Yes it works over docsis, you assigned downstreams to part of a multicast group and the CMTS will use those when a device asks to join.
X1 is both traditional HFC and also full on IPTV which is where everyone is going including HFC plants. Mediaroom is the least popular middleware when looking at the major ones, Minerva has much more market share. Cox licensed the X1 platform for their Contor product after ditching Cisco for some reason. Sent from my iPhone On Dec 16, 2016, at 4:27 PM, Jean-Francois Mezei <jfmezei_na...@vaxination.ca<mailto:jfmezei_na...@vaxination.ca>> wrote: Today, Rogers (in Canada) announced it was ditching it long running project to move to an IPTV platform it had been developping and will adopt Comcast X1. (some $500 million writeoff). Telco IPTV systems use multicasting all the way to the customer's LAN and generally use the Microsoft/Ericcson MediaRoom product suite and compatible STBs. Could a cableco have deployed Mediaroom on a DOCSIS system? Does docsis support multicasting ? I assume it would run on a separate DOCSIS group of NTSC channels on the coax and likely require 2 modems in the home. I am curious on why Rogers would have spent so much time trying to develop its own system. With regards to Comcast X1, is this a very conventional TV on coax system, with a bunch of switched video channels to cater to on-demand services to invividual homes ? Or does X1 use some form of IP connection to deliver "data" for the on-demand content ? (while linear TV still provided in traditional digital channels bundled into an NTSC channel ? BTW, one of the original arguments for Rogers is that cable STBs had proprietary software that was slow to evolve and get new features approved/tested, so they lagged behind the IPTV STB software which didn't require certificatioN/approval by the STB hardware vendors (cisco etc). Has any Cable system converted to IPTV ? Luke Guillory Network Operations Manager [cid:image56af80.JPG@29a6b056.4196f16d] <http://www.rtconline.com> Tel: 985.536.1212 Fax: 985.536.0300 Email: lguill...@reservetele.com Web: www.rtconline.com Reserve Telecommunications 100 RTC Dr Reserve, LA 70084 Disclaimer: The information transmitted, including attachments, is intended only for the person(s) or entity to which it is addressed and may contain confidential and/or privileged material which should not disseminate, distribute or be copied. Please notify Luke Guillory immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. Luke Guillory therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission.
