I've been fighting with this problem for over a week. I'm losing audio when calling devices on the AT&T wireless network via an Adtran Total Access 908e 2nd Gen. I have proof that audio is being sent to the FreeSWITCH, but FreeSWITCH's recordings of the calls drop audio whenever I stop hearing it on the phone. I need to hire an expert who can look at what my system is doing, find a configuration or help develop a patch ( maybe identify a new NDLB flag that's needed ) to get my setup working. Please contact me at the email address below, thanks. -- Royce Mitchell IT Consultant ITAS Solutions royce3@itas-solutions.com