Deutsche Telekom backs SIP for convergence
13 March 2006
German incumbent, Deutsche Telekom, has unveiled its own fixed-mobile convergence offering, following closely in the footsteps of BT and France Telecom.
Dubbed 'T-One', the integrated dual mode telephony solution combines fixed line and mobile and is being piloted on Nokia's forthcoming N80 and E60 devices.
Similar to BT Fusion, T-One will let users of the wifi enabled N80 and E60 devices use the same data and voice over IP (VoIP) services over the home wi-fi network and DT fixed line connection, and/or on the move through a T-Com hotspot.
Outside of wifi coverage, both devices work on GSM and WCDMA networks.
Carrie Pawsey, industry analyst at Ovum, believes the most interesting aspect to the offering is that DT has opted for a Session Initiation Protocol (SIP) solution to deliver VoIP services.
The Nokia E60 and N80 are the first Nokia devices able to support SIP-based internet calls.
But BT and FT, both of which are pioneering wireless VoIP over UMA, are increasingly looking at the year end before they can allow users to make calls over wifi.
BT can only offer calls over Bluetooth or cellular at present. The wifi part of the equation will be absent until the third quarter, when Motorola makes its wifi-enabled handset available.
FT/Orange meanwhile is anticipating Nokia will deliver its 6136 wifi-enabled handset to it during the second quarter.
Full story to follow
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