Hi all,
    I use the document to build l the system with openser+freeradius+mysql(http://www.openser.org/docs/openser-radius-1.0.x.html ),

   
     +---------+                                                                                  +---------+
    | PHONE 1 |  <--SIP--  +       +-------------------+                            | STORAGE |
     +---------+                            | SIP SERVER  |                              +----+----+
                            #===>         |   (OpenSER)   |                                  |       
    ...........        |                      |-------------------|                               +-------+-------+
                       |                      | RADIUS CLIENT|<==AAA==>   | RADIUS SERVER |
    +---------+      |                      | (radiusclient-ng) |                          |  (FreeRADIUS) |
    | PHONE N   |<--SIP--+          +-------------------+                            +---------------+
    +---------+
 

   I have two linux PCs.the one install Openser and radius client ,and another install freeradius and DATABASE of mysql .But the document said the Openser also need mysql ,then I have a question, what is the function about the mysql of openser? Maybe it can place the users inforamtion of register,but for freeradius, what about the function ?

    Then I have another question,I install the system step by step with the document ,and the ua can register correctly,but a few minutes

it will break down, the ua said it's time out ,can you give me some suggestion ?can I find other openesr+ freeradius documents except 

openser-radius-1.0.x.html  .

                                                                                                             thaks.