ENG,
Please read this carefully!!!!
First, basic primer, your PDKU is a STATION (phones)card. Your RCOS and RCOU cards are LINE cards (phone lines in).
The PDKU is an 8 port STATION card. 14 x 8 = 112 STATIONS (phones).
We need to know how many lines in. How many RCOU and RCOS cards?????
Whether or not you have open slots, you might not be able to use them for station cards!!!
The system (and per box) capacity is determined by the number of lines in and the number of stations.
WE NEED TO KNOW THE NUMBER OF LINES IN OR WE CAN'T HELP YOU!!!
Look in the cabinets for cards that have what appear to be phone jacks on them. The "jacks" will appear in pairs. If you are lucky, they will appear in groups of 4, meaning that you have RCOS and RCOU cards in together.
Each "jack" represents 2 phone lines into the system.
So... If you have 2 RCOU cards with RCOS cards attached, you have 8 "jacks" giving you 16 lines in.
The 424 cabinets will almost always have open slots, even when they are completely MAXED OUT! The extra slots are usable for cards other than station and line cards.

[This message has been edited by paul144 (edited June 20, 2003).]

[This message has been edited by paul144 (edited June 20, 2003).]