Limits on wireless extension cabling - Cisco 927

[Stephen Carter]

We have Cisco 927 routers, C927-4PLTEGB versions, and from time to time we have to install these in locations where the mobile signal strength isn't great - so we are looking at using extension cables. However the 'standard' one is only about 10m long and won't help in certain situations.

So the thought is to have a 'aerial' installed on a roof top or similar, and run a cable down to the ground floor where the router is located. Now we know that the presentation on the back of the router is CAT-4 (the small screwed thread) so here is the question - 

Are there any limitations to the length of the cable from the router to the aerial ?

The plan is to have a 3rd party install an aerial on the roof say, run the cable to the grd floor and leave the cable presented with a CAT-4 end.

Then when we want to use the mobile side of things it would be just a case of turning up and plugging the CAT-4 cable into the back of the 927 and away we go.

[Haydn Andrews · Accepted solution]

As with any RF cabling there will be signal loss. It really depends on the antenna gain, any active boosters the antenna has, and the RF loss of the cable.

I know I have seen this done, but wouldn’t go and run a cable from roof of skyscraper to the ground floor. I always had the telco engaged for it.

[Stephen Carter]

Andrew,
Thanks for the reply, yes, I'm getting a telco to do the work - it was one of our customers came to us urgently with a solution for a problem and needed confirmation.
I'm in the UK, so our customer doesn't have 'skyscrapper' type buildings just, at max, 4 or 5 floors, so I'll pass this information on to them and we can take it from there.
Many thanks for the prompt response.