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Last Updated: Monday, 16 July 2007, 20:48 GMT 21:48 UK
T-Mobile must open Truphone lines
Truphone webpage
Truphone routes mobile calls via the internet
A court has stepped into a row between mobile phone network operator T-Mobile and wi-fi phone firm Truphone.

Truphone had accused T-Mobile of hindering its service, by blocking calls made to numbers owned by the fledgling mobile operator.

In the High Court on Monday Truphone was granted an injunction to force T-Mobile to put the calls through.

In court documents T-Mobile had said it had offered Truphone a deal to route its calls, but that had been rejected.

However, the court also ruled that T-Mobile would have to pay Truphone a smaller share of the call fee than originally demanded. The so-called termination fee has now been set provisionally at the level that T-Mobile originally proposed.

Court papers

The Truphone service works by routing calls via wi-fi when handsets are within range of wireless hotspots the phone can connect to.

By using the wi-fi and the net Truphone hopes to cut mobile call costs - particularly those made to overseas numbers.

In its court documents, Truphone said T-Mobile was "abusing its dominant position" by not putting its numbers through.

Deputy High Court judge Robin Knowles QC granted an injunction requiring T-Mobile to activate the Truphone numbers.

He granted the injunction until the two companies can either agree terms together, or have the courts decide how the matter should be resolved.

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