By Richard Downey
Here is a large, built-in view of present communications applied sciences on hand world-wide -- together with the net and net, electronic cellular telephony, ISDN, SMDS, body relay, and ATM -- from a realistic enterprise point of view. masking either deepest and public networks, the publication bargains a simple clarification of quite a lot of applied sciences and describes their underlying rules and contours, in addition to the standards that differentiate them. The consultant additionally showcases general purposes, exposes inherent barriers, explains pricing and strategies of comparability, and discusses defense pitfalls and safety platforms.
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Extra resources for Communications Technology Guide for Business (Artech House Telecommunications Library)
5 × 12 trunks = $5,760 worth of international calls over a single weekend via a 24-trunk PBX. 8 PBX Dimensioning The term dimensioning refers to calculating the correct amount of equipment required in a particular situation. The terms sizing, traffic engineering, and engineering refer to the same thing. 1 Number of Extensions The first question concerns the number of telephone instruments to be connected to the system. In many cases this will be a straightforward count of the number of employees at a particular location.
This is not possible in traditional paper-based filing systems. •Messages can be sent to colleagues, broadcast to all users, or broadcast to a particular group of users. •If an email system is in use, files can be attached to mail messages. This allows users to share documents, spreadsheets, or graphics on a needs basis without having to use floppy disks. •Workflow applications such as Lotus Notes make use of the above information-sharing possibilities to allow business processes to be more streamlined and structured.
During that hour there may have been times when no call was in progress and other times when two, three, or four calls were in progress simultaneously, but on average there was only one call. A CCS is a different unit of measurement for the same thing. One CCS implies 100 call seconds during an hour. There are 36 CCSs in an Erlang. PBXs must be dimensioned for operation during peak calling periods—the busy hours. Traffic should be measured at these times and, ideally, averaged over a period of weeks.
Communications Technology Guide for Business (Artech House Telecommunications Library) by Richard Downey