Silent
monitoring of an agent consumes almost the same network bandwidth as an
additional voice call. If a single agent requires bandwidth for one voice call,
then the same agent being silent monitored requires bandwidth for two
concurrent voice calls.
For
example, assume the following:
In this
case, plan for network capacity for 100 + (20% of 100) concurrent calls, or 120
concurrent calls.
To
calculate the total network bandwidth required for your call load, you would
then multiply this number of calls by the per-call bandwidth figure for your
particular codec and network protocol.
For
example, the table on the Cisco Voice Over IP-Per Call Bandwidth Consumption
website lists the per-call bandwidth on the G.711 codec (for a call with the
default voice payload size) over Ethernet as 87.2 Kbps. You multiply this 87.2
Kbps by 120 calls to obtain the total required network bandwidth.
For more
information about per-call bandwidths for various codecs and network protocols,
see the Cisco Voice Over IP-Per Call Bandwidth Consumption website at
http://www.cisco.com/c/en/us/support/docs/voice/voice-quality/7934-bwidth-consume.html.
For more
information about calculating bandwidth, see the Cisco Voice Codec Bandwidth
Calculator at
http://tools.cisco.com/Support/VBC/jsp/Codec_Calc1.jsp.