Job - L3 IMS Support Engineer

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L3 IMS Support Engineer

The vacancy has expired

Job Description

Key Skill Ask

L2 support services team is the second in line to address IMS incidents and service requests.
They provide in-depth technical support and solve issues which cannot be solved by L1
Supporting projects of IMS Core entities (Knowledge of P/I/S-CSCF, HSS, SLF, TAS (ATS) BGCF, MGCF, MRFC, MRFP, AGW, IBCF) and VoLTE.
Responsible for technical communication & clarify with the operator, provide relevant solution with support team towards customer requirement.

Extensive experience with SIP Call processing and SIP Supplementary Services
In-depth understanding of Telecom Protocols and technologies like SIP, SDP, H.248, MGCP, DIAMETER etc.
Great Conceptual understanding of IMS evolution and trends - IMS Subsystems, functionalities and IMS SIP Services call flows.
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).
Experience in Fixed voice solutions including PE IMS, Comsys Voicemail and Community WiFi

Experience in Huawei IMS Core Elements like ATS, I/S-CSCF, SBC, BGCF & MRFP along with diameter routing agent (DRA) - SPSV3, subscriber provisioning gateway (SPG) - SPG2800, converged charging function (CCF)- iCG9815; and equipment management system (EMS) - U2000.
O&M and Configuration Management of IMS Core network including SBC, TAS, CFX etc.
End-to-end knowledge and co-ordination of IMS Network, SBC such as handling of call related issue of IMS at SBC level and co-ordination with Hub location for analysis at TAS/CFX.
Experience with Interfaces and Protocols such as SIP, DIAMETER, DNS, ISUP, MAP, INAP, CAMEL, etc.
Experience in Fixed voice solutions including PE IMS, Comsys Voicemail and Community WiFi

Experience in Huawei IMS Core Elements like ATS, I/S-CSCF, SBC, BGCF & MRFP along with diameter routing agent (DRA) - SPSV3, subscriber provisioning gateway (SPG) - SPG2800, converged charging function (CCF)- iCG9815; and equipment management system (EMS) - U2000.
O&M and Configuration Management of IMS Core network including SBC, TAS, CFX etc.
End-to-end knowledge and co-ordination of IMS Network, SBC such as handling of call related issue of IMS at SBC level and co-ordination with Hub location for analysis at TAS/CFX.
Experience with Interfaces and Protocols such as SIP, DIAMETER, DNS, ISUP, MAP, INAP, CAMEL, etc.