  • Page 7 Important Regulatory Information 3. The Ringer Equivalence Number (REN) is used to determine the quantity of devices which may be connected to the telephone line. Excessive RENs on the telephone line may result in the devices not ringing in response to an incoming call.
  • Page 8 Important Regulatory Information 8. This modem cannot be used on public coin service provided by the telephone company. Connection to Party Line Service is subject to state tariffs. (Contact the state public utility commission, public service commission or corporation commission for information.) 9.
  • Page 9 Important Regulatory Information CAUTION: Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate. The Load Number (LN) for this equipment is shown on the label on the modem. The Load Number assigned to each terminal device denotes the percentage of the total load to be connected to a telephone loop which is used by the device to prevent overloading.

  • Page 10: Table Of Contents

    ..... . External Modem Installation External DataPort PCX Modem Package ... . .
  • Page 11 Power Problems ......Command Echo Problems ....Dial Problems .

  • Page 12: Introduction

    Introduction Congratulations on your purchase of the AT&T DataPort modem. DataPort PCX modems support high-speed data communications as well as Class 1 fax (Group III). There are two models: 3705 V.32bis External 3706 V.32bis Internal Features DataPort PCX modems have the following features: Dial line (modem to modem) rates from 14,400 bps to 75 bps CCITT V.17 (14,400 bps), V.29 (9600 bps), and V.27ter...

  • Page 13: Important Telephone Numbers

    Introduction Important Telephone Numbers AT&T Paradyne offers a dial-in Bulletin Board System (BBS) that provides information on DataPort modems, including documentation updates and software initialization strings. The telephone number for the BBS is 1-813-532-5254. Smith Micro Software, the maker of QuickLink II Fax, maintains a BBS at 1-714-362-5822.

  • Page 14: External Modem Installation

    External Modem Installation This chapter describes how to install an external DataPort PCX modem (Model 3705). External DataPort PCX Modem Package Your package contains the following: One DataPort PCX standalone external modem. One modular 6-foot RJ11 telephone cord. One 110 vac power transformer. QuickLink II Fax software diskette and user’s guide.

  • Page 15: External Dataport Pcx Modem Installation

    External Modem Installation External DataPort PCX Modem Installation Turn OFF the computer and disconnect the power cord. Be sure the modem is in a space large enough for good ventilation. Install using the figure below. CAUTION: Use only the power supply that came with your modem. Your modem needs a serial cable to connect it to your computer.

  • Page 16: Internal Modem Installation

    This User’s Guide and Warranty Card. A technical information update sheet may also be included. Required Equipment The internal version of the DataPort PCX modem can be installed only in an IBM-compatible personal computer. For proper operation, you must provide the following: An available 8-bit or 16-bit expansion slot within the PC.

  • Page 17: Internal Dataport Pcx Modem Installation

    COM port configuration is often the cause of much confusion when installing internal modems. Before attempting to install your internal DataPort PCX modem, verify which COM ports are available on your PC by running the COMTEST program provided on the QuickLink II Fax diskette.

  • Page 18: Installation Procedure

    4. Ground yourself by touching the PC’s chassis before removing the modem from its shipping bag. CAUTION: The DataPort PCX modem is shipped from the factory in an anti-ESD (electrostatic discharge) bag. This is to protect the modem from any static electricity which is very harmful to electronic equipment.
  • Page 19 Internal Modem Installation 5. Remove the modem from its shipping bag. CAUTION: Do not touch the contacts along the bottom edge or any components on the modem. Handle the modem only by its outer edges. Keep the ESD bag in case the modem must be removed or returned for service.
  • Page 20 Internal Modem Installation Table 3-1. COM Port and Interrupt Settings COMPort/IRQ Address Pos 1 Pos 2 Pos 3 Pos 4 Pos 5 Pos 6 COM1/IRQ4 3F8-3FF COM2/IRQ3 2F8-2FF COM3/IRQ4 3E8-3EF COM4/IRQ3 2E8-2EF COM3/IRQ2 3E8-3EF COM4/IRQ2 2E8-2EF COM3/IRQ5 3E8-3EF COM4/IRQ5 2E8-2EF Bold indicates factory setting.
  • Page 21 Internal Modem Installation Figure 3-2. Internal Modem Connections Issue 2 July 1995...

