perl-Net-SIP -- perl module handling SIP [VOIP] under RFC3261<hr>
<a href="http://search.cpan.org/dist/Net-SIP/">http://search.cpan.org/dist/Net-SIP/</a><hr>
With the help of this module you can write SIP endpoints (e.g phones,
answer machines), SIP proxies and registrars. It contains no GUI and
no real code for working with video or audio, but is has some support
for RTP (no RTCP) and working with PCMU/8000 data, enough for sending
PCMU/8000 encoded audio to a SIP peer and for receiving and saving
PCMU/8000 audio data
</listing>