I have used a resident s/w program that does the same. But this seems
easier to sell since you do not need a smartphone.
Another issue is if you set it to call thru a specific number how does
it handle roaming?
Moshe
Michael Wen wrote:
> This SIM Dailer could overcome the inconvenience of cellular CallBack system:
> http://www.tangshop.com/sim-dailer-adapter-smart-card-gsm-phones-callback-calling-card.html
>
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