PBX: Reinvented for Built for remote working Cloud or on-premise Easy to install and manage Secure, reliable, flexible The 3CX Web Client. Your Communications Hub. Wouldn’t it be great if you could handle your calls, check colleagues’ status, answer messages and video call, all from one central location? With the 3CX web client you can do all that and more. Whether you are in the office, at home or on the road, using the 3CX web client will greatly reduce costs and admin headaches. All you need is your web browser! Take your office with you. Full desk phone replacement, from your web browser. Click to call any number on a web page or CRM package. Instant video conferencing. Clients join app-free in their browser. Live chat with website visitors & Facebook users, in real-time.