David Kaiser <dkai...@cdk.com> wrote: > I understand that you prefer SDSL over the asymmetric consumer options > most of us have at home.
Yup. > I guess I may have been under the assumption > that SDSL was limited in speed, It is. A single SDSL circuit maxes out at 2.3 Mbps in theory or 1.5 Mbps in practice (hardware capabilities vs. what Covad's network actually offers). One can also bond several of them with MLPPP. The proprietary closed source Adtran CPE which Covad-MegaPath pushes can MLPPP-bond 2 of them for 3 Mbps symmetric. My modular open source solution has no limit on the number of loops that can be bonded, but I use 8 as a rule-of-thumb maximum: that gives 12 Mbps symmetric. (Unbundled dry copper loops are dirt cheap to CLECs, so having them run 4 or even 8 of them to deliver a single logical circuit is not beyond the realm of possibility. But past 8 loops it gets really unwieldy.) While my OSDCU is not yet at the point where it can convert SDSL/ATM to HDLC at the full 1.5 Mbps rate, there is an existing historical CPE device that does the same function (convert SDSL/ATM to V.35/HDLC). I don't think that Paradyne unit is made new any more, but from what I gather the SDSL operator in question has a decent stash, and we should be able to soc-eng access to that stash if it means business for the ISP. If someone really wanted to get symmetric 6 Mbps or 12 Mbps service from Covad-MegaPath (or some other ISP that goes through them at Layer 2), we could probably make it happen today. It isn't something they officially offer (again they max out at 3 Mbps because they chose the wrong CPE vendor), but we could apply pressure. Make them dig out some of those Paradyne units from their stash, and I could build a custom rackmount chassis that holds several of them and provides a common power supply, so there is just one AC power cord going in. Then take an Ebay-sourced Cisco 3600 router (or an open source router of your choice) and connect it to the multi-DSU with V.35 cables. Voila! > and that it was not going to ever match > the speed of the assymetric choices, such as FIOS, UVerse, or even > traditional ADSL. Probably not, although 8-loop-bonded 12 Mbps might get you somewhat close. > Are you saying SDSL is better for home users? Not for consumers, only for purists. > Does > it provide greater bandwidth for downlink and uplink speeds? No, it doesn't. I view SDSL as a less expensive version of a T1. Some people (such as me) have a fundamental philosophical objection to using *any* consumer-oriented technology. That leaves people like me with only two choices: T1 or SDSL. SDSL is less expensive. > Would you > say it is primarily better for users that want to run their own services > from home, versus maybe not the better option for consumers of > hosted/cloud services such as gmail.com, etc.? That's right. I am disgusted and sickened by the transition of the Internet from the community-of-equals model to the model of content providers and consumers, and I refuse to participate in it in any way. Therefore, as a matter of principle I use connection technologies that are designed neither for consumers nor for datacenter-based content providers, technologies that are better suited for the community-of- equals model. > Also, do you think when I demand the SDSL provider use a Harhan CPE, I > would also be able to demand that they provide me one that doesn't > include the Communist Party logo etched into the circuit board [1] ? Ahh, ignorance... It is NOT a Communist Party logo, it is the quality symbol: http://en.wikipedia.org/wiki/State_Quality_Mark_of_the_USSR It means "this product has been built to the quality standards of the USSR." > Is that something you're going to remove when you respin the board design? No, I am quite proud of the fact that my products meet the quality standards established by the country whose values and ideals I continue to uphold. MS Hold the Heathen Hammer High! With a battle cry! For the pagan past I live and one day will die. http://www.youtube.com/watch?v=fu2bgwcv43o _______________________________________________ LinuxUsers mailing list LinuxUsers@socallinux.org http://socallinux.org/cgi-bin/mailman/listinfo/linuxusers
