V-Series 2RU 24 Pushbutton Key Panel with 4-pin XLR or 5-pin XLR Male headset connector. The key-panel has 24 talk pushbutton keys and 24 listen pushbuttons including one reply/answer-back key and 8 shift pages. Each key has associated up/down audio level control buttons. The 2RU key panel is offered with an additional dial keypad which allows telephone dialing and quick access to menus. The panel menu provides user set-ups and assignment options. The rear panel has Audio I/O and GPI/O connections.Key features:• International 10 character alpha-numerical fonts for ease of caller ID recognition • Yellow OLED's for better contrast and visibility• Individual key menus help ease of use and assignment• Digital Signal Processing (DSP) for audio routing and effects • “Listen Again” - replays last 30 seconds of incoming call • Each V-Series panel can be supervised or supervise another.