What You Should Know About Internet Communication Protocols

Internet Protocol is the most essential part of  low rate VoIP technology. Moreover this protocol is used for transferring fax, voice, SMS, as well as messaging applications delivered over the cyberspace. The data is converted into packets and then transferred over the Internet, hence waiving toll charges. That`s why VoIP calls are much cheaper as compared with those over PSTN. With ongoing upgrades and technical innovations in this sphere quality of VoIP can be comparable with landline phone system.

For ensuring call duration the PSTN system sets an isolated channel between two points. Copper wires carry analog voice signal through isolated circuits. When it comes to low cost VoIP, then packet-switched telephony come is put in the forefront. This system enables data packets to travel over the Internet and finds the recipient. Then packets are assembled and converted to voice, and the recipient is able to understand what you are talking about.  VoIP system can be integrated in the tradition PSTN system.  

Putting it in plainer words low cost VoIP technology is used to transfer the voice data over the digital network. This process involves the following steps: 

• Setting up signaling and media channel

• Digitalizing the analog voice signal

• Enciphering

• Packaging

• Transferring data packets over a network

 On the recipient`s end the above mentioned steps are involved in the reverse order

• Getting the data packets

• Deciphering the packets

• Converting digital signal into analog to generate original voice stream

To guarantee the security of data packets being delivered over the cyberspace and to avert any illegal or unauthorized access the information should be enciphered. Codecs are used to encipher the data before being transferred and then to decipher it at the recipient`s end. There is a large number of codecs and each of them requires different characteristics. 

When the codec has finished his work another protocol (RTP, or Real-time Transport Protocol) is used to transfer audio, video or voice streaming to its target recipient.