module functionality

at+cpof and at+cfun=0 are not equal!!!
at+cfun=1,0 reports ERROR :3
if used after at+cfun=0
it works after a at+cpof

firmware 7.4a

ok, sometimes documentation errors and module state confusion are getting the better of me.

but i still don’t understand how it’s possible that every attempt of using at+cpof, cfun=0 and at+cfun=1,0 was giving met CME error 3