I have an Ip Office on 9.1.12 and a session border controller on 7.2. And I have been testing the One-X mobile preferred app from my Android. I will attach the document that Avaya provided me with to program this device. The app connects however it is giving me this error " The application is operational with the exception of the VOIP feature which is experiencing problems registering with the server. (Error 16:0)". I have about 60 hours working with Avaya to try get this working and to no avail. I am wondering if anyone has ever got this working?