Role 5G Core Network Tester

Location Redmond, WA

Permanent

Customer:- ATnT

Skills Required

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, RTT, N11, International Wi Fi and 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 Message, RCS, Presence, Subscription), VoNR, VoLTE / LTE EPC

Expert knowledge of 5G and LTE EPC core protocols such as GTPV2C,GTPV1C, GTPV1U, S1AP

Experience with and understanding of how NATing and Proxy functions work in a packet core and the implications for connectivity (routing and firewalls) to services platforms

Exce...