JD For IMS

 

·       Rich experience in IMS core entities, with extensive experience in SIP call processing and SIP supplementary services

·       Experience in managing Nokia Virtualised IMS core ( CFX 5000, NTA,SBCs)

·       In-depth understanding of Telecom Protocols and technologies (i.e., SIP, H.248, SS7, ISUP, BICC, SIGTRAN, INAP, CAP, TCAP, MAP, SCCP, Diameter).

·       Good understanding of Call flows in CS Core, VoLTE/ IMS.

·       Strong understanding of IMS Architecture, internal and external interfaces (ISC, Sh, Dx, Mw, Gq, Gm, Cx, Rf, Ro, Mr, Mg)

·       Understanding of Mobility IMS components P-I/S-CSCF, SBC, HSS/HLR and UDR/UDM concepts.

·       Great Conceptual understanding of IMS evolution and trends - IMS Subsystems, functionalities, and IMS SIP Services call flows.

·       Experience in Nokia IMS Core Elements like ATS, I/S-CSCF, SBC, NTAS, ENUM, CFX, MRF, BGCF along with Policy and Charging Rules Function (PCRF)

·       O&M and Configuration Management of Nokia IMS Core network including SBC, TAS, CFX etc

·       Working experience on IMS interworking entities (P/I/S-CSCF, HSS, SLF, TAS(ATS) BGCF, MGCF, MRFC, MRFP, AGW, IBCF) and interfaces.

·       Knowledge on Session Border Controller, NAT, Firewall, Authentication Encryption, L2 Layer switches (Routers/Switches).

·       Extensive experience in managing Trouble ticket, Change and service request.

·       Trouble shooting of voice core relates issues

·       Root cause Analysis for repeated faults

·       Patch loading, upgrading NEs.

·       Knowledge of wireless technology landscape, including Experience in LTE /4G & 5G.

·       Excellent debugging skills in identifying and resolving the issues of IMS, VoLTE & Messaging solutions.

·       Good understanding of IP addressing and routing protocols.

·       Good analytic and trouble shooting skills.

·       10+Years of experience in IMS domain