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3300 cannot change ONS/OPS descriptor to Long

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Wendelspanswick

Programmer
Jul 1, 2010
35
GB
We are having problems with two cordless phones we have on one of our sites, the cordless phones run off of a peripheral cabinet and are located on nursing stations.
Each cordless phone has a parallel socket and switch attached with an auxiliary sounder in the parallel socket. During the day the cordless and the sounder ring, at night the switch is flicked and the sounder no longer rings. We have used this setup on countless sites with numerous phone systems and had no problems.
We replaced a Toshiba system with the 3300 and immediately the staff reported problems with the cordless phones. We substituted the cordless phones but no joy.
The cordless phones ring and can be answered but the the voice reception is barely audible. Socket wiring is fine.
To solve this I have tried to change the circuit descriptors on the two phones in question to Transmission:Long Balance:600 (also complex), to boost them, but when I try assigning the descriptor to the phones it comes back with invalid circuit descriptor.
I tried changing the circuit descriptor after it had been assigned but it reports back that the circuit is active, tried Busy EX then changing but same result.
Any clues?


Have you tried turning it off then on again!
 
Select "Short" or "Long" to indicate the card type to which the circuit descriptor is associated.
Select "Short" for ONS lines
Select "Long" for OPS lines.

ONS vs OPS = 2 different card types

The primary difference is the distance limits.

ONS provides 24V for 16 ccts
1500 m (4875 ft), 26 AWG (27 IWG)
3800 m (12350 ft), 22 AWG (23 IWG)

OPS provides 48V for 8 ccts
5850 meters (19200 ft.), 26 AWG (27 IWG)
15240 meters (49530 ft.), 22 AWG (23 IWG


**********************************************
What's most important is that you realise ... There is no spoon.
 
Have you eliminated the cordless part by trying a standard telephone in the socket, I know they worked before but circumstances change, I would do this before any programming changes.
 
There is also the possibility that modifications were made to the line/phone to make it function on the old system that are impairing its use on the new system.

**********************************************
What's most important is that you realise ... There is no spoon.
 
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