Monday, April 4, 2011
How to Never Pay a Hotel Phone Bill Again
The protocol is increasingly being adopted as the standard means by which computers communicate to facilitate VoIP or Voice Over Internet Protocol. So you can imagine SIP as a common language for new generation operators to speak to connect calls. However, there are no operators there is only your computer (or other hardware) and that of the person you are speaking with. That brings this introduction to some of the many benefits of SIP communication.
The goal of SIP was to provide users with many of the functions and features they typically expect with making phone calls, such as familiar rings, hearing the ring back tone when a call is placed, and the process of dialing a number. SIP goes beyond this however, also implementing a number of advanced features. Despite its’ convenient interface that mirrors that of a typical telephone call, SIP is based on an internet protocol rather than that of the telephone industry. Because of this, SIP is able to work seamlessly alongside other internet based protocols. This has allowed the technology to uniquely establish a user location, meaning that you can tell the IP address or “location” from which a person is making a call, something vital for offering emergency services. It also allows for coordination amongst the various participants in deciding upon what call features will be supported, as well as providing the protocol for call management which allows for adding, dropping, or transferring call participants.
One of the most exceptional benefits of Session Initiation Protocol (SIP) is its application with Private Branch Exchange (PBX). A private branch exchange is a private telephone network used within an enterprise in which users share a certain number of outside lines for external telephone calls. This provides a significant cost savings to the company because it allows companies to quickly and easily make calls within their institution, as well as save by limiting the number of external phone lines that must be maintained. SIP can extend these cost savings dramatically by offering users free long distance calls worldwide. Once again, because SIP is internet based rather than running over traditional telephone lines, the cost of call transmission are as cheap as say sending an e-mail, that is to say, Free! While PBX is already an efficient use of office resources incorporating SIP into a PBX means taking such savings and capabilities to a new level. Incorporating SIP gives users’ access to free interoffice communications, long distance calls, as well as huge savings in setup and transaction costs. These transaction cost savings are due to the fact that SIP is based on internet protocol allowing for the ability to physically move phones without any need for rewiring or new setup costs. Because that the system is peer-to-peer rather than cog and wheel like hardwired telephony means that there is no complicated setup necessary, but rather users can simply plug the phone into any available broadband connection and without the need for any complicated hardware or software, calls are ready to be made and received.
Visit: Computer Organization and Architecture (8th Edition) Stallings