Description
Senior Core IMS Engineer - USA Timezone
We are looking for a IMS Core/CVOIP Engineer working remotely on USA timezone, to Build IMS call flow and test automation scripts using a Simulator QA tool for various VoLTE, CVoIP, FirstNet, PSTN and RCS based call flow simulation in the lab environment.
Technology Core: IMS Core, CVOIP, BVoIP, PSTN, GSMA RCS
- UE Endpoint Simulation
- IPSec, TLS and Authentication sequences
- SIP Registration, Call control, Transcoding
- SBC testing (Oracle 6350 I-SBC and IWF)
- ISC/S-CSCF, BGCF, MGCF simulation
- CVOIP, VoLTE, FirstNet, PSTN, eSRVCC call Flow simulation
- STIR/SHAKEN based call flow simulation
- RCS based 1-To-1 chat, group chat and HTTP File transfer call Flow simulation
- Test Automation using EXFO Simulator QA Test automation scripts
Deep Knowledge of IMS core Network elements and Interworking between them:
- SBC, I-CSCF, S-CSCF, AS, HSS, DNS and DRA
- MGCF and BGCF
- General understanding of end to end VoLTE calls (broad understanding of Mobility/EPC Core and how it related to IMS core)
- Protocols: SIP, Diameter, MEGACO, LDAP
- Protocol Analysis/Network Analysis
- Netscout IRIS View, RADCOM Session and Packet Analyzer
- Troubleshooting: Network element correlation, Root cause, Error codes and relationship to network elements, Wireshark, Filters, End to end call tracing and debugging
- Deep Packet Inspection: SIP, RTP and related protocols
- OS: Linux Redhat Enterprise
If this role could interest you please apply now for further details and we will call you today.