IP telephony refers to telephone communication over TCP/IP networks. IP telephony supports voice communication, voice and video mail, and video on demand. IP telephony also enables voice and video conferencing over the internet and existing IP-based LANs and WANs. “Lynx Phone” a newly formed IP TSP has been providing services since 2011. We have already been associated with all mobile operators in Bangladesh, and also with roaming operators. We are also providing related services like IP PBX setup and consultancy.