Devoteam is to release a Blackberry version of its VoIP client OnePhone that runs on mobile platforms enabling voice calls over an IP network.

It is expected to be available for the RIM handset in the first quarter of 2009.

OnePhone is a SIP-based, dual mode GSM-WiFi solution that is able to interwork with public and private WiFi hot spots, and with mobile networks.

The application, which effectively turns mobile devices into extensions of employees’ desk phones, is also being made ready for Android and the iPhone.

Christoph Wernli, business development manager at Devoteam, told that legal requirements meant the application would have to be modified to comply with Apple’s legal requirements for services such as VoIP functionality.

That aside, he said the aim was to expand beyond the current offering for Symbian and Windows Mobile handset to provide its clients – and in particular operators – with a wider choice of devices on which OnePhone can be used.

"What we are aiming to do is create this same kind of convergence platform for all operating systems out there," he said.

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