clearwire blocks voip. what is to be done?

[xpromache]

Hello, sorry for posting in english.
A friend of mine just subscribed to clearwire (with a two years contract ) and now we see that clearwire blocks the access to the SIP providers like sipgate.de. The reason they invoke is the saturation of network, this is simply bullshit, the real reason being that they want to offer voip in the future. It seems that they brought these practises from north america: http://www.wi-fiplanet.com/voip/article.php/3494171
In their terms and conditions they don't say anything about blocking voip. Anybody has an ideea about what can be done to end the contract or to make them unblock the voip traffic?

thanks,
mache

[Visiteur]

This is clearly abusive and that argument about bandwidth does sound like utter rubbish. Have you tried contacting the telecoms mediator ? A complaint might do much good but perhaps they can advise you.

P.S: The Belgian ISP market clearly needs regulation to avoid these stupid practises designed to force a client's hand.