DSC 832 on Cable VoIP

[tourman <robercampbell@xxxxxxxxx>]

I am currenttly doing an ADT takeover of a DSC 832 Version 2.0 panel
that is on Rogers Cable home phone service and the panel is exhibiting
the following. Programmed in SIA format, the panel will seize the line
and send ONLY the manual test signal (*6, master code, 4) but will NOT
send either keypad panics or alarms. I spoke to DSC tech support, and
their suggestion was to reprogram in the older 4 / 2 format and see if
it works. I checked the line voltage and it seems OK, and changed the
jack and plug just in case...

I'd rather stay with SIA or Contact ID, but I have no idea why the
panel is exhibiting this weird selectivity in sending signals. I spoke
to other dealers of my acquaintance, and apparently they have been to
various factory seminars where they have been told to stay away from
everything except a conventional phone line from the telco. Several
have had these weird experiences as well.

If this is true, and panels will over time stop sending signals
properly on cable, this has serious implications in our area, since
there are whole housing developments ONLY served by the local cable
company. To date I have never had problems along this line, since
cable strictly speaking is VoIP, but never leaves the dedicated
facilities of the cable company (and always seems to work as well as a
bell line other than the need for AC backup)

Anyone have any experiences along this line and a solution ? I'm going
back this week coming and I will likely change the board out and see
if the new one works any better. Presumably, it was working OK when
ADT were monitoring it, but suddenly it decides all on its own to be
selective about which signals it will send.

Weird !!!!