IMS Core, Application and Datacenter

Confidential
  • Bangalore, Chennai, Pune
  • Confidential
  • 7-12 years
  • Views
  • 16 Mar 2017

  • Testing - Software

  • IT/ Technology - Quality Assurance/ Testing
Job Description

IMS Core, Application and Datacenter

Job Description for L2 IMS Core Engineer(Network Part) :
1. Rich Experience in VoIP/IMS Core entities(Knowledge of P/I/S-CSCF, HSS, SLF) and VoLTE.
2. Extensive experience with SIP Call processing and SIP Supplementary Services.
3. In-depth understanding of Telecom Protocols and technologies like SIP,SDP,H.248,MGCP,DIAMETER etc.
4. Great Conceptual understanding of IMS evolution and trends - IMS Subsystems, functionalities and IMS SIP Services call flows.
5. Experience in TLS, TCP, IPSEC, IP protocols.
6. Experience in integrating/working with various components of a distributed next generation IP based architecture including softswitches, Gateways, SIP Proxies, Route Engines, IP Media Servers, IP Phones/IADs is a Plus.
7. Working experience on IMS interworking entities(BGCF, MGCF, MRFC, MRFP, AGW, IBCF, TrGW) and interfaces.
8. Knowledge on Session Border Controller, NAT, Firewall, Authentication Encryption, L2 Layer switches(Routers/Switches).
9. Media handling, transcoding, call modeling CS, SMS, MMS and need to have knowledge on the MGWs.
10. Good Analytical and Log debugging Skills(Scripting knowledge is a value added)
11. Need to have knowledge on the Class4/5 Switches and Strong exposure to Unix/Linux OS.

Job Description for L2 IMS Application Engineer(Application Part) :
12. Should have ability and good understanding on IMS Subsystems interfaces and protocols used.
13. In-depth Knowledge on Telecom Protocols and working experience SIP,SDP,H.248, DIAMETER and IP Protocols(TCP/UDP, TLS over TCP, IPSEC ).
14. Experience in integrating/working with various components of a distributed next generation IP based architecture including softswitches, Gateways, SIP Proxies, Route Engines, IP Media Servers, IP Phones/IADs is a Plus.
15. Working Experience on the IMS interworking entities GUI configurations(IMS Core entities P/I/S-CSCF, BGCF, MGCF, MRFC, MRFP, AGW, MGW, IBCF, TrGW) and interfaces.
16. Need to have configuration knowledge on SBCs, NAT, Firewall, Authentication Encryption, L2 Layer Switches(Routers/Switches).
17. Knowledge on WebRTC/WebSockets.
18. Ericsson's MTAS, MIO and WCG.
19. Need to have knowledge on Ericsson IMS Application Servers(CAMEL/IS41), EMS/NMS interfaces.
20. Need to have knowledge on the DHCP and DNS Server Configurations.
21. Exposure to project/product QA life cycles(release/build management, defect management, configuration control)
22. Need to have knowledge on debugging application layer logs(GUI logs JAVA, SNMP, DB logs).


Competencies/Skill sets for this job

Ims Core Ims Call Processing Telecom Encryption