Home / PLX Phones and Speakerphones View cart “Plantronics Calisto 240 USB Handset” has been added to your cart. Showing all 2 results Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Plantronics Calisto 240 USB Handset $137.50 Add to cart Plantronics Calisto 240-M USB Handset – Microsoft Lync $137.50 Add to cart