Session Initiated Protocol (SIP) is designed to connect different devices and applications to facilitate all different types of communication simultaneously, including video chats, phone calls, texts, email and instant messaging. SIP trunking connects the PBX of a user to a telephone network, sort of like a virtual phone line. Instead of transmitting information over an ISDN circuit, it sends information over a data network. This data can be the form of voice, text or even video. Both telephone line and ISDN connection can be used together to ensure constant and smooth communication.

The advantages of SIP trunking are numerous. SIP allows for the layering and cohesion of all of a user’s communication devices, from mobile phones to landlines to emails to texts. SIP trunking uses an existing connection and maximizes its efficiency, reducing the need for a monthly subscription to ISDN circuits. In addition, calls sent over the internet tend to be cheaper than calls over the telephone network, saving the user’s money. In addition, SIP trunking allows for many users to use the system simultaneously, rather than traditional circuits, which are limited to 30 users. This is especially beneficial for companies and business, including customer contact center.

SIP trunking also provides a backup system to maintain communication even if one of the connections go down. Successful businesses and individuals must be available and have smooth and timely communication. Thus, a system such as SIP trunking ensures that major players will never be out of the communication games, satisfying business partners and clients.