SIP (Session Initiation Protocol) phones are a type of internet-based phone that uses the SIP protocol to initiate, manage, and terminate communication sessions. SIP phones work by using the same protocols that are used to establish connections for email, instant messaging, and video conferencing, making them an extremely versatile technology. SIP phones use VoIP (Voice over Internet Protocol) to transmit…

Voice over Internet Protocol (VoIP) is a method for transmitting voice communications over the Internet. Instead of using traditional telephone lines, VoIP converts audio into digital data that can be transmitted over the Internet. This allows for voice communication to be integrated with other forms of online communication, such as instant messaging and video conferencing. One of the main advantages…

Some of our customers have wireless analog phones that they want to continue to use. Even though they are using our internet phone service they do not want to use their mobile phone app to make and receive calls. They want to be able to be mobile within their office with their wireless analog phones. The way CIS supports this…

A SIP Trunk is a type of connection that allows a business or organization to use its existing IP-based private branch exchange (PBX) system to make and receive telephone calls using the Internet, rather than using traditional phone lines. SIP Trunks work by connecting a PBX to the Internet using a SIP-enabled router or gateway. The PBX then sends and…

SIP ALG (Application Layer Gateway) is a feature built into many routers that are designed to help with the configuration of SIP (Session Initiation Protocol) networks. The purpose of SIP ALG is to assist with the traversal of SIP traffic through a firewall or router by making changes to the headers of SIP messages. This can include opening and closing…

Session Initiation Protocol (SIP) is a widely used communications protocol for initiating, maintaining, modifying, and terminating real-time sessions that involve video, voice, messaging, and other communications between two or more endpoints on IP networks. SIP is typically used to establish and terminate voice and video calls, as well as to invite participants to conferences and to negotiate and modify call…

Hosted PBX (Private Branch Exchange) is a cost-effective and efficient solution for small to medium-sized businesses (SMBs) looking to improve their communication system. A hosted PBX is a cloud-based service that allows businesses to manage and route telephone calls through the Internet, rather than through traditional telephone lines. This means that businesses can have a professional and reliable phone system…