If you have your own business that requires a combination of telecom products, it might be in your best interest to invest in a Voice/Data Line Sharing Device. This port-switching mechanism will allow you to run telephones, fax machines, modems, answering machines, climate control, security monitoring, credit card terminals and poll cash registers without needing a separate line for each.
Finally two-way radios, commonly referred to as "Walkie-Talkies", are yet another device that falls into the category of telecom products. And yes, just like all of the other products we've covered, the price and size have dropped while the technology expanded. In fact, there are two-way radios that can communicate with each other from as far away as 6 miles depending on the area and terrain. Multiple units that run on the same frequency work quite well for large fleets after they are cloned for synchronization. LCD screens make for some easy programming by all.
connections and reliability of data transfer to the application layer, which is concerned with providing a particular functionality using the network and with the interface to the user.
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Both technology (equipment and software) suppliers and service providers tend to specialize in one or two of these layers, each of which seeks to serve all applications and all media. As a consequence, creating a new application may require the participation and cooperation of a set of complementary layered capabilities. This structure results in a horizontal industry structure, quite distinct from the vertically integrated industry structure of the Bell System era.
All these changes suggest a new definition of telecommunications: Telecommunications is the suite of technologies, devices, equipment, facilities, networks, and applications that support communication at a distance.
The range of telecommunications applications is broad and includes telephony and video conferencing, facsimile, broadcast and interactive television, instant messaging, e-mail, distributed collaboration, a host of Web- and Internet-based communication, and data transmission.3 Of course many if not most software applications communicate across the network in some fashion, even if it is for almost incidental purposes such as connecting to a license server or downloading updates. Deciding what is and is not telecommunications is always a judgment call. Applications of information technology range from those involving almost no communication at all (word processing) to simple voice communications (telephony in its purest and simplest form), with many gradations in between.
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