Table 48 Cmode Bits For Table 49 Nack Packet - Digital Voice Systems Net-2000 User Manual

Net-2000™ Voice Codec Unit
User's Manual
Voice Response Packet
Bytes
(msb-lsb)
0 - 1
2 - 3
4 - 5
6 - 7
8 - 9
10 - 11
12 - 13
14 - 15
16 - 17
18 - 19
20 - 21
22 - 23
24 - 25
26 - 27
28 - 29
30 - 31
32 - 33
...
(len-2) - (len-1)
Table 47 Voice Response Packet
The cmode element of the packet contains the status flags returned by the first decoder function as
shown in Table 48 cmode Bits for Voice Response Packets.
cmode parameter bits
Voice Response Packet Flags
AMBE DTMF FRAME FLAG
If set, the decoder determined that the data in the
voice[] array is a single, DTMF, or call progress
tone. The index and amplitude of the tone should
be put in the tone.idx and tone.amp parameters of
the packet, respectively.
AMBE DATA INVALID FLAG
If set, the decoder has determined that the channel
data passed to it is invalid and a frame repeat or
comfort noise insertion was performed.
AMBE VOICE ACTIVE FLAG
If set, the data in the voice[] array is voice or tone
data. If cleared the data in the voice[] array is a
silence frame.
*Not Used
Table 48 cmode Bits for Voice Response Packets
If the decoder sets the AMBE DTMF FRAME FLAG status flags output, the tone.idx and tone.amp
elements will contain the tone index and amplitude of the tone. Otherwise, tone.idx would be set to
AMBE INVALID TONE and tone.amp would be set to zero.
DVSI Confidential Proprietary
Bit
7 6 5 4 3 2 1 0
x x x x x x x x
0 0 0 0 0 0 0 0
x x x x x x x x
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 x 0 0 0 0 0 0
0 0 0 0 0 0 0 0
x 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 x x x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
...
x x x x x x x x
Section 3 – Net-2000™ VCU Control
Bit
7 6 5 4 3 2 1 0
x x x x x x x x
0 0 0 0 0 0 1 0
x x x x x x x x
1 1 0 0 0 x x x
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
1 0 x x x x x x
0 x x x x x x x
1 0 x x x x x x
0 0 0 x 0 0 x x
x x x x x x x x
x x x x x x x x
x x x x x x x x
...
x x x x x x x x
Byte 18 Byte 19
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
x * * * * * * * * * x * * * x *
Parameter Name
len
type
seq
rate [0]
rate [1]
rate [2]
rate [3]
rate [4]
rate [5]
cmode
tone.idx
tone.amp
ws
format
voice [0]
voice [1]
voice [2]
...
voice [ws-1]
Bits
15
5
1
14, 13, 12, 11,
10, 9, 8, 7, 6,
4, 3, 2, 0
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