  • Page 22: Testing Your Modem

    DOS applications that support RPI. Some communications applications may include an error correction protocol driver called DAPI, which will conflict with WinRPI. For the DataPort PCX modem to work properly, disable DAPI when WinRPI is enabled. See the communication application users manual for instructions.

  • Page 23: Testing Your Connections

    Modem Connection Test 1. Turn your computer ON. (The internal DataPort PCX modem derives power from the PC; therefore, it automatically powers ON.) 2. If you are using the QuickLink II Fax software supplied with your modem, install and start the software.

  • Page 24: Dial-Line Connection Test

    Testing Your Modem 4. Test the modem connection by typing AT and then pressing Enter. The modem should respond with an OK. This indicates that your modem and computer are communicating correctly. Now test the connection between your modem and the telephone line by following the procedures in the Dial-Line Connection Test section.
  • Page 25 You are now logged on to the AT&T Paradyne BBS. If you wish, you can scan the BBS for documentation updates and general information about your DataPort PCX modem and other dial modem products offered by AT&T. Issue 2...

  • Page 26: About Winrpi

    Make sure that the COM port setting for your software (sometimes called Connector or Port) is set to the COM port you are using for your DataPort PCX modem. Table 4-1 shows which modem type you should select from the list your software provides, and a typical initialization command string.

  • Page 27: Using At Commands

    Using AT Commands You can change the way your modem works by using AT commands. However, your modem’s factory default configuration works for most applications; also software in your PC may automatically reconfigure your modem as required. You should find that you rarely need to enter AT commands yourself. If you do, however, please read AT Command Guidelines first.

  • Page 28: Entering At Commands Using Quicklink Ii Fax

    Responses from the modem are returned to the Terminal Window. For example, to view the configuration option settings in your DataPort PCX modem, type at&v and press Enter. The modem responds with a display of active modem settings. Issue 2...

  • Page 29: Troubleshooting

    Troubleshooting Most modem problems are a result of incorrect cabling or incorrect settings within your communications or fax software. This chapter provides a list of common problems (P:) that you may encounter after installation, followed by likely solutions (S:). Configuration Problems P: Your modem stops responding after it receives a command string from you or your communications program.

  • Page 30: Command Echo Problems

    Troubleshooting S: For an external modem, make sure the AC power transformer is plugged into an AC power source, its low-voltage lead is plugged into the modem, and the modem is turned ON. S: For an external modem, use only the power supply that came with your modem.

  • Page 31: Dial Problems

    Troubleshooting S: Make sure that your communications software has a valid character format. Valid formats consists of 8 data bits with no parity, or 7 data bits with even, odd, mark or space parity. S: Make sure that your software is set to a valid DTE rate. The DataPort PCX supports DTE data rates from 57,600 bps to 300 bps.

  • Page 32: Answer Problems

    Troubleshooting Answer Problems P: Your modem does not answer. S: Make sure the telephone cord is connected to the modem’s LINE connector. S: Attach a telephone to the wall telephone outlet and verify that it rings during incoming calls. S: Make sure that the Auto-Answer Ring Number configuration option (S0) is set to a value other than 0 (disable).

  • Page 33: Disconnect Problems

    (ATF0). This allows the modem to connect to any modem that recognizes CCITT V.32bis, V.32, V.23, V.22bis, V.22, V.21, and Bell 212A and 103J modulation schemes. The DataPort PCX modem does not support other vendors’ proprietary modulation schemes. S: Determine the originating modem’s modulation scheme,...

  • Page 34: File Transfer Problems

    Troubleshooting S: Your telephone may have Call Waiting enabled. Refer to your local telephone book for procedures to disable this feature. You may add the disable code to your dial strings. S: To test your modem hardware, perform a Local Analog Loopback test (AT&T1) and verify that data entered at the computer is echoed back to the computer.

  • Page 35: Character Format Problems

    Troubleshooting S: Set the software’s DTE rate (the speed of the modem- to-computer connection) to a lower speed. (Your software may refer to this as the Baud Rate.) The internal DataPort PCX modems use a 16550A-compatible UART; however, the external DataPort PCX modems depend on the computer’s COM port UART.

  • Page 36: Rate And Protocol Problems

    PCX modem will connect at that rate. Ask the remote modem’s owner to determine the highest rate the remote modem can support. S: The DataPort PCX modem does not support other vendors’ proprietary systems and may be forced by the other modem to connect at a lower rate.

