Missed Call Notification
The service allows you finding out who has called you, when the telephone line was busy, switched off or was outside the zone of coverage. By doing so, it ensures that an important call will not be missed.
SIP protocol was made within IETF (Internet Engineering Task Force) – organization occupied with establishing Internet standards and general standards concerning TCP/IP protocols.
Voice.sky Communications
VOICE.SKY Communications is a facilities-based carrier with domestic and global points of presence in New York, London, Atlanta, Chicago, Miami, Los Angeles, Boston, Dallas, and Hong Kong that serves carriers and service providers including PTTs, Wireless
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