crm integration , Voice Gateway, Golang, C, PostgreSQL, Rtcp, Lua, Asterisk, Python, Database, Wireshark, Redis, Rabbitmq, MongoDB, Webrtc, freeswitch, IVR management, sngrep, Logger, CUIC Reporting, CVP List Management, VoIP Infrastructure Design, ACD, SIP Call Routing, Kamailio, ICM Router, Dialer PG, QoS metrics, Recording solution NICE, Cisco Contact Center Solutions