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<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Hi
All,<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>I've
an Asterisk Server behind a NAT.<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Using
DNAT, I've opened port 5060 and all 10000:20000 udp.<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Sip configured
with externalip and subnet.<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>I've
another site, also with NAT, where I map the rtp port (as defined in the
client) to map to the local client (DNAT).<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Using
Xlite, this configuration works, it requires using the quality=yes and NAT=yes/always
in the sip ext configuration but works quite well.<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>However,
lately I've purchased a Grandstream ATA Handytone 286 and tried to apply the
same settings but…<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>When
doing an echo test, I can't hear myself, but I can hear the asterisk server
(meaning asterisk can reach the client behind the NAT).<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>When doing
some tcpdump, it looks like some packets are coming from the client to
asterisk, so the network setting looks ok.<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>When calling
to another sip device, with or without canreinvite (yes/no) the rtp stream is
unable to establish it self, no matter where the second client is
(inside/outside NAT).<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>But! When
calling using a zap channel (which is on the asterisk server) everything works!
I can hear the person I'm talking to and he can hear me.<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>I'm a
bit confused….. How could it be that this works and echo test doesn’t?<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Any
help would be appreciated!<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal dir=LTR style='text-align:left;direction:ltr;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Ohad<o:p></o:p></span></font></p>
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