Siemens HiPath 3000 Series Service Documentation page 821

Nur für den internen Gebrauch
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 Sample du-
codec ration
(ms)
G.711 20
40
60
G.723.1 30
G.723.1A 60
G.729A 20
40
60
G.729A 100
DMC
Master
Call
G.711 100
DMC
Master
Call
G.723 90
DMC
Master
Call
A31003-H3590-S100-7-7620, 06/2012
HiPath 3000/5000 V9, Service documentation
Payload Ethernet
data packet
size
(bytes) (bytes)
160 240
320 400
480 560
24 104
48 128
20 100
40 120
60 140
6 86
11 91
6 86
Expanding and Upgrading HiPath 3000
Upgrading HiPath 3000
RTP SRTP
Ethernet Ethernet
bandwidth bandwidth
incl. pream- incl. pream-
ble
(Kbps) (Kbps)
92
78
73.3 74.7
25.1 27.7
15.7 17.1
36
22
17.3 18.7
6.1
6.5
6.8
exup.fm
SRTP
Increased
Ethernet
bandwidth
ble
(%)
96 4.3
80 2.6
1.9
10.4
8.9
40 11.1
24 9.1
8.1
6.9 13.1
7.3 12.3
7.6 11.8
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