Contents
4
Multi-Tech Systems, Inc. MultiModem GPRS USB Wireless Modem User Guide
Band Options Overview
............................................................................................................................. 27
Changing the GPRS Band
........................................................................................................................ 27
Determining the Phone Number for the Wireless Modem
................................................................ 27
Examples of Useful AT Commands
..................................................................................................... 28
Verifying Signal Strength
........................................................................................................................... 28
Checking Network Registration and Roaming Status
........................................................................... 28
Checking the Modem’s Identity
................................................................................................................ 28
Establishing a Voice Call
........................................................................................................................... 29
Establishing a Circuit-Switched Data (CSD) Connection
..................................................................... 30
Answering a Circuit-Switched Data (CSD) Connection
........................................................................ 30
Using Short Message Services (SMS)
................................................................................................. 31
Sending a Short Message to a Specified Number
................................................................................. 31
Writing a Message to Memory
.................................................................................................................. 31
Sending a Message from Storage
............................................................................................................ 31
Viewing a List of Stored Messages
.......................................................................................................... 31
Reading a Stored Message
....................................................................................................................... 31
Deleting a Stored Message
....................................................................................................................... 31
SMS Examples
............................................................................................................................................ 32
Setting up Internet Access
................................................................................................................... 34
Connecting to the GPRS Network for Internet Access
......................................................................... 34
Before you Begin
........................................................................................................................................ 34
Setting the Access Point Name (APN)
.................................................................................................... 35
Creating Your Dial-Up Connection in Windows Vista, XP, 2003, and 2000
...................................... 36
Disconnecting
.............................................................................................................................................. 36
Chapter 4 – Troubleshooting and Frequently Asked Questions
............................................ 37
Troubleshooting Examples
................................................................................................................... 37
Situation A:
The modem does not answer
............................................................................................ 37
Situation B: The modem always returns «No carrier» when trying to originate a call
...................... 38
Frequently Asked Questions
................................................................................................................ 39
Appendix A - Environmental Information
.................................................................................. 41
Waste Electrical and Electronic Equipment (WEEE)
......................................................................... 41
Instructions for Disposal of WEEE by Users in the European Union
.................................................. 41
REACH Statement
.................................................................................................................................. 41
Restriction of the Use of Hazardous Substances (RoHS)
................................................................ 42
China ROHS
............................................................................................................................................ 43