Brian, thanks a lot for your reply. To put it short - I am willing to do some call visualization with simple web application based on some incoming INVITE sip header values.So I've been thinking, that watching for changes to sofia (or core) db is enough to represent my data.The ESL is probably a way to go, right ?Regards,Pavel. From: my.post@hotmail.com To: freeswitch-users@lists.freeswitch.org Subject: SIP headers storage in core or sofia database. Date: Tue, 1 Sep 2015 18:25:04 +0600 Hello ! I've set up an ODBC connection for core and sofia profile like this: <param name="odbc-dsn" value="pgsql://hostaddr=127.0.0.1 dbname=freeswitch user=freeswitch password='' options='-c client_min_messages=NOTICE' application_name='freeswitch'" /><param name="core-db-dsn" value="pgsql://hostaddr=127.0.0.1 dbname=freeswitch user=freeswitch password='' options='-c client_min_messages=NOTICE' application_name='freeswitch'" /> Using PgAdmin I see some tables was created in Postgres DB. I want to retrieve all SIP invite headers from this DB. What table should I look for this information if, of course, it is stored at all ? Thanks. Regards,Pavel.