My scenario is like that..

UA----->OpenSer(Outbound Proxy)---------Register Server

                      |                                                                          |

                      |                                                                          |

         Asterisk(codec converion)----------------------

The UA will register to Register server through outbound proxy OpenSer. When UA makes call it first comes to Openser, OpenSer should route the media to Register server through Asterisk for codec conversion. OpenSer will not hold any User account rather it will act as a proxy.

The way I am thinking.. Openser could be used as outbound proxy that’s fine. If it were used as outbound proxy, can it also route the media? In the asterisk side I may need username/password pair of UA to dial to Register Server in the second leg. Can I read the User/Pasword from Openser after UA is registered to OpenSer. I can have both OpenSer and Asterisk to reside on the same machine with different IPs so they can access the database if required..