IP telephony
Telephony over an IP network involves the transmission of voice over an Internet protocol. There are several names in use for IP telephony, most often VoIP - Voice over Internet Protocol (voice over Internet Protocol). In practice, we also come across the terms SIP (Session Initiation Protocol), less often SCCP (Skinny Client Control Protocol), which are actually protocols for VoIP. SIP uses the lens, SCCP uses the Skype network.
VoIP began to be used at the beginning of the 21st century, modestly replacing old robust and impractical telephone exchanges in companies. A special advantage is that it uses the same network as computers, so that a computer network and telephony are installed on the same infrastructure. By reducing the cost of simpler systems, even smaller companies could easily set up their own network.
However, the real savings are achieved by connecting several local networks, which makes extremely cheap long-distance and international calls. Companies connect their work units via the Internet, bypassing the expensive services of telephone companies.
This is possible thanks to the fact that the voice is converted into IP packets, which travel through the local or public network, come to the device of another user, where the digital signal is converted into voice. Interlocutors can use special IP phones, but it is enough to have a computer with headphones and a microphone. It is possible to use an ordinary mobile phone, as well as a smartphone. It is enough to connect somewhere on the Internet and the user will have access to telephony as if he were in his office. Call forwarding can be operated in all directions, making the local network part of the global network. Conference calls are a special advantage, which enables more interlocutors to participate in the same conversation.
Bridgetech has the knowledge and experience to implement a variety of telephone systems, from open source solutions to branded systems.