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A31003-H3590-S100-7-7620, 06/2012
HiPath 3000/5000 V9, Service documentation
9-37
Nur für den internen Gebrauch Expanding and Upgrading HiPath 3000
Upgrading HiPath 3000
Increased bandwidth requirement with SRTP
The table provides an overview of the increase in bandwidth requirements caused by the
SRTP. The bandwidth is assumed to rise by 70 bytes as a result of RTP, UDP, IP, 802.1Q
VLAN tagging and MAC (incl. preamble, FCS). SRTP accounts for an additional increase of 10
bytes. This brings the overall increase to 80 bytes.
Voice
codec
Sample du-
ration
Payload Ethernet
data packet
size
RTP
Ethernet
bandwidth
incl. pream-
ble
SRTP
Ethernet
bandwidth
incl. pream-
ble
SRTP
Increased
Ethernet
bandwidth
(ms) (bytes) (bytes) (Kbps) (Kbps) (%)
G.711 20 160 240 92 96 4.3
40 320 400 78 80 2.6
60 480 560 73.3 74.7 1.9
G.723.1 30 24 104 25.1 27.7 10.4
G.723.1A 60 48 128 15.7 17.1 8.9
G.729A 20 20 100 36 40 11.1
40 40 120 22 24 9.1
60 60 140 17.3 18.7 8.1
G.729A
DMC
Master
Call
100 6 86 6.1 6.9 13.1
G.711
DMC
Master
Call
100 11 91 6.5 7.3 12.3
G.723
DMC
Master
Call
90 6 86 6.8 7.6 11.8
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