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Siemens HIPATH 8000 User Manual

Page 167

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Alphabetical Reference

167

Bandwith calculation for Ethernet
(Values in brackets – security enabled)

2. WAN (e.g. ATM)

WAN-Overhead

Voice Codec

Packet size

[ms]

Payload

Bytes

Ethernet

Packet size

[Bytes]

Used Ether-

net-Band-

width incl.

Preamble

[kBit/s]

G.711

*

*

In the SIP environment it is possible to activate silence supression. In this case the band-

width calculation values are max values

10

80 (90)

150 (160)

120,0 (128,0)

G.711

**

20

160 (170)

230 (240)

92,0 (96,0)

G723

**

** For G.723 it is not possible to activate silence suppression and the only available sample

size is 30 ms

30

24 (34)

1014 (114)

25,1 (30,4)

G.729

***

*** In the SIP environment silence suppression is always active currently. In this case the band-

width calculation values are max values.

10

10 (20)

80 (90)

64,0 (72,0)

G.729

***

20

20 (30)

90 (100)

36,0 (40,0)

G.722

****

****For G.722 it is not possible to activate silence suppression.

10

80 (90)

150 (160)

120,0 (128,0)

G.722****

20

160 (170)

230 (240)

92,0 (96,0)

Protocol

Bytes

RTP

12

UDP

8

IP

20

ATM-Overhead

5

Total

45