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 in Europe. I will be discussing the setup of the Houston office, since I am most familiar with this office.
PBX and Centrex
The Houston office of Baker is comprised of three types of phones, well, at least until the company moves into one central location. Currently there are three offices in Houston that are all a block apart. The building that I support houses an old Merlin Legend telephone system. It's funny, because I have to set the date on the voicemail to the year 1999 so that when users check their messages, it will give the correct month and date. The system is comprised of about 100 direct-inward dialed (DIDs), some used as analog and some use as digital lines. The digital lines are ISDN lines that allow for digital transmission of voice and data over ordinary telephone copper wires. Direct-inward dialing routes calls from the outside lines to the PBX, which allows telephone systems to bypass an operator. The PBX then routes the call to the desired extension an...
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... developers a better understanding of how to better design a network and works very well when they have to trouble shoot a problem. The end-users and specialized developers do not necessarily use the OSI model as a business tool to gain more clients, but they are indeed using the concept whenever they go out and market to clients about out hosting abilities.
Conclusions
With the internet and better means of communication being developed on a daily basis, there is going to be a constant change in the way data networks and telephony are today. We have gone from rotary dialed phones, which I can vaguely remember at my grandmother's house to voice recognition cell phones that dial the number for you. We have also went from some crazy number in the past for data travel, like 33 baud/s to what we are at today, reaching speeds that I can't imagine of over 12Mb/s.
Cisco Designs, manufactures, and sells Internet Protocol (IP) - based networking and other products related to the communications and information technology (IT) industry and provide services associated with these products and their use. The company provides products for transporting data, voice within buildings, across campuses and globally. The products are utilized at enterprise businesses, public institutions, telecommunications companies and other service providers, commercial businesses, and personal residences. Cisco conducts its business globally and manages its business geographically. Its business is divided into the following three geographic segments: The Americans; Europe, M...
With these business telephone systems Small businesses can enjoy all the functionality like call forwarding, voicemail and ringing line indication. Customers are always sure to be connected to a live person instead of wasting time with a complicated automated service.
VOIP what are the advantages of having the system. Cost savings, cost reduction, phone portability, Service mobility and integration with other applications. The cost saving is extremely less expensive than the old Private Branch Exchange (PBX). There are no charges for long distance calls and online directories. The company saves money on equipment, lines and manpower. The local service providers provide an assortment of services. The VOIP system supports email, instant messages, video conference calls and sending images. VOIP will run the regular systems like phone and fax. Today’s world is full of on the go technology. Phones can go anywhere as long as they have an IP connection. IP phones have the same numbers and go anywhere in the world. Service is available almost everywhere for the IP phones. This makes the office mobile. The call features and the voicemail access to the security features and service policies. The VOIP is part of a larger trend toward converged communications. Emailing systems along with web browsers are what the new generations live on. The social-networking crowd loves the systems. VOIP makes this all possible. The data networks are becoming increasingly reliable and high-speed networks.
Telecommunications gained mainstream attention in the early 90’s; however the initial key market was business men and women, who used their phones whilst being on the move and so allowing them to communicate with their companies with ease. Though in the modern era, telecommunication went through segmentation in the market trends, and now in this day and age it would be difficult to find someone who does not own some form of mobile technology. Many phone providers battle to provide the best service for their customers (Figure 1).
Leland, Eric (October 18, 2001). Voice Over IP. Is your telephone system outdated? [Electronic version]. TechSoup. Retrieved on May 20, 2004, from http://www.techsoup.org/howto/articlepage.cfm?ArticleId=334&topicid=5
I was the last among my group of friends to get high-speed internet. Thinking about the dial-up days brings me mental pain. Now, I seek to always be in front of the technological curve.
The phone system at AMS is what I would consider as your average phone and paging system. All of the phones have their own extension that can either be dialed as an extension or used as the last four numbers of the phone number. Within the network only the extension needs to be dialed with no previous number keying. I find this pretty handy when needing to contact other individuals within the company. Also, the equipment we test has multiple types of modems. Some of the baud rates we run them at are ranging everywhere from 8400 to 33600.
Within a few years, there will be well over a billion mobile phone users worldwide and the majority of mobile phones will be connected to the Internet.
With all of the possible topologies there are so many different kinds of configurations possible. The capabilities of modern day topologies ensure that global data transfer to phone calls are all possible through physical and logical means at every level.
Berean¡¦s existing network infrastructure is wire line, and uses a T1. Remote users access the network through a dial-up modem pool. Berean¡¦s wire line network model severely limits the accessibility and effectiveness of the Berean network. For example, employees in Berean facilities are unable to access the network easily from meetings, the cafeteria, or anywhere other than their offices. In addition, the effectiveness of remote users is limited by the slow speed of present-day dial-up modem connections.
It has become extremely difficult to segment voice and data traffic services and revenues in the U.S. market. Voice traffic has historically always represented the bulk of the traffic and revenues in the telecommunications market; however, recent estimates are that voice traffic is growing at a very low (single-digit) percentage rate, while data traffic may be growing at a rate as high as 200% to 300% per year.
...creasingly used to purchase data bundles and data services are increasingly used for VOIP calls and SMSs are being replaced with free instant-messaging services.
My mobile phone network coverage allows me to make a call wherever I want, and the call is never cut off by the network. Independent surveys show that it has the best signal quality with excellent call clarity. The network covers 99 percent of the population, and it has installed more transmitters than any other digital network company. They guarantee that they work the best; in fact, they will even add a free minute of talk time if the call is ever lost. International and off-peak calls are the cheapest in the area. The company has been voted number 1 in customer satisfaction for 5 years in a row.
Making a telephone call no longer should conjure up visions of operators connecting cables by hand or even of electrical signals causing relays to click into place and effect connections during dialing. The telephone system now is just a multilevel computer network with software switches in the network nodes to route calls get through much more quickly and reliably than they did in the past. A disadvantage is the potential for dramatic and widespread failures; for as has happened.
LG Electronics Korean Consumer Electronics & Home Appliance Manufacturer has started mobile appliance business since 1996. Currently LG MC Company produce CDMA, GSM, WCDMA products and recent success of design based phone concept series Black Label Series boosted its revenue since