[asterisk-users] Via Epia platforms and asterisk

[Tim Panton]

On 13 Sep 2006, at 22:56, Chris Bagnall wrote:

> Greetings list,
>
> Has anyone done any research into call routing and transcoding  
> performance
> using a Via Epia based platform?

Be a bit careful on the transcoding issue.
We have a
  VIA Nehemiah
  1Ghz acting as our office PBX, it has a single PRI line
and is very happy running Asterisk 1.2.9.1

But if I remember the compilation messages right,
it hasn't got some feature of the FPU that a 686
would normally have, so you have to run the
codecs optimized for a 586.

I doubt you would get 60 g729 channels
transcoding on it.

Here's the
show translation output from that box.
          Translation times between formats (in milliseconds)
           Source Format (Rows) Destination Format(Columns)

          g723   gsm  ulaw  alaw  g726 adpcm  slin lpc10  g729 speex   
ilbc
    g723     -     -     -     -     -     -     -     -     -      
-     -
     gsm     -     -     5     5    12     5     4    21    50      
-    74
    ulaw     -    15     -     1     9     2     1    18    47      
-    71
    alaw     -    15     1     -     9     2     1    18    47      
-    71
    g726     -    21     8     8     -     8     7    24    53      
-    77
   adpcm     -    15     2     2     9     -     1    18    47      
-    71
    slin     -    14     1     1     8     1     -    17    46      
-    70
   lpc10     -    27    14    14    21    14    13     -    59      
-    83
    g729     -    25    12    12    19    12    11    28     -      
-    81
   speex     -     -     -     -     -     -     -     -     -      
-     -
    ilbc     -    27    14    14    21    14    13    30    59      
-     -


729 is a bit expensive.

Tim.


Tim Panton

www.mexuar.com/cards.html