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Airlinkplus AML001 User Manual

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  • Page 1 PCI Modem Card User’s Manual...
  • Page 2 Copyright 2002 All rights reserved. No part of this publication may be reproduced in any form by any means without the prior written permission. Other trademarks or brand names mentioned herein are trademarks or registered trademarks of their respective companies. April 2002, Rev01...

  • Page 3: Table Of Contents

    Contents CHAPTER 1 INTRODUCTION ... 1 1.1 Features... 1 1.2 System Requirements... 2 1.3 Package Contents... 2 CHAPTER 2 HARDWARE INSTALLATION... 3 2.1 Installing the Card ... 3 2.2 Connection ... 3 CHAPTER 3 SOFTWARE INSTALLATION... 5 3.1 For Windows 95 ... 5 3.2 For Windows 98 ...
  • Page 4 PCI Modem Card User's Manual A.2 Result Codes... 64 A.3 S-Registers ... 66 APPENDIX B SPECIFICATIONS ... 69 APPENDIX C GLOSSARY... 75 APPENDIX D ASCII CODE TABLE ... 79...

  • Page 5: Chapter 1 Introduction

    Chapter 1 Introduction Congratulations on the purchase of your new 56K modem! This handbook will help you through the installation procedure. You also can use the commands in this book to customize the performance of your modem, although this is not required for normal operation. 1.1 Features Two-chip soft modem solution with an integrated 5 V tolerant PCI interface...

  • Page 6: System Requirements

    PCI Modem Card User's Manual * Due to FCC limitations, speeds of 53 kbits/s are the maximum permissible transmit power levels during download transmission. Actual data speeds will vary depending on the line conditions. 1.2 System Requirements Pentium Windows 95 One available PCI slot 32 MB RAM or more CD-ROM drive...

  • Page 7: Chapter 2 Hardware Installation

    Chapter 2 Hardware Installation 2.1 Installing the Card Step1 With the power to your computer disconnected, remove PC casing. Note: Some PCI compliant motherboards supply power to the slots even when the PC is turned off. To prevent damage to your PC or PCI modem card, always unplug the power cord when installing or removing PCI modem cards.

  • Page 8: Chapter 3 Software Installation

    Chapter 3 Software Installation 3.1 For Windows 95 Start Windows 95 and insert the provided CD into your CD-ROM drive to start driver installation. Step 1 The Update Device Driver Wizard screen will appear detecting a new device and request for the driver. Click Next. Step 2 Windows will be unable to locate the driver;...
  • Page 9 PCI Modem Card User's Manual Step 3 Click Browse to specify the path to X:\Driver\Win9x where X is the CD-ROM drive letter and click OK. Step 4 Windows will find the location of the driver; click Finish. Step 5 When prompted to insert disk, click OK. Step 6 In Copying Files window, click Browse to specify the path to X:\Driver\Win9x where X is the CD-ROM drive letter and click...

  • Page 10: For Windows 98

    3.2 For Windows 98 Start Windows 98 and insert the provided CD into your CD-ROM drive to start driver installation. Step 1 The Add New Hardware Wizard screen will appear detecting a new device and request for the driver. Click Next. Step 2 Select Search for the best driver for you device and click Next.
  • Page 11 PCI Modem Card User's Manual Step 4 Windows will find the location of the driver; click Next. Step 5 Click Finish. Step 6 Windows will continue to detect the voice device. Click Next and then repeat steps 2-5 to complete the installation. When you are done with driver installation, you will need to specify the country where you locate upon different telecommunication regulations/ laws.

  • Page 12: For Windows Me

    3.3 For Windows Me Start Windows Me and insert the provided CD into your CD-ROM drive to start driver installation. Step 1 Your computer detects new hardware and displays the Add New Hardware Wizard window. Select the Specify the location of the driver option and click Next.

  • Page 13: For Windows Nt4.0

    PCI Modem Card User's Manual Step 4 When the following window appears, click Finish. Step 5 Windows will continue to detect another device. Repeat Steps 1-4. Step 6 When New Hardware Found windows appear, wait for Windows to complete the installation. When you are done with driver installation, you will need to specify the country where you locate upon different telecommunication regulations/ laws.
  • Page 14 Step 2 When confirm message appears, click OK. Step 3 When prompted to restart your computer, click OK. When you are done with driver installation, you will need to specify the country where you locate upon different telecommunication regulations/laws. Please proceed to “Chapter 4 Configuring Countries” on page 17 for instructions.

