MikroTik

Hi all,
did anyone tried to use ISDN PCI card widely available on the market (Linksys, DLink, etc...) with Mikrotik?
I need to build up an ISDN backup to the wireless connection for a customer: if wireless link goes down, ISDN dial-up starts. Solutions can be Ci$co or MK...

Have used different HFC chipset based ISDN PCI cards for years now (in MikroTik) - never had a problem.
Simple observation: The cheapest were the most reliable ones
Acer, Billion, ...

Best regards,
Christian Meis