A SIP softphone client is a software application that allows users to make and receive phone calls over the internet. SIP (Session Initiation Protocol) is a signaling protocol that is used to establish, maintain, and terminate multimedia sessions. SIP softphone clients can be used on a variety of devices, including computers, smartphones, and tablets.
SIP softphone clients offer a number of benefits over traditional landline phones. They are typically more affordable, they can be used from anywhere with an internet connection, and they offer a wider range of features. For example, SIP softphone clients can be used to make video calls, send instant messages, and share files.