We are going to have 3 more leased line link and 2 more BRI link in our current router(3825). at the moment we have only 2 serial port available in the router which is Mueslix-4T Port adapter, 4 ports (WIC 4T) and no bri ports available . we plan to buy 4 port ISDN bri card and 2 port WIC 2T (small serial) card or 4 port WIC 4T . Can we insert WIC 2T card in the slot? but will our router support to add in it? back plane speed support? IOS support?
Please find attached the sh ver and sh diag of our router. pl guide me to go about it.