The Linux GPRS HOWTO

Wesley PA4WDH mailto:pa4wdh-at-yahoo-dot-com

1. Introduction

• 1.1 GNU Free Documentation License
• 1.2 Disclaimer
• 1.3 Why this document
• 1.4 About the author
• 1.5 New versions
• 1.6 Thanks and Credits
• 1.7 Changelog

2. Before you start

• 2.1 Requirements for you
• 2.2 Requirements for your computer
• 2.3 Some basic GPRS information and terminology
• 2.4 Basic information on GPRS functioning

3. The kernel and specific hardware

• 3.1 IP and PPP support
• 3.2 Hardware your stuff connects to
• 3.3 Phones connecting to the Serial port
• 3.4 Phones connecting to the USB port
• 3.5 Phones connecting via IrDA
• 3.6 Phones connecting via Bluetooth
• 3.7 Sierra Wireless cards
• 3.8 Nokia D211
• 3.9 Novatel Wireless Merlin U530 card
• 3.10 Option Fusion UMTS Quad-GPRS card
• 3.11 Option GlobeSurfer Icon
• 3.12 High Speed Option Wireless cards (GT Express, GT Max, GT HSUPA)
• 3.13 Huawei Mobile E620 card
• 3.14 ZTE MF112/MF628 USB "Stick"
• 3.15 Huawei E270
• 3.16 Huawei E870
• 3.17 Sierra Wireless MC8780 module
• 3.18 Sony Ericsson k610i/k610im
• 3.19 Neo Freerunner
• 3.20 Hardware not listed here

4. Bluetooth

• 4.1 The kernel
• 4.2 Bluez utils
• 4.3 Finding your phone
• 4.4 More information

5. Controlling your "modem"

• 5.1 Checking the serial port
• 5.2 Entering you PIN Code
• 5.3 Controlling your Attach
• 5.4 PDP Context Profiles
• 5.5 Actually Dialing

6. Configuring a Dialer

• 6.1 The basic idea
• 6.2 Simple Dialing with pppd
• 6.3 Simple Dialing with wvdial
• 6.4 A wvdial Dialer script if you use different APN's
• 6.5 An advanced wvdial script to use with different devices and APN's
• 6.6 GUI dialers

7. Security

• 7.1 Firewall
• 7.2 Other security measures
• 7.3 Bluetooth

8. Troubleshooting

• 8.1 PDP Context disconnects after a few minutes
• 8.2 Poor PPP performance (High packet loss)
• 8.3 pppd message: not replacing existing default route via x.x.x.x
• 8.4 pppd message: Receive serial link is not 8-bit clean:
• 8.5 Other pppd messages
• 8.6 When i insert the device nothing happens (no messages in dmesg)
• 8.7 When i insert the device the only thing i get is a CD-ROM device
• 8.8 My downlink speed is limited to only 60 KByte per second