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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have a FreePBX system with PRI trunks that’s doing a
number of things very nicely, but frustrating me in one area.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am using a Grandstream GXW-4008 in an off-premises
location to provide “POTS” service on four ports (this device
worked fine in an early application using a hardware VPN to the Asterisk server).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The Grandstream has a public static IP port, as does the
Asterisk server.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Extensions 1021, 1022, 1023, and 1024 register just fine.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>A ring group, 1020, distributes calls to these extensions
and they handle incoming calls “in hunt” as I’d expect.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Calls on the first port are consistently fine.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Calls on the other ports are fine for a day or more, then
they lose audio or have one-way audio.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>One mystery for me is that the first port always continues
to work.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’ve assumed that this is some sort of UDP port
problem, but I’ve Googled and studied stuff on-line and haven’t
figured out what I should be doing to fix it.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’d really appreciate some help.<o:p></o:p></span></font></p>
<p><font size=2 face=Arial><span lang=EN style='font-size:10.0pt;font-family:
Arial'>--Don</span></font><span lang=EN><o:p></o:p></span></p>
<p><font size=2 face=Arial><span lang=EN style='font-size:10.0pt;font-family:
Arial'>Don Kelly</span></font><span lang=EN><o:p></o:p></span></p>
<p><font size=2 face=Arial><span lang=EN style='font-size:10.0pt;font-family:
Arial'>PCF Corp<br>
People Come First<br>
651 842-1000<br>
651 842-1001 fax</span></font><span lang=EN><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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