The 420HD has dual 10/100 Ethernet ports, RJ9 Headset support, and a graphical LCD display (128x48). The AudioCodes Skype for Business (SFB) 420HD IP-Phone is a 2-line entry-level VoIP phone ideal for enterprise telephony and call centers. It basically works by transmitting data (voice signals) over the internet to the recipient. Softphones, also called dialers, are phones designed to work with VoIP, allowing you to make calls through the internet.
Frequently Asked Questions How does softphone work?
