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DSCP
Bit 8
Bit 0
IP Header Version
HEX
Bit 8
Bit 0
IP Header Version
CODEC Frame Settings
The amount of required bandwidth depends on the type of CODEC and the selected packet
sending interval. The tables below show the amount of bandwidth required for one VoIP
channel in each case:
Required Bandwidth for Voice Communication via LAN
CODEC
G.711
G.729A
G.723.1 5.3 kbps —
G.723.1 6.3 kbps —
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
IHL
Type of Service
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
IHL
Type of Service
20 ms
30 ms
87.2 kbps
79.5 kbps
31.2 kbps
23.5 kbps
20.8 kbps
21.9 kbps
0
0
DSCP: 0
0
1
DSCP: 1
1
0
DSCP: 62
1
1
DSCP: 63
Reserved
Total Length
0
0
0
0
0
0
0
1
1
1
1
0
1
1
1
1
Total Length
Packet Sending Interval
40 ms
75.6 kbps
—
19.6 kbps
—
—
13.1 kbps
—
14.1 kbps
2.2 Programming
Reserved
Bit 15
Bit 32
IP Packet
HEX: 0
HEX: 1
HEX: FE
HEX: FF
Bit 15
Bit 32
IP Packet
60 ms
90 ms
—
—
10.5 kbps
11.6 kbps
Programming Guide
21
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