Front Panel Controls & Connectors
Talk/Listen Switches: 12 (1RU)
Answer Back Switch: Configurable (None, 1 or 2)
Volume Controls: 2 (Main and Aux)
Headset Connector: 1 (XLR-4M, XLR-5F, XLR-7M)
Panel Mic Connector: 1 (3-pin)
Rear Panel Connectors
GPIO: DB-25F
Matrix: RJ45 (single-channel)
Matrix (IP): RJ45 (multi-channel)
Auxiliary Audio: DB-25M
Expansion Panel: RJ45
DC Power: 4-pin DIN (with locking sleeve)
Headset Audio Earphone Impedance: From 32 Ohms
Output Power: 75mW into 50 Ohms for <1% distortion
Loudspeaker Audio Frequency Response: 40Hz-20kHz +/- 3dB
Panel Microphone Input Type: Electret
Level: 40-70 dBu
Impedance: 1700 Ohms +/- 10%
Headset Microphone Input Type: Dynamic or Electret
Level: -40 - 0 dBu