Thanks everyone for your comments and input...on and off list. Much appreciated!
________________________________________ From: TianLun Song [stl...@gmail.com] Sent: March 30, 2009 11:13 PM To: Shidan Cc: Bill Sandiford; Douglas Pickett; biz@taug.ca Subject: Re: [biz] Good DSL service to recommend For every DSL service provider, the service range is based on the footprint of the DSLAM and the loop distance from the DSLAM to customers' modems. the longer the loop is, the weaker the signal is and the less bandwidth the modem receives from the dslam. Allstream's DSL standard is the loop length has to be within 18000 feet and the minimum SNR margin is 6 db On Mon, Mar 30, 2009 at 10:29 PM, Shidan <shi...@gmail.com> wrote: > That's exactly what I'm talking about. As far as I know for the GTA the > dslams in CO's actually don't connect to copper but instead the remote > dslams (OPI dslams) convert the traffic to PTM-TC, not ATM and send it the > CO over fiber where it's optionally interfaced with the providers dslam > again for legacy management systems. I believe this change was made 6 years > ago when Bell upgraded their DSL network to Lucent equipment and hydro's > backbone. That's why I think distance from the CO is probably not a good > measure for the GTA. Bill, I'd love to hear a talk about DSL > infrastructure, > I'm sure most people would be really interested. > > --- > Shidan > > On Mon, Mar 30, 2009 at 1:36 PM, Bill Sandiford < > b...@telnetcommunications.com> wrote: > > > Hi Guys: > > > > I think Shidan was referring to those roadside DSLAMs (they're called OPI > > DSLAMs). > > > > At a meeting in the future I could probably speak about DSL > infrastructure > > and how it all works. As most of you know we operate our own ADSL2+ > DSLAMs, > > but unfortunately with a very limited footprint. > > > > With regards to the CRTC regulatory issues mentioned by Doug, I'm writing > > another email shortly that I'm going to send to both lists. There is a > lot > > going on that will impact everyone that uses DSL for VoIP and I'll give > you > > the quick version (I'd like to give you the long version but I'm too > busy > > responding to the legal briefs to fight this stuff). > > > > Regards, > > Bill > > > > > > -----Original Message----- > > From: Douglas Pickett [mailto:douglas.pick...@rogers.com] > > Sent: Monday, March 30, 2009 12:39 PM > > To: Shidan > > Cc: biz@taug.ca > > Subject: Re: [biz] Good DSL service to recommend > > > > Shidan, > > The major issue with any DSL service is really "the last mile", not > > (usually) the upstream towards the Internet. > > > > The copper loop from your premises (and your DSL modem) back to the CO > > where > > it connects to the DSLAM is usually the bottleneck. There's no getting > > away > > from physics, and the more distance from your premises back to the DSLAM > > the > > weaker the signal is, and therefore the lower the maximum data rate. In > > the > > early days of DSL there were also issues that some circuits had special > > conditioning circuits added to help the voice service, but they would > > degrade the DSL service so that a circuit that should have worked > correctly > > based only on distance would not in fact be usable. Ordering DSL when it > > was first offered was very unpredictable. > > > > Bell has been getting around this distance issue by installing DSLAM's > > outside of CO's, closer to the customer premises - I've been noticing > extra > > little boxes bolted onto the side of many of the roadside junction boxes > > that act as distribution points for Bell's wiring infrastructure, which I > > think are these. > > > > From what I understand Bell had been excluding other ISP's from access to > > this upgraded infrastructure - IANAL, but I believe their position was > that > > the CRTC's rulings that required them to allow other ISP's to access > their > > infrastructure at favourable prices only applied to equipment installed > in > > the CO's. From the non-Bell ISP's perspective this amounted to Bell > > reserving higher performance only for Bell's own customers. I can't > > remember now whether the CRTC was extending (or had extended) their > ruling > > to requiring Bell to offer access to this infrastructure, or whether the > > non-Bell ISP's had merely made an application that the CRTC do so. > > > > Regards, > > Doug. > > > > ----- Original Message ----- > > From: "Shidan" <shi...@gmail.com> > > To: "Peng Li" <lipeng8...@gmail.com> > > Cc: "Adam Ronthal" <aront...@fugue.net>; "Claude Tambu" > > <cla...@i-mailz.com>; <biz@taug.ca> > > Sent: Sunday, March 29, 2009 9:49 PM > > Subject: Re: [biz] Good DSL service to recommend > > > > > > > Actually this is something I have been wondering about myself. Is it > > > really > > > an issue if you are greater than 21/2 miles from the CO in Toronto now > > > days? > > > Isn't all the DSL traffic going out PTM-TC on hydro's fiber network > long > > > before it hits any providers CO or DSLAM? > > > > > > On Sun, Mar 29, 2009 at 9:00 PM, Peng Li <lipeng8...@gmail.com> wrote: > > > > > >> Hi, > > >> Make sure you check with them (Techsavvy or Bell) that your home is > > about > > >> 2 > > >> 1/2 miles to CO, otherwise, no DSL service will be available with good > > >> quality. Cable or Wireless might be the choices left. > > >> > > >> In my area, I tried DSL with Bell and the speed was so slow. They > > finally > > >> figured that my neighborhood is a bit beyond that range and I have to > > >> suck > > >> up with Rogers. I don't like Roger's services of charging so much with > > >> usage > > >> caps. they also creep up the fee. > > >> > > >> peng > > >> > > >> On Sun, Mar 29, 2009 at 8:07 PM, Adam Ronthal <aront...@fugue.net> > > wrote: > > >> > > >> > I have been with teksavvy for 5 years now and been very satisfied. > > >> > > > >> > Adam > > >> > > > >> > On 3/29/09, Claude Tambu <cla...@i-mailz.com> wrote: > > >> > > Morning All, > > >> > > > > >> > > > > >> > > > > >> > > Not sure if I should post in the Business or Tech section, but the > > >> > question > > >> > > looks for business than technical... > > >> > > > > >> > > > > >> > > > > >> > > I'm looking to purchase DSL service for my home office and was > > >> wondering > > >> > if > > >> > > anyone would have a suggestion to make. For starters, > > >> > > > > >> > > I host my homegrown Asterisk box running and mail server. > > >> > > > > >> > > > > >> > > > > >> > > must-have Features: > > >> > > - At least one static IP > > >> > > - Absolutely No port block (e.g. Bell and Rogers blocks TCP 25) > > >> > > > > >> > > > > >> > > > > >> > > It'll also be nice not to pay thru the roof for the said-service > > >> > > > > >> > > > > >> > > > > >> > > I was looking at Techsavvy and I see their service/price offering > to > > >> > > be > > >> > > appealing... anyone has experience with them or could recommend a > > >> > > good > > >> > > company out there? > > >> > > > > >> > > > > >> > > > > >> > > Thanks all and have a wonderful day! > > >> > > > > >> > > > > >> > > > > >> > > Warmest Regards, > > >> > > > > >> > > > > >> > > > > >> > > Claude > > >> > > > > >> > > > >> > -- > > >> > Sent from my mobile device > > >> > > > >> > > --------------------------------------------------------------------- > > >> > To unsubscribe, e-mail: biz-unsubscr...@taug.ca > > >> > For additional commands, e-mail: biz-h...@taug.ca > > >> > > > >> > > > >> > > > > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: biz-unsubscr...@taug.ca > > For additional commands, e-mail: biz-h...@taug.ca > > > > > -- Thank you Patrick Song Thinking globally, Networking locally CCVP, CCNP, M.Eng Cell:1-647-868-2950
