is the latest enhanced business VoIP phone of VOPTech, based on SIP/IAX2 protocol. With sleek and elegant design, large high resolution graphic backlit LCD, RJ9 headset jacks, 4 SIP-line keys, 8 programmable keys with Led, 4 dynamic content-sensitive soft keys, a 5-position navigation key, including keys for voice mail, call transfer, call hold, mute, volume control, plus an excellent full-duplex speakerphone with advanced acoustic echo cancellation, make the IP40 a full-feature and high quality VoIP phone for enhancing office efficiency. Using next generation chipset the IP40 offers unrivalled superb HD Voice Quality, innovative functional richness, friendly user interface, stylish and elegant design. It is definitely able to provide a pleasant and satisfactory end-user experience.