Posts tagged ‘GSM’

I was a bit afraid that getting an UMTS USB stick to work under Linux would be an impossible task. Turns out to be reasonably simple. These notes are for a Huawei K4505 HSPA+ USB stick, as provided by Proximus (Vodaphone group).

Continue reading ‘Mobile broadband USB stick on Linux’ »

One very nice feature the iPhone lacks is the ability to request a delivery report on text messages. I usually abuse these by sending a text message to family/friends while they’re on a plane. As soon as they land and switch on their phone, I get a delivery report. Which essentially tells me “for free” that the person has landed. (With Belgian carriers, receiving text messages is always free, even abroad, because you can’t refuse them).

Continue reading ‘SMS Delivery report on iPhone’ »

When troubleshooting a network performance problem today, I discovered some strange behavior when using an internet connection over a cellular network (GSM in my case):

When the line was idle for half a minute or so, the connection seems to hang a few seconds before working again. I verified this with our mobile provider Proximus and got the following interesting response: (liberally translated by me)
Continue reading ‘Setup delay on wireless data networks’ »