  • Page 37: Fax Problems

    Troubleshooting S: Ensure that RPI is enabled both in the software and in the modem (AT+H n command). QuickLink II Fax automatically supports RPI. Fax Problems P: Modem cannot send or receive a fax. S: Make sure that your fax software is correctly installed. S: Check your fax software to see if there is an Answer mode or Receive Fax setting that must be enabled.

  • Page 38: Front Panel Status Lights

    Front Panel Status Lights Table A-1 describes each front panel LED on DataPort PCX external modems. Table A-1. LED Descriptions (1 of 2) Description Label Test Mode. When ON, the modem is executing a test. Carrier Detect. When ON, the modem has established a connection with a modem at the other end of the telephone line.
  • Page 39 Front Panel Status Lights Table A-1. LED Descriptions (2 of 2) Label Description Terminal Ready. When ON, the computer is attached and ready to send data to or receive data from the modem. Note that if the &D command is set for Ignore (&D0), then this LED is always ON.
  • Page 40 AT Commands and S Registers Table B-1 lists AT commands and S-registers supported by the DataPort PCX modem. This table lists standard AT commands and S-registers first (e.g., ATA and ATS0=0), followed by extended AT commands: the ampersand (&) commands (AT&C n );...
  • Page 41 AT Commands and S-Registers Table B-1. AT Command and S-Register List (2 of 21) AT Command/ S-Register Description ANSWER MODE The Answer command causes the DataPort PCX modem to go off-hook and answer an incoming call. The Answer command also puts the modem in data (Answer) mode in talk/data operation.
  • Page 42 AT Commands and S-Registers Table B-1. AT Command and S-Register List (3 of 21) AT Command/ S-Register Description (DIAL COMMAND MODIFIERS, continued) Return to Command mode. Allows AT command strings that exceed the length limit to be linked together. This is useful when using a calling card number or an international telephone number.
  • Page 43 AT Commands and S-Registers Table B-1. AT Command and S-Register List (4 of 21) AT Command/ S-Register Description DS= n DIAL STORED NUMBER Dials telephone number stored in directory location n (where n is a number, 0–3). The DataPort PCX modem supports four telephone directory entries.
  • Page 44 AT Commands and S-Registers Table B-1. AT Command and S-Register List (5 of 21) AT Command/ S-Register Description HOOK CONTROL Controls the modem’s on-hook or off-hook status. The ATH or ATH0 command causes the modem to go on-hook, disconnecting the call. It also forces the modem into Talk mode;...
  • Page 45 Disables Automode detection. Enables Automode detection. RETURN ONLINE TO DATA MODE When the DataPort PCX modem is set to AT+H0 (RPI disabled), AT0 forces the modem from online Command mode to Data mode, with or without a retrain. If result codes are enabled, the O command also displays the current VF rate.
  • Page 46 ATS0?). S0= n AUTO-ANSWER RING NUMBER Number of rings before the DataPort PCX modem answers. Accepts a ring count from 0 to 255. Factory setting is 0. If set to 0, a call must be answered manually, or by issuing the A command.
  • Page 47 Factory setting is 08, the ASCII backspace character. S6= n BLIND DIAL PAUSE TIME Sets the amount of time the DataPort PCX modem waits before dialing when Dial Tone Detect is disabled (see X n ). Accepts a pause time from 0 to 255 seconds, but values of 0 and 1 have the same effect as a value of 2.
  • Page 48 S10= n NO CARRIER DISCONNECT 255 = Disable Sets the amount of time the DataPort PCX modem will wait before disconnecting when no carrier signal is detected. Accepts a value from 0 to 254 in 0.1 second increments. S10 must be set to a value higher than the value of S9 or the modem will disconnect before it recognizes the carrier.
  • Page 49 Description S26= n RTS-TO-CTS DELAY Sets the amount of time the DataPort PCX modem waits after receiving the RTS signal before sending the CTS signal to the computer. Accepts a value from 0 to 255 in 10 millisecond increments. S26 has no effect if the modem is not in synchronous mode, or if RTS Action (&R) is set to Ignore.
  • Page 50 AT Commands and S-Registers Table B-1. AT Command and S-Register List (11 of 21) AT Command/ S-Register Description EXTENDED RESULT CODES Sets an override of the W n command option. NOTE: The following values are bit positions, not decimal S-register contents. An option is selected if its associated bit is set to 1.