  • Page 15: For Windows 2000

    PCI Modem Card User's Manual 3.5 For Windows 2000 Start Windows 2000 and insert the provided CD into your CD-ROM drive to start driver installation. Step 1 The Found New Hardware Wizard screen will appear detecting a new device and request for the driver. Click Next. Step 2 Select Search for a suitable driver for my device and click Next.
  • Page 16 Step 4 Click Browse to locate the path of the driver: x:\Driver\W2K (where x: represents your CD-ROM drive) and click OK. Step 5 Windows will find the location of the driver; click Next. Step 6 If Digital Signature Not Found window appears, click Yes to continue.

  • Page 17: For Windows Xp

    PCI Modem Card User's Manual 3.6 For Windows XP Start Windows XP and insert the provided CD into your CD-ROM drive to start driver installation. Step 1 When Found New Hardware Wizard screen appears, select Install from a list or specific location (Advanced) and click Next. Step 2 With Search for the best driver in these locations selected, select ONLY Include this location in the search.
  • Page 18 Step 4 Click Finish. When Found New Hardware screen appears, wait for completing the installation. When you are done with driver installation, you will need to specify the country where you locate upon different telecommunication regulations/ laws. Please proceed to “Chapter 4 Configuring Countries” on page 17 for instructions.

  • Page 19: Chapter 4 Configuring Countries

    Close or OK. Step 1 Click Start menu, point to Settings and click Control Panel. On the Control Panel, double-click the Modems icon. Step 2 In Modems Properties window, highlight Agere Systems PCI Soft Modem and click Dialing Properties.

  • Page 20: For Windows Nt4.0

    Apply (for Windows 98/Me only) and then OK. Windows 98/Me Step 4 You will return to the Modems Properties window. Click OK to return to Control Panel. 4.2 For Windows NT4.0 Step 1 Click Start menu, point to Settings and click Control Panel.
  • Page 21 Step 2 In Modems Properties window, highlight Agere Systems PCI Soft Modem and click Dialing Properties. Step 3 From the drop-down list of I am in this country/region, select a country where your modem is to be used and click Apply and then...

  • Page 22: For Windows 2000/Xp

    PCI Modem Card User's Manual 4.3 For Windows 2000/XP Note: The configuration steps are the same in Windows 2000 and Windows XP. The graphics here assume a Windows 2000 environment. Step 1 Click Start menu, point to Settings and click on Control Panel. On the Control Panel, double-click the Phone and Modem Options icon.

  • Page 23: Chapter 5 Verify Modem Installation

    Windows can communicate with your modem. 5.1 For Windows 95/98/Me Step 1 Click Start menu, point to Settings and then click Control Panel. Double-click the Modems icon. Step 2 Click the Diagnostics tab.
  • Page 24 PCI Modem Card User's Manual Step 3 Highlight the COM port used by your modem and then click More Info…. Step 4 Wait for communication with your modem. Step 5 If your modem is properly installed, the command response (something like AT…) should appear on the screen. Congratulations! You have successfully installed the modem hardware and its driver.

  • Page 25: For Windows 2000/Xp

    Click Start menu, point to Settings and then click Control Panel. Double-click the Phone and Modem Options icon. Step 2 In the Phone And Modem Options window, click the Modems tab. Highlight Agere Systems PCI Soft Modem and then click Properties.
  • Page 26 PCI Modem Card User's Manual Step 4 Wait for communication with your modem. Step 5 If your modem is properly installed, the command response (something like AT…) should appear on the screen. Congratulations! You have successfully installed the modem hardware and its driver. * According to your model, the command responses may differ from shown above.

  • Page 27: Chapter 6 Uninstalling The Drivers

    Chapter 6 Uninstalling the Drivers This chapter describes how to uninstall the modem software from your system. If you are going to uninstall the modem device permanently, follow these steps: Uninstall the software first as described in this chapter. Shut down your PC. Power off the PC and unplug all the peripherals. Remove the cover and pull the modem card out of its PCI slot.

  • Page 28: For Windows Nt4.0

    PCI Modem Card User's Manual Step 3 Click Yes to remove the components. Step 4 When prompted to restart your computer, select Yes or No as required. 6.2 For Windows NT4.0 Step 1 Click Start, point to Settings and click on Control Panel. On the Control Panel, double-click the Add/Remove Programs icon.

