FW: [Asterisk-Users] WiFi / GSM VoIP Handsets..

[Steve Kennedy]

On Mon, May 22, 2006 at 08:14:19AM -0500, Eric ManxPower Wieling wrote:

> If you want to roam between GSM and WiFi while on a call, the GSM 
> carrier is going to have to support it.

There is a protocol for this (UMA), however few operators as yet support
it.

T-Mobile offer a webnwalk tarrif (unlimited data access for a fixed
monthly fee), but they are are going to (if not already) block VoIP
calls - they've realised that users are using VoIP (probably Skype) and
not making GSM voice calls - and the voice revenue is declining.


Steve

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