SIP IP phone is something used to make phone calls and video calls over the Internet. There can be many other uses to it, such as instant messaging, video conferences, and playing games. The SIP protocol was at first designed by two people, Mark Handley and Henning Schulzrinne starting in 1996. It is possible to run it on several transport layers, such as HTTP, UDP, TCP, and SCTP, which makes it very easy to run. It has since been approved as part of an internet-based media system on cell phone networks worldwide.
There are many varying alternatives to SIP IP phone. However, out of all of them, SIP still remains to be the leading protocol in internet based phone and multimedia service. An SIP phone could be on software, such as on Windows, and other operating system. Most commonly, an SIP phone is on hardware, looking the same as a regular cellular phone. The standard for receiving and sending text messages is also based on HTTP. There are many codes for determining a response or a request to send something.
It has since expanded since 1996, requiring more servers to handle the heavy load. It has become popular among many people who do not want to pay for regular cell phone service. Several communities of programmers work on developing code for the SIP protocol, making it better and more capable every day. Some software include SIP into the program, such as Google Talk, to make it in a way a soft-SIP phone.
To first start service, you must find an SIP-based carrier. A well known SIP IP carrier would be Skype, which offers many features and options. You will also have to grab an SIP software, there are many to choose from. Some of them on a PC are Twinkle, KPhone, Exiga, and SIP Communicator, which is multi-platform. On a mobile phone, there is Fring for almost all major cellphone operating systems, such as Windows Mobile, and iPhone OS. Most SIP software is free and open-source for use, which makes it easy to customize them to your own needs.