[Freeswitch-users] Ringback on PRI line

Hi, We are running freeswitch with Sangoma PRI and Analog cards. There is no ring back for calls coming in on PRI line. Calls coming in on FXO lines are fine. Calling party gets ring back. I have added following to file conf/dialplan/public/00_inbound_did.xml <action application="set" data="instant_ringback=true"/> <action application="set" data="ringback=%(2000,4000,440.0,480.0)"/> Any suggestions to resolve this problem? Thanks, Venkatesh K