Job Description
Expert knowledge of 5G SA, NSA and LTE call flows from a E2E perspective (Device RAN Core Network).
Expert knowledge of the call flows of services and features such as Voice, Messaging, UCE, UT, USSI, HTTP, VOLTE, VoWiFi, IR92, IR94, AS262 HO, WPS, R S8HR.
Expert knowledge of VOIP protocols such as SIP, Megaco /H.248, MGCP, DNS, LNP, TCAP, SDP, RTP, DIAMETER), IMS (Audio/Video call signaling, Instant Subscription), VONR, VoLTE/ LTE EPC
Expert knowledge of 5G and LTE EPC core protocols such as GTPV2C, GTPV1C, GTPV1U, SAP
Experience with and understanding of how NAting and Proxy functions work in a packet core and the implications for connectivity (routing and firewalls)
Excellent Troubleshooting skills.
Strong communication skills (written and oral) and intercultural communication abilities.