IVR, APIs, ACD, WFM/WFO, Omnichannel communications…) Advanced knowledge of voip protocols (e.g., SIP/SDP, RTP/SRTP, WebRTC, MGCP…) Intermediate knowledge of network communication as defined by TCP/IP and OSI models Intermediate knowledge of POTS, DS1/T1, E1, DS3, OC3, FE, GigE and 10GigE. Advanced knowledge of UC/CC applications with 4+ years of experience with applications such as: Genesys, Cisco Unified Contact Center Enterprise, Avaya, Five9, 8x8… Advanced knowledge of IP telephony architecture with 3+ years of practical experience with SIP trunks, SBCs, Media Gateways, FXS/FXO, Codecs… Advanced knowledge of UC/CC technologies (e.g.