On Mon, 1 Nov 2010 12:05:10 -0700 (PDT) someone who may be Jim K
wrote this:-

http://www.iso.org/iso/catalogue_detail.htm?csnumber=36491.

mmm that link appears to merely offer the opportunity to purchase a
copy of the ISO standard for 200 odd swiss francs?

That link provides me with the information I consider important.
Before the offer to purchase it says

"ISO/IEC 11801:2002
Information technology -- Generic cabling for customer premises"

which gives a clue.

More usefully, though still confusingly, when I searched (before
asking on here), the first hit was Wikipedia which says:-
"The standard was designed for use within commercial premises that may
consist of either a single building or of multiple buildings on a
campus."

so am I to assume that ordinary Cat5 can be used to connect one campus
building to another? or that ISO 11801 is a red herring?

I read that too, before my earlier posting. You wrongly exclude a
third option, that both are right.

"Internal" cable can be used to connect buildings, provided it is
suitably protected from the external influences it will be exposed
to. For example this may be by enclosing it in conduit.

An alternative is to use cable suitable for exterior use. This will
need less or no protection. As I recall this was discussed in the
earlier thread.

I note that you had no response to the other part of my message,
which directly answered the question you claim to be asking as far
as I can

"The cable I referred to has a data sheet at
http://www.netshop.co.uk/downloads/900146/5e%20outdoor%20cable.pdf
which shows it as being marked for exterior use on the sheath. There
is no guarantee that all such cable is marked like that, though I
imagine most is. "





--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000...#pt3-pb3-l1g54