Asterisk 1.4 : gsm poor quality

I just installed asterisk 1.4 on ubuntu from sources and had bad sound quality on gsm file when I try to play them back.

How to fix it ?

Disable asterisk optiomization parameter when compiling.

How to do it ?

Run ‘make menuselect’ from your asterisk source directory.

Go into ‘Compiler Flags’ and check ‘DONT_OPTIMIZE’

Make sure that you have ncurses packages to display the menu.

Here are the instructions.

make clean
./configure
make menuselect
make
make install

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