[Asterisk-Users] iLBC/PCM16 Huge Cost

[Kevin Walsh]

Benjamin on Asterisk Mailing Lists [benjk.on.asterisk.ml at gmail.com] wrote:
> On Sat, 23 Oct 2004 02:16:44 -0700, Trevor Peirce <tpeirce at digitalcon.ca> wrote: 
> >         G723   GSM  ULAW  ALAW  G726 ADPCM SLINR LPC10 G729A SPEEX  ILBC
> >   G723     -     -     -     -     -     -     -     -     -     -     -
> >    GSM     -     -     2     2     4     2     1  1238     -     - 529695
> >   ULAW     -     5     -     1     4     2     1  1238     -     - 529695
> >   ALAW     -     5     1     -     4     2     1  1238     -     - 529695
> >   G726     -     7     4     4     -     4     3  1240     -     - 529697
> >  ADPCM     -     5     2     2     4     -     1  1238     -     - 529695
> >  SLINR     -     4     1     1     3     1     -  1237     -     - 529694
> >  LPC10     -   196   193   193   195   193   192     -     -     - 529886
> >  G729A     -     -     -     -     -     -     -     -     -     -     -
> >  SPEEX     -     -     -     -     -     -     -     -     -     -     -
> >   ILBC     -   219   216   216   218   216   215  1452     -     -     -
> > 
> Whoa. There must be something very wrong with your codec translation.
> I am getting the following on a PIII 533MHz IBM with Intel mobo, two
> Zaptel cards, no shared interrupts ...
> 
> [snip: show translation results]
> 
> Can you set up a test call where Asterisk will transcode from ulaw to
> ILBC and see what it does to your CPU load?
> 
Also, try recalculating the translation matrix display values by typing
"show translation recalc 5".

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