UMTS/HSPA Module Series
UC20 PPP Application Note
UC20_PPP_Application_Note Confidential / Released 3 / 29
Contents
About the Document ................................................................................................................................... 2
Contents ....................................................................................................................................................... 3
Table Index ................................................................................................................................................... 4
Figure Index ................................................................................................................................................. 5
1
Introduction .......................................................................................................................................... 6
2
Application Mode ................................................................................................................................. 7
3
Procedure for PPP Setup .................................................................................................................... 8
3.1.
General Procedure for PPP Setup .............................................................................................. 8
3.2.
Recommended Procedure for PPP Setup .................................................................................. 9
4
UART/USB for PPP Connection ....................................................................................................... 11
4.1.
Data Mode and Command Mode .............................................................................................. 11
4.1.1.
Switch from Data Mode to Command Mode .................................................................. 11
4.1.1.1. Use DTR Level Switch from Data Mode to Command Mode ................................. 11
4.1.1.2. Use Se++ to Switch from Data Mode to Command Mode ...................... 11
4.1.2.
Switch from Command Mode to Data Mode .................................................................. 12
4.1.2.1. Use ATO to Switch from Command Mode to Data Mode ....................................... 12
4.2.
Terminate the Connection ..................................................................................................... 12
4.3.
Handle URC in Data Mode .................................................................................................... 13
4.4.
Data Carrier Detect (DCD) Function Mode ........................................................................... 13
5
PPP Dial-up in Windows .................................................................................................................... 14
5.1.
Preparation ............................................................................................................................ 14
5.2.
Modem Configuration ............................................................................................................ 14
5.2.1.
Add a New Modem ......................................................................................................... 14
5.2.2.
Configure the Modem Driver .......................................................................................... 18
5.3.
Dial-up Network Configuration .............................................................................................. 20
5.3.1.
Create a New Connection .............................................................................................. 20
5.3.2.
Configure the Connection .............................................................................................. 21
5.3.3.
Configure the Dial-up Tool.............................................................................................. 22
5.3.4.
Establish the Dial-up Connection ................................................................................... 23
6
PPP Dial-up in Linux .......................................................................................................................... 25
6.1.
Prepare PPPD and CHAT ..................................................................................................... 25
6.2.
Create Script Files ................................................................................................................. 25
6.3.
Set up PPP Connection by PPPD ......................................................................................... 26
7
Appendix A Reference ....................................................................................................................... 28
Quectel
Confidential
