<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">I am using about 50 PAP2 behind a NAT to connect to an Asterisk server behind a different NAT with no problems and no NAT helpers.<DIV><BR class="khtml-block-placeholder"></DIV><DIV>I have in sip.conf</DIV><DIV>canreinvite=yes</DIV><DIV>nat=route</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Then follow the NAT configuration settings in the PAP2's web configuration. If I recall correctly, this is what you need to do:</DIV><DIV>1) Make sure to login with Admin rights (click Admin Login on upper right)</DIV><DIV>2) Click on Line 1</DIV><DIV>3) Click on Advanced View</DIV><DIV>4) Click on SIP</DIV><DIV>5) Under the "NAT Support Parameters" section, make sure to have the following values:</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Handle VIA received: Yes</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Handle VIA rport: Yes</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Insert VIA received: Yes</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Insert VIA rport: Yes</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Substitute VIA Addr: No</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Send Resp To Src Port: No</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">STUN Enable: No</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">STUN Test Enable: No</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">STUN Server:</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">EXT IP:</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">EXT RTP Port Min:</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">NAT Keep Alive Intvl: 15</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>6) Click on Save Settings and wait for router to reboot</DIV><DIV>7) Click on Line 1</DIV><DIV>8) Under the "NAT Settings" section, make sure to have the following values:</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">NAT Mapping Enable: Yes</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">NAT Keep Alive Enable: Yes</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">NAT Keep Alive Msg: $NOTIFY</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">NAT Keep Alive Dest: $PROXY</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>9) Click on Save Settings and wait for router to reboot</DIV><DIV>10) Repeat steps 7-9 for Line 2, if applicable</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Note, these settings work for me. Also, note that this information only refers to the NAT configuration and not the SIP settings.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Hope this helps.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Waldo</DIV><DIV><BR><DIV><DIV>On Sep 6, 2005, at 5:35 PM, Andy Kuo wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><DIV>Can you recommend some good sources of info for STUN server?</DIV> <DIV> </DIV> <DIV>Thanks.<BR><BR> </DIV> <DIV><SPAN class="gmail_quote">On 9/6/05, <B class="gmail_sendername">Billy Huddleston</B> <<A href="mailto:billy@nxs.net">billy@nxs.net</A>> wrote:</SPAN> <BLOCKQUOTE class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">You need to use a STUN server..<BR><BR>----- Original Message -----<BR>From: "Andy Kuo" <<A href="mailto:akuoca@gmail.com"> akuoca@gmail.com</A>><BR>To: <<A href="mailto:asterisk-biz@lists.digium.com">asterisk-biz@lists.digium.com</A>><BR>Sent: Tuesday, September 06, 2005 5:13 PM<BR>Subject: [Asterisk-biz] Linksys PAP2 behind NAT<BR><BR> <BR>Hi,<BR>Does anyone know how to make PAP2 work behind NAT routers?<BR>I can get my PAP2 (192.168.1.x) to register to my Asterisk (on public IP),<BR>and that's about it. Everything else beyond registration is not working. <BR>I am sure it can be done somehow. Can anyone please help?<BR>Thanks.<BR>Andy<BR><BR><BR><BR>--------------------------------------------------------------------------------<BR><BR><BR>> _______________________________________________ <BR>> Asterisk-Biz mailing list<BR>> <A href="mailto:Asterisk-Biz@lists.digium.com">Asterisk-Biz@lists.digium.com</A><BR>> <A href="http://lists.digium.com/mailman/listinfo/asterisk-biz">http://lists.digium.com/mailman/listinfo/asterisk-biz </A><BR>><BR><BR></BLOCKQUOTE></DIV><BR><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Asterisk-Biz mailing list</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="mailto:Asterisk-Biz@lists.digium.com">Asterisk-Biz@lists.digium.com</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="http://lists.digium.com/mailman/listinfo/asterisk-biz">http://lists.digium.com/mailman/listinfo/asterisk-biz</A></DIV> <BR class="Apple-interchange-newline"></BLOCKQUOTE></DIV><BR></DIV></BODY></HTML>