Hi All

I have several problem after upgrading legacy system based on FreeSWITCH 1.2x to latest HEAD

With no configuration changes and on the same hardware fax transmission success rate fall from 86% to 3%

Most calls end up with SpanDSP status/error code 41

Dialplan part I'm using is:

<extension name="infax_t38">

    <condition field="destination_number" expression="^fax_(.*)$"/>

        <condition field="${acl(${network_addr} inbound_acl)}" expression="true">

        <action application="export" data="nolocal:absolute_codec_string=PCMA,PCMU"/>

        <action application="set" data="api_hangup_hook=lua /usr/local/FreeswitchFax/rxfax_db.lua ${destination_number} ${uuid}"/>

        <action application="set" data="fax_ident=${destination_number:4:20}"/>

        <action application="set" data="fax_header=VirtualFAX"/>

        <action application="answer"/>

        <action application="playback" data="silence_stream://2000"/>

        <action application="set" data="fax_enable_t38=true"/>

        <action application="set" data="fax_use_ecm=true"/>

        <action application="set" data="fax_enable_t38_request=true"/>

        <action application="rxfax" data="/usr/local/freeswitch/var/rxfax/rxfax.${destination_number:4:20}.${uuid}.tiff"/>

        <action application="hangup"/>

    </condition>

</extension>

Any hints on what could cause such dramatic success rate?

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