Here is a great introduction to a practical application of electromagnetic theory—the field telephone. It’s a training film from 1961 that covers the sound-powered, local battery, and common battery ...

The basic concept is a virtual telephony solution offering advanced features typically associated with a PBX, delivered as a service. 2) Cloud Applications Using the cloud to solve for specific ...

and would launch them in Tamil Nadu, Karnataka, Delhi and Gujarat this year. provider to launch its services in Karnataka. Tata Teleservices will invest Rs 1000 crore in the next six years in the ...

A telephone is a device designed to conduct simultaneous transmission and reception of voice over a network. It is the most widely used telecommunications medium in the world since 1876. Since its ...

Today, we’d like to get back to a few basics about the relationship between the public-switched telephone network and voice over IP. The PSTN includes a signaling system, a series of central offices ...

As a Linux Journal reader, you've probably stumbled across Google Android here and there. You've probably read an introductory article or maybe you even downloaded an ...

CHENNAI: Chennai is on the threshold of a major telecom battle as Bharti is all set to unleash its basic telephony services. chennai: chennai is on the threshold of a major telecom battle as bharti is ...