Yeah, that is good value. I payed just under 60 squids for the 2 of them 6 months ago. The second book pulls all the info learned in the first book together, plenty of eureka moments in it . From my understanding, too many people were failing the ccna exam, so cisco split it into 2 exams, icnd1 and icnd2
For a thorough understanding of ip i would recommend the cisco icnd1 book, available from amazon, or to trully understand the way it all works, the icnd2 book as well. Both excellent books, that relate to the entire ip concept with pratical application to cisco products, but the theory in them relates to all ip products
Yep agree. but unless you get the pressure spot on it crushes the cable. staple guns only have 2 settings, and there is no way of judging the hardness of the particular spot you are driving one into, so even if they had multiple settings, still no good for a coax. when i say crushes, its only a minor change of the shape of the cable that is needed to affect it, so staple guns are a no-no in the coaxial world
Staple guns for 6 core etc = great
but for coax? a no-no imo. if you compress the coax you affect its transmission properties higher up the spectrum, making balancing of systems hard to impossible in some cases.ok, if its only 10 meters of cable, but above that, not worth the risk.
Im speaking from knowledge of large aerial systems, but the principal holds true in cctv cabling too.
Regarding the offer of work, i avoid pj's. work takes up enough of my time lol. urmet will recommend you a local company suited to the problem, if its london i might end up there anyways lol
Only thing i can think of doing now is to try the panel with a different telephone line, preferably a non pabx line. maybe you could run a bit of 3 pair from an outgoing line and test it directly. would need to program in a new telepjone number though. 2 and 5 are the connections you need in a bt socket
sounds to me you got a nasty call for even someone familiar with the gear now, good luck!
To recap on your possible faults:
Psu - unlikely as steady voltage reading if a little low
module - unlikely as 2nd unit with same fault
programming of module- works for 30 mins so not this
cabling- tested by using different pair and butt phone so not this
pabx- resetting made it work once
i know where i think the problem is, but the pabx company say not. if you are still stuck after the above i'd say its time they called in a pro, we have covered everything it could be imo
From the above i note it worked for thirty minutes after the pabx had been reset. if that was the only thing done then it has to be the pabx. try resetting the pabx again, does it all start working again?
If it does, give the fault back to the pabx engineers
And before you wonder, im not permannetly wired into this site, pure fluke i logged in six mins after you posted lol