<div dir="ltr">Accurate billing is always difficult, surprisingly so. It's quite common from my experiences to have billing disputes because some stupid BYE message was never recorded. Few thoughts:<div><br></div><div>
1. despite the transaction handshaking of SIP, hangup messages can and do get lost (or were never sent).</div><div><br></div><div>2. lost not always by Opensips or your network, but *somewhere* in the chain from caller to callee. I often make it a point to capture & save *all* SIP packets in & out of my switches, so I can audit and cover my butt later as needed.</div>
<div><br></div><div>3. SIP timers (and if handling media, rtp timeouts) can be vital. TCP helps if you can use it.</div><div><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sun, Aug 24, 2014 at 6:49 AM, sguptaau <span dir="ltr"><<a href="mailto:sguptaau@gmail.com" target="_blank">sguptaau@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
I'm relatively new to OpenSIPS but have been able to deploy a few OpenSIPS<br>
installations at our organisation with the assistance of some experts.<br>
<br>
Our environment is of terminating short-duration calls for call-centers<br>
predominantly. In such a case, we haven't been receiving accurate billing<br>
CDRs as the CDRs being generated by the platform have durations that are<br>
inflated by 40-60%.<br>
<br>
It was suggested by someone to enable in-call pings and proxy media which<br>
have also implemented and whilst this has improved the discrepancies it<br>
hasn't fully resolved them.<br>
<br>
Any tips would be greatly appreciated.<br>
<br>
Thanks,<br>
Sahil<br>
<br>
<br>
<br>
--<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br>Ryan Mitchell <<a href="mailto:rjm@tcl.net" target="_blank">rjm@tcl.net</a>><br>Telecom Logic, LLC<br><br></div></div>