[Asterisk-Users] sip/rtp performance monitoring

[Forrest Christian]

I'm currently running asterisk to provide VoIP services to clients of 
the ISP I work for.

I would like to be able to tell if I am loosing packets and/or are 
having other issues with any of the voice streams, so I can address them 
proactively.

I'm not particularly interested in spending oodles of money buying one 
of the commercial analysis tools.   Is there some open source tool (or 
something I can monitor in asterisk) which will tell me if I'm missing 
packets or similar?  I realize this will likely be only from the 
customer towards me since I can't really monitor at the customer end.

-forrest