_________________________________________________________________________This might be what you're looking for, this is a SIP Profile parameter:<param name="NDLB-sendrecv-in-session" value="true"/>
It may also be possible to re-write the SDP per call:https://freeswitch.org/confluence/display/FREESWITCH/Codec+Negotiation#CodecNegotiation-RewritingSDP
From: FreeSWITCH-users <freeswitch-users-bounces@lists.freeswitch.org> on behalf of Oleg Belousov <obelousov@gmail.com>
Sent: 12 September 2020 22:22
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: [Freeswitch-users] Add a=sendrecv onto sdpHi.Please advise how I can add a=sendrecv parameter onto the SDP part of 183 Session progress. I'm using preAnswer in lua script to respond 183 with SDP to an invite.
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