sundance-communications.com/forum Forums TDM Business Telephone Systems Comdial Telephones & Systems dx80 expansion card limits

Ah..never considered that it was possibly a space issue as to why the docs say two max per cabinet. Your standoffs on the corners is a good work around. BTW what was the application that required so many 2500 sets?

If I remember correctly, the APM4 that comes with the KSU has a different ribbon connector than the APM4 that you order individually. The one that comes with the KSU, has a 30 pin connector and can only plug into the dedicated Slot 4 ribbon cable (soldered to the main board). The APM4 that you order individually comes with a 50 pin ribbon cable that you can plug into J2 or J3, just like the DPM8.

Deltron, are you making a 30 to 50 pin cable? If so how?

Ive used two APM4's a couple of times, but never had an application where I needed three.

I just went down to my local electronics store and picked up some ribbon cable and the appropriate connectors.

I installed a DX-80 with 8 CO lines, 16 digital sets, vmail and 23 single lines for a paging and 911 only application in an extreme high noise environment. I used standard wall sets with confidencers. It was a cheap solution

Thanks for all the help guys!!!