For those who are interested in the technical side: here are photos and diagrams. They show the JWI's (Jumper Wire Interface) which contain the in-pairs direct from CO, the x-connections to the out-pairs to the clients, photos of the stingers bolted onto the JWI, photos of standalone stinger (on a pedestal, not bolted to the JWI), the inside of the stinger showing 3 cards which handles a max of 48 clients each, the power supply at bottom which converts the +190 and -190 volts (380 volts total) fed by ordinary cable pairs from the CO, fiber patch cords and laser interface card, cable pair protection also known as heat coils, they do not show other types of remotes which handle high speeds, they do not show the POTS remotes nor the remotes which handle both POTS and high speed service.
ADSL2+ DSL Remote Concentrator
New JWI's are installed all the time, when competition entered the market JWI's were installed often in the yard of the CO which I thought was ridiculous at the time but was told it was necessary for the competition. New JWI's mean new cables, and all cables specially the oldest air pressurised paper insulated cables are replaced as needed. The equipment in the CO is constantly being upgraded and replaced always ahead of upgrades in the field, there is simply no advantage to being next to a remote vs. being next to the CO. The CO is located in the business section of town or in the densest population sections of town, it makes financial sense to always upgrade there first. When newer equipment is installed permitting higher speeds, clients are transferred to the newer equipment and the old equipment is sold. If/when clients want to increase their speeds all it takes is to tweak the speed limiting software; all this reduces Bell's operating costs. It is all about the financial bottom line.
Even though various sources would like to define DSL and other similar terms as they see fit, these terms are defined internationally by agreed upon standards. For example DSL refers to a family of technologies (ADSL, ADSL2, HDSL, VDSL,ETC). ADSL2 has the international standard ITU G.992.3, HDSL is a T1 line on cable pair (1.544 Mbits in both directions) etc. A quick wikipedia search would confirm.
Back on topic:
I remember way back, I was limited to 3 Mbits (it may have been lower initially but I am uncertain of my memory) and one day it was suddenly increased to 6 Mbits, no notice, nothing, came as a complete pleasant surprise, and this change was NOT after hardware upgrades in the CO, it was solely from their speed limiting software. This speed increase can be explained by the terms of the "Sympatico High Speed Edition service and hardware leasing agreement" quoted in a previous post in this thread. As I understand that quote, Bell will always give the best possible speeds and any limitations (software or rented modem) is contrary to the agreement.
BTW, the agreement does not mention technology used, no mention of DSL or any xDSL, it does not mention any possibility of speed limits, it does not mention "subject to change" in the performance levels section. The agreement refers only to their high speed service.
I do believe Bell may have shot itself in the foot with their agreement and no easy way out other than abusing their clients.
So yeah, after some 15 years of limits, I am quite upset and would participate in a class action lawsuit.
The process of changing ISP's has begun by notifying 20 years of accumulated email contacts of change of address. (sympatico was my main email account)