bout mosquitoes, I'll tell you more than you want to know.
Technology I enjoy and pick up mostly by osmosis.
The terms I mentioned are just ones that I have read in the paper also. It seems to me that the future of broadband connectivity is still up in the air and I'm trying to get a sense of how it's going to shake out, for obvious reasons.
I don't believe satellite or wireless will be the answer for the masses, at least not in the short term.
I thought cable was a lock, but someone on this board recently posted some real interesting downsides to cable that I wasn't aware of. I'd appreciate more info from him, too. (Is his name Caledonia? Or is that a B.B. King song)
Anyway, I thought U.S. West was incredibly foolish for jettisoning Media One with all it's cable only to be snapped up by AT&T who is now going to compete with U.S. West not only for Internet Access, but for local phone service too.
U.S. West is I think betting on DSL, through the telephone line. My naive assumption is that the telephone line is thinner than cable, therefore you can cram less bandwidth info a phone line. Not so maybe, I would like for someone to explain. My understanding of U.S. West's DSL is that you have to have an AOL type ISP account (56K) for the uploads AND the DSL account for the downloads (at 256K or whatever it is). For $40 or $50 a month. That's not a viable option in my opinion.
So that leaves what ADSL?, ISDN? Someone please shed some more light on these technologies.
Digital Subscriber Line (DSL) technology is an outgrowth of ISDN technology where the analog copper loop is turned into a digital mechanism all the way to the home/business.
HDSL- Highspeed Digital Subscriber Line puts a T-1 on two untreated copper pairs (T-1's used to require special line conditioning) and has been around the longest (speed 1.5Mb= bi-directional)
HDSL2 or HDSLII does the same thing on a single copper pair
ADSL- Asymetrical Digital Subscriber Line- On one copper pair transmits upstream and downstream data at different rates- Up to 8mb downstream (depending on length and condition of the pair) with lesser rates upstream- Currently requires filters at the service point (translates to truck rolls for service providers)
Universal ADSL- aka G.Lite- same basic technology as ADSL but limited in downstream bandwidth to 1.5Mb- Service provisers love it because in most cases filters are not required- therefore, no truck roll.
VDSL- Very high speed DSL- Provides up to 50Mb downstream according to copper loop length. I believe the limit is around 1500 feet for full speed and drops off quickly as loops get longer.
The family of technology is sometimes referred to as xDSL.
All of the technologies are evolving rapidly, thereby, increasing speed and distance while decreasing the need for filters and truck rolls.
Does anyone know how the licensing agreement with TLAB for Cablespan is structured?
I have looked through the 10K and '97 and '98 annuals... I
looked through TLAB stuff... and this is the most I have come up with (TLAB 10K):
"The Company is also involved in product-oriented alliances. In
December1996, the Company and AFC, a Petaluma, California-based
provider of next-generation digital loop carrier equipment, terminated the joint venture agreement signed in April 1994, and entered into a licensing agreement for the development, manufacturing, and marketing of the CABLESPAN product. That agreement was modified in early 1998 to expand certain of the
licenses and market rights. '
H&Q shows Cablespan revenue to TLAB like this: '96: $ 4m.....'97: $ 16m....'98: $ 23m....'99: $ 75m....'00: $ 110m
technology - except with all those letters i feel as though i'm at the o.j.trial during the dna questioning!!!! All kidding aside the way you explain things we lay people get a general idea of what this new technology is all about...thanks again for imparting all your knowledge on the board. Also if that message about the cable thing is true - i'm not getting cable - i'll stay with the phone modem.