For example, if you wish to use only 10 of the available 16 virtual VoIP channels (i.e., disable 6 channels), set
ports 8, 7, and 6 to OUS as shown below:
In this case, the equation for bandwidth calculation, based on the previous example, will change as follows:
Required Bandwidth
= (No. of Fax Machines ´ Required Bandwidth for the G.711 codec) +
[(
10 - No. of Fax Machines) ´ Required Bandwidth for Voice Communication]
= (2 ´ 87.2) + [(
10 - 2) ´ 31.2]
= 424 (kbps)
16 IP Networking Guide Document Version 2010-08
2.1.1 Bandwidth Assessment
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