A softphone is a software program for making telephone calls over the Internet using a general purpose computer, rather than using dedicated hardware. Often a softphone is designed to behave like a traditional telephone, sometimes appearing as an image of a phone, with a display panel and buttons with which the user can interact.

A typical application of a softphone is to make calls via an Internet telephony service provider to other softphones or to telephones.

To communicate, both end-points must have the same communication protocol and at least one common audio codec. Most service providers use a communication protocol called SIP (Session Initiation Protocol).

Minimum System Requirement:

Processor                      :   Intel Pentium III 700 MHz
Memory                         :   256 MB RAM
Hard Disk Space         :     30 MB
Operating System      :   Windows 2000/XP
Internet Connection :   Leased Line,Broadband,Wireless
Sound Adapter            :   Full-duplex, 16-bit

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