Black Box MD403A Modem Cannot Connect When Answering, Modem Doesn’t Work with Caller ID

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PORTABLE USB MODEM

If you have extension phones on the same line as your modem, you or someone else can interrupt the connection by picking up another phone. If this is a frequent problem, disconnect the extension phones before using the modem, or install another phone line especially for the modem.

Check for loose connections between the modem and the computer and the telephone jack.

You might have had a poor connection because of line conditions or the problem might have originated on the other end of the line. Try again.

If you were online with an online service, it might have hung up on you because of lack of activity on your part or because you exceeded your time limit for the day. Try again.

6.5 The Modem Cannot Connect When Answering

Autoanswer might be disabled. Turn on autoanswer in your data communications program or send the command ATS0=1 (ATS0=2 if you have Caller ID service) to make sure your modem is in terminal mode.

6.6 The Modem Doesn’t Work with Caller ID

Caller ID information is transmitted between the first and second rings, so if autoanswer is turned off (S0=0) or if the modem is set to answer after only one ring (S0=1), the modem will not receive Caller ID information. Check your initialization string, and if necessary change it to set the modem to answer after the second ring (S0=2).

Make sure that you have Caller ID service from your telephone company.

6.7 Fax and Data Software Can’t Run at the Same Time

Communications devices can be accessed by only one application at a time. In Windows 98, you can have data and fax communication applications open at the same time, but they cannot use the same modem at the same time.

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Contents Portable USB Modem Users’ Manual FCC and IC RFI Statements EMC, Safety and R&TTE Directive Compliance FCC Requirements for Telephone-Line Equipment Certification Notice for Equipment Used in Canada NOM Statement Portable USB Modem Trademarks Used in this Manual Contents Contents Command Buffer 40 characters SpecificationsAGC Dynamic Range 43 dB Frequency Stability ±0.01%Temperature Tolerance 32 to 120F 0 to 50C Overview IntroductionUniversal Serial Bus USB What the Package IncludesWhat Can You Do with Your Modem? Features Required Equipment Connections USB and communications connectorsFront panel Front PanelConnect the Modem to Your System InstallationInstalling the Modem Welcome screen Install Hardware Device Drivers screen Locate Driver Files screen Driver Files Search Results screen Digital Signature Not Found screen appears Click Yes to continue with the installationCompletion screen Installation in Windows ME Portable USB Modem Add New Hardware Wizard screen What do you want Windows to do? screen 10. Windows will search for a new driver screen 11. Updated driver found screen 12. Verification screen 13. Finish screen Go to Start Settings Control Panel Click Start Settings Control PanelConfiguring the Modem for Your Country References AT Commands AT Commands, S-Registers, and Result CodesAnswer Repeat Last CommandCommunication Standard Setting Enter KeyDial Carrier ControlATDT1028807637853500$123456789 Hook Control Echo Command Mode CharactersDS=y Dial Stored Telephone Number Echo Online Data CharactersPulse Dialing Monitor Speaker ModeReturn Online to Data Mode Modulation HandshakeTone Dialing Result Codes Enable/DisableSr=n Set Register Value Sr? Read Register ValueAuto Retrain Modem ResetResult Code Selection Long Space Disconnect22bis Guard Tone Control Load Factory SettingsData Carrier Detect DCD Control ON/X-OFF Pacing ControlData Set Ready DSR Control Asynchronous Communications ModeTest Commands Flow Control SelectionZy=x Store Dialing Command Display Current SettingsStore Current Configuration Select Stored Configuration for Hard Reset\Kn Break Control \Bn Transmit Break\Gn Modem Port Flow Control \Jn Data Buffer Control\Nn Error Correction Mode Selection Online command mode. The modem receives a\Xn ON/X-OFF Pass-Through \Tn Inactivity Timer\Qn Flow Control Selection \Vn Protocol Result CodeData Compression Control Adaptive Answer Result Code Enable#Sx Enter Setup Password View Numbers in Blacklist#S=x Atcr Remote Configuration Escape Sequence+++ATCR Escape Sequence Registers Unit Range Default DescriptionSeconds 255 Unit Range Default Description Upstream data rates S48=7 S48=128 Verbose Description Result CodesConnected at 2400 bps Terse Verbose Description Introduction Remote ConfigurationBasic Procedure SetupChanging the Setup Password None of the Indicators Light TroubleshootingModem Does Not Respond to Commands Modem Dials But Cannot Connect Modem Disconnects While Online Modem Doesn’t Work with Caller ID Modem Cannot Connect When AnsweringFax and Data Software Can’t Run at the Same Time Shipping and Packaging Calling Black BoxAppendix A. V.90 Support V.90 TroubleshootingAppendix B. Loopback Tests Figure B-1. Local analog loopback test Local Analog Loopback Test V.54 LoopFigure B-2. Remote digital loopback test Remote Digital Loopback Test V.54 LoopFigure B-3. Local digital loopback test Local Digital Loopback Test V.54 LoopAppendix B Loopback Tests Appendix C. Dial-Up Networking Windows 98/Me Dial-Up Networking Figure C-3. Dial-Up connection created Figure C-4. Networking tab Figure C-5. TCP/IP Settings dialog box Figure C-6. Network Connection Wizard dialog box Windows 2000 Dial-Up NetworkingFigure C-7. Network Connection Type dialog box Figure C-8. Welcome to the Internet World Connection Wizard If you select Accept incoming connections Internet account connection, and click NextIf you select Connect directly to another computer Appendix D. Upgrading Modem Upgrade OverviewAppendix D Upgrading the Modem Copyright 2004. Black Box Corporation. All rights reserved
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MD403A specifications

The Black Box MD403A is a powerful and versatile device widely recognized for its advanced technology and its ability to streamline data communication. Ideal for both personal and professional use, the MD403A is designed to cater to various environments, from small offices to larger enterprises.

One of the main features of the MD403A is its robust connectivity options. It supports multiple interfaces, including USB, HDMI, and Ethernet, allowing seamless integration with various devices such as computers, projectors, and IP networks. This flexibility makes it a popular choice for businesses that require reliable data transmission across different platforms.

The device is equipped with advanced signal processing capabilities that ensure high-quality data transfer. Utilizing cutting-edge technology, the MD403A minimizes signal loss, thereby enhancing performance and ensuring that the transmitted data remains intact. This feature is particularly crucial in scenarios where large amounts of data need to be transmitted quickly and without loss of quality.

Another significant characteristic of the Black Box MD403A is its user-friendly design. The interface is intuitive, making it easy for users of all technical abilities to navigate the system effortlessly. It typically comes with a straightforward setup process, minimizing downtime and allowing users to get up and running quickly.

The MD403A also boasts advanced security features. It employs multiple encryption protocols to safeguard sensitive information during transmission. With increased cybersecurity concerns, this feature is essential for businesses that handle confidential data, ensuring compliance with various regulatory requirements.

Additionally, the device supports various video resolutions, making it suitable for both standard and high-definition applications. This feature is particularly beneficial for users who want to deliver high-quality presentations or video content without compromising on clarity.

In terms of durability, the MD403A has a sturdy design that can withstand the rigors of daily use. Its compact form factor allows for easy portability, making it an ideal choice for professionals who are always on the move.

In summary, the Black Box MD403A combines advanced features, multiple connectivity options, robust security, and ease of use, making it an essential tool for modern communication needs. Its adaptability and performance make it a preferred choice for users seeking reliable data transfer solutions in diverse settings.