Optik TV
Optik TV is Telus' IPTV based television service. Optik TV currently uses the Microsoft Mediaroom middleware platform for its service. In the past, Telus used the iMagic and Minerva middleware platforms. Since August 2010 customers with Optik TV can use any Xbox 360 with a hard drive as a secondary set top box for Optik TV (Telus was the first company in Canada to offer this option). Video, Interactive Programming Guide and Applications are delivered via IPTV from the head-end to the consumer's High-Definition PVR or High Definition set-top box. Broadcast channels are distributed via IP multicast, allowing a single stream (channel) to be sent to any number of recipients. The system is also designed for individual unicasts for video on demand, central time shifting, start-over services and other programs desired by only one home at that particular time. The set-top box does not have a conventional tuner, but is an IP multicast client which requests the stream desired. In the IP multicast model, only the streams the customer uses are sent. The customer's connection need not have the capacity to carry all available channels simultaneously.
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