All-IP is a global trend and the use of SIP (Session Initiation Protocol) trunking is growing rapidly. In countries such as Switzerland, the USA, the UK, Germany and many other European countries, the number of ISDN lines is decreasing. BT, KPN , France Télécom, Deutsche Telekom and Telecom Italia are major telco companies that stopped offering these lines as early as 2020. VoiP technology had a market value of 30 billion US dollars by 2020
SIP trunking offers a lot of advantages for companies that want to be on the cutting edge of technology. With SIP, individual call and extension numbers as well as entire blocks of numbers can be assigned. Winet offers porting of existing phone numbers - this is especially convenient for companies that want to remain reachable under their known number.