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Visual ProtoStack



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Visual ProtoStack is a distributed protocol emulator, tester and Quality Assurance (QA) tool that supports several state-of-the-art technologies including: (1) Protocol Emulation: L2, L3, L4 and Application layer protocols, (2) RTC and VoIP signaling via SIP and SIPs, (3) RTC and VoIP media via RTP and SRTP, (4) Emulation and support of media players, media recorders, camera, microphone, text-to-speech (TTS) and automatic speech recognition (ASR), (5) Speech codecs: G.711 MuLaw, G.711 ALaw, G.726, G.723.1, G.729A, GSM6.10, AMR, G.728, G.722, iLBC, Speex, EVRC, GSM-EFR, G.729E, G.729D, LPC, G.722.1/RFC3047, AMR-WB/G.722.2, RTAudio, AAC-LC, SILK, G.718, Opus, iSAC, EVS, (6) Video codecs: H261, H.263 (RFC2190,RFC2429), H.264, H.265, Theora, MPEG-1/2, MPEG-4, Opus, VP8, (7) Tone generation and detection, (8) IoT sensor and actuator emulation, (9) IoT CoAP and HTTP support, (10) Impairment insertion at all layers; loss and latency for different distributions including Markov two-state wireless loss model, (11) Software defined protocol emulation (SDPE) with controllers and agents distributed throughout a network, (12) Dynamic, passive and active network quality estimation at all layers including standard VoIP MOS scores, (13) LUA based scripting for customized behavior, (14) Routing, NAT and STUN capabilities, (15) IPv4 and IPv6, (16) Transport Protocols including UDP, TCP, DTLS, TLS and (17) ICMP, DHCP and DNS support."