Originally Posted by
PTravel
That get's you the free phone service. However, it doesn't get you all the PBX features. Incidentally, I use an Obi device to link my cellphone to my system so that, when I'm at home, calls to my cellphones ring on my home phones.
You could just signup for VoIP.MS Sip service. Their primary business is SIP/IAX Trunking, but because they run Asterisk (with a custom front end), all the power of the IVR, Call Queue, Faxing is included in the service. (You're just paying for the time on the call). You can then tie it into your choice of softphone on the PC or cell phone.
The Web UI isn't pretty, but if you were going to hack together your own PBX, you can figure out their UI.
I *don't* work for the company, nor have vested interest, but I've used their service for many years in the past and been quite pleased.