A1 Telekom Austria Internet via UMTS seems to have a forced disconnet every 8h

December 31, 2011

I think it is well known that the DSL Internet plans from A1 Telekom Austria for private user (= not the more expensive business plans) have a forced 8h disconnect. I searched the Internet to check if it is the same for there UMTS USB sticks, and couldn’t find anything – seems that nobody cares or tried it. So I put the USB Stick into my server and let it run for a week now, and I can say now: Yes, there is a forced disconnect normally every 8h … but sometimes they seem to miss it. Take a look at the last few days – I did a grep on the connect time and the pid of the umts pppd:


# cat /var/log/messages | grep "Connect time" | grep "9069"

Dec 27 20:56:17 xxx pppd[9069]: Connect time 480.0 minutes.
Dec 28 04:56:53 xxx pppd[9069]: Connect time 480.0 minutes.
Dec 28 12:57:00 xxx pppd[9069]: Connect time 480.0 minutes.
Dec 28 20:57:05 xxx pppd[9069]: Connect time 480.0 minutes.
Dec 29 04:57:42 xxx pppd[9069]: Connect time 480.0 minutes.
Dec 29 12:57:49 xxx pppd[9069]: Connect time 480.1 minutes.
Dec 29 22:20:09 xxx pppd[9069]: Connect time 561.8 minutes.
Dec 30 06:20:44 xxx pppd[9069]: Connect time 480.0 minutes.
Dec 30 14:23:20 xxx pppd[9069]: Connect time 482.5 minutes.
Dec 30 22:05:07 xxx pppd[9069]: Connect time 461.7 minutes.
Dec 31 06:05:44 xxx pppd[9069]: Connect time 480.0 minutes.
Dec 31 14:06:21 xxx pppd[9069]: Connect time 480.1 minutes.

ps: 480min = 8h

Somebody knows why they are missing some disconnect times? Maybe it is traffic related – I try to make some traffic every few seconds on the link to verify that.

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