[Asterisk-Users] Bandwidth requirement with G729A

[Chris A. Icide]

On 08:56 AM 7/14/2004, Kevin Walsh wrote:
 >>
 >The 8k is each way, so that makes 16k for voice.
 >

Huh?  I'm not sure the relevance of this as it applies to the original 
question.  If the person asking the original question had said that they 
were looking at adding both inbound and outbound traffic for a total, then 
yes.  However, I think they were only looking at one way traffic since when 
most people talk about traffic they speak of one direction (and in many 
cases in the network world, since your bandwidth is generally identical in 
capacity for both directions, the largest usage is generally the discussed 
value).  In other words, I don't say my T1 is 3.088 Mbps because it's 1.544 
in and 1.544 out.  However in the case of ADSL I most often refer to it in 
a manner denoting both the inbound and outbound (256/2048 for example).

And in the case of measurement, most measurement tools display bandwidth 
usage for each direction separately, otherwise troubleshooting would be 
severely crippled.

So the issue the original poser is having is that they are unable to 
account for measured traffic as opposed to signal traffic.

signal is 8kbps

but then you have the overhead associated with the UDP and IP wrappers as 
well as the overhead associated with the ethernet wrapper. There was a post 
a while back where someone had gone through and listed the overhead 
specifically per 'wrapper' at least down to the ethernet frame level.  You 
should be able to google it up for specifics.

-Chris