Special communications cables. One of the many reasons I like IP based communications systems. The manufacturer will usually have a Belden part number listed in the specs.
Hold onto your wallet....Specialty Wire
Did you open up the nurse call station to see how many pairs are being used?
9 pairs sounds abnormal to me - a nurse call system would typically have a pair for power and another pair for communications (RS-485/422 or some other similar communication protocol, perhaps proprietary). Maybe also a few pairs for relays or alarm inputs or something but... 9 pairs? This sounds like a wire that was installed that allowed for expansion in the future and would have a number of unused pairs. Or that they are used for something other than just the nurse call system.
I would verify both ends of that cable to be sure that there is nothing else connected to the wire before you decide to move anything. If the current nurse call station is only using the 2 pairs (power and communication, 22 AWG twisted/shielded), then you should check the minimum specifications from the manufacturer as to the cable type and use exactly that. I would be very surprised if the actual manufacturer cable spec was for a 9-pair twisted shielded 22 AWG cable for a nurse call.
Chesapeake & Midlantic | 10/27/15 04:41pm
Sounds like Belden 8774 060100. Expect to pay ~$560 online.
Also consider Aiphone 82222050C. It's shielded 22AWG 20 conductor. You can find it for just over $400 at this camera store I know.
Chesapeake & Midlantic | 10/27/15 05:43pm
Conductors 1-10: station identifiers
12: Call Receive
14 and 15: positive and negative power
16-18: All Call (if used) and door strike release
Also, Aiphone puts out the best installation manuals in the low voltage industry.
It depends greatly on the nurse call. If it is an old tone and light system many of them were hard-wired with no real communication bus. Each button, light, audio channel, and so on had its own set of wires. What nurse call system is it?
Im not sure that the brand of the nurse call, but I finally found a bit of wire that had the jacket still on it.
The brand of the wire is West Penn Wire #3655. Adi Prices it out at $299 per 500 feet.
Cornell was big on weird pair counts because, as Austin says, there was no communication bus. There was a dedicated wire for pretty much every function at every station. Also, if you had more than one annunciator, you needed a multi-pair between them with enough pairs for each station. It was a logistical nightmare and everyone I know hated estimating, installing, and servicing it.
Executone maybe? Installed one 20 years ago and all of the cable was proprietary.