I must confess that I've not seen the point about rigging up a PC as a software-driven PBX using Asterisk software. Until now.
It seems that the Gizmo5 (aka Sipphone) service has peering arrangements in place with a stack of VOIP networks around the world.
And, according to IP PBX portal Nerd Vittles (what a name! -Ed) there is a technique for getting free calls on a number of the world's phone networks.
Addressable networks reportedly include Alltel, Cablevision Lightpath, Cincinnati Bell Wireless, Comcast, Cox, RCN, Sprint PCS, T-Mobile and Verizon Wireless to mention but a few.
The technique hinges on a technology known as backdoor dialling - you dial 0101 and then the 10-digit number of your choice to see if a free call will connect.
Be warned, it's teckie, but the techniques works.
Allegedly your honour...
Posted by Steve Gold on 29 August, 2008From his base in Sheffield, England, Steve has been a journalist for far too long for his own good - actually, he's been a business journo/tech writer for 24 years, 20 of them full-time. He has specialised in IT security, business matters, the Internet and communications for most of that time.
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