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Essay on Telecommunications Implementation at a Company

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Table of Content

Introduction 3
PBX and Centrex 4
Rotary and DTMF 6
WATS and Leased Lines 7
ISO and OSI 9
Conclusions 11
Reference List 12

Introduction

Networking and telephony is a part of our everyday environment, whether it be in our homes or in our place of business. We will somehow come into contact with one or the other in some shape or fashion. At Baker, we are no different from any other business. The infrastructure of Baker is not a simple pc and telephone setup. The network incorporates everything from a simple analog line to our data network backbone that is made of T-3 lines, ISND lines, and IPFR provided by the AT&T datacenter. Baker has 30 offices all over the country and a couple of offices in abroad …show more content…

Centrex systems do not require onsite switching equipment like the PBXs. They usually handle outgoing calls made from inside an organization without the use or intervention of an operator. In the case of my office, a trunk or outside path is grounded by the PBX or central office, which is why users have to dial an access code (a nine in our case) before they can make any outside calls. I am not sure, but I know we have over 10 trunks that go out from our office. "The difference between PBXs and Centrex is in the location and ownership of the equipment that routes calls. Private branch exchanges are located on customers' premises. Centrex is usually located at the telephone company and is part of the central exchange or central office" (Dodd, 1999, chp2).
Rotary and DTMF

Going a little further into our telephony phone system structure, Baker's telephones are all touch tone or tone dialing phones. Although the phones that are supplied to us have the ability to support pulse dialing for backward compatibility; I have not seen or know anyone that uses those features in today's business world. The old name for pulse phones were rotary phones, and the name for touch tone phones are dual tone multi-frequency phone, or DTMF. "Pulse dialing or loop disconnect dialing, also called Rotary or Decadic dialing in the United Kingdom,

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