CT8022 Datasheet, PDF (106/194 Pages) List of Unclassifed Manufacturers – VOIP/VON G.723.1, G279AB TRUESPEECH CO-PROCESSOR

TrueSpeech® Co-Processor
PRELIMINARY/CONFIDENTIAL
Version: 1.18
9.15.4.1 Set Echo Suppressor Attenuation
This is the Set Speakerphone Parameters command used in Standalone Speakerphone mode. It may be used in
DSVD Speakerphone mode to set the echo suppressor attenuation. This command should be sent only after starting
playback and record.
Command:
1110
001
Line Volume
Speaker Volume
Loop Attenuation
(15-12)
(11-9)
(8-7)
(6-3)
(2-0)
Status:
1110
(15-12)
001
(11-9)
Line Volume
(8-7)
Speaker Volume
(6-3)
Line Volume:
This controls the volume transmitted to the telephone line
00
+8 dB
01
+4 dB
10
+0 dB (normal setting)
11
Mute Microphone (also resets AEC)
Speaker Volume:
This controls the volume to the speakerphone loudspeaker.
0000
+14 dB
0001
+12 dB
0010
+10 dB
0011
+8 dB
0100
+6 dB
0101
+4 dB
0110
+2 dB
0111
0 dB (normal setting)
1000
-2 dB
1001
-4 dB
1010
-6 dB
1011
-8 dB
1100
-10 dB
1101
-12 dB
1110
-14 dB
1111
Speaker Mute
Loop Attenuation:
(Echo Suppression)
Total attenuation used by receive and transmit attenuators
Full Duplex Operation
000
0 dB
001
-4 dB
010
-8 dB (default for DSVD mode)
Half Duplex Operation
011
-12 dB
100
-16 dB
101
-20 dB
110
-24 dB
111
-28 dB
Loop Attenuation
(2-0)
106
DSP GROUP, INC., 3120 SCOTT BOULEVARD
CT8022A11AQC FW Revision 0118
SANTA CLARA, CA 95054 PH: 408 986 – 4300 FAX: 408 986 – 4490
All specifications are subject to change without prior notice.