SIP telephony, also known as VoIP (Voice over Internet Protocol), is a technology that allows users to make and receive phone calls over the internet. SIP (Session Initiation Protocol) is a signaling protocol that establishes, modifies, and terminates real-time sessions, including voice, video, and data communications.
SIP telephony offers several benefits over traditional phone systems, including cost savings, flexibility, and scalability. SIP trunks are typically less expensive than traditional phone lines, and they can be easily scaled to meet changing business needs. SIP telephony also provides a range of features that are not available with traditional phone systems, such as call forwarding, voicemail, and auto-attendant.