Caring for your hardware – Cisco Linksys SPA9000 User Manual
Page 37
2-7
Linksys SPA9000 Administrator Guide
Document Version 3.01
Chapter 2 Getting Started
Implementing LVS
This table is based on the following assumptions:
•
Bandwidth Calculated with No Silence Suppression
•
20 Millisecond of payload per RTP packet
Note
The use of silence suppression can reduce the average bandwidth budget by 30% or more.
For more information about bandwidth calculation, refer to the following websites:
Caring for Your Hardware
The SPA9000, SPA400, and the SPA900 Series phones are electronic device that should not be exposed
to excessive heat, sun, cold or water. To clean the equipment, use a slightly moistened paper or cloth
towel. Do not spray or pour cleaning solution directly onto the hardware unit.
Table 2-1
Ethernet Bandwidth Budget for Off-Net VoIP Calling
Codec
Approximate bandwidth budget for each
side of conversation
2 calls
4 calls
6 calls
8 calls
G.711
110 kbps
220 kbps
440 kbps
660 kbps
880 kbps
G.726-40
87 kbps
174 kbps
348 kbps
522 kbps
696 kbps
G.726-32
79 kbps
158 kbps
316 kbps
474 kbps
632 kbps
G.726-24
71 kbps
142 kbps
284 kbps
426 kbps
568 kbps
G.726-16
63 kbps
126 kbps
252 kbps
378 kbps
504 kbps
G.729
55 kbps
110 kbps
220 kbps
330 kbps
440 kbps