相撲外：Setting up UMTS/GPRS on the Universal

Install socat:

# aptitude install socat

Edit the /etc/htcunid/htcunid.conf with the date of your provider, for Czech O2:

# echo 'gprs_apn = "internet"' > /etc/htcunid/htcunid.conf

Now you can start the ppp as a daemon to dial into your provider's UMTS (3G) / GPRS service when apps need internet access, for Czech O2 with:

# pppd pty 'socat - tcp:127.0.0.1:1702' noauth defaultroute demand connect noipdefault user "internet" /bin/true idle 60 holdoff 3

Or you can dial manually with, for Czech O2:

$ pppd pty 'socat - tcp:127.0.0.1:1702' noauth defaultroute usepeerdns debug nodetach