Re: [Xen-users] AsteriskNOW on Xen Choppiness

[Ben Holt <ben@xxxxxxxxxxxxxxxx>]

Ian Tobin said the following:
> Hi,
>
> Just curious, are you using this for IP related calls only, no analogue etc?
>
>   
If you are using Zaptel hardware for an analogue line (ie a TDM400 or 
similar card) you will not get the interrupt performance required for 
reasonable call quality.  I fought this long and hard a couple years 
ago.  There is a utility, I forget its name off-hand, that will test the 
interrupt performance for the Zaptel hardware.  voip-info.org should 
have information on it.
If you are in a pure voip situation, where all call traffic is handled 
over the network and not with hardware interfaces, you should be able to 
use a DomU without much difficulty.  The one gotcha is that you will 
need to use the dummy Zaptel timing device for conference calling and 
music on hold to work properly.
- Ben

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