  • Page 51 Enables all result codes and busy tone detect. LONG SPACE DISCONNECT Determines whether the DataPort PCX modem disconnects if a long space (more than 1.6 seconds) is detected, and sends a long space (4 seconds) when it disconnects.
  • Page 52 AT Commands and S-Registers Table B-1. AT Command and S-Register List (13 of 21) AT Command/ S-Register Description RESET AND LOAD ACTIVE Resets the modem and loads user-defined configuration options. Z, Z0 Loads the stored profile 0 configuration options into Active. Loads the stored profile 1 configuration options into Active.
  • Page 53 AT Commands and S-Registers Table B-1. AT Command and S-Register List (14 of 21) AT Command/ S-Register Description &D n DTR (DATA TERMINAL READY) ACTION Determines the handling of the Data Terminal Ready signal. &D, &D0 Interprets DTR according to the value of &Q n as follows: &Q0, &Q6: DTR is ignored (assumed on).
  • Page 54 AT Commands and S-Registers Table B-1. AT Command and S-Register List (15 of 21) AT Command/ S-Register Description &F n SELECT FACTORY DEFAULT CONFIGURATION OPTIONS &F, &F0 Loads Factory 0 configuration options into Active memory. &F1 Loads Factory 1 configuration options into Active memory.
  • Page 55 &M n ASYNC/SYNC MODE AND COMPUTER DIALER TYPE Applies to external DataPort PCX modem only. Determines the DTR operating mode. The modem treats the &M command as a subset of the &Q command. &M1, &M2, and &M3 are for serial interface operation (external modem) only.
  • Page 56 AT Commands and S-Registers Table B-1. AT Command and S-Register List (17 of 21) AT Command/ S-Register Description &Q n ASYNC/SYNC MODE AND COMPUTER DIALER TYPE Determines the DTR operating mode. &Q is an extension of the &M command. &Q1, &Q2, and &Q3 are for the serial interfaced (external) modem only.
  • Page 57 AT Commands and S-Registers Table B-1. AT Command and S-Register List (18 of 21) AT Command/ S-Register Description &T n TESTS RPI must be disabled before test commands can be used. Set AT+H0 to disable RPI. Initiates and terminates Loopback and Pattern tests. Only one test can run at a time.
  • Page 58 AT Commands and S-Registers Table B-1. AT Command and S-Register List (19 of 21) AT Command/ S-Register Description &X n TRANSMIT CLOCK SOURCE Determines the source of timing. &X, &X0 Internal. The modem generates the clock signal. &X1, &X2 Provided for compatibility only. &Y n DESIGNATE DEFAULT STORED PROFILE Determines which stored profile (0 or 1) is loaded...
  • Page 59 AT Commands and S-Registers Table B-1. AT Command and S-Register List (20 of 21) AT Command/ S-Register Description \K n BUFFER CONTROL, SEND BREAK CONTROL, BREAK FORCES ESCAPE Controls whether buffered data is discarded upon a break sequence (Buffer Control), whether a break sequence is sent before data (Send Break Control), and whether a break sequence forces the DataPort PCX modem into Command mode (Break Forces...
  • Page 60 AT Commands and S-Registers Table B-1. AT Command and S-Register List (21 of 21) AT Command/ S-Register Description LINE SIGNAL LEVEL Returns a value indicating the received line signal in dBm. NOTE: This value is not sensed at the telephone line connector.
  • Page 61 PCX modem is offline, enter AT and press the Enter key before receiving a data transfer. This is known as Autobaud, where the DataPort PCX modem uses the “A” character to gather information about the baud rate and character structure, and ensures that the modem is configured to the new speed.
  • Page 62 DTE rates higher than 19,200 bps. An internal modem in a 16-bit slot supports higher rates. Your DataPort PCX modem supports Class 1 fax. If the DataPort PCX modem is not listed in your fax software setup, use a generic Class 1 fax driver, if available.
  • Page 63 Communications and Fax Software Settings Table C-1. Software Configuration Guidelines Configuration Setting (If Available) Likely Uses Option Autobaud Off or Disable Baud Rate (DTE Rate) Maximum computer can handle; if in doubt, use 19,200 bps COM/IRQ As identified by COMTEST Data Bits/Parity/Stop 8-N-1, or as BBSs and online...
  • Page 64 Communications and Fax Software Settings Guidelines for Specific Software The AT&T Paradyne BBS (813-532-5254) has the latest updates, special settings, and initialization strings for some popular communications and fax packages. If you cannot get your software to work using the guidelines in this appendix, install QuickLink II Fax temporarily so that you can use it to check the BBS for further information.

