We are using SX10 codec & we need to use a balance line signal out from Biamp Nexia DSP as a Mic input to this codec. We are connecting 3 mics in Nexia DSP & mix Balance out will go to Mic In of SX10 codec for far end participants.
The 4 pin connector pinout given by cisco is 1, 2, 3, 4 = T, R1, R2, S = Hot+, Cold-, Mic control, Ground respectively.
We are using 4 pin connector with the signal Hot+, Cold- , Ground as pins 1, 2, 4 respectively. We are not using pin 3 as Mic control for Mute/Unmute button.
By using this connection we are not able to get audio at far end.
Do we need to short pin 3 & 4 for grounding Mic control to work this?
If we use External Mic of Cisco, it works fine.
Please share the solution..