nanog mailing list archives

Re: 10 Mbit/s problem in your network


From: Owen DeLong <owen () delong com>
Date: Tue, 26 Feb 2013 21:55:52 -0800


On Feb 26, 2013, at 8:23 PM, Nathan Anderson <nathana () fsr com> wrote:

On Tuesday, February 26, 2013 7:58 PM, Owen DeLong <mailto:owen () delong com> wrote:

In fact, many of the hotels that have solved this intelligently have
simply 
placed DSLAMs in the phone room and run DSL to each room with
a relatively inexpensive (especially when you buy 500 of them at a time)
DSL modem in each room.

...or more likely (at least in my own probably limited experience), a CMTS and cable modems instead of a DSLAM and 
DSL modems.  Probably because so many of these hotels have an existing digital PBX system that drives all the phones 
in the rooms which isn't going to take very kindly to sharing its copper with a DSLAM, and because they already have 
coax run throughout the place to drive the televisions.  Easier to share the existing coax with a CMTS than it is to 
stretch a bunch of new telephone wire dedicated just to DSL; I mean, at that point, you might as well just pull some 
Ethernet.


I haven't encountered many CMTS-based systems in hotels where I've stayed (and I stay in quite a few every year).

In most cases, the digital phone system uses 1 pair of the 2-pair wiring and the DSL modem uses the other pair.

Owen



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