[asterisk-users] Hardphone SIP phone costs

[Ira]

At 09:27 AM 3/21/2008, you wrote:
>If you're on call using SIP/WiFi, it's up to SIP server to dial a 
>new call to your mobile number and blind transfert previous call to it.
>Maybe some dual band phones are able to automatically accept some 
>incoming GSM calls, put them in 3-way conference (of some kind) and 
>wait for SIP server to end WiFi call without asking anything to user.
>Parts of this puzzle are here but integration should be rather hard.

T-mobile has a service in the USA for a few of their phones that will 
seamlessly move between WIFI and GSM. You pay based on where the call 
starts, if it starts GSM you pay for the minutes, if it starts WIFI, 
the call does not count against your minutes. But it's proprietary 
and costs $10/month.

Ira