Thanks Chris. So something like. s = session:getVariable("switch_r_sdp") if string.find(s, "telephone-event/8000") == nil then session.execute("start_dtfm") end Is telephone-event/8000 the correct thing to look for? I guess it is from the dial plan example. On Tue, Mar 17, 2015 at 3:10 PM, Christopher Rienzo <cmrienzo@gmail.com> wrote:
You could set the "execute_on_answer" variable on the b-leg dialstring to execute the lua script. In the lua script, you'd use session:getVariable("switch_r_sdp") and then some pattern matching to figure out if "telephone-event" is in the SDP. If not, then do session:execute("start_dtmf", "")
Chris
On Tue, Mar 17, 2015 at 3:05 PM, Phillip Jones <pjintheusa@gmail.com> wrote:
Hi All,
The following dial plan detects RFC 2833 and if it is not present, runs the "start_dtmf" application.
<condition field="${switch_r_sdp}" expression="a=rtpmap:(\d+)\stelephone-event/8000" break="never"> <action application="set" data="rtp_payload_number=$1"/> <anti-action application="start_dtmf"/> </condition>
I need to do this on the outbound leg - using Lua. Can anyone point me to some code example that would achieve this or get me started?
Any help appreciated.
Thanks
Phil
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