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<p class=MsoNormal>I have a customer with a UC520. They have a SIP trunk setup
which is used for inbound and outbound calling, plus two PSTN lines on the FXO
ports, that used for fallback and because they aren’t ready to get rid of
them yet.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>A few times in the past few weeks, they have found they can
only have a total of two inbound/outbound calls, which seems like the SIP trunk
isn’t working, but when I dial in later on, all seems to be ok. How
should I debug this?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Regards</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Daryl
</span></b><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
<br>
</span></b><o:p></o:p></p>
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