Inter-Asterisk eXchange (IAX) is a communication protocol used to initiate user sessions, similar to an SIP, in order to transmit and control streaming media, especially in Voice over Internet Protocol calls. IAX2 (the newest version) is a preferred method because of its flexibility, as it is compatible with a variety of codecs, and jitters and lag are minimal due to trunking and multiplexing, which means the amount of bandwidth and latency are also kept at minimal levels.
XCOM LLC (XCOM) is a new telecom operator, registered in US with offices in Sacramento, California and Moscow, Russia. Company was formed on the basis of few well experienced international operators providing millions minutes traffic per day.