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Technology Stocks : AUTOHOME, Inc

ATHM 23.43

-2.1%

Nov 26 3:59 PM EST

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To: ahhaha who wrote (10882)	6/9/1999 5:04:00 PM
From: E. Davies	Read Replies (2) of 29970

Great post. Plain English! Didnt think you had it in you <g>. Couple questions and/or clarifications to bring out for the more technically advanced to answer: The home drop is connected to the pole hung cable and that cable runs around the neighborhood covering up to 500 houses in the usual model. We refer to this as the local loop. It has to be wired in HFC which is a optical fiber hybrid. As far as I understand it the cable modems which drive the loop connect to standard coax cable (higher quality than the one inside the home obviously). No optics are involved until the headend->data center connections. I dont know if the wires in the local loop need to be replaced when upgrading the architecture to HFC, but I do know the electronics do need to be replaced so that the amplifiers allow a return upstream path. Both of these streams can be put on one channel. This might be misinterpreted. You cannot put upstream and downstream on the same frequency. Nor can you put upstream in a frequency range used for downstream. Upstream can be placed below normal TV spectrum and above it as well (Correct dave/frank?). I think (not sure) that current DOCSIS modems only use frequencies below the normal TV spectrum. Is there enough room in the portion of the spectrum allocated or designated by the FCC to accommodate say 10 major ISPs? The answer is yes. Upstream bandwidth is currently pretty limited and lots of uses are planned for it. I dont think you can easily say that there is enough to support 10 ISP's. Why do you think ATHM has throttled upstream bandwidth already? Even coming up with 10 downstream channels would be a major organizational headache, but I'll bet they are there somewhere. Eric

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