Thanks for your reply. Its worked partially. When FS get ringback from far end then its working fine. But if a call take more time to get RBT then FS gets crashed. Here is the log: [DEBUG] switch_ivr_originate.c:1305 Play Ringback File [file_string://digits/youhave.wav!digits/9.wav] [DEBUG] switch_rtp.c:1846 rtcp_stats_init: audio ssrc[37546101] base_seq[0] [DEBUG] switch_rtp.c:6707 Correct audio ip/port confirmed. freeswitch: src/switch_core_file.c:378: switch_core_file_read: Assertion `fh->file_interface != ((void *)0)' failed. From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of ??????? ??????? Sent: Wednesday, June 15, 2016 6:51 PM To: FreeSWITCH Users Help Subject: Re: [Freeswitch-users] How to playback background call process Hi Try to use <action application="set" data="ringback=/IVR/FILE" /> 2016-06-14 18:14 GMT+03:00 Tanim <tanim05@gmail.com>: Hi, I want to playback file background call process. So that in playing IVR time, call will process to send to gateways. Currently my dialplan like this: <action application="playback" data="/IVR/FILE" /> <action application="bridge" data="sofia/gateway/gw1/123456" /> In this way before call processing IVR is playing then start to process the call. But I want both in same time. Can you please help me, how can I do it. Thanks in advance. Tanim _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org -- WBR Alex