Corded base station GXP1625 includedSpecial Features: 1 SIP accounts; 2 line keys; 3-way conferencing; 3 XML programmable context-sensitive soft keys; HD audio on speakerphone and handset; EHS support for Plantronics headsets; Up to 500 contacts; call history up to 200 records; Multi-language; RJ9 headset jack.