I have experienced this same issue using a Grandstream GXP2200 on the local FS voicemail. Seems there should be a dtmf guard time or something to set to filter this. The problem has happened a couple of times while in voicemail I delete the current message and FS deletes the current and the next as well. I may have bounced the button but if I did it was too short of a silence in between for me to hear. Jerry Allen -----Original Message----- From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Jason Holden Sent: Friday, October 31, 2014 8:25 AM To: 'FreeSWITCH Users Help' Subject: [Freeswitch-users] Duplicate DTMF using certain ip phones on fs 1.2 during outbound calls to IVRS Any recommendations to resolves this?