This is a device allowing a user to make VoIP calls using session initiation protocol (SIP). SIP is a telecommunication technology developed as a fast, easy standard for delivering IP-based data, voice, and video communications.
VoIP Terminations and Hosted VoIP Switch Partition : VoIP Reselller, VoIP Callshop, VoIP Calling Cards, VoIP Callback, VoIP PC-To-Phone, VoIP Device-To-Phone, DID, E-Commerce, etc.
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