Books I have co-authored

Exorbitant data roaming as an n-person Prisoner’s Dilemma

One of the major hurdles for further growth of mobile data services, and LBS in particular, is the exorbitant data traffic fees customers incur when using their phones abroad.

Corporate users can pretend that the service is free but their employers certainly notice if the mobile Net bill is larger than the hotel bill. In the [...]

Skype traffic up 50% in one year, has 12% of international calling minutes

Skype is now the undisputed market leader in international voice traffic with a 12% market share. More info here.

A privacy backlash on its way: telcos will be in center of the storm

After 9/11 it was inevitable that the trade-off between civil liberties and security would shift in favor of security. The thinking of this period can neatly be summarized in a quote by Tony Blair who said something like “if there is a new terrorist attack, people will not ask why we infringed on civil liberties [...]

The missing function in mobile voicemail

Have the mobile operators overlooked how customers use the Forwarding To Voicemail function when a call is not answered? If someone calls your mobile and you don’t answer, the call is forwarded to your voicemail after a few rings. I find it very irritating that I can’t set the time to more than 30 seconds [...]

EU Telecom Package: a repeat of copyright lobby strategy from the 90s

The conflict between the tech industry and the copyright lobby has been going on since the 1990s. The current controversy surrounding the EU Telecom Package is very similar to the fight that took place in 1999 when the EU Copyright Directive (2001/29/EC) was put to a vote in the EU Parliament.

At that time the copyright [...]

Net Neutrality: AT&T blocks unwanted traffic types in their mobile network

Many critics of the EU Telecom Package have feared that the principle of Net Neutrality will be undermined and abandoned. One example of this is TeliaSonera, which has blocked VoIP and P2P file sharing in their cheaper Swedish data plans Mobilsurf Bas and Mobilsurf Alltid.

In May, AT&T also limited their mobile data traffic. In their [...]

It took five years – Skype largest in the world

Traffic data from Telegeography shows that Skype has eight percent of the international voice traffic market. This makes Skype the largest actor in the world when it comes to international voice (which includes both POTS voice and VoIP from Skype and others). During 2008 the number of Skype traffic minutes grew with 41 percent and [...]

Google Voice is launched: the market Verizon missed

Almost two years after Google bought the startup GrandCentral they have now launched their repackaged services under the brand Google Voice on the U.S. market. With Google Voice you can manage your telephony via the web and they have developed a suite of interesting but rather obvious services around call forwarding and voicemail. Google Voice [...]