hi
i have a small voip system
i have a 3640 router with 16flash and 64dram and 2(NM-2V+2fxo) , this system work less than 24 hours and after 10 or more hourse the fxo doesnt answrer tha call.
my friend told me that it may be the IOS bug,i use c3640-is-mz.122-8.T4 ios , can u offer me a better ios or guide me how to solve it?