Calisto 540 USB Deskphone

Brawny desk phone plus a brainy PC means big business communication benefits.



  • Plantronics

Recommended upgrade

    • Calisto 240
    • Calisto 240
    • Next-generation portable USB handset makes the evolution to PC communications simple

Still interested in Calisto 540? Read on...

Smooth the transition to PC communications with a familiar USB desk phone.

Phone functionality and PC communications
  • Familiar keypad design
  • Wideband for best PC audio telephony
  • Optimised for Microsoft® Office Communicator 2007 and Microsoft® Lync™ 2010
User-friendly features
  • Bright, backlit LCD display shows incoming caller ID, time and user’s online status/presence
  • One-touch audio management
  • Volume control and mute keys light up when activated
  • Speakerphone and headset port offer hands-free options
  • Headset port compatible with Plantronics H top headsets (with QD cable)


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