Yes and no .. I have had parts of the same problem. Because of my own dial plans I first overided (without my knowledge) all of the numbers that begun with a star. When I realiced this I changes my plan a bit (so all digits in the plan had to have et least 5 digits (XXXXX) so there should be no conflict with the default existing numbers) After that I were able to record and play bach voice messages via the telephone adapter and the standard function of the system. I found these numbers by reading the the default configuration file and the commenst there.
You can make some testing using the echo test and line bussy test. (Did not write down there numbers, onlu used them from the configuration file.)
One other useful chech is to go into ssh shell and write the command "asterisk -vvvr". This gived a lot of info about activity.
I got the "automated receptionist function" to work with most of the tested incomming ip telephony lines. This function did not work for one ip telephony vendor that use a bit unusual format on tha register string. This norwegian wendor gave a problem with this function:
http://www.televoip.no On the other hand "the line" this American vendor worked very nice:
http://iax.cc There was some bugs, but I still think this American vendor can be higly recomended.
Info just to indicate thet problems to make the automated reseptionist to work also could be related to the format of the register string og some other more vendor specific problems.
I don't remember at the moment where the sound files are stored. (I think I did find them, but just dont remember now. Will leave a msg if I see them..)
Are your Asterisk@SME running bug free ? Mine were until I decided to replace all the default configuration files with new manually edited files. It stopped working then, even though I had tested the files on a "clean" Asterisk@home.
For me Asterisk@SME have worked 100 % and without a bug as long as I used the standard configuration tools "the right way and as expected".
By the way .. has reinstalled it again.
Best reg Arne.