  • Page 29: For Windows 2000/Xp

    Step 4 When prompted to restart your computer, select Yes or No as required. 6.3 For Windows 2000/XP Note: The removing steps are the same in Windows 2000 and Windows XP. The graphics here assume a Windows 2000 environment. Step 1 Click the Start menu, point to Settings and then click Control Panel.

  • Page 30: Appendix A At Commands

    Appendix A AT Commands AT Command Set AT commands are issued to the modem to control the modem’s operation and software configuration. The basic command syntax is as follows: <command><parameter> The <command> is a combination of the attention prefix (AT) followed by the AT command.
  • Page 31 This command is supported to ensure compatibility with communications software that issues the C1 command. However, this modem does not support the C0 command. The C0 command instructs some modems not to send carrier (i.e., it puts them in receive-only mode). D<dial string>—Dial This command instructs the soft modem to go off-hook and begin the dialing sequence.
  • Page 32 parentheses are ignored by the modem and may be included in the dial string to enhance readability. Dial Modifiers Modifier Function Name Dial the last number Instructs the modem to dial the last Select pulse dialing — Select tone dialing(default) Wait for dial tone Dial pause Hook flash...

  • Page 33: H -Hook Control

    PCI Modem Card User's Manual E<value>—Echo Command Use this command to enable or disable the soft modem echo feature. When the echo feature is selected and the modem is in command mode, characters sent to the modem are sent back to the host and displayed on the monitor. F<value>—On-Line Data Character Echo Command This command is supported to ensure compatibility with communications software that issues the F1 command.
  • Page 34 The following table describes each of the results listed for the ATI 11 command. ATI11 Command Results Result Last Connection Initial Transmit Carrier Rate Initial Receive Carrier Rate Final Transmit Carrier Rate Final Receive Carrier Rate Current or final downstream rate. Protocol Negotiation Result Data Compression Result LAPM, MNP, or none, depending on V.42...
  • Page 35 PCI Modem Card User's Manual Receive Frame Count Receive Frame Error Count Retrain by Local Modem Number of retrains or rate renegotiations requested Retrain by Remote Modem Call Termination Cause Robbed-Bit Signaling Digital Loss (dB) Remote Server ID L<value>—Speaker Volume Use this command to set the monitor speaker volume setting when the speaker is on.
  • Page 36 Speaker is on until the modem detects the carrier signal (default). Speaker is always on when the modem is off-hook. Speaker is on until the carrier is detected, except when dialing. N<value>—Modulation Handshake Use this command to set the modem protocol for handling handshake negotiation at connection time if the communication speed of the remote modem is different from the speed of the local modem.
  • Page 37 Call progress and negotiation progress messages are affected by this command. W<value>—Result Code Option Use this command to select the modems CONNECT message options. X<value>—Extended Result Codes Control Use this command to select which result codes are used by the modem. The Enables result codes (default).

  • Page 38: Command Description

    parameter of this command is stored in bits 4—6 of register S22. X<value> Commands Command Description Busy detection is disabled; blind dialing (no dial tone detection) is enabled. The following result codes are supported: ERROR  Busy detection is disabled; blind dialing (no dial tone detection) is enabled.
  • Page 39 PCI Modem Card User's Manual Y<value>—Long-Space Disconnect This command is supported to ensure compatibility with communication software that issues the Y0 command. Long-space disconnect is always disabled. Z<value>—Reset and Recall Stored Profile Use this command to force the soft modem to go on-hook and restore a profile saved by the &W command.
  • Page 40 Use this command to control the modem’s response to receiving a remote modems carrier signal. Data carrier detect (DCD) is a signal from the modem to the DTE indicating that the carrier signal is being received from a remote modem. The modem typically turns off DCD when it no longer detects the remote modems carrier signal.
  • Page 41 PCI Modem Card User's Manual &K0 &K3 &K4 &M<value>—Asynchronous Communications Mode This command is supported to ensure compatibility with communication software that issues the &M0 command. The preferred method for changing the asynchronous communication mode is to use the \N<error control mode> command. &M0 &P<value>—Pulse Dial Make-to-Break Ratio Selection This command is effective only for Japan.

