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Technology Stocks : Ascend Communications (ASND) -- Ignore unavailable to you. Want to Upgrade?

To: pat mudge who wrote (37185)	3/3/1998 2:48:00 AM
From: Jack Colton	Read Replies (1) \| Respond to of 61433

Of course they want full ADSL. 12 years ago they wanted and started deploying COs capable of handling the first DSL (besides T-1) - ISDN. It has only recently been widely available. And once they got it out there as a product, the Non Measured areas had to be retariffed because of the unexpected uses of ISDN. When I once asked the BellSouth Network Engineering VP how many of their installed ISDN lines were used to pin up 128KB data circuits, his response was "All of them!" That in itself was not the culprit. It was not initially a lost revenue problem - ie: a $100/mo ISDN line versus a $250/mo DDS circuit. It was not even a switching / switching-capacity problem. It was all of the INTER Central Office TRUNKS that were being tied up. DDS and Data circuits did not go through the switches or through the tie lines between switches. They were pinned up outside (point to point) the switching fabric. The inter CO trunks were for voice calls - whose duration was fairly predictable with the traffic studies. But come along ISDN, and BLAM! All of those trunks get tied up. The ISDN line in my house connects to a switch, and probably passes through several other switching points before connecting to my office or ISP. I could be using 25 or more sets of inter CO trunks with just one data circuit. (Pretty cool, huh?) But not for the phone company. That is why BellSouth implemented a penny a minute charge for EACH B channel in use (over a nominal amount). So, you see your basic $100/mo ISDN data application turn into a $525/mo application and they just about killed ISDN as it was getting off the ground. Except we taught the equipment (at least ASND has) how to dial on demand and increase bandwidth on demand, so now all of those formerly "Dedicated" ISDN circuits can drop the call when no data is present. Tell me if this really old news - or if I am just rambling. I've only recently found out about techstocks and I do not know what has been stated in the past. What are the tariffs like in your area? Also, one more point, but I'll put it in another message. Jack

To: pat mudge who wrote (37185)	3/3/1998 3:17:00 AM
From: Jack Colton	Read Replies (1) \| Respond to of 61433

Part 2: Let's pretend we wake up later this morning, and the phone company has installed full ADSL to my house. What does that mean? Last time I checked it went something like this: I get a box of some sort, that has a few, rusty copper wires coming out of it, that sits down/over in my telephone closet. (When I wake up I want it to be done right.) Now, on the other end of those 28 guage, one twist per foot wires is the nearest hut (I'd call it a 'Slick Hut' but then I'd have to post this on the "Did Slick Boink Monica" thread) and the wires terminate into some full ADSL equipment. WOW! I now have a gazillion megabit connection to the hole at the end of the street. What else is in that hole except for my neighbors' gazillion megabit connections and a couple of T-1s back to the CO? You see, I just don't think the infastructure is there to provide us with really good "stuff" just becase I get the final copper pairs upgraded to higher data rate short haul modems. But I do know the solution: A MAX TNT under every manhole cover. Jack PS: Sorry, I'm getting tired. I've been out scuba diving all night.

To: pat mudge who wrote (37185)	3/3/1998 10:50:00 PM
From: Jack Whitley	Read Replies (1) \| Respond to of 61433

<<From all I hear, telcos want the full ADSL, not G.Lite, even if they do start with the lesser speeds to get the market primed. They have to have enough speed to compete with cable. This means 6 to 8 Mbps ADSL and eventually 52Mbps VDSL.>> Has progress been made in xDSL with respect to signal attenuation on the last mile of copper ? From everything I've seen and heard, the local copper is pretty spliced up (average 19 splices per last mile ?) and ratty in most of the country. I think around here BellSouth still will only guarantee 9600 kbps (though most of the time it will support 28.8 or 33). No doubt large cities will get xDSL first, but for it to be rolled out across the nation, someone is going to have to do a massive clean-up of local copper. If this problem has been mitigated, I would love to know, as I would love to see xDSL widespread. Have enjoyed following your posts. jww