patcat88
join:2002-04-05
Jamaica, NY
kudos:1 | reply to kd6cae
Re: Just curious how long... said by kd6cae:Just curious how long it took to roll out the now very common ADSL and cable networks that are common today? Cable networks usually were built out/finished in 2-5 years since the franchise agreement was signed. The agreements always have rollout schedules inside them, aslong as you meet the density requirements, if a new area meets density requirements in the municipiality, then there is a 6 month or 1 year maximum time in which the cable company must provide service by then, after being notified of the density requirement being met.
Cable internet/DOCSIS came out when you could order analog PPV with your remote rather than calling a number on the screen (2 way HFC network), lets ignore cable boxes that required a phone line to dial up to return PPV orders Satellite TV style.
I would say DSL came to all central offices between 1996-2002. Upgrading RTs seems to have been done between 2000-2006. If you don't have it at this point, you never will have it from a Baby Bell ILEC. All areas that would ever get it from a Baby Bell ILEC will have gotten it by now. They've gotten all the profitable DSL areas already.
Upgrading a CO for DSL is easy as pie, slide in the DSLAM racks, plug in a cable from the master frame, patch POTS lines as needed to block going to DSLAM. All COs got fiber back in the 1980s/at latest early 1990s when all the telephone switches got upgraded to digital switches from analog switches.
RTs are a WHOLE different story, they almost always need fiber directly to the RT DSLAM, bonding copper T1s for a DSL RT is nearly suicide and will cause over subscription problems from hell. Traditionally, RTs were T1 fed, 24 phone lines jammed into 2 copper pairs. Another less common solution for RTs that were far away and the telco didn't want to put T1 repeaters on the poles, was a ISDN RT, 2 POTS lines on 1 ISDN pair back to the CO. In some cases RTs were analog RTs, with a 2 POTS lines on 1 analog pair system (dialup will never be above 24kbitps BTW), or frequency division muxed coax from the analog RT back to the CO (each direction of voice on each line became an AM radio station going down the coax to the CO). Say hello to static.
So yeah, bringing fiber to the RT or replacing the cabinet because the RT is proprietary and no upgrade kits exist is the biggest challenge of bringing DSL to an RT, COs are easy as pie. |
