With Poly CCX 500 Series business phones you can feel confident you sound professional on every call. And with Poly signature audio, Poly HD Voice and Acoustic Clarity technologies, you know you will hear and be heard on your calls. The CCX 500 Series supercharges collaboration with its easy to use, touchscreen interface and ergonomic design. The simple touch-access to contacts, meetings and voicemails keeps your users day moving, boosting productivity. Simply intuitiveBy design, the Poly CCX 500 Series business media phones are simple and intuitive to usewith one-touch-access to your contacts and meetings. So, users can get right to work. Design Product colour Black Handset type Wired handset Product type IP Phone Phone features Caller ID Yes Lines quantity 24 lines Display Touchscreen Yes Aspect ratio 16:9 Display resolution 720 x 1280 pixels Display diagonal 12.7 cm (5") Display LCD Audio Voice codecs G.711alaw, G.711ulaw, G.722, G.729ab, OPUS, iLBC Speakerphone Yes Network Blue