Voice Issue

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Hi Team,
I am facing a problem while using a photon voice some time one player is not able to hear another player but the other player is able to hear.
while debugging I came to know that SimpleSpeakerFactory method is not getting called this method belongs to VoiceConnection class.

I did cross-check
1.use Photon microphone type
2.add WebRtcAudioDsp component next to the Recorder component (at compile time or at runtime before recorder is
started) being used and enable "AGC" (Automatic Gain Control)
3.add MicAmplifier component next to the Recorder component (at compile time or at runtime before the recorder is started) being used and tweak its values.
4. same Region
5.Room name

Please help me out to resolve voice issues. I have purchased 100CCU plan .Need to deliver the Application to the client on time.