Job Description :
Job Title: LTE /Volte testers Location: Redmond WA Duration : Contract Experience with Wireless Data Core networks, Architecture, Protocols and Interfaces Mobile Core Network which includes MME, SAEGW and PCRF in a hybrid environment (native with virtual) Experience in Mobile Network core preferably with Cisco, Ericsson and Nokia nodes Good understanding of Wireless Operator end to end Network Experience with LTE core system interfaces and protocols such as S1-MME, S1-U, S6a, S11, S5/S8, Rx, NAS, S1-AP, RRC, GTPv2c, GTP-U, SGs-AP is desired Excellent Understanding of 3GPP standards and protocols like GTPV2, Sip and Diameter. Experience in IMS Core entities (Knowledge of P/I/S-CSCF, HSS, SLF) and VoLTE. IMS call flows (expertise in SIP based call flows) - Voice and Supplementary services. Hands on experience with Device testing. Expertise in creating test plans for system level, subsystem level and feature level testing. Understanding of Software Testing Life cycle Good Knowledge in TCP/UDP/SCTP, IP protocols.