Some Basic VoIP Protocols

Some Basic VoIP Protocols
The main transport layer protocols are TCP (Transmission Control Protocol), UDP (User Datagram Protocol), RTP (Real-time Transport Protocol). Directly in IP-telephony, UDP and RTP protocols are used, and their main difference from TCP is that they do not provide reliable data delivery. This is a more acceptable option than the delivery control (TCP), since telephone ...

Connecting PSTN and VoIP

Connecting PSTN and VoIP
External calls in the PBX are made through public telephone lines (analog or digital PSTN lines) or by the connections to VoIP providers (VoIP lines). In the classical PBX, PSTN lines are connected directly to the PBX unit through the connectors. However, in the 3CX Phone System, various connection options are possible: The connection of ...

VoIP Businesses – how to start a VIP business

VoIP Businesses – how to start a VIP business
At the moment VoIP-telephony is one of the most actively developing business directions in the world. Telecommunication services provided by VoIP providers are much better in quality and available capabilities than traditional telephone companies, which makes them competitive¬†to each other not only on cal, but also in international telecommunications markets. This article will discuss the ...