Sorry for posting again.
I installed asterisk 1.4.25 and asterisk 1.6.1.1 on the same PC.
First I installed asterisk 1.4.25:
When I “core show translation”, I got
g723 gsm ulaw alaw g726aal2 adpcm slin lpc10 g729 speex ilbc g726 g722
g723 - - - - - - - - - - - - -
gsm - - 2 2 2 2 1 4 - - - 3 -
ulaw - 3 - 1 2 2 1 4 - - - 3 -
alaw - 3 1 - 2 2 1 4 - - - 3 -
g726aal2 - 3 2 2 - 2 1 4 - - - 1 -
adpcm - 3 2 2 2 - 1 4 - - - 3 -
slin - 2 1 1 1 1 - 3 - - - 2 -
lpc10 - 3 2 2 2 2 1 - - - - 3 -
g729 - - - - - - - - - - - - -
speex - - - - - - - - - - - - -
ilbc - - - - - - - - - - - - -
g726 - 3 2 2 1 2 1 4 - - - - -
g722 - - - - - - - - - - - - -
It seems OK.
And the I uninstalled 1.4.25 and installed 1.6.11
When I “core show translation”, I got:
Translation times between formats (in microseconds) for one second of data
Source Format (Rows) Destination Format (Columns)
g723 gsm ulaw alaw g726aal2 adpcm slin lpc10 g729 speex ilbc g726 g722 slin16
g723 - - - - - - - - - - - - - -
gsm - - 1001 1001 3000 1001 1000 3000 - - - 2999 1001 3001
ulaw - 3000 - 1 2001 2 1 2001 - - - 2000 2 2002
alaw - 3000 1 - 2001 2 1 2001 - - - 2000 2 2002
g726aal2 - 3999 1001 1001 - 1001 1000 3000 - - - 1 1001 3001
adpcm - 3000 2 2 2001 - 1 2001 - - - 2000 2 2002
slin - 2999 1 1 2000 1 - 2000 - - - 1999 1 2001
lpc10 - 5999 3001 3001 5000 3001 3000 - - - - 4999 3001 5001
g729 - - - - - - - - - - - - - -
speex - - - - - - - - - - - - - -
ilbc - - - - - - - - - - - - - -
g726 - 4000 1002 1002 1 1002 1001 3001 - - - - 1002 3002
Why the results are so different?
Is my config wrong?
For both I only did “make samples”.