A SIP phone is an electronic telephone that utilizes the Open System ‐ Taste‒ to manage and set up telephone calls over a network. A SIP telephone or SIP phone is a telephone with an additional feature, the ability to make international phone calls using a special IP-based protocol. The IP protocol or IP telephony enables a user to make and receive calls using an Internet Protocol address.
SIP phone systems are generally used in business environment and for corporate communications. The primary use of SIP telephony is for corporate conferencing and for making international phone calls at the same time.
It is necessary for SIP to be supported by a high-speed Internet connection. The Internet connection is usually provided by a private LAN network. Most of the time, a local area network (LAN) is configured with a router and a modem which enable SIP to connect to the Internet.
SIP services are usually provided by a company who offers VOIP services. There are different types of VOIP services. The main difference between them is the SIP protocol. There is no standardization over the features of VoIP systems and they have many different kinds of features such as call forwarding, voice mail, conference calling and much more. Each type of VoIP provides different features and functions.
When a person is connected to a high speed Internet connection, he can use the SIP protocol and his computer to access the Internet. Once connected to the Internet, the person can make a call by entering the phone number of the other person in the SIP phone dialer or dialing the extension of the person through which the call will be made.
VoIP also comes with SIP phones that are designed to make it easier for people to make calls using their computer and internet connection. In the SIP phones, there is no separate SIP server that needs to be maintained. The call making process is managed by the SIP service provider that acts as the gateway to the outside world. The SIP service provider provides the data that is required for the call making process.
The Internet protocol can be accessed using a SIP phone on the Internet. SIP phones that make use of the internet protocol can have various kinds of features depending on the kind of phone they are. A SIP phone that supports the internet protocol can support voice over IP or VoIP. services.
A SIP phone that can support both the internet protocol and VoIP can be called as “both”. A VoIP phone that supports the internet protocol can be called as “VoIP only” or as “VoIP and internet phone“.
When you make a call over the internet to a landline number, the call will be converted into a voice packet. The conversion happens by the PSTN or ‘Public Switched Telephone Network’ which connects all the landline numbers to a central switch or switches. There will then be a series of lines that carry the voice packets from the telephone switch to the Internet.
The calls that are made through a SIP phone on the Internet are not actually made to any particular person. The voice packets are forwarded to the SIP service provider so they can be converted into a voice packet for transmission to the external Internet.
SIP phone systems do not need any hardware that can be used. Is it an office phone or a home phone, SIP can be used. on a desktop or laptop computer with an internet connection.
This is very useful when you want to make international calls using your office phone number. In most cases, people would prefer to have international calls using their cellular phones.