  • Page 42: W -Store Current Configuration

    &W<value>—Store Current Configuration Use this command to store the modems command options and all S registers except S3, S4, and S5. The Z<value> command or a powerup reset, of the modem, restores this profiles.
  • Page 43 PCI Modem Card User's Manual \A<value>—Select Maximum MNP Block Size The modem will operate an MNP error corrected link using a maximum block size controlled by the parameter sup-plied. \B<break time>—Send Break Use this command in non-error-controlled mode. It instructs the modem to transmit a break signal to the remote modem.
  • Page 44 Sends a break to the remote modem immediately. Sends a nondestructive, non expedited break to the remote modem (default). The second case occurs when the modem is in the on-line command state (waiting for AT commands) during a data connection, and the \B<value> command is received in order to send a break to the remote modem.
  • Page 45 PCI Modem Card User's Manual Disables flow control (same as &K0). XON/XOFF software flow control (same as &K4). \Q3 RTS/CTS to DTE (same as &K3) (default). \R<value>—Ring Indicator Signal Off After Answer This command is supported to ensure compatibility with communications software that issues the \R0 command.
  • Page 46 V.42 bis/ MNP 5 enabled. Data compression enabled (default). %E<value>—Auto Fallback/Fallforward Control This command provides the option for the modem to automatically monitor line quality, to fall back when line quality is insufficient, and to fall forward when line quality is sufficient. Disables fallback/fallforward.
  • Page 47 PCI Modem Card User's Manual +A8E=<v8o>,<v8a>,<v8cf>,<v8b>—V.8 and V.8 bis Operation Controls Use this command to set the control parameters for early call negotiation through V.8 and V.8 bis. +A8E* may also be used as an action command to reinitiate V.8 or V.8 bis if an earlier attempt to use either protocol has failed. <v8o>...
  • Page 48 Enables DTE-controlled V.8 negotiation. +A8T=<signal>,<1st_message>,<2nd_message>,<sig_en>,<msg_en>,<su pp_delay>—Send V.8 bis Signal and/or Message This command instructs the DCE to send a V.8 bis signal or message. This command is only supported when V.80 is enabled. Valid <signal> Values: None. Initiating Mre. Initiating MRd. Initiating CRe, low power.
  • Page 49 PCI Modem Card User's Manual +DR Data Compression Report Value +DR=0 +DR=1 +DR Data Compression Reporting Intermediate Result Codes +DR: NONE +DR: V42B +DR: V42B RD +DR: V42B TD +DR: V44 +DR: V44 RD +DR: V44 TD +DS=<direction>,<compression_negotiation>,<max_dict>,<max_string> —V. 4 2 bis Data Compression Use the +DS command to configure the V.42 bis data compression method used by the modem.
  • Page 50 Use this command to configure the V.44 data compression method used by the modem. The soft modem never disconnect if V.44 is not negotiated and always use the streaming method for data transfers. As a result, <compression_negotiation> and <capability> are always 0. The <direction>...
  • Page 51 PCI Modem Card User's Manual +EB=<break_selection>,<timed>,<default_length>—Break Handling In Error Control Operation Use this command to set the modem behavior when a BREAK is received. The <break_selection> parameter sets the type of break sent to the remote DCE when a break is received from the local DTE. The <timed> parameter sets whether the V.42 L-SIGNAL send the break length.
  • Page 52 +ER Control Reporting Commands: +ER=0 This command enables error control report (default). +ER=1 This command disables error control report. +ER Error Control Reporting Intermediate Result Codes +ER: NONE Data compression not in use. +ER: LAPM V.42 LAPM protocol is in use. +ER: ALT V.42 alternative protocol is in use.
  • Page 53 PCI Modem Card User's Manual +ETBM=<pending_TD>,<pending_RD>,<timer>—Call Termination Buffer Management Use this command to set the behavior of the modem during call termination. The <pending_TD> parameter controls how previously-transmitted data remaining in the DCE buffers is handled when the DTE request a disconnect from the call.
  • Page 54 +FCLASS=1 Selects the modems class 1 fax mode. +GCAP—Request Complete Capabilities List Use this command to display a list of the soft modems capabilities. This is an extended syntax command but it has only one form, +GCAP. +GCAP Responses: +FCLASS T.class 1, +F...
  • Page 55 PCI Modem Card User's Manual +GOI—Request Global Object Identification This command returns the ISO registration object identifier. +GOI +GOI=?, +GOI? +GSN—Request Product Serial Number Identification This command returns the product serial number. +IDSR=<value>—Select Data Set Ready Option Use this command to select how the soft modem manages the DSR signal (V.24 circuit 107).

