[Serusers] Smoothly transition from only Asterisk to Openser plus Asterisk

The last week__s I tried to insall webser on a machine other than my asterisk box. I cannot make it!!! My next attempt is to use my Asterisk box for openSER and Asterisk. I will install openser and webser first with listening to port 5062 instead of the usually 5060 SIP port. Than I will test openSER and serweb. So far, I believe I can make it, but for the next steps I need some help. What is the easiest way to get the Asterisk users into SER? I want to swap in Asterisk the port 5060 to 5061 and from openSER the port 5062 to 5060 AND forward all calls to Asterisk. What do I need to do for that? If the user is registered in Asterisk AND in SER, than he will get a different context, while if only in SER, than he should only get [from_ser] which means only local calls. In addition I want to allow for SER users ENUM and DUNDI. I found a module ENUM, but I did not find a DUNDI module. Any ideas, suggestions or recommendations for my path? BTW, I read many docs about SER and it mentions iptel.cfg in the etc directory, but I do not have that example. Where can I get this one? bye Ronald Wiplinger