Hello,
I can tell you that ALU B10 is working fine 🙂 If you make a call with a MS that supports AMR(AMR narrow band), then depending on your parameters
-either the call is AMR without TFO
-or the call is TFO without AMR
Would you mind sharing here all your parameters settings releated to AMR and TFO ?
(just ctrl+F 🙂 )
cheers
pix