  • Page 56: Mr= -Modulation Reporting Control

    +IPR=<DTE rate>—Fixed DTE Rate Use this command to set the DTE to DCE transmission rate. There are twelve fixed transmission rates used by the DTE to communicate with the DCE. This commands select one of the predefined transmission rates. If a rate is entered which is not supported, the transmission rate defaults to the next lower rate.
  • Page 57 PCI Modem Card User's Manual rate have been determined and before any error control or data compression reports or the final result code (e.g., CONNECT) is transmitted. +MR=0 +MR=1 +MS=<carrier>,<automode>,<min_rate>,<max_rate>—Modulation Selection Use this command to set the modem’s modulation, the modulation’s minimum and maximum transmission rate, and the status of automatic modulation negotiation (automode).
  • Page 58 Enables V.34 seamless rate change (default). +PCW=<call_waiting>—Call Waiting Enable Use this command to select how the modem responds to a call waiting signal. The soft modems response is also dependent on the current setting of the caller ID command, +VCID. Valid <call_waiting> Values: Enable the call waiting detector.
  • Page 59 PCI Modem Card User's Manual +PMH=<value>—Modem On Hold Enable Use this command to enable or disable modem on hold. Note, that the +PMH command does not effect the parameters of the +PMHT command. The +PMH command only enables or disables modem on hold. The +PMHT command configures the modem to deny a modem on hold request or grant a modem on hold request with the selected hold time.
  • Page 60 +PMHT=6 Grant modem on hold request with a 2 min. time-out. +PMHT=7 Grant modem on hold request with a 3 min. time-out. +PMHT=8 Grant modem on hold request with a 4 min. time-out. +PMHT=9 Grant modem on hold request with a 6 min. time-out. +PMHT=10 Grant modem on hold request with a 8 min.

  • Page 61: Fax Commands

    PCI Modem Card User's Manual +FTH=96 +FTH=73 +FTH=74 +FTH=97 +FTH=98 +FTH=121 V.17. 12000 bits/s. +FTH=122 V.17 (short train). 12000 bits/s. +FTH=145 V.17. 14400 bits/s. +FTH=146 V.17 (short train). 14400 bits/s. +FTM=<mod>—Transmit FAX Data with <mod> Carrier +FTM=<mod> command causes the modem to transmit data using the modulation defined as below.
  • Page 62 Note: This command controls automatic switching from class 1 to class 0 for call answering only. It does not affect call origination, switching to class 1 from other classes, or switching to classes other than class 0. +FAA=0 The DCE will answer only as a class 1 FAX device. No automatic switching of service class will occur based on the calling device type (default).
  • Page 63 PCI Modem Card User's Manual +FRH=96 +FRH=73 +FRH=74 +FRH=97 +FRH=98 +FRH=121 +FRH=122 +FRH=145 +FRH=146 +FRM=<mod>—Receive Data Use the +FRM command to instruct the modem to received data using the modulation defined as below: Command +FRM=3 +FRM=24 +FRM=48 +FRM=72 +FRM=96 +FRM=73 +FRM=74 +FRM=97 +FRM=98...
  • Page 64 The +FTH=<mod> command causes the modem to transmit data framed in the HDLC protocol at the modulation defined as below: Command Modulation +FTH=3 V.21 channel 2. V.27ter. +FTH=24 +FTH=48 V.27ter. +FTH=72 V.29. +FTH=96 V.29. +FTH=73 V.17. V.17 (short train). +FTH=74 +FTH=97 V.17.

  • Page 65: Result Codes

    PCI Modem Card User's Manual +FTS=<value> causes the modem to terminate a transmission and wait for <value> x 10 ms before responding with the OK result code. For example, <value> = 5 results in a 50 ms interval. <value> has a range of 0—255. A.2 Result Codes The soft modem AT command handler responds to commands from the caller and to activity on the line via result codes.
  • Page 66 CONNECT 26400 EC* CONNECT 28800 EC* CONNECT 31200 EC* CONNECT 33600 EC* CONNECT 38400 EC* CONNECT 57600 EC* CONNECT 115200 EC* 87 DELAYED BLACKLISTED BLACKLIST FULL CONNECT 32000 EC* CONNECT 34000 EC* CONNECT 36000 EC* CONNECT 38000 EC* CONNECT 40000 EC* CONNECT 42000 EC* CONNECT 44000 EC* CONNECT 46000 EC*...

