IMS Core: Nokia
> Rich Experience in VoIP/IMS Core entities (Knowledge of SBC, CFX 5000, HSS, OneNDS, OTAS, NTAS,) and VoLTE. Should know about IpSmGw, EPDG, WebRTC.
> Extensive experience with SIP Call processing and SIP Supplementary Services. And all interfaces on IMS system.
> Should have the NOC experience with knowledge on varies KPI and reports.
> In-depth understanding of Telecom Protocols and technologies like SIP,SDP,H.248,MGCP,DIAMETER, TLS, TCP, IPSEC, IP protocols etc.
> Working experience on IMS interworking entities(BGCF, MGCF, MRFC, MRFP, AGW, IBCF,) and interfaces.
> Knowledge on Session Border Controller, NAT, Firewall, Authentication Encryption, L2 Layer switches(Routers/Switches).
> Media handling, transcoding, call modeling CS, SMS, MMS and need to have knowledge on the MGW's.
> Good Analytical and Log debugging Skills(Scripting knowledge is a value added)