Thanks For Reply. I'm trying the same which is mentioned in provided url but getting some error..
DialPlan :
<extension name="test_1">
<condition field="destination_number" expression="^5300$">
<action application="set" data="enable_file_write_buffering=false"/>
<action application="eval" data="${uuid_record(${uuid} start /tmp/firstTest.fsv)}"/>
<action application="bridge" data="user/1000"/>
</condition>
</extension>
Error:- 2017-10-04 09:33:22.678400 [ERR] mod_fsv.c:969 You are asking to write 2048 bytes of data which is not supported. Please set enable_file_write_buffering=false to use .fsv format
2017-10-04 09:33:22.678400 [ERR] switch_ivr_async.c:1169 Error writing /tmp/firstTest.fsv
2017-10-04 09:33:22.938385 [ERR] mod_fsv.c:969 You are asking to write 2048 bytes of data which is not supported. Please set enable_file_write_buffering=false to use .fsv format
2017-10-04 09:33:22.938385 [ERR] switch_ivr_async.c:1169 Error writing /tmp/firstTest.fsv
2017-10-04 09:33:23.198409 [ERR] mod_fsv.c:969 You are asking to write 2048 bytes of data which is not supported. Please set enable_file_write_buffering=false to use .fsv format