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.
AN AMERICAN,Uk,CANADA, CARRIER LICENSED BASED BANGLADESHI VOIP WHOLESALE AND DIALER BASED SERVICE PROVIDER.WE PROVIDE A2Z CALL TERMINATION.
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