Yep. that in it.
freeswitch/vars.xml
<X-PRE-PROCESS cmd="set" data="global_codec_prefs=OPUS,G722,PCMU,PCMA,VP8"/>
<X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=OPUS,G722,PCMU,PCMA,VP8"/>
freeswitch/sip_profiles/external.xml
<param name="inbound-codec-prefs" value="$${global_codec_prefs}"/>
<param name="outbound-codec-prefs" value="$${outbound_codec_prefs}"/>
I making call as
session:execute("bridge","sofia/external/"..session:getVariable("destination_number").."@my.sip.pro.xy")
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