Well, a call trace would help... You use no rtp proxy, so a symmetric NAT will not work for incoming calls. (if you have a GW with active media support, your outgoing calls will be ok) g-) ----- Original Message ----- From: Rick Thompson To: serusers@lists.iptel.org Sent: Thursday, September 01, 2005 10:56 PM Subject: [Serusers] NAT Router problem
Has anyone come across this problem before??
I have the same configuration for each of the following except the first session is going thru a Linksys router and the second one goes thru a Dlink router.
The first session works fine, the second session has one way audio. The only difference in the traces is in the following lines.
Session one
Via: SIP/2.0/UDP 192.168.1.108:5060;rport=5060;received=199.227.155.139;branch=z9hG4bK-389cba09
Session two
Via: SIP/2.0/UDP 192.168.1.40:5060;rport=61034;received=199.227.155.135;branch=z9hG4bK-349cafaf
I have the following in ser.cfg to correct for a NATed UAC
if(nat_uac_test("3")) {
xlog("L_ALERT", "%Tf %mf ****** NATed UAC detected.\n");
fix_nated_contact();
force_rport();
if(method == "INVITE") {
fix_nated_sdp("3");
};
};
And
onreply_route[1] {
xlog("L_ALERT", "%Tf %mf ****** On Reply From: <%si> <%tu> <%fu> <%rm> <%rs> <%rr>\n");
if(status=~"(183)|(2[0-9][0-9])" && nat_uac_test("3")) {
xlog("L_ALERT", "%Tf %mf ****** Fixing contact on reply\n");
fix_nated_contact();
force_rport();
fix_nated_sdp("3");
};
Can anyone help
Thanks for your reply
Rick Thompson, CCNA
VP of Technology
Virtual Communications, LLC
O 954-334-4000 ext 420
M 954-217-7322
F 954-252-4580
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