DSC MD12 modem connection problems

[Tower Security]

I have a DSC MD12 modem and it seems I often fight with getting a
working connection to panels that I know are programmed properly...in
fact if I go back to DLS1 and a 1200 baud modem on exactly the same
panel and I connect without issue. This is all fine and good except
for those panels that can only be downloaded via DLS3 and the MD12
i.e. 1555mx. I've tried forcing the baud rate in the DLS software to
various different settings and no joy. Interestingly enough if I have
a tech on-site initiate a download it typically works fine.

Have I got a bad modem? Any other suggestions?

 

[Buggs]

I have a DSC MD12 modem and it seems I often fight with getting a
working connection to panels that I know are programmed properly...in
fact if I go back to DLS1 and a 1200 baud modem on exactly the same
panel and I connect without issue. This is all fine and good except
for those panels that can only be downloaded via DLS3 and the MD12
i.e. 1555mx. I've tried forcing the baud rate in the DLS software to
various different settings and no joy. Interestingly enough if I have
a tech on-site initiate a download it typically works fine.

Have I got a bad modem? Any other suggestions?

I'm using a Hayes Optima 2400 external on DLS 2002 with no issues.
js

 

[Nick Markowitz Jr.]

Do you have DSL I found the modem does not like it.even if you have filters
in place.
works fine on non DSL line.
the dsc modem does apear to be poorly designed becuse DSL is not an issue
with any other modems i use.

remeber DSC stands for DiSConnected

 

[Tower Security]

Yes to DSL on line. That could be it. I'll test this by dialing out
on a non-DSL line to a panel without call-back enabled.

To the other question, I've typically use the double call. The panel
picks up, says waiting for connection and then seems to time-out
saying panel could not be identified.

I've also picked up another MD12 so between the non-DSL line and brand-
new MD12 I should be able to narrow this down some.

Thanks for your help!
Reg

 

[tourman]

I experience the same problem continually when dialing in on a non DSL
line as well. I also know my partner has the same problem when dialing
in to his panels on a rural line. DSC tech support's only suggestion
is to make sure we have the latest drivers for the DSL software, but
can't offer any real assistance past that point.

In most instances, the panel will answer but the software gives the
message "cannot identify panel". In others, the panel answers, but the
line degrades to such a point that the panel finally hangs up (green
line goes yellow, then recedes before hanging up).

This happens with either of two different MD12 modems that I have, so
I doubt it is a defective modem. It's a real PITA.!! If you solve it,
let me know. I've lived with this problem for years....

R.H.Campbell
Home Security Metal Products
www.homemetal.com

 

[Buggs]

I experience the same problem continually when dialing in on a non DSL
line as well. I also know my partner has the same problem when dialing
in to his panels on a rural line. DSC tech support's only suggestion
is to make sure we have the latest drivers for the DSL software, but
can't offer any real assistance past that point.

In most instances, the panel will answer but the software gives the
message "cannot identify panel". In others, the panel answers, but the
line degrades to such a point that the panel finally hangs up (green
line goes yellow, then recedes before hanging up).

This happens with either of two different MD12 modems that I have, so
I doubt it is a defective modem. It's a real PITA.!! If you solve it,
let me know. I've lived with this problem for years....

I have seen the line degradation issue a few times, and it seems to occur
most often when downloading text to LCD keypads. I'm using a Hayes Optima
2400 though, so it's not just the MD-12.
js

 

[Buggs]

I use the Cardinal MB2400EX, Securcomm DL110, Hayes 1200 07-000038 &
Practical Peripherals PM1200SA Mini. I tossed the MD12 a while ago.

Jim Rojas

Speaking of modems, does anyone know if I can use my Hayes 2400 Optima or
Practical Peripherals PM1200SA to UL/DL a Silent Knight fire panel, or do I
have to use their modem?
js

 

[Doug]

Which SK panel ?
The 5208, 5700, 5808 & 5820 all can use pretty much any modem. I use a
generic internal fax modem without any problems.
I haven't downloaded a 5104 but I believe it uses a proprietary modem

Doug

--

 

[Tower Security]

Have you tried a different modem than the MD12? I've yet to ever see that
happen and we have some shitty phone lines around the US

So what modem are you using with the DSC panels and DLS-3 software?