[Kamailio-Users] Play Early Media

alex pappas rebel.pappas at gmail.com
Tue Nov 17 13:14:07 CET 2009

Dear all,

I'm trying to play Early Media instead of Ringing WHEN an 180 Ringing OR 182
Call Queue message is received from the destination UAC. In the
onreply_route[1] I added the following lines in bold:

I use kamailio 1.5 and I have NAT enabled.

onreply_route[1] {
        xdbg("incoming reply\n");
        if ((isflagset(5) || isbflagset(6)) &&
       * if (status=~"(180)") {

        } else {
        if (isbflagset(6)) {

When I get from a UAC an 180 Ringing does not play the media and also in the
syslog I see the following ERRORs:

Nov 17 14:11:29 YGOR /usr/local/sbin/kamailio[4681]:
ERROR:nathelper:extract_body: message body has length zero
Nov 17 14:11:29 YGOR /usr/local/sbin/kamailio[4681]:
ERROR:nathelper:force_rtp_proxy: can't extract body from the message
Nov 17 14:11:29 YGOR /usr/local/sbin/kamailio[4681]:
ERROR:nathelper:select_rtpp_node: script error -no valid set selected
Nov 17 14:11:29 YGOR /usr/local/sbin/kamailio[4681]:
ERROR:nathelper:rtpproxy_stream: no available proxies

Thanks in advance for any help

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