
Chapter 4 VoIP Trunk Configuration 77
IP Telephony Configuration Guide
Repeat this procedure for every NetMeeting client you want to set up.
Quality of Service Monitor
The Quality of Service Monitor is an application that monitors the quality of the IP channels. It
does this by performing a check every 15 seconds. The QoS Monitor determines the quality of the
intranet based on threshold tables for each codec. If the QoS Monitor is enabled, and it determines
that the quality of service falls below the set threshold, it will trigger fallback to PSTN. For
information about setting up the system to use QoS and fallback to PSTN, see “Configuring PSTN
fallback” on page 60.
Quality of Service Status
The QoS Status displays the current network quality described as a Mean Opinion Score (MOS)
for each IP destination. A pull-down menu allows the administrator to view the MOS mapping.
Table 9 shows a sample QoS Monitor.
Table 9 QoS status
Updating the QoS Monitor data
To update the table with the most current values:
From the View menu, select Refresh.
Port settings
In some installations, you may need to adjust the port settings for the Business Communications
Manager can work with other devices.
IP
QoS
Monitor
G.729 G.711
G.723.1 6.3
kbit/s
G.723.1 5.3
kbit/s
Tx Rx Tx Rx Tx Rx Tx Rx
47.192.5.2 Enabled 4.50 4.50 4.00 4.30 4.75 4.70 4.80 4.90
47.192.5.6 Disabled N/A N/A N/A N/A N/A N/A N/A N/A
Note: For the QoS monitor and PSTN fallback to function, both Business
Communications Managers must list each other as a Remote Gateway and QoS
Monitor must be enabled on both systems.
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