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<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2>Hi,</FONT></SPAN></DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial size=2>I've had a bit of a
problem with one way audio, and it happens exactly when I believe it shouldn't
(and works perfectly when I would guess I could have issues.</FONT></SPAN></DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2>Setup:</FONT></SPAN></DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial size=2>GrandStream
GXP2000-------Linksys Router-----------Internet------Asterisk box (hosted
somewhere, fixed IP, no NAT) ----------- VoIP provider
-------PSTN</FONT></SPAN></DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial size=2>When a call comes in
from the PSTN, the call goes all the way to my desk phone (the GXP2000) and it
rings. Audio is clear, both ways. </FONT></SPAN></DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial size=2>When a call is made
from my GXP2000 phone to a PSTN phone (I use my cell and my home phone as
benchmark, they both get the same result) then I get no audio at all. but
ti does rin on the PSTN phone.</FONT></SPAN></DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial size=2>I've tried rerouting
ALL of the relevant ports on my Linksys router directly to my VoIP phone (5060
for SIP, 5004 for local RTP on the phone, 10000-20000 as the Asterisk RTP
ports)....Nothing works.</FONT></SPAN></DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial size=2>What ports am I
missing? Could the problem be entirely something else? Somehow I had
the feelings that calls going out (since they originate from the device behind
the NAT) would not be a problem, but calls coming in could
be.</FONT></SPAN></DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial size=2>I really would
appreciate a hint from somebody who knows better than I do (i.e.
anybody)</FONT></SPAN></DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2>Mike</FONT></SPAN></DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=546080020-06022006><FONT face=Arial
size=2></FONT></SPAN> </DIV></BODY></HTML>