The only worldwide phone system I know is GSM.
Instant, portable, mobile communication, that connects to the worldwide phone system.
Phone Booth grossed $97,837,138 worldwide.
Most of the world uses the metric system for measurement.
one million
You can't, however there is a GPS tracking system that can be covertly installed into the vehicle. It costs about the same as a good stereo and works worldwide. You can find it at www.findvehicle.net
The International System of Units (SI) is the measurement system accepted worldwide. It is used by scientists, engineers, and most countries around the globe to promote consistency and standardization in measurements.
The cheapest solution is a GSM phone. A Satelite phone is another possibility but it's just more expensive. Ask your cell phone provider if they carry any phones that work worldwide. Most if not all will have a solution but it might be cheaper to find their solution - buy that phone online - and then have them activate it.
In a way yes, it is.
http://www.thesignaljammer.com/worldwide-portable-cell-phone-jammer.html
To convert a 1 line phone system into a 2 line phone system you will need a phone that has two input jacks and two separate phone lines coming into the building. Each phone line will be plugged into one of the input jacks and the phone will then be able to receive calls on either line.
About the NSA's system of eavesdropping on worldwide electronic messages.
form_title­= Phone System form_header= Find a phone system that fits your needs. How much does it cost to install the phone system?*= _ [50] Do I pay a monthly or weekly fee with this phone system?*= () Yes () No Can I have two lines set up with this phone system?*= () Yes () No