[power & the ADSL market]
Hi srvhap,
Sorry for not responding sooner but I'm very busy.
>> Steve, the following are the specs of the Amati home page (tonight). The current set of
specs say the power is 12 watts. It is my understanding that for deployment power
must be at or below 2 watts to make it economically feasible due to the power
requirements of between 600-1000 units at a CO. (please feel free to debate this with
me).
What is there to debate. I agree that power consumption should be as low as possible. The early DMT ADSL systems were used to demonstrate the bandwidth/noise immunity characteristics of the technology and very little attention was paid to power consumption i.e. they were not products. If I remember back to the Bellcore Tests in 1993, CAP systems were at a much higher level of integration (this integration didn't seem to help because they lost the ANSI standard to DMT at this test). Even in the trials, CAP systems have been more highly integrated than DMT systems and therefore consumed less power and (as a side note) were more available. But all that has changed now. DMT chips are available now with more from different vendors on the way this quarter (aren't standards wonderful!). As integration/cost reduction runs its coarse, power consumption will be reduced. I think the CAP camp is raising this issue to mask the performance deficiencies in their technology. Power consumption is not the show stopper that the CAP camp is trying to make it out to be. If it was, regardless of the price per line, DMT would never have won the JPC contract.
For VDSL, power consumption is a primary concern due to required channel density and battery back up at the FTTC pedestal.
As far as your points on DSL Market.
I think the market has less to do with the cost of the modems and more to do with the fact that it is controlled by monopolistic risk avoiders i.e. the RBOCs.
Lets take Ascend for example. They made it big due to the Internet and corporate remote LAN access via ISDN. At the time I got my Pipe 25 it cost $1400.00 with all the bells a whistles. I don't know what the MAX cost at the other end but my point is it wasn't less than $500.00 a line like the RBOCs say they need to make ADSL a viable service. The RBOCs were more than happy to sell a new service that they already had in house but no customers wanted until the internet happened (ISDN). My monthly ISDN/ISP bills are over $100.00 and given the amount of equipment Ascend has sold I know I'm not the only one paying this amount. There IS $$ to be made out there. The problem is that this is a new type of business for the RBOC and they are stifeled. The long distance carriers, ISP's, CLEC, and CAP's (Competitive Access Providers) or any entrapenorial organization will have to push them into it. I think whenever the RBOC finally does provide ADSL, it will be a very well thought out service or group of services.
Later
Steve |
