Re: DSC 632 1555MX & TLM troubles

[G. Morgan <alarmpro@xxxxxxxxxxx>]

On 29 Jun 2006 20:17:53 -0700, jason.norred@xxxxxxxxx wrote:

>
>I have a DSC Power Series 632 system with a 1555mx main board. The
>system is monitored and TLM is enabled. I am getting a Trouble Code #3
>whenever my phone line goes off hook. The trouble disappears when the
>phone goes back on hook. The monitor company is getting messages all
>day long about phone line being restored. I check the incoming voltage
>for T&R on the panel. I have 50v dc when the phone is on hook and about
>6.5v dc when the phone is off hook. The system communicates just fine
>with the monitoring company. I am only having problems when I am trying
>to use my shared phone line.


50 VDC is more than adequate (above the threshold) for on-hook.  Do
you have any devices connected to the line that might drop the voltage
such as FAX, Modem, or caller-ID units that might be acting flaky?
Unplug them one at a time to diagnose it.  Also check for oxidized
wiring at the NID outside - (green copper).   Make sure all the phone
connections are good.


The off-hook voltage should be ~ 23V which leads me to think the
device you tested it with may be drawing too much current (6.5 as
reported is too low which will trigger the TLM).  Test all the
telephony devices one at a time with a voltmeter lifting each  one
off-hook.



--

-Graham

remove the double 'e' to email me.