[COLUG] Opinions on AT&T uverse in Dublin area

[Mark Erbaugh]

A non-technical friend of mine has it and I'm trying to understand how
it works.

He has twisted pair (presumably CAT5) going to a modem/router. From the
router there is CAT5 going to the converter box for the "main" TV.  He
has two other TV's each with its own converter box, and thought they
said he could have up to 5 total, each with it's own picture, although
only one can be HD at a time.  There is a converter box at each
satellite TV, but the cable going to it is coax not CAT5.  I'm not sure
whether the coax originates at the router or the "main" converter box.

What is on that coax line? Why isn't it CAT5?  I'm just curious.\

Also, are all the channels brought to the house or does selecting a
channel tell the system to stream only the selected channels?

Is there a link that describes the technical details?

Thanks,
Mark