A Session Initiation Protocol (SIP) phone is a type of VoIP (Voice over Internet Protocol) phone that uses SIP to establish and manage voice calls over an IP network. SIP phones can be either hardware-based or software-based.
There are many benefits to using SIP phones, including cost savings, increased flexibility, and improved features. SIP phones are typically much cheaper than traditional landline phones, and they can be used anywhere there is an internet connection. SIP phones also offer a wide range of features, such as call forwarding, voicemail, and caller ID.