  • Page 65: Technical Specifications

    Technical Specifications Table D-1 lists technical specifications for the DataPort PCX modem. Table D-2 lists software that supports RPI. Table D-1. DataPort PCX Technical Specifications (1 of 3) Specifications Description APPROVALS – External Modem (Model 3705) (120 Vac, 60 Hz only) FCC Part 15 Class B FCC Part 68...
  • Page 66 Technical Specifications Table D-1. DataPort PCX Technical Specifications (2 of 3) Specifications Description " AC POWER INPUT: REQUIREMENTS – 120 Vac " 10%, 60 Hz, 15W External Modem Only 230 Vac 10%, 50 Hz (not for North (Wall-Mount Transformer) America) OUTPUT: 9 Vac, 1000 mA, 9VA (Model 3705) POWER CONSUMPTION...
  • Page 67 Technical Specifications Table D-1. DataPort PCX Technical Specifications (3 of 3) Specifications Description DATA RATES Dial Line 14,400, 12,000, 9600, 7200, 4800, 2400, 1200, or 300 – 0 bps 57,600, 38,400, 19,200, 9600, 4800, 2400, 1200, 300, or 75 bps FAX RATES 14,400, 12,000, 9600, 7200, 4800, or 2400 bps...
  • Page 68 Technical Specifications Table D-2. Software That Supports RPI Product Name Minimum Version Company BitCom 6.04 (DOS) Cheyenne Software 3.03 (Windows) BitFax 4.06 (DOS) 2.12 (Windows) COMit 1.123 (DOS) Tradewind Software, Inc. 1.24 (Windows) DataCOMM 1.40 (DOS) Trio Information Systems, 3.20 (Windows) Inc.

  • Page 69: Result Codes

    Result Codes Result codes are informational messages sent from the DataPort PCX modem and displayed on your monitor. They can inform you of the status of a call (RING, NO ANSWER), whether or not a command is valid (OK, ERROR), or at what rate the modem has connected (CONNECT 14400).
  • Page 70 Result Codes DataPort PCX Result Codes Table E-1. (2 of 2) Numbers Word (ATV0) (ATV1) Description 1, 4 CONNECT 4800 Connection at 4800 bps 1, 4 CONNECT 9600 Connection at 9600 bps 1, 4 CONNECT 7200 Connection at 7200 bps 1, 4 CONNECT 12000 Connection at 12,000 bps...

