[asterisk-users] Very high translation costs for g729

[Avi Miller]

Hey gang,

I'm hoping someone can help me out here. I've just noticed that on  
two of my five Asterisk boxes (CentOS 4.4, Asterisk 1.2.12.1), I'm  
getting the following translation cost for g729:

asterisk*CLI> show translation

Server 1: g729     -    26    25    25    25    25    24    26      
-    53    36
Server 2: g729     -    66    65    65    65    65    64    69      
-    90    75

On my other three boxes, I get much saner vaules (costs anywhere from  
3 to 6).

Any ideas why two boxes have such high costs? All the servers run the  
same OS, updated to the same versions of everything, including  
kernel. Four of the five boxes run x86_64 kernels, with the two that  
are playing up both running x86_64 kernels.

I've switched the entire network to using Speex instead of g729 until  
I find out why I'm getting such high numbers here. I suspect (but  
can't prove) that this may have been the cause of some audio issues  
between these two servers as the phones on either end use alaw, so  
Asterisk is transcoding to g729 across the IAX2 link.

Thanks,
Avi

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