Front Panel Controls and Connectors
Talk/Listen Switches: 12
Answer Back Switch: Configurable (None, 1 or 2)
Volume Controls: 2 (Main and Aux)
Headset Connector: 1 (XLR-4M or XLR-5F)
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 AES Option: AES (75Ω Co-Ax): BNC (dual channel)
AES (CAT5): RJ45 (dual channel)
Headset Audio
Earphone Impedance: From 32Ω
Output Power: 75mW into 50Ω for <1% distortion
Loudspeaker Audio
Frequency Response: 40Hz-20KHz +/- 3dB
Panel Microphone Input
Type: Electret
Level: 40-70dBu
Impedance: 1700Ω +/- 10%