Iwatsu America Inc ADIX-BS ユーザーズマニュアル
Engineering Bulletin EBA-2000-28 DRAFT
105 of 105
ADIX Software Version 7.00
Installation Guide and Feature Description
Echo Suppressor
Class 34
Item 04
Class 34 Item 04 - Echo Suppressor is used to enable or disable Echo Suppression on
the portable station that is connected to the analog station or trunk. If an echo occurs dur-
ing a conversation and the data = 1, the system attempts to eliminate the echo. However,
a large echo may not be suppressed properly.
the portable station that is connected to the analog station or trunk. If an echo occurs dur-
ing a conversation and the data = 1, the system attempts to eliminate the echo. However,
a large echo may not be suppressed properly.
An echo is caused by transmit audio going back to the receiver through the two-wire-to-
four-wire conversion circuit. Especially in PHS-compliant systems, the echo sounds
unnatural because of the total 10 msec delay between the portable station and the base
station. An echo suppressor or an echo canceller is used to reduce the echo.
four-wire conversion circuit. Especially in PHS-compliant systems, the echo sounds
unnatural because of the total 10 msec delay between the portable station and the base
station. An echo suppressor or an echo canceller is used to reduce the echo.
An echo suppressor detects transmitted audio signals and suppresses the echo by reduc-
ing the sidetone signals sent to the receiver during transmission.
ing the sidetone signals sent to the receiver during transmission.
DSS Display
Programming Field Description
Related Operation:
Class/Item
Element Field
Description
Data Field
34.04
<EXTL001>
Echo Suppressor
0
Data Field:
Meaning:
Echo Suppression
Range:
0 - 1
0 = Disable
1 = Enable
Default:
0