28th January 2008 at 14:32
#50656
pix
Guest
it can be done, it is defined in the 3GPP standards. However it is not implemented by vendors YET, because it is not really useful.
In the future, you will see the AMR WIDEBAND introduction. With this technology, you can expect to see half rate channels carrying 8PSK voice, with more than 12 kb/s codec.