Free g.729 and g.723.1 codecs

Download the codecs from http://asterisk.hosting.lv. Separate codecs are available for both g.729 and g.723.1.

Because the free ones are pre-compiled, we'll need to download the correct codec for the Asterisk box. Run cat /proc/cpuinfo and note the output. Look specifically at the model name and the flags, such as:

Process: 0
vendor_id: Genuine Intel
cpu family: 6
model: 8
model name: Pentium III (Coppermine)
stepping: 3
cpu MHz: 648.110
cache size: 256 KB
fdiv_bug: no
hlt_bug: no
f00f_bug: no
coma_bug: no
fpu: yes
fpu_exception: yes
cpuid level: 2
wp: yes
flags: fpu vme de pse tsc msr pae mce cx8 mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips: 1297.41

From this information we can see that it is a Pentium III processor and it is using sse. This is the 2 bits of required information that we need. If you don’t see sse in your flag then the file you need must contain the words no-sse.

So from the information above to obtain the G729 codec we need to get the file codec_g729-gcc-pentium3.so and for the G723 codec we need to get the file g723-gcc-pentium3.so.

After downloading the codec, store it in /usr/lib/asterisk/modules.

Note: if Asterisk doesn't start, you may need to download the icc versions instead of the 'gcc' ones.