HI ALL, i have a problem that sent fax from my elastix to another elastix through AS5300. it error with below message all the time: No response to PPS repeated 3 times. or: no answer (T30.T1 timeout) i saw that someone said set as5300 to: voice service voip fax protocol none modem passthrough nse codec g711ulaw sometimes it received and mail to me like attached. i have add t38pt_udptl=yes on sip_general_custom.conf and udptl.conf so is there anything that i need to set to make it work ? Thank you.