The Cisco 7800 series telephones are fully equipped business telephones with encryption, HD voice quality, high-resolution, large SIP-based display. They can be height-adjusted in two positions and offer direct keys for the most important operating functions (hold, conference, forward, voicemail, directory, hands-free, headset and mute). The other functions can be easily accessed via soft keys. All telephones can be attached to the wall and have a replaceable cover plate so that they can be visually adapted to the office environment.