jasbir singh Jasbir

SIP Signaling Validation

Professional Synopsis:-

 Total Experience of around 6.4 Years.
 Good experience in SIP Protocol Testing, IMS Network Performance Testing, System validation of LTE and IMS.
 Working knowledge on end to end call flow including IMS Registration.
 Good experience in IMS architecture with all the nodes (P-CSCF, I-CSCF, S-CSCF, AS, HSS) and also having
Knowledge on VoLTE call flow.
 Good experience at all STLC Stages, Analysis, Design, Documentation, Testing and Review.
 Coordinated different phases & activities in software testing.
 Good Knowledge on SIP Protocol (RFC 3261). Knowledge on end to end call flow from IMS network to PSTN.
 Working knowledge of various supplementary services like Call hold, Call Forward, SIP forking, call conference etc.
 Sound knowledge on Unix Servers, Database Application, Core Network (NSS) & Radio Access Network (BSS), SS7 technology, Networks & Linux.
 Sound knowledge of Networking (Router).
 Good understanding of IT Service Management.

A B2BUA is a device regularly deployed in Voice over Internet Protocol (VoIP) networks to exert control over the signaling and usually also the media streams involved in setting up, conducting, and tearing down telephone calls or other interactive media communications.
Extensive interoperability experience with large number of service providers and enterprise PBXs helps launch services faster.
Solves real world interworking challenges in real time via advanced SIP message manipulation, onboard and distributed transcoding.


Responsibilities
Maintenance and testing the new feature of SIP protocol stack.
RFC (3261) standard compliance testing.
Requirement study and test case preparation for new features/releases.
Exposure to write Test Plan of different features.
Executed scenarios by applying various testing techniques like Regression Testing, Functional Testing.
Finding and Reporting Bugs in Bug Tracking Tool i.e. in JIRA.
Requirement understanding of new features.
Inter team communication to resolve bugs on priority basis.
Organize meetings with client to discuss on new features and Test plan approval.
Timely delivery of releases/patches to customer.

 UNIX and SQL to support the Application on Production servers.
 Post-coding tasks includes deployment in Production servers.
 Maintaining cron, running and deploying scripts, etc.
 Providing inputs for optimizing the existing applications.
 Participate in review meetings of various deliverables for releases/projects.
 Perform problem analysis/resolution of application processing exceptions from the point of initial alert or notification through resolution or escalation. Assesses problem impacts on service and notifies appropriate groups per Guidelines. Coordinates work activities with resolver-groups/fix-it agents in complex recovery situations; tracks exceptions until restorations are complete.
 Interface with clients, Development teams and other interfacing system and work groups to schedule and run on-request jobs.
 Working on LINUX Environment.
 De-bugging problems, implementing patches, providing feedback to R&D / Product management.
 Making UNIX Scripts as per Requirements.
 Configuring Routing Protocols (RIP, EIRGP and OSPF).
 Finding Problems in the Network by watching active connections through “netstat”.
 Checking logs of BSC (In Linux Machine) to diagnose the Fault.

Network Operations




Responsibilities:

•UNIX and SQL to support the Application on Production servers.
•Post-coding tasks includes deployment in Production servers.
•Maintaining cron, running and deploying scripts, etc.
•Providing inputs for optimizing the existing applications.
•Participate in review meetings of various deliverables for releases/projects.
•Perform problem analysis/resolution of application processing exceptions from the point of initial alert or notification through resolution or escalation. Assesses problem impacts on service and notifies appropriate groups per Guidelines. Coordinates work activities with resolver-groups/fix-it agents in complex recovery situations; tracks exceptions until restorations are complete.
•Interface with clients, Development teams and other interfacing system and work groups to schedule and run on-request jobs.
•Working on LINUX Environment.
•De-bugging problems, implementing patches, providing feedback to R&D / Product management.
•Making UNIX Scripts as per Requirements.
•Configuring Routing Protocols (RIP, EIRGP and OSPF).
•Finding Problems in the Network by watching active connections through “netstat”.
•Checking logs of BSC (In Linux Machine) to diagnose the Fault.
•Responsible for providing Reports like Service Outage, FM Dashboard, Health Check Up, Master Database, Daily Alarm Cluster to SLA-OLA Team, PM Team and Aircel Project Team.
•Support Remotely to Project Engineers at the time of any Planned Activity or parameters modification in BTS/BSC.
•Routine Health checkups, backup and redundancy check/diagnosis of BSS and OSS elements.
•Creation and closing of Trouble Tickets (BMC-Remedy—PT4).
•In Switchover or restart of BSC units, Diagnose done for particular units like (BCSU, MCMU, OMU, EMB).
•To troubleshoot faults of different Radio Access Network nodes (RNC, NODEB, BSC, BTS) through Reflection and Netact Server Applications in NSN.