Wednesday·23·July·2008
Debian and GPRS with the Nokia E51 //at 01:33 //by abe
A while ago I wanted to have internet over GPRS (either EDGE or UMTS) via my Nokia E51 working before I leave for the weekend. But whatever I tried, I always got an ERROR if I sent any AT command. Even ATZ and ATH resulted in errors. So started googling for all components: I found AT commands which are said to work with the Nokia E51, I found AT commands which are said to work with Swisscom GPRS and I found many sites describing how to setup a bluetooth modem.
But since the even those AT commands which should work with both, Swisscom GPRS and Nokia E51 didn’t work at all, I noticed that all the Nokia E51 howtos were using the USB cable. So I tried that, too, and it worked immediately. It looks very strange to me that the set of AT commands is dependend on which way you connect to the phone. :-/
So here’s my working PPP config:
hide-password noauth connect "/usr/sbin/chat -e -f /etc/chatscripts/swisscom-gprs" /dev/ttyACM0 460800 defaultroute crtscts user "guest" usepeerdns noccp bsdcomp 0,0 lcp-echo-failure 10000 lcp-echo-interval 1000 asyncmap 0 novj nomagicand the chat script (
/etc/chatscripts/swisscom-gprs):
TIMEOUT 5 ABORT BUSY ABORT 'NO CARRIER' ABORT VOICE ABORT 'NO DIALTONE' ABORT 'NO ANSWER' ABORT DELAYED ABORT ERROR '' \nAT TIMEOUT 12 OK ATH OK ATE1 OK 'AT+CGDCONT=1,"IP","gprs.swisscom.ch"' OK ATD*99# CONNECT ""
So I have now four levels of mobile computing available:
- Nokia E51 with T9 and phone keyboard (for short texts)
- Nokia E51 with Nokia SU-8W bluetooth keyboard (for longer texts and emergencies, see photo on the right)
- ASUS EeePC (7", 630 MHz Celeron, 2GB RAM, 4GB SSD) with Nokia E51 as modem (complete computer, but still small, portable and nearly always with me)
- Lenovo ThinkPad T61 (14" wide screen, 2.2 GHz Core2Duo, 4GB RAM, 160 GB SATA Disk) with Nokia E51 as modem (complete computer with power and disk space)
Should suffice in nearly all situations. ;-)
Tagged as: AT, Bluetooth, c-crosser, chat script, Debian, EDGE, EeePC, Etch, GPRS, Lenny, nemo, Nokia E51, Nokia SU-8W, Swisscom, T61, ThinkPad, UMTS, USB, Zürich
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