44
There may be echoes if the audio from the control site
is amplified and a microphone or other audio collecting
device is equipped at the remote site.
If the echoes are annoying, then set the echo canceller
to ON at the remote site.
Note
• G722 cannot be selected in the receiver mode.
• 2B communication is obligatory when G722 is selected. No video can be sent by 1B communication.
• The transmitted video quality will be improved for increasing the video data when the audio data is decreased (select
G728 mode).
• G728 is automatically selected if the serial data port is set to 9 600 bps.
• Audio quality cannot be selected during communication.
Notes
●
Audio Setup [440]
This menu lets you set the audio methods for the transmitter and receiver.
The audio quality is determined by the settings made on the transmitter.
4 4 0 A U D I O
A E C ( L O C A L ) : O N O F F
A U D I O S E N D : G 7 2 8 G 7 2 2 O F F
W H E N S E R I A L D A T A P O R T R A T E I S 9 6 0 0 .
A U D I O C A P . I S G 7 2 8
↑ ↓
: M O V E
← →
: S E L E C T E S C : P R V
4 4 0 A U D I O
A E C ( L O C A L ) : O N O F F
A U D I O S E N D : O N O F F
↑ ↓
: M O V E
← →
: S E L E C T E S C : P R V
1
Move the cursor to the AEC (LOCAL)
parameter. Then select either ON or OFF by
pressing the Direction buttons.
This item let you enable or disable the echo canceller at the
local site.
ON:
Enables echo canceller.
OFF:
Disables echo canceller.
2
Move the cursor to the AUDIO SEND
parameter. Then select a mode by pressing
the Direction buttons.
• Remote Site (Transmitter)
G728:
Select it when the video quality has a higher pri-
ority than audio quality. It is also valid to transmit
video and audio via 1B line.
G722:
Select it when the audio quality has a higher pri-
ority than video quality.
OFF:
Disables audio transmission.
• Control Site (Receiver)
ON:
Enables audio transmission.
OFF:
Disables audio transmission.
• Control Site (Receiver)
• Remote Site (Transmitter)
●
Audio Modes versus Receiving Audio
Transmitter
Receiver
Transmitter
→
Receiver audio
Receiver
→
Transmitter audio
G722
ON
G722
G722
G722
OFF
G722
OFF
G728
ON
G728
G728
G728
OFF
G728
OFF
OFF
ON
OFF
G728
OFF
OFF
OFF
OFF
Note:
G728 is automatically selected if the serial data port is set to 9 600 bps.