A year ago I was musing over the fact that despite there being quite a number of phones today that can do SIP over Wi-Fi, non are Wide Band AMR capable for superior sound quality. Quite a waste as without network based transcoders between the two...

Dual Carrier HSDPA is in the 3GPP standards for some time now and in the mid-term we'll probably see it deployed. So where to go with HSPA next? Well, 3GPP RAN discusses 4 Carrier HSDPA spread over different frequency bands. That's for 3GPP Release 10...

How delighted I was when I was in the US last year that AT&T had a prepaid Internet access offer that worked pretty well for me. Unfortunately, it didn't last long and AT&T abandoned the tariff after a couple of months. Quite a disappointment. But now...

Today follows part 3 of my IPv6 crash course. You can find the first two parts here and here.ARP Becomes Neighbor DetectionTo translate layer 3 IP addresses into layer 2 MAC addresses, the Address Resolution Protocol (ARP) was used in IPv4. In IPv6 a...

This week saw a number of interesting press announcements on first voice over LTE calls: First was the VOLGA forum who announced the first voice call between two LTE networks, one in Bonn Germany with a Kineto VOLGA Access Controller and the other one...