ESI Communications IVX DP1 16 Button Display Phone Charcoal ESI Works with ESI IVX 20/128/128 PLUS, IVX X-Class; IVX E-Class (Generation 1 & 2); IVX S-Class (Generation 1 & 2) Three-line, 56-Character Display, Speakerphone and 16 Programmable Keys Includes New Handset, New Handset Cord, New Line Cord and New Desi Overlays and Base Stand 1 Year Warranty Tested by a Certified ESI Technician at Ramble On Communications