freeswitch/conf/rayo/autoload_configs/ssml.conf.xml

<configuration name="ssml.conf" description="SSML parser config">

	<!-- voices in order of preference -->
	<tts-voices>
		<voice name="slt" language="en-US" gender="female" prefix="tts://flite|slt|"/>
		<voice name="kal" language="en-US" gender="male" prefix="tts://flite|kal|"/>
		<voice name="rms" language="en-US" gender="male" prefix="tts://flite|rms|"/>
		<voice name="awb" language="en-US" gender="male" prefix="tts://flite|awb|"/>
	</tts-voices>

	<!-- maps ISO language to say module -->
	<language-map>
		<language iso="en-US" say-module="en" language="en"/>
	</language-map>

	<!-- say voices in order of preference -->
	<say-voices>
		<voice name="callie" language="en-US" gender="female" prefix="$${sounds_dir}/en/us/callie/"/>
	</say-voices>

	<!-- map interpret-as to say macros -->
	<macros>
		<macro name="cardinal" method="pronounced" type="number"/>
		<macro name="characters" method="pronounced" type="name_spelled"/>
	</macros>

</configuration>