The modern communications have really evolved. Nowadays, people connect with their peers in other parts of the world through the Internet, which provide for faster and cheaper connection. Yes, because the Internet can facilitate for higher rate of connection, real-time interaction and cheaper costs, it is becoming a more popular venue where people can make calls, just like the way they used to do using land and mobile telephones.

Because the Internet is interactive, people can now see the faces of the people they are talking to, regardless of the geographical locations, using Web cams and online services.

Thus, the advent of Internet telephony and voice over Internet protocols has risen to become part of peoples’ daily lives.

The Internet telephony and the VoIP are referring to the transport or communication of telephone calls coursed through the Internet.

The SIP

The session initiation protocol, or more popularly known as SIP, is a kind of protocol developed to set a standard for modifying, initiating and terminating interactive and real-time user sessions using different multimedia like videos, virtual reality, online games, instant messaging and voice.

SIP was developed years ago, but it was only in November 2000 that the protocol was approved and accepted by the industry as a formal signalling protocol and as a permanent and regular element of the ‘next generation networks’ protocol.

To put it simply, SIP is the corresponding protocol intended and custom-made for VoIP and other multimedia sessions across the Internet. It is somehow similar to the standards used in widely popular online services and features like videos, online gaming and instant messaging.

Experts put it simply. SIP, according to them is somehow similar to the HTTP, which is the World Wide Web protocol. That is why through SIP, it can be noticed that messages contain headers and message bodies.

SIP provides the much needed facilitation protocol for voice over Internet protocol and Internet telephony. There are numerous valid reasons why SIP is deemed necessary in the transaction over VoIP and Internet telephony.

One, SIP can enable an outgoing call to reach the intended party wherever it is located in the world. That is because SIP has a user location and name translation feature. A detail of the nature of the particular phone call is also supported by SIP.

Second, SIP can allow the people involved in the call to reach a consensus or agree on a support feature that can recognize all parties, since not all are assumed to always have the same support levels.

Third, users are enabled to modify call characteristics during the entire course of a single call. For instance, a user is using a voice-only IP call. During the call, that user can modify the setting and transfer the call into a video function. A third party is also welcome to enter or join a call, and that party is also enabled to change call characteristics. Amazing, right?

Overall, the SIP makes up for one amazing and awesome Internet and VoIP calling experience. Today’s generation is so lucky to be able to enjoy all of these features, which in the past have only been part of dreams and fantasies.