Installation guide

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B.3 Technical Information
The avedia IPTV solution uses multicast IP traffic to transmit both audio/video
data and channel announcements. Multicast traffic is controlled by IGMP
messages between the network switches and the attached devices (e.g. your
PC), and it is essential that these IGMP messages are successfully
transmitted and received whilst viewing a channel. Mcafee Personal Firewall
allows outbound IGMP messages from your PC, enabling you to establish the
initial connection to a TV or radio channel. However, it appears to block
inbound IGMP messages from the switch to your PC meaning that your PC
will not respond to these. The switch will eventually conclude that your PC no
longer wants to receive the multicast traffic and will stop sending it, resulting in
the TV or radio channel stopping playing.