Mạng và viễn thông P45

Corporate NetworksAlthough large multi-national companies can afford to employ specialist ‘telecommunications managers’, smaller companies individuals and are less privileged. For these latter groups, telecommunications are often just another subsidiary responsibility either a computer services for manager or even the general business manager. Nonetheless all telecommunications managers can affectthewayinwhichtheircompaniesoperate.Inthischapterweshalldiscusshow.
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Mạng và viễn thông P45 Networks and Telecommunications: Design and Operation, Second Edition. Martin P. Clark Copyright © 1991, 1997 John Wiley & Sons Ltd ISBNs: 0-471-97346-7 (Hardback); 0-470-84158-3 (Electronic) 45 Corporate Networks Although large multi-national companies can afford to employ specialist ‘telecommunications managers’,smallercompanies individuals and are less privileged. For theselatter groups, telecommunications are often just another subsidiary responsibility either a computer services for manager or even the general business manager. Nonetheless all telecommunications managers can affectthewayinwhichtheircompaniesoperate.Inthischapterweshalldiscusshow.The following topics are covered 0 telecommunicationsperformanceandmanagement 0 cabling for telephonesandcomputers 0 officecomputernetworking(LANs,etc.) 0 privatenetworkdesign and operation45.1 TELECOMMUNICATIONS MANAGEMENT The telecommunications manager should manage all aspects of telecommunications. He needs totake ownership of the full cost andfunctionalperformance of all information flows, by whatever means, throughout his company. The job should not consist only of designing and operating the company’s private networks. This loses sight ofthe‘strategichorizon’,theprofound effect that effective all-round commu- nication can have on a company’s operations. Telecommunications management involves the day-to-day operation and adminis- tration of resources, and it should include creative and strategic questioning. 0 What is our long term business goal? 0 What are the most important ‘information flows’ supporting it? 0 Why is ‘key’ information being carried on a particular medium? 0 What is the capability of new technology and how can it affect the core business processs to advantage? 815816 CORPORATE 0 Why should I maintain a private network rather than use public services? Which gives better ‘added value’? 0 Why are we spending so much money on paper mail? 0 Why are we using facsimile rather than electronic mail? 0 How can we gain competitive advantage? 0 How can we lock-in our customers using telecommunications? 0 Which are the right standards for me to use? 0 How will legal regulation affect me? 0 Above all, are our board and seniormanagementproperlyclued up about tele- communications? If not, is that not my fault? Good telecommunications management keeps a company using the right technologies, the right suppliers, the right control procedures and the right monitoring measures, maintaining optimum performance at all points in time. From the suppliersthere is agreaterneedforproductswhichencompasswhole business solutions, tailored packages of services, products and support from a single supplier to meet the need of a business process neatly completely. No longer has the and telecommunications manager got the timeto bind together a rag-bagof bits, essentially the solution himself. Neither can he afford the time needed to resolve any subsequent problems or take on any necessary enhancements. What he has to do is to identify the need, understandit completely and find suitable suppliers. Thus he seeks a communications solution for ‘order collection’, ‘customer payment’, ‘customer account management’, etc. Having found solutions to the business communication needs, a framework neededis forperformanceand overallcostmanagement.Wecoveredthisinsomedetail in Chapters 34 and 35. Finally, the manager may turnto the technology and to thedesign andoperation of networks.Theremainder of thechapter, discussessome of the important current issues facing telecommunications managers in this particular area of responsibility 0 building cabling 0 computer networking 0 privatenetworkdesignandoperation45.2 PREMISES CABLING SCHEMES Until the explosion in the number of office computer workstations in the early 1980s, buildings were designed and pre-wired with the needs only of electricity and telephone cabling in mind. However, the large number of personal computers, word processors, facsimile machines,mainframe computerterminals, printers and electronicmail terminals now in use means that the needs of data terminalcablingnowgenerally exceeds those of simple electricity and telephone.PREMISES CABLING SCHEMES 817 At first, companies installed dedicated wires for each terminal as they were ...