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BT has previously said it will roll out the Motorola A910 as soon as it becomes available, which means competition in the UMA space is likely to kick off proper in November, when both operators launch similar services. Orange also plans to launch the service to its customers in France, the Netherlands, Spain and Poland at the same time as the UK.
BT meanwhile, is expected to introduce the corporate version of its Fusion service in Italy in early 2007, followed by a phased international roll out in Germany, Benelux, Spain and France.
Carrie Pawsey, telecoms analyst at Ovum, said ealier this year that BT's Fusion will face issues such as billing integration with Vodafone, BT's cellular partner. Through its integration with France Telecom, Orange's Unique customers will receive a single bill from Orange for converged calls and broadband access.
But on a side note, analysts believe that UMA offerings have been hamstrung by a lack of available handsets, as BT's long wait for a wi-fi-enabled device testifies. In the interim, other operators such as Telefonica Moviles, which have gone down the Session Initiation Protocol (SIP) route to drive their wireless VoIP strategy look set to steam ahead in the future. Although UMA is 3GPP standards-based, SIP and IP Multimedia Subsystem (IMS) implementations are thought to have a longer term and much clearer evolutionary roadmap. However, IMS and SIP have a far higher entry cost and as such may be unpopular for "concept testing". UMA over Bluetooth / WiFi is far easier to esrtablish and then develop into a SIP based proposition as that technology along with IMS is rolled out in Core networks.