Business are using many collaboration solution like MS-Team, Cisco Webex, google meet and may others.
The Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, and terminating real-time sessions that include voice, video and messaging applications. SIP is used for signaling and controlling multimedia communication sessions in applications of Internet telephony for voice and video calls, in private IP telephone systems, in instant messaging over Internet Protocol (IP) networks as well as mobile phone calling
over LTE (VoLTE). On the side, SIP is a business voice technology that offers greater flexibility, great call quality and the ability to adopt a unified communications strategy without breaking the budget.
Business are using many collaboration solution like MS-Team, Cisco Webex, google meet and may others. SIP integration allow business users not to have always in the internet to receive a call in their office connectivity solution (for example MS-Team). This facility increase business productivity work from anywhere.