Number of analog cards/ports

How many maximum analog ports that one can support with the single mother board having 3 PCI slot.Also How much it would cost for the digium cards to achieve the same.

maximum on one card is 4

sp 12 analogue ports in total

about $500 per card at a rough guess

~750$ for 2 cards and 8 pcb’s including transport to Bulgaria.
PCB’s are red ones (can you imagine how I hate all thouse FXO/FXS name conventions) and they are around 10$ less than green ones.

From what I have read, you can only use 2 TDM400P cards with 4 ports on each for a maximum of 8 ports. Not exactly sure why you can’t have 3 cards. Probably too much power draw on the PCI bus.

hey i live in india…i have to set up a small pbx with asterisk.
as far as hardware is concerned im looking for tdm400p cards and budgetone sip phones,please tell me whether they are compatible with the telco serviace providers in india