RCA 25423RE1 ViSYS 25423RE1 Four-Line Phone RCA25423RE1 RCA 25423RE1, Get the convenience and flexibility of a custom phone system for an off-the-shelf price with this four-line phone system that expands to up 16 base stations. Easy-to-install system canexpand to accommodate the needs growing businesses. Each base station can also be paired with a cordless accessory handset (sold separately) for added mobility and convenience. Professional features make it easy to manage calls and contacts. Headset and haring aid compatible. Base model. Answering System: N/A; Lines: 4; Telephone Type: Corded; Cordless; Caller ID/Type: N/A., UPC 044319703016