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<DIV><SPAN class=328001916-07042004><FONT face=Arial color=#0000ff size=2>Then
your firewall is closing the return RTP port to fast. Check for the
latest firmware and also make sure the SPI (stateful packet inspection) is
turned off if you router has that option. Otherwise you may have to give
up and fall back to port forwarding.</FONT></SPAN></DIV><!-- Converted from text/plain format -->
<P><FONT size=2>----------------------------------------<BR><BR>Michael Shuler,
C.E.O.<BR>BitWise Systems, Inc.<BR>1301 W. Pioneer Parkway<BR>Peoria, IL
61615<BR>Office: (217) 585-0357<BR>Cell: (309) 657-6365<BR>Fax: (309)
213-3500<BR>E-Mail: mike@bwsys.net<BR>Customer Service: (877) 976-0711
</FONT></P>
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style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B>
asterisk-users-admin@lists.digium.com
[mailto:asterisk-users-admin@lists.digium.com] <B>On Behalf Of </B>Markus
Miertschink<BR><B>Sent:</B> Tuesday, April 06, 2004 10:58 AM<BR><B>To:</B>
asterisk-users@lists.digium.com<BR><B>Subject:</B> AW: [Asterisk-Users] SIP
Proxy Problem (NAT Environment)<BR><BR></FONT></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">It is set to
yes…<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Strangely it works –
only if I make the call from one direction one voice channel gets no voice
transmitted…<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
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<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">Von:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">
asterisk-users-admin@lists.digium.com
[mailto:asterisk-users-admin@lists.digium.com] <B><SPAN
style="FONT-WEIGHT: bold">Im Auftrag von </SPAN></B>Michael Shuler<BR><B><SPAN
style="FONT-WEIGHT: bold">Gesendet:</SPAN></B> Dienstag, 6. April 2004
17:30<BR><B><SPAN style="FONT-WEIGHT: bold">An:</SPAN></B>
asterisk-users@lists.digium.com<BR><B><SPAN
style="FONT-WEIGHT: bold">Betreff:</SPAN></B> RE: [Asterisk-Users] SIP Proxy
Problem (NAT Environment)</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<P class=MsoNormal><FONT face=Arial color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Make sure you have
nat=yes for the sip.conf entry for SIPGATE.</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<P><FONT face="Times New Roman" size=2><SPAN style="FONT-SIZE: 10pt"><!-- Converted from text/plain format -->----------------------------------------<BR><BR>Michael
Shuler, C.E.O.<BR>BitWise Systems, Inc.<BR>1301 W. Pioneer Parkway<BR>Peoria,
IL 61615<BR>Office: (217) 585-0357<BR>Cell: (309) 657-6365<BR>Fax: (309)
213-3500<BR>E-Mail: mike@bwsys.net<BR>Customer Service: (877) 976-0711
</SPAN></FONT><o:p></o:p></P>
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<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><FONT face=Tahoma
size=2><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original
Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B>
asterisk-users-admin@lists.digium.com
[mailto:asterisk-users-admin@lists.digium.com] <B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B><st1:PersonName
style="BACKGROUND-POSITION: left bottom; BACKGROUND-IMAGE: url(res://ietag.dll/#34/#1001); BACKGROUND-REPEAT: repeat-x"
w:st="on">Markus Miertschink</st1:PersonName><BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Tuesday, April 06, 2004 10:09
AM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
asterisk-users@lists.digium.com<BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> [Asterisk-Users] SIP Proxy
Problem (NAT Environment)</SPAN></FONT><SPAN
lang=EN-US><o:p></o:p></SPAN></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have the problem calling from
a NAT firewalled SIP Phone to sipgate.de. Somehow it is working. The
connection works. Everything seems to be fine. I could talk to the external
phone. But: the external voice gets not transmitted to my internal (calling)
phone.</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Calling inbound from SipGate to
the same phone works perfectly. Both channels are perfectly
“proxied”.</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">The * is used as a proxy and
registered the sipgate account.</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">This way
works:</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">SIPGATE ---</SPAN></FONT><FONT
face=Wingdings size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">à</SPAN></FONT><FONT
face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">NAT(IP0)----</SPAN></FONT><FONT
face=Wingdings size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">à</SPAN></FONT><FONT
face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Asterisk(IP1)-----</SPAN></FONT><FONT
face=Wingdings size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">à</SPAN></FONT><FONT
face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">IP-Phone(IP2)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">This not
(partially):</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">SIPGATE</SPAN></FONT><FONT
face=Wingdings size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">ß</SPAN></FONT><FONT
face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">--NAT(IP0)</SPAN></FONT><FONT
face=Wingdings size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">ß</SPAN></FONT><FONT
face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">---Asterisk(IP1)</SPAN></FONT><FONT
face=Wingdings size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">ß</SPAN></FONT><FONT
face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">---IP-Phone(IP2)</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">All ports are mapped to the
address of IP1. If I look into the tcpdump log it seems that all ports used
there are matching my NAT settings. Asterisk is happy. No
problems.</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I only run into immediate
abortion of the call if Asterisk is configured using outbound_address with
the ip of IP0.</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have no clue what to do
anymore…</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Regards,</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Markus</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">____________<BR>Virus checked by
G DATA AntiVirusKit<BR>Version: AVK 14.0.635 from 31.03.2004<BR>Virus news:
www.antiviruslab.com</SPAN></FONT><o:p></o:p></P></BLOCKQUOTE></DIV></DIV></BLOCKQUOTE></BODY></HTML>