Sol09 - CHAPTER 9 Using Telephone and Cable Networks...

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1 CHAPTER 9 Using Telephone and Cable Networks Solutions to Review Questions and Exercises Review Questions 1. The telephone network is made of three major components: local loops , trunks , and switching offices . 2. The telephone network has several levels of switching offices such as end offices , tandem offices , and regional offices . 3. A LATA is a small or large metropolitan area that according to the divestiture of 1984 was under the control of a single telephone-service provider. The services offered by the common carriers inside a LATA are called intra-LATA services. The services between LATAs are handled by interexchange carriers (IXCs). These car- riers, sometimes called long-distance companies, provide communication services between two customers in different LATAs. 4. Signaling System Seven (SS7) is the protocol used to provide signaling services in the telephone network. It is very similar to the five-layer Internet model. 5. Telephone companies provide two types of services: analog and digital . 6. Dial-up modems use part of the bandwidth of the local loop to transfer data. The latest dial-up modems use the V-series standards such as V.32 and V.32bis (9600 bps), V.34bis (28,800 or 33,600 bps), V.90 (56 kbps for downloading and 33.6 kbps for uploading), and V.92. (56 kbps for downloading and 48 kbps for upload-
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This homework help was uploaded on 04/18/2008 for the course JAVA CDA 4506 taught by Professor Eisler during the Spring '08 term at University of Central Florida.

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Sol09 - CHAPTER 9 Using Telephone and Cable Networks...

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