RCA 4-Line corded telephone-Expandable to 16 base stations-Compatible with the RCA-25424RE1 and RCA-25425RE1, and also the GE-29487/88, GE-25403/404/405, RCA-25413/414/415, and the 25424/425 series-Speakerphone- Intercom (station to station)-Page all stations-Privacy button-Switchable data port-16 Programmable one-touch speed dials-Redial/flash/hold/mute/page-4-Line backlit LCD (no caller ID)-94# Name and number directory-Do not disturb-Line in use indicators-3-way conference-Headset jack and user button-Optional, dedicated DECT 6.0 cordless accessory handset can be added (1 per base)-Digital volume control-Call transfer-Trilingual menu display-8 Programmable ring tones-Hearing aid compatible-2 Year manufacturers warranty-Not compatible with the older GE four line phones-Not wall mountable-Silver with black trim-ACCESSORY HANDSET: RCA-H5401RE1-RCA25423RE1