just found the Sippy Cup which looks promising:
https://github.com/mojolingo/sippy_cup

On Thu, Mar 19, 2015 at 4:43 PM, Stanislav Sinyagin <ssinyagin@gmail.com> wrote:
> I need to build a test suite for a service provider's SIP service
> infrastructure. The box will initiate and accept calls and verify that
> SIP messages are valid, audio media is two-way, and call control
> features are also working.
>
> My plan for the moment is to use FreeSWITCH and to trigger the
> outbound calls via ESL, and then use packet capture and Perl modules
> for parsing and verifying the SIP messages.
>
> What are other options? I see that SIPp doesn't look too bad, but I
> never worked with it.
>
> This page lists mostly outdated and closed-source packages, so not very helpful:
> http://www.voip-info.org/wiki/view/Protocol+Verification+and+Testing
>
> I'm planning to publish as much of my work as possible as open source.
>
> Any input will be appreciated.
>
> thanks,
> stan

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