VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Browse on Tor / i2p - Anon p2p Chat / FileTx, Conf / Video VoIP
open5g is an open source implementation of the 3GPP 5G specifications.
Enterprise telephony recording and retrieval system
H.323 Gatekeeper for VoIP and videconferencing
Implement Screen Pop for Avaya PBX
ss7mon an SS7/SIGTRAN signalling monitor
TAPI Phone Monitor for Windows
GSM L1-L3 stack with SIP network interfaces