
5.4 AUDIO
The 
Mode  | Full duplex: Allows using a microphone and amplifier at the  | |
  | 
  | same time, or turning them off at main page.  | 
  | Half duplex: Allows using a microphone or amplifier by manual  | |
  | 
  | switch.  | 
  | Simplex microphone only: Allows using the microphone only.  | |
  | Simplex amplifier only: Allows using the speaker only.  | |
  | Audio off:  | Turns audio off; i.e. both the microphone and  | 
  | 
  | speaker are inactive.  | 
Audio In  | 
  | 
  | 
Codec  | G726/24:  | Uses G.726 24Kbps for audio encryption.  | 
  | G726/32:  | Uses G.726 32Kbps for audio encryption.  | 
  | G711a:  | Uses G.711   | 
  | G711u:  | Uses G.711   | 
Gain  | Audio in gain (volume) adjustment 10~100%  | |
Audio out  | 
  | 
  | 
Codec  | G726/24:  | Uses G.726 24Kbps for audio decryption.  | 
  | G726/32:  | Uses G.726 32Kbps for audio decryption.  | 
  | G711a:  | Uses G.711   | 
  | G711u:  | Uses G.711   | 
Gain  | Audio out gain (volume) adjustment 10~100%  | |
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