[Freeswitch-users] record_session recordings out of sync

Hello everyone, Happy new year. I have a new freeswitch production version 1.6 installed on Debian 8, 64bits. I have just two sip phones registered and one gateway (Alcatel oxo). All are on the same switch, in different vlans. I use record_session to record calls automatically. The recordings are fine for calls between the two sip phones, but the ones between sip phone and Alcatel gateway are all out of sync. I is the same regardless of settings (stereo, mono, jitterbuffer activated). Did someone had this issue and found a solution? Thank you. Best regards, Mircea.