RTS RVON-I, Руководство пользователя

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RVON-I/O Command Table
Codec :Determines how the audio is compressed/decompressed and the name given to the defined algorithm.
Codec Rate :Actual bits per second of the audio in compressed form. This is sent over the network through various data
packets. Network efficiency can be calculated with an IP header for each packet of X ms of audio.
Size :Amount of audio in each IP Packet, milliseconds (ms)
VAD :Voice Activity Detection, when enabled and only when audio is above a certain threshold, will send packets. Otherwise,
a silence packet is sent once, and not again until audio is above the threshold. Enabling this will result in a more efficient
network, but care must be taken to because of the mother’s day phenomenon. If there is ever a need to have all audio paths
open and active, a network designer must account for this scenario.
TABLE 10.
Codec Specifications.
Codi
ng P
rof
il
e
Co
de
c
Co
de
c Ra
te
Audi
o (m
s)
/ P
a
ck
e
t
Pa
ck
et
s/
S
e
co
n
d
Enc
o
de
d Au
di
o
(by
te
s)
IP O
v
e
rhe
ad (by
tes)
T
o
ta
l Pa
ck
et
S
ize
(
b
y
te
s)
B
a
ndwi
d
th (By
tes/
sec
)
B
a
ndwi
d
th (kbps/
si
d
e
)
Ba
ndwi
d
th
(kb
p
s/
c
h
anne
l)
0,3,6,9 G.711 64k 10 100.00 80 60 140 14000 112 224
1,4,7,10 G.711 64k 20 50.00 160 60 220 11000 88 176
2,5,8,11 G.711 64k 30 33.33 240 60 300 10000 80 160
12,16 G.729 8k 10 100.00 10 60 70 7000 56 112
13,17 G.729 8k 20 50.00 20 60 80 4000 32 64
14,18 G.729 8k 40 25.00 40 60 100 2500 20 40
15,19 G.729 8k 60 16.67 60 60 120 2000 16 32
20,22 G.723 5.3k 30 33.33 24 60 84 2800 22.4 44.8
24,26 G.723 6.3k 30 33.33 24 60 84 2800 22.4 44.8
21,23 G.723 5.3k 60 16.67 48 60 108 1800 14.4 28.8
25,27 G.723 6.3k 60 16.67 48 60 108 1800 14.4 28.8
NOTE
: A channel consists of a transmitting and a receiving side, so the bandwidth is double for a bi-directional audio stream.
NOTE
: Bandwidth values are approximate maximums, actual bandwidth could be considerably lower with VAD enabled.
TABLE 11.
Supplemental Coding Table
Coding Codec Codec Rate Size VAD
0 711u 64k 10 Y
1 711u 64k 20 Y
2 711u 64k 30 Y
3 711u 64k 10 N
4 711u 64k 20 N
5 711u 64k 30 N
6 711A 64k 10 Y