B2BUA will give you more control. FreeSwitch is great choice.<br><br>You can look at this project: <a href="http://vbilling.org/">http://vbilling.org/</a><br><br>I did not try it myself but it looks interesting and if it stable enough it can can fit in your setup.<br>
<br><br><br><br><div class="gmail_quote">On Thu, Jan 5, 2012 at 6:08 AM, Carlo Dimaggio <span dir="ltr">&lt;<a href="mailto:jaasmailing@gmail.com">jaasmailing@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

  

    
  
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    <font size="-1"><font face="Arial">Hi all,<br>
        <br>
        I&#39;m working in a project for a service provider in which prepaid
        is an essential requirement. They have about 12000 subscribers.<br>
        The core infrastructure will be Kamailio+RTPProxy while I have
        some doubts about the prepaid feature. I&#39;m thinking about a
        B2BUA (SEMS or Freeswitch) that is called if the user belong to
        a &quot;prepaid group&quot; and perform authorization and accounting; in
        this case the SIP flow could be: Kamailio -&gt; B2BUA(Prepaid)
        -&gt; Kamailio. Is a good choice?<br>
        <br>
        At the moment I cannot estimate the effort needed to develop
        this section (base prepaid feature) of the project... Do you
        have some hints?<br>
        <br>
        What are the prepaid solution implemented by you? Do you use
        your own developed solution or do you think that is better to
        choose a commercial solution (that provide also calling-card and
        other features)?<br>
        I have seen some commercial products (Portabilling,
        Jerasoft/Bilberry, ...); what do you think about?<br>
        <br>
        <br>
        Best Regards,<br>
        <br>
      </font></font>
  </div>

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<br></blockquote></div><br><br clear="all"><br>-- <br>-- <br>Vitaly Nikolaev<br>