Multi-Tech Systems MT5600DSVD

MultiModemDSVD User Guide C Loopback Tests

3. Type the escape sequence +++AT and press ENTER to bring your modem into

online command mode.

4. Type AT&T3 and press ENTER. Once you receive an OK message from your mo-

dem (if responses are enabled), your modem is placed in digital loopback mode.

5. Have someone enter data from the remote keyboard. For this test, typing multiple

uppercase U characters is a good way to send an alternating test pattern of binary

ones and zeros. The data received by your modem enters its analog receiver, is

converted to digital data, is reconverted into analog, and then is transmitted

back to the remote modem. Your modem passes this test if the characters re-

ceived on the remote monitor are the same as those entered from the remote

keyboard.

6. To exit the test, turn off the modems.

Contents

Main ii iii Chapter 1: Introduction Chapter 2: Installation Chapter 3: Operation iv Chapter 4: AT Commands, S-Registers & Result Codes Chapter 5: Solving Problems Appendix B: Technical Specifications Appendix A: Regulatory Compliance Appendix C: Loopback Tests Appendix E: Upgrading the Modem Index Page 2 Product Description Features General 3 Data Fax Voice What Is in Your Modem Package? Related Manuals Page What You Will Need We supply You supply Safety Warnings Step 1: Mount the Feet Step 2: Change the Speaker Jumper Opening the Modem Changing the Speaker Jumper Step 3: Connect the Modem to Your System RS232 Connection Line Connection Phone Connection Microphone Connection Speaker Connection Power Connection Power-On Test Step 4: Install the Modem Driver Installing the Modem Driver Removing Your Old Modem Driver Step 5: Install and Configure Your Software Page Front Panel Configuring the Modem Connecting to the Internet Dial-Up Networking Dial-Up Networking in Windows 95/98 Dial-Up Networking in Windows Me Dial-Up Networking in Windows NT 4.0 Dial-Up Networking in Windows 2000 Fax Operation Voice Operation To Originate a Voice Call in Speakerphone Mode To Answer a Voice Call in Speakerphone Mode To Originate a DSVD Call Using the Headset To Answer a DSVD Call Using the Headset References Page AT Commands AT Command Summary s y Page Page Page Page Page Page Page =x Page Page Page Page Page Voice Commands =n S-Registers Page Page Page Result Codes Page Page Page None of the Indicators Light The Modem Does Not Respond to Commands The Modem Dials But Cannot Connect The Modem Disconnects While Online The Modem Cannot Connect When Answering File Transfer Is Slower Than It Should Be Data Is Being Lost There Are Garbage Characters on the Monitor The Modem Doesnt Work with Caller ID Fax and Data Software Cant Run at the Same Time Page Appendix A: Regulatory Compliance FCC Part 68 Telecom FCC Part 15 Industry Canada Fax Branding Statement Canadian Limitations Notice EMC, Safety, and R&TTE Directive Compliance International Modem Restrictions New Zealand Telecom Warning Notice South African Notice Appendix B: Technical Specifications Page Page Appendix C: Loopback Tests Local Analog Loopback Test (V.54 Loop 3) Remote Digital Loopback Test (V.54 Loop 2) Local Digital Loopback Test (V.54 Loop 2) Page Appendix D: Warranty, Service, and Technical Support Limited Warranty Online Warranty Registration Service North American Products Technical Support Internet Sites Ordering Accessories Appendix E: Upgrading the Modem Upgrade Overview Step 1: Identify the Modem Firmware Step 2: Identify the Current Firmware Version Step 3: Download the Upgrade File Step 4: Extract the Upgrade Files Step 5: Clear Your Stored Paramenters Step 6: Upgrade the Modems Firmware Step 7: Restore Your Parameters Page A B C D E F G H I K T U V W X