Hy! I have tested several times so far the att_xfer function of the freeswitch, and I've found it unstable. I'm using a similar code to the example at the freeswitch wiki, and sometimes a call isnt transfered. The att_xfer works fine in the cases as I figured out from the log, when the switch_ivr_bridge comes back with a "ending bridge by request from read function" message. When it comes back with a "request from write function", the two channels dont get bridged together: they cant hear each other form the other side, and they dont even realize that the other hangs up. I have pasted some logs about this a week ago into paste bin, but if you wish, I could paste new logs with the newest fs. Could it has something with silence, because I think there are more failures when I dont talk into the phones? Im using latest fs, and sip phones without built in transfer. Cheers, Viktor Hirdetés (x) Váltson most olcsóbb kötelezőre a biztosítás-hu-val. www.biztositas.hu - a kötelező biztosítások kiindulópontja!