Phone to Phone
It is a type of communication between two ordinary phones, which are connected and voice transmits over telecommunication network.
SIP protocol was made within IETF (Internet Engineering Task Force) – organization occupied with establishing Internet standards and general standards concerning TCP/IP protocols.
Flickonnect
IP2IP,PC2Phone, Mobile Dialer,Free Re-sellers Panels (VSR), ATA/Linksys configurations for Call Shops and IP-Phones compatibility for Tele-centers
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