1. Telecom Management A provider of services is also generically called a carrier or service provider. The user can be an individual or a company. A user purchases telecom service from a carrier/service provider. The varieties of carriers include: Wireline telephone companies Cellular Carriers PCS carriers Cable television companies Satellite Carriers Internet Service Providers

2. Telecom Management Wireline Telephone. A wireline carrier is your telephone company, both local and long distance. The wireline carrier is any carrier that is NOT a wireless carrier. The wireline carrier classification also covers the PSTN.

3. Telecom Management Cellular Carrier The term wireless carrier typically refers to Cellular and PCS carriers. As far as consumer market is concerned, the only difference is that both provide digital and analog service. Wireless also includes Paging companies LMDS, LMCS and satellite companies Local Multipoint distribution companies and Local Multipoint Communication Service which are Wireless Local Loop technology businesses. These carriers operate at 24 GHz – 34 GHz.

4. Telecom Management PCS This term originally envisioned a broad range of services designed to allow people to access the PSTN regardless of their physical location. Today it is considers being cellular or better than Cellular. For a technical perspective, the PCS operates in a frequency band different from that of the cellular carrier i.e. In Europe the PCS operates in the 19OO – 199O MHz band. PCS was also envisioned to combine the many emerging Intelligent Networks of public networks with sophisticated wireless access and radio network mobility

5. Telecom Management Paging System. Usually considered to be the “low end” of mobile communications. Its less expensive than other mobile communication system because it is a one-way system. The paging receiver alerts the user to a call but does not verify or respond in anyway to the base station. Compared to Cellular and PCS paging systems need far less transmitters.

6. Telecom Management Satellite communication is the result of work in radio field with the objective if achieving the greatest coverage and capacity at the lowest cost. Satellite systems can be broken into two parts. 1.Space portion:This includes the satellite and the means to launch it. 2.Earth portion:This includes earth transmitters and receivers stations Unlike earth-based communication system, satellite communications system require support in a number of non-communication related areas, such as rocket launchers, power supply in outer space, orbital propulsion motors, and more.

7. Telecom Management Cable Television network The CATV acronym actually stands for community access television, but CATV has become associated with the term cable TV. Cable network are currently designed to transmit multiple conventional analog television signals to multiple subscriber locations. This is one-way system for distributing the same set of signals to each subscriber location. The advent of new types of equipment that allow televisions to act as both TV and a computer terminal will eventually convert the cable TV network into broadband multimedia, and internet connection.