SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Technology Stocks : TLAB info? -- Ignore unavailable to you. Want to Upgrade?


To: dougjn who wrote (2610)6/25/1998 7:29:00 AM
From: John Carragher  Read Replies (2) | Respond to of 7342
 
Are we talking about switching your phone line completely over to cable? My cable gets knocked out in storms for up to three days. Yet , I have never had a phone line go down. Our cable doesn't even answer the phone on the weekend, if they are down. They always have an excuse for the calls not going through to their answering service. I was looking at installing direct tv however this is another story.

Sold a little tlab yesterday for the first time. Needed some cash and kept looking at the base. <g>

John



To: dougjn who wrote (2610)6/25/1998 3:27:00 PM
From: Beltropolis Boy  Respond to of 7342
 
>AT&T-TCI Plans Hinge on Unproven Technology

doug.

swell detailed post and i think you've answered mike's question regarding cablespan ip telephony: it'll be at least a year, possibly two, out.

i took a look-see at the "Voice-on-the-net (VON), VoIP, Internet (IP) Telephony" board and found a nice post. i'm by no means a telecom techie; this cable guy definitely has more tools. following are his comments on the at&t-tci deal. note to john: he echos your power outage concerns.

i feel like i've done a week's worth of due diligence in a half day. and i'm not even in yet. what am i thinking?

swing, battuh battuh, swing!
-chris.

-----

"Over half of the TCI systems have yet to be upgraded to hybrid fiber coax with upstream communications bandwidth - this pretty well explains why wireless local loop [WLL] is part of the last mile equation in an AT&T / TCI network proposal. Even those TCI systems with both HFC and upstream bandwidth will struggle to make the coaxial return path clean enough to use for IP based voice and data services. TCI tried and discontinued voice services over a HFC network in Fremont, CA. Part of the problem was economics, and part of the problem was technical with return path noise ingress. Even more troublesome for AT&T than the overall technical level of TCI networks may turn out to be the less than stellar level of service and customer relations in many areas. It won't be an easy sell for AT&T/TCI local telephone service to customers who are not very satisfied with their TCI cable service.

Of course, I cannot leave the subject of voice over IP via cable or WLL without pondering the power issue (one of my favorite subjects). Cable systems are still very vulnerable to service interruption during a power outage. Unlike copper pair telephone networks that are powered from the central office (or from remote digital loop carrier cabinets with at least 8 hours battery backup), most cable systems, including those with HFC, have limited battery reserve in case of power failures. Will the VoIP customer premises equipment be powered by the customer? If via WLL or cable modem, I think so."

Message 5003775