Here's the post that's probably going to get nuked, but here goes. This is the Tek Tips forum, not the we'll guide you every step of the way, even if you don't read the manual forum. You start the thread by saying you have 32 extensions. You tell us you have hardware that doesn't exist, and you can't seem to read a manual where all the information you seek is contained. If you had opened the link, you'd have found that there are SIX slots in a TDA-100 box, and either 64 or 128 points allowed in a small or medium power supply, the only ones that fit in a TDA-100 cabinet.
The descriptive names for the cards LCOT 8, DLC 16 and DHLC 8 stand for the number of ports on the card. The pinouts on the ports are fairly clear, first 8 pairs for the trunk card, first 16 pairs for the digital cards, and 8 times 3 pairs for the DHLC card is a Panasonic standard used in all systems since the KXT-123210 box. The point is, if you add up the numbers, you have a capacity for 40 digital and 8 single line extensions, and LOOK AT THE BOTTOM OF THE DIGITAL PHONE. Now plug a digital set into the XDP port and look at the display!
There is a set of manuals to a TDA system, the IM, FG, OM, PCPM, PTPM, and a couple more that don't apply (PPT and SD), along with the maintenance console that is required to program the system.
If you walked into your office tomorrow morning and the phone system had all red lights on the cards and an alarm, would you spend FIVE DAYS trying to fix it? I can walk into your office and add another DLC-16 and program it in less than 60 minutes, plus another 30 minutes to add the cable to the frame. With your demonstrated reading skills, I think you'd still be working on the Installation Manual after 90 minutes.
It all comes down to value. If your time is worth more than learning something badly, then call a professional to expand your system. If you want to pursue this stupidity, look to another forum for help, because this "good 'ol boy" is getting tired of this thread.
All this time wasted and all you had to do was read the linked manual given to you four days ago.....