The V-Series 1RU 12-key rotary panel with 4-pin XLR or 5-pin XLR male headset connector. The key-panel has 12 talk pushbuttons and 12 rotary listen switches, including one reply/answer-back key and 8 shift pages. Each talk pushbutton has an associated audio level rotary switch control and a 10-character alphanumeric display. The key-panel menu provides user set-ups and assignment options. The rear panel has Audio I/O and GPI/O connections. Color-coded keys for easy identifiable function such as blue for phone lines, purple for IFBS, red for all others, The product is also available as pushbutton and lever key-panel types.