A SIP phone system, also known as a SIP PBX, is a private branch exchange (PBX) that uses the Session Initiation Protocol (SIP) to manage and control voice calls over an IP network. SIP is a signaling protocol that is used to establish, maintain, and terminate voice calls over the internet. SIP phone systems offer a number of benefits over traditional phone systems, including lower costs, increased flexibility, and improved features.
SIP phone systems are becoming increasingly popular as businesses look for ways to reduce costs and improve their communications. SIP phone systems can be used to connect to a variety of devices, including traditional telephones, IP phones, and softphones. This flexibility allows businesses to customize their phone system to meet their specific needs. SIP phone systems also offer a number of features that are not available on traditional phone systems, such as call forwarding, voicemail, and auto attendant.