  • Page 67: S-Registers

    PCI Modem Card User's Manual CONNECT 53333 EC* CONNECT 54666 EC* A.3 S-Registers The current setting of each S-register may be displayed by the S<register number>? command. There are two forms for this command. S<register number> Extended Syntax: S<register_number>? S<register_number>=<value>* Sets the contents of the register to S-Register Summary: Register Description Auto answer ring number.
  • Page 68 General bit-mapped options status: command echo, quiet mode, result codes, tone/pulse. Sync underrun fill character. 0—255 — V.24/general bit-mapped options status: DTR behavior, DCD behavior. Speaker/results bit-mapped options status: speaker volume, speaker control, limit result codes, pulse dial make/break ratio. General bit-mapped options status: guard tone type, busy cycles, bell mode permitted...
  • Page 69 PCI Modem Card User's Manual V.42 negotiation control. General bit-mapped options: calling tone flag, off-hook restrictions, blind dial pause, dial modifier validation, pulse and dial tone in same dial string. Blind dialing delay. General bit-mapped options. — Reserved. PSTN transmit attenuation level.

  • Page 70: Appendix B Specifications

    Appendix B Specifications Compatibility ITU-T V.92 V.90 ITU-T V.34Annex12 ITU-T V.34 ITU-T V.32 bis ITU-T V.32 ITU-T V.17 ITU-T V.29 ITU-T V.27 ter ITU-T V.22 bis ITU-T V.23 ITU-T V.22 ITU-T V.21 BELL 212A BELL 103 Modulation 56000bps(ITU-T V.90) 33600bps(V.34Annex12) 31200bps(V.34Annex12) 28800bps(V.34/V.FC) 14400bps (V.32 bis)

  • Page 71: Plug And Play

    PCI Modem Card User's Manual 14400bps (V.17) 12000bps (V.17) 9600bps (V.29) 7200bps (V.29) 4800bps (V.27ter) 2400bps (V.27ter) 2400bps (V.22bis) 1200bps/75bps(V.23) 1200bps (V.22/Bell 212A) 300bps (V.21/Bell 103) Operation Full-duplex or half duplex in Data mode. Half-duplex in Fax mode. Asynchronous operation. Auto dial/answer.

  • Page 72: Fax Mode

    Fax mode Fax modem send and receive rates up to 14400bps V.17, V.29, V.27ter, and V.21 channel 2. TIA/EIA 578 Class1 FAX. Asynchronous Data Format Parity Data Length None Even None Line Operating Speed 56000bps, 52000bps, 48000bps, 40000bps, 36000bps, 32000bps.(Receive Only) 33600bps, 31200bps, 28800bps, 26400bps, 24000bps, 21600bps, 19200bps, 16800bps, 14400bps, 12000bps, 9600bps, 7200bps, 4800bps, 2400bps,...

  • Page 73: Return Loss

    PCI Modem Card User's Manual DTMF SIGNAL LEVEL (dBm) Hi. G = -8± 2 dBm Lo. G = -10± 2 dBm M/B RATIO 39± 3/61± 4 RETURN LOSS 300Hz ~ 3400Hz >10 dB Carrier Frequency V.34 V.32bis V.32 V.17 V.29 V.27ter V.22bis, original mode V.22bis, answer mode...
  • Page 74 `DTMF Tone Frequency 1209 High Group 1336 Frequency (Hz) 1477 1633 *Specification and features subjects to change without notice. Appendix B Specifications Low Group Frequency (Hz)

  • Page 75: Appendix C Glossary

    ASCII set. Baud Rate - The transmission rate between two serial devices, e.g., modems, fax machines, etc. Measured in Bits Per Second. Blind Dialing - In blind dialing, the modem continues to dial, regardless of the existence of a dialtone, ring, or busy signal.
  • Page 76 PCI Modem Card User's Manual Modem - A combination of the words MOdulator and DEModulator. Modems transform digital data into analog signals and back again. Nonvolatile Memory - An area of memory inside the modem where the default configuration profile is stored. Values recorded in this memory will not be lost when the power is turned off.
  • Page 77 Appendix C Glossary RAM - Random Access Memory. ROM - Read-Only Memory. A chip inside the modem which stores the factory default settings. This memory cannot be changed. RTS - Request To Send. RX - Reception. S Register - RAM locations in the modem which store the active configuration.

  • Page 78: Appendix D Ascii Code Table

    Appendix D ASCII Code Table Decimal Hex Value Decimal Hex Value Decimal (space) " & < > Value Decimal Value...

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