Panasonic KX-T7730 central phone, a phone designed to work with Panasonic PBX systems, not a regular home phone. Key Specifications: * Single-line LCD screen (16 characters). * 12 programmable buttons with LED indicators. * Speakerphone for hands-free conversations. * Caller ID and name display support (requires PBX and service support). * Dedicated buttons for Transfer, Hold, and Conference. * Redial button. * Message and audible alert button. * Call Forwarding and Do Not Disturb feature. * Handset and ringer volume control. * 2.5mm headset jack. * Operates via the PBX and does not require a separate power adapter. Compatible Systems: Works with many Panasonic PBX systems such as: * KX-TA * KX-TES824 * KX-TEM824 * And some KX-TDA and KX-TDE systems equipped with suitable Hybrid cards. Uses: This phone is suitable for offices and businesses, and allows for: * Calling between internal extensions. * Call transferring. * Receiving multiple lines. * Programming buttons for speed dial or accessing PBX functions.