  • Page 71: Limited Warranty

    Limited Warranty What is covered: Any defect in material and workmanship. For how long: Five years. What we will do: If your AT&T Paradyne product is defective and returned within 30 days of the date it was purchased, we will replace it at no charge to you.
  • Page 72 (a) register your product or (b) provide proof of purchase. This warranty is not transferrable. If you have technical difficulty with your DataPort PCX modem, please call 800-237-0016 (or 813-531-4373 if you are outside of the USA). If necessary, you will be provided product return instructions and an RMA number.
  • Page 73 Glossary Active A nonvolatile configuration area containing the most recently saved configuration options. analog signal A type of signal used to transmit data over telephone lines. Answer mode The state in which a modem is ready to receive an incoming call. This occurs when an ATA (Answer) command is issued.
  • Page 74 Glossary autobaud Modem automatically determines the asynchronous computer data rate when using AT commands. Bulletin Board System. Bell 103J An AT&T Bell standard for 300 bps data transmission. Bell 212A An AT&T Bell standard for 1200 bps data transmission. Latin for “twice.” Used to denote the second version of a standard or recommendation, as in V.32bis.
  • Page 75 Glossary Carrier Detect. A signal between the local and remote ends of a network indicating that energy exists on the transmission circuit. Associated with Pin 8 on an RS-232 interface. chassis ground Pin 1 of an RS-232 interface. Class 1 A fax modem standard.
  • Page 76 Glossary data compression The elimination of empty fields, redundancies, and gaps in order to reduce storage capacity needs and the amount of data to be transmitted. Anything that is eliminated is restored after the data is received. Data mode One of two general operating modes; the other is Command mode.
  • Page 77 Glossary Data Terminal Equipment. The equipment, such as computers and printers, that provides or creates data. Data Terminal Ready. A signal from the computer to the modem, sent via Pin 20 of an RS-232 interface, that indicates the modem is turned ON and is connected to the computer. EIA/TIA 578 An Electronic Industries Association’s standard for fax modems.
  • Page 78 Glossary fax software Software installed on a computer that allows a modem to send and receive facsimiles from another fax modem or fax machine. flow control A process in which devices stop and start the flow of data in a network to avoid losing data.
  • Page 79 Glossary long space disconnect A disconnect can occur if the modem receives an extended space from a remote modem; for example, when a remote modem is commanded to disconnect, it transmits a continuous space to the modem before disconnecting. loopback test Any test that verifies the integrity of a device by sending data from one device to another, and then checking the received data for errors.
  • Page 80 Glossary on-hook The state of a telephone or modem that is not being used. Originate mode The state in which a modem is ready to initiate a call. parity A way of checking data accuracy by counting the number of bits that have a value of one.
  • Page 81 Glossary RPI (Rockwell Protocol Interface) A technique for modem/computer communication that permits data compression and error control services to be provided by the computer. RS-232 An Electronic Industries Association’s standard defining the 25-position interface between data terminal equipment and data communications equipment.
  • Page 82 Universal Asynchronous Receiver and Transmitter. UARTs send and receive data on asynchronous serial EIA RS-232 lines. The internal DataPort PCX modem has a 16550A-compatible UART; the external DataPort PCX modem uses the UART on your computer’s COM port. upload A file transfer in which you send a file to another computer.
  • Page 83 Glossary V.17 A CCITT fax communications standard for modems operating half-duplex with synchronous data at 14,400 bps. V.21 A CCITT standard for modems operating full-duplex with asynchronous or synchronous data at 300 bps over dial telephone lines. V.22 A CCITT standard for modems operating full-duplex with asynchronous or synchronous data at 1200 bps over dial telephone lines.
  • Page 84 Glossary V.32 A CCITT standard for modems operating full-duplex with asynchronous or synchronous data at 9600 or 4800 bps over dial or leased telephone lines. V.32bis A CCITT standard for modems operating full-duplex with asynchronous or synchronous data over dial or leased telephone lines at 14,400, 12,000, 9600, 7200, or 4800 bps.
  • Page 85 Index DL (Dial Last Number), B-3 DS (Dial Stored Number), B-4 E (Command Echo), B-4 entering, 5-1 A/ (Repeat Last Command), B-1 entering with QuickLink II Fax, Answer (A), B-2 Async/Sync Mode (&M), B-16 F (Select Line Modulation), B-4 Async/Sync Mode (&Q), B-17 H (Hook Control), B-5 AT commands, B-1–B-24 I (Identification), B-5...
  • Page 86 Index Backspace Character (S5), B-8 data (character) format, 5-2, 6-8 Baud rate, displaying, B-11 data compression, types supported, D-3 Blind Dial Pause Time (S6), B-8 Data mode, 5-1 Break Forces Escape (\K), B-20 data rates, D-3 Buffer Control (\K), B-20 DCE rate, B-4 Busy Tone Detect (X), B-12 displaying, B-11...
  • Page 87 Index echo input, B-4 initialization string, 6-1 entering AT commands, 5-2 installation error (result) codes external modem, 2-2 description, 5-2 internal modem, 3-2 list of, E-1 Interrupt, settings, 3-5 Q command, B-7 IRQ (interrupt) error control, types supported, D-3 default, 3-2 Escape Character (S2), B-7 switch settings, 3-4 Escape Guard Time (S12), B-9...
  • Page 88 Index No Answer Timeout (S7), B-8 Repeat Last Command (A/), B-1 repeat last number dialed, B-3 Reset and Load (Z), B-13 Result Code Format (V), B-11 result codes description, 5-2 list of, E-1 Online command (O), B-6 result codes (Q), B-7 online Command mode, 5-1 return information, E Operating Mode (\N), B-20...
  • Page 89 Index S5 (Backspace Character), B-8 S6 (Blind Dial Pause Time), B-8 S7 (No Answer Timeout), B-8 S8 (“,” Pause Time), B-8 UART, 1-1 S9 (Carrier Detect Response UL listing, D-1 Time), B-8 S10 (No Carrier Disconnect), S11 (DTMF Tone On Timer), B-9 S12 (Escape Guard Time), B-9 S18 (Test Timeout), B-9 V.22bis and V.22 Guard Tone,...

This manual is also suitable for:

Dataport 3705Dataport 3706

Table of Contents