Hi bawajan, I have listened to the files. What I can hear is a constant stationary noise. Usually the origin of such noise is hardware issues (mic/cables/etc.). If you are unable to find & fix the source of the problem, you can use noise cancellation software that will easily remove this noise. One software that you can try is PBXMate. A usage example is available on FreeSWITCH wiki: http://wiki.freeswitch.org/wiki/PBXMate-FreeSWITCH-integration Valer ________________________________ From: bawajan <shaik.bawajan@gmail.com> To: freeswitch-users@lists.freeswitch.org Sent: Thursday, May 10, 2012 5:02 PM Subject: Re: [Freeswitch-users] Choopy one-way noise Hi Moises Silva, am new to freeswitch and am facing same noise issue when making call from ISDN (freetdm) to SIP UA. As per above mail, i have did ftdm trace and listen the clips. I found same noise in generated voice clip of line 2 (sip). am attached both audio files for your reference (ISDN line 1 and SIP line 2). Kindly let me know, what needs to do to rectify it. http://freeswitch-users.2379917.n2.nabble.com/file/n7546814/isdn_line1-in-s2... isdn_line1-in-s2c1.wav http://freeswitch-users.2379917.n2.nabble.com/file/n7546814/sip_line2-out-s2... sip_line2-out-s2c1.wav -- View this message in context: http://freeswitch-users.2379917.n2.nabble.com/Choopy-one-way-noise-tp7332765... Sent from the freeswitch-users mailing list archive at Nabble.com. _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.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