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Technology Stocks : Voice-on-the-net (VON), VoIP, Internet (IP) Telephony -- Ignore unavailable to you. Want to Upgrade?


To: MangoBoy who wrote (887)7/2/1998 9:54:00 PM
From: Bernard Levy  Respond to of 3178
 
Assuming QAM or CAP as line code, I do not think it would
be terribly difficult to develop a ''symmetrized'' version of
VDSL, ie., a short-range version of HDSL2.



To: MangoBoy who wrote (887)7/3/1998 7:35:00 PM
From: Bernard Levy  Read Replies (1) | Respond to of 3178
 
Mark:

The latest issue of Data Communications contains an
interesting article on the new fiber-optic based
long distance carriers.

data.com

In the middle, there is an interesting comment
about the high likelihood that RBOCs might buy some of
these companies. Makes sense, once RBOCS are allowed
in the long distance business..

Best regards,

Bernard Levy



To: MangoBoy who wrote (887)7/4/1998 10:08:00 PM
From: Frank A. Coluccio  Read Replies (1) | Respond to of 3178
 
>>seems to me that VDSL, being asymmetric, would likely remain targeted toward residential customers. business customers need at least as more if not more upstream bandwidth vs. downstream: VOIP and video telephony are symmetric, and most companies have high-traffic websites serving content to the web. "reversed" VDSL would better fit business bandwidth requirements.<<

Mark, I'm not so sure about that. Once you approach 52 down, and 6.3 up, I think that even the low speed side of the asymmetrical VDSL connection can accommodate just about anything you've mentioned. The higher speed on the downstream should allow for multiple TV sessions taking place, which I don't think anyone has intentions of sending in the reverse direction.

Reversed VDSL? How would that work, exactly? And what forms of media would you propose to support it, and to where?

VDSL, where it is being deployed successfully, such as in Next Level's and Alcatel's, is delivered to the pedestal over fiber, and then distributed to the home over either coax or twisted pair. In other words, it's not a technology that can sustain itself in the absence of the other elements, most importantly, a Sonet Ring to the pedestal or other device which is very close to the user.

Regards, Frank C.