Controlling Audio

Procedure

1. Choose Device Control > Device Control and click the Audio Control tab.
2. Set the audio control parameters listed in Table 6-3.
   Table 6-3  Audio control parameters

   Parameter	Description	Setting
   Audio Input
   Audio Input	Turns on or off all audio input sources.	The default value is Unmute.
   MIC 1 MIC 2 (only TE60)	Adjusts the microphone volume at your site. When you adjust this microphone volume, the volume heard at remote sites is adjusted accordingly.	The default value is +0dB. Value range: -12 dB to +12 dB
   RCA L RCA R	Adjusts the input volume of the RCA port at your site. When you adjust this input volume, the volume heard at remote sites is adjusted accordingly.	The default value is +0dB. Value range: -12 dB to +12 dB
   HDMI L HDMI R	Adjusts the input volume of the HDML port at your site. When you adjust this input volume, the volume heard at remote sites is adjusted accordingly. NOTE: This parameter is available only when the HDMI port of the endpoint is connected to an input source.	The default value is +0dB. Value range: -12 dB to +12 dB
   LINE IN L (only TE50) LINE IN R (only TE50)	Adjusts the input volume of the LINE IN port at your site. When you adjust this input volume, the volume heard at remote sites is adjusted accordingly.	The default value is +0dB. Value range: -12 dB to +12 dB
   Microphone array 1 MIC array 1 battery level Microphone array 2 MIC array 2 battery level Microphone array 3(only TE60) MIC array 3 battery level(only TE60)	Displays the microphone array volumes and battery levels in real time.	-
   Audio Output
   Speaker	Mutes or unmutes the speaker at your site. To hear other sites, unmute the speaker.	The default value is Unmute.
   Volume	Adjusts the output volume heard at your site. If both left and right audio channels are available, the volume of both channels is adjusted at the same time.	The default value is 15. Value range: 0-21 Recommended value: 15-18
   Alert tone volume	Increases or decreases the alert tone volume.	The default value is 3. Value range: 0-3
   Sound Effect
   AUDIO IN local output	Specifies whether to allow the audio input from the LINE IN port (only TE50), the HDMI port, or the RCA port to be heard at your site.	The default value is Mute. It is recommended that you set this parameter to Unmute.
   AUDIO IN remote output	Specifies whether to allow audio input from the LINE IN port (only TE50), the HDMI port, or the RCA port to be heard at remote sites.	The default value is Unmute.
   AUDIO IN echo cancellation	If echo cancellation is enabled, the endpoint removes echo in the audio input from the RCA port. NOTE: Set this parameter to Mute when the RCA port on the endpoint is connected to an audio player device such as a computer.	The default value is Unmute.
   Music Mode	Set this parameter to Unmute to improve the musical effects in the following scenario: The local microphone picks up music played at the local site and transmits the music to the local endpoint, and AUDIO IN echo cancellation is set to Unmute.	The default value is Mute.
   Bass Middle Treble	Adjusts the gain of bass, middle, and treble tones.	The default value is +0dB. Value range: -6 dB to +6 dB
   PSTN
   PSTN	Adjusts the volume of a PSTN call at your site. When you adjust this volume, the volume heard at remote sites is adjusted accordingly.	The default value is +0dB. Value range: -12 dB to +12 dB
   Mix PSTN audio	Specifies whether all sites (including PSTN sites such as mobile phones) in a conference can hear each other.	The default value is Enable. If you retain the default value, all sites in a conference can hear each other. Retain the default value when your endpoint joins a multipoint conference as a PSTN site.