In Part 1 of our SIP primer, I covered the SIP foundation layers starting from the message structure and ending with the SIP transactions. We saw how phone registrations and proxies could work using ...

Voice over IP (VoIP) is the descriptor for the technology used to carry digitised voice over an IP data network. VoIP requires two classes of protocols: a signaling protocol such as SIP, H.323 or MGCP ...

VoIP or Voice over Internet Protocol is an innovation created to enhance our calling experience. Unlike the traditional land line calling, VoIP services offer free calling via the internet.

All too many voice-over-IP (VoIP) vendors want to sell you “complete solutions,” from the telephone on your desk and voice mail to the wide-area connectivity between your sites and to the public ...

Abu Dhabi The Telecom Regulation Authority (TRA) is on a sector liberalisation drive that may see the introduction of voice over internet protocol (VoIP) services by etisalat and du this year. Al ...

Nairobi — Following the article on Voice Over Internet Protocol a month ago, I have received many queries on how economically viable VoIP is. Today I highlight the economics of VoIP. Introduction of ...

In our last VoIP installment, we looked at the main reasons why SIP has become a widely adopted protocol, but we left details of the protocol’s inner workings fairly vague. This article will drill ...