Ok Brian, as you can see I'm not a SIP specialized. But I did the same test using att_xfer and the behaviour was exactly the same. But nevermind, I posted this topic to see if someone has passed by this situation. By the replies I think nobody. It should be some stupid thing I'm doing. Let me come back to the logs. Thanks, Alex. ________________________________ De: freeswitch-users-bounces@lists.freeswitch.org <freeswitch-users-bounces@lists.freeswitch.org> em nome de Brian West <brian@freeswitch.org> Enviado: terça-feira, 29 de março de 2016 19:36 Para: FreeSWITCH Users Help Assunto: Re: [Freeswitch-users] Attended Transfer with one-way audio att_xfer in dialplan isn't the same as a sip refer. /b On Tue, Mar 29, 2016 at 1:45 PM, Alex Pierry <alex@teclan.com.br<mailto:alex@teclan.com.br>> wrote: Hi Bote, Extension B sends a REFER event to FS that responds with a 202 Accepted and after a NOTIFY. I guess it is the same as using dialplan with att_xfer. Alex. ________________________________ De: freeswitch-users-bounces@lists.freeswitch.org<mailto:freeswitch-users-bounces@lists.freeswitch.org> <freeswitch-users-bounces@lists.freeswitch.org<mailto:freeswitch-users-bounces@lists.freeswitch.org>> em nome de Bote Man <bote_radio@botecomm.com<mailto:bote_radio@botecomm.com>> Enviado: terça-feira, 29 de março de 2016 15:04 Para: 'FreeSWITCH Users Help' Assunto: Re: [Freeswitch-users] Attended Transfer with one-way audio What does the Flash key do in SIP? Bote From: Alex Pierry Sent: Tuesday, 29 March, 2016 08:25 To: freeswitch-users@lists.freeswitch.org<mailto:freeswitch-users@lists.freeswitch.org> Subject: [Freeswitch-users] Attended Transfer with one-way audio Hi All, I'm facing a strange behaviour in FS after a Attended Transfer. For the A leg listen the C leg, C needs to press some DTMF key. Otherwise only C leg can listen A leg. ... An important point is that all transfers are made pressing "Flash" key in SIP Phone not by att_xfer in Dialplan. So, any clue to start? Thank you, Alex. _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org<mailto: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<mailto: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 -- Brian West brian@freeswitch.org<mailto:brian@freeswitch.org> [http://billing.freeswitch.org/templates/default/img/whmcslogo.png] Twitter: @FreeSWITCH , @briankwest http://www.freeswitchbook.com http://www.freeswitchcookbook.com https://www.gofundme.com/freeswitch_ubuntu Got Bugs? Report them here<https://freeswitch.org/jira>! | Reddit: /r/freeswitch<https://www.reddit.com/r/freeswitch> T:+19184209001 | F:+19184209002 | M:+1918424WEST (9378) iNUM:+883 5100 1420 9001 | ISN:410*543 | Skype:briankwest