TiVo Community Forum Archive 1

TiVo Community Forum Archive 1 (http://archive.tivocommunity.com/tivo-vb/index.php)
- TiVo Home Media Features & TiVoToGo (http://archive.tivocommunity.com/tivo-vb/forumdisplay.php?forumid=35)
-- TIVO HMO and Gigabit Ethernet Works Great! (http://archive.tivocommunity.com/tivo-vb/showthread.php?threadid=118951)


Posted by SteakMan on 06-23-2003 09:19 PM:

quote:
Originally posted by HTXpertGuy
Which is true and what I ment to state. But, what I keep stating is if TIVO had built in Gigabit support, when the entire chain would be Gigabit both from the home network servers to the TIVOS.
Ah, OK.
quote:
Actually Steakman, you are citing examples from non supported white papers that the consortium for TIA does not support today. I read the article in the link of your last post and this is OLD. Plus, it only talks about CAT 5 and is still NOT CORRECT. Offically, CAT 5 NEVER, I repeat, NEVER supported Gigabit. It was CAT 5e which was speced in the final white papers by TIA and the consortium to achieve Gigabit at the maximum levels. Running it over plain CAT 5 was never an option. Your paper here is full of old and incorrect information in certain major areas.

You must not have read the paper if you think that is what it says. In fact, it doesn't say any cable will officially support GB because it IS from 1999.

The gist of it is as I summarized. GB was developed to run on existing installations, otherwise adoption would be too slow. The TIA may have dropped that philosophy, but that doesn't change the origins.

It also points out something I knew and forgot... Cat5 is rated at 100MHz. Cat5e is also rated at 100MHz, so Gigabit Ethernet must not need more than 100MHz.

There is no difference between Cat5 and Cat5e except that the 5e was tested to make sure that the return loss and ELFEXT are within spec. Cat5 doesn't spec out the return loss or ELFEXT at all, so it isn't tested. I've read that most Cat5 will actually meet Cat5e specs if you test it. That is why most 100 TX installations will work with GB and that is why you can sometimes clean it up at the connections.

-SteakMan-

__________________
GXCEB0TD - 69hrs - TurboNet
HDVR2 - 107hrs - BASH over USB/Ethernet


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