Security Basics: Call cabins with VoIP

["Diego Garcia" <diegogarciamendoza () gmail com>]

Hi,

My name is Diego and i'm from Mexico City. I want some advice about
the best solution for Call Cabins with VoIP, cause i want to install
some cabins in several places in south of Mexico and Guatemala. I'll
use Satellital Internet in few cases cause there are in remote places
inside the jungle. But first i want to talk about which can be the
best solution for this.

I was thinking in voip phones connected to a router and all to a SIP
server, maybe with gizmo.com

Another solution is one PC with 4 USB ports connected to a USB phones
running 4 different VoIP clients like Gizmo or Skype (Maybe i need to
know better providers, if u can recommend me one I'm gonna thank a
lot).

Or another idea is about a Linksys PAP and some PSTN phones.

I hope anyone can help me decide what is the better solution for this.
Thanks in advance for reading this.

Best regards,
Diego García Mendoza

PS: Excuse my english :P