隨著VoIP技術的成熟與寬頻的發展，使得透過網路講電話成為可能，再加上能串連企業各分公司據點，不但享有節費，還能便於管理，其效益既明顯又快速，於是，網路電話（VoIP；Voice over IP）遂成為企業重要的語音節費工具，各大企業無不紛紛引進。根據資策會MIC調查顯示，全球企業網路電話VoIP市場，預計在2011年達到155億美元的規模，其中，設備市場將達110億美元；至於台灣企業VoIP設備總體產值預估至2012年，則可望達到11.72億美元，創造高產值的主要原因，則包括中小企業導入VoIP比例提高、企業對語音及視訊會議的需求增加等。
企業建置VoIP最大的目的就是要降低營運費用，強化競爭力。對使用者而言，要把現有話務品質、方便性、成熟度、穩定度俱佳的PSTN電話系統改為陌生的VoIP系統，員工會有所疑慮，甚至不會同意而且會抗拒，從科技接受模型(TAM)而言，更不具備易用性，若單純以MIS規劃的觀點向員工說：『我們要將網路資源充分整合、導入一套VOIP節費系統，可以有效降低通訊成本』，使用者可能聽不進去，且當使用者與MIS的看法不一致時，更會造成導入成效不佳或是大家不要用、不想用，管理人員在面對這種問題時應該想辦法去解決它，而不是冷酷地說『這是公司的政策，只要讓大家習慣了，自然而然就好了』。
本研究主要是以變革管理理論為研究基礎，綜合整理眾學者專家對導入資訊系統的關鍵成功因素後，藉由網路電話的技術特質，透過個案公司實際建置、推展的過程，從管理者的角度去思考，這些建置、使用過程中，使用者如何願意去接受，而非要不要接受，並歸納與發現個案公司在建置VoIP系統時如何規劃？如何推動？面臨哪些問題？及相關的策略運用等，以提供其他企業導入時之參考。

The mature VoIP technology and the progress of broadband network make it possible to talk on the phone via the Internet and link all the business branches together. as well not only to save the cost but also to control and manage the company with ease. That results both obvious and rapid benefit. Consequently, VoIP (Voice over IP; VoIP) has become an important means for saving the call tolls and more and more enterprises have brought in the appliance. According to MIC survey, the global industry VoIP market expects to achieve 15.5 billion till 2011, including the equipment market will make 11 billion U.S. dollars. As to Taiwan market, the overall production value of VoIP equipments forecasts 1.172 billion U.S. dollars in 2012; the main reasons for the high value include increasing VoIP applications and more and more need for enterprise video conference.
The enterprise uses the VoIP technology purposes to reduce operation cost and strengthen competence. For some staffs, they would wonder and even disagree and refuse to accept the change from existing good call quality, convenient, mature and stable PSTN phone systems to odd VoIP systems. Upon the Technology Acceptance Model (TAM), it is no so ease to use the new systems. If you explain the system changed simply at point of the MIS as 『we have to integrate our network resources fully into a set of VoIP saving cost system that can efficiently lower communication costs』 , the users may not listen to. Besides, when the users are inconsistent with the views of MIS, the poor performance will result rejecting in utilization. At this time, the managers should seek out ways to solve it rather than declare grimly that this is company policy and everyone has to get used to it.
This study is based on changing management theory and consolidates much research information from various scholars and experts about how the enterprises settle down and proceed the new system by the technical characteristics of VoIP. We want to introduce how to have the users willing to accept it at the manager point of view during the procedure of building and executing, not yes or no to accept it. This study also combines the successful cases how the enterprises build and plan VoIP systems -- how to promote? what kind of problems? and the related strategy for other companies’ reference.

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三、參考網站：
1.資策會MIC：http://mic.iii.org.tw/aisp/
2.昱源科技網站 ：http://www.vodtel.com.tw/
3.Digitimes：http://www.digitimes.com.tw
4.個案公司網站：http://www.sym-motor.com.tw