Hi all. I?ve been around looking on the wiki and past discussions of this list to find out witch is the best prepaid solution to put to work into my environment. I have a Pentium 4 machine with 1 TDM400P with 2fxo, fedora core 2 and a very nice running asterisk. I need a prepaid solution to put my SIP/IP users to use the pstn line with certain limits, and It is mandatory that they could be "automaticaly" authenticated - I mean, without the need to dial long-boring PINs. AreskiCC The main problem into areskiCC - for me of course - is that it uses postgre. I dont want to install it into my system, since I do have mysql installed and running. I?m not sure if areski can do the autentication based on the from field (my_user@my_domain.sip) of the SIP messages. Do you know if it can do that? AstCC x CallingCard Apps I?m with serious doubts about if it?s more interesting to use astcc or callingcard applications - http://www.voip-info.org/wiki-CallingCard+Applications - to get what I want. Callingcard seems to be lighter and right-to-the-point, in comparison with astCC. First of all, I don?t know if the calling card "Authenticate against CallerID" feature is the one I need to authenticate against the from field of the INVITE SIP message that will ask asterisk for a PSTN way out. Do anybody knows or used that? If somebody could give me some clues about prepaid environments and it?s experiences I would be very gratefull. Thanks in advance. Regards, Ricardo Poppi