*CSAR package creation for VNF/CNF Nokia SBC nodes.*Deployment, Integration and ATPs of VNF/CNF Nokia Session Border controller (SBC) IMS node.

*CSAR package creation for VNF/CNF Nokia SBC nodes.*Deployment, Integration and ATPs of VNF/CNF Nokia Session Border controller (SBC) IMS node.

*HLD, LLD of virtual and native IMS nodes.*Deployment, Integration, Configuration, Upgrade, Testing of IMS nodes, mostly BGF, SBG, MRF, CSCF, MTAS.*Soutioning for IMS and CS core nodes.*Customer Interactions, understanding business requirements

• Exposure on 2G, 3G, 4G-LTE, VoLTE , SIP, CSFB (Nodes - MME, HSS, PGW, SGW, PCRF), IMS (P-I-S-CSCF, BGCF, MGCF, MGW, Application servers, GCS, NFV, SRVCC, SBC, TAS, Cloud).• O & M of MPBN & IPRAN nodes – Cisco, Ericsson SSR & Juniper routers – Extreme Summit & Blackdiamond switches. Technologies like LAN, WAN, GSM, Wireless, IP and Ethernet.• New Level opening and getting clearance from PAN India operators, maintaining routing matrix, Regular Backups & Health checks. Emergency number, SC, TFN routing, EA/RO based routing.• Hands on experience and O&M of Ericsson MSC, MSS, GMSC, GMSS, Blade cluster, HLR, MGW & Airguard EIR, UDC (PG, HLR-FE, EIR-FE, HSS, CUDB)• Experience on Ericsson APZ 212-40, APZ 212-50, APZ 212-60, APG214-01, APG40C/2, APG40C/4, APG43W, APG43L, GMPV3, GMPV4 versions NEs.• Resolving customer complaints, Perform all upgrades, correction loadings -MSS, MGW, EIRFE, Card replacements/troubleshooting without any outage in network, disaster recoveries.• KPI monitoring through various network reports like MOU, traffic, VLR, Calls, 2G/3G/4G stats, ASR, PSR, EOS, Software route, LU, Dual seizures, Processor load analysis, Congestion and TDM rejections .• Configurations of BSC/RNC in MSC nodes, migrations, LAC definitions, NRRG definitions, creating signalling/Associations on TDM/IP media.• PRI definitions in monolithic and softswitch, Enterprise business.• Transfer queue, TRD, TRAR, STS files definitions, Object type analysis, and CDR analysis.• Announcement loadings in monolithic MSCs and MGWs • Maintaining InterMSC, A- interface, Pvt Operator E1s Utilization.• Lawful Interception, Security, Network internal and DOT Audits, LBS

• Operations & Maintenace of Huawei MSC’s, MGW’s, GMSC’s, HLR, EIR and POI connectivity’s with other operators.• Trouble shooting and solving customer complaints.• Augmenting new connectivity, testing, and executing RA templates for clearance.• Addition of new point code, new route, new sub route, new office and new TG.• Implementing, maintaining, reconciling of all code related issues (NAT/INT/Local/Short codes), single point of contact for code point routing.• Defining Signalling and traffic E1's for new connectivity.• Analysing daily health reports and various system performance based reports like VLR count, SMS, paging, Call attempts, Seizure, Traffic utilization, BH Erlangs and many more so as to know the performance and functioning of all switches.• Allowing national and International calls through less cost affecting routes.• Activities for NE card replacements, up gradation and testing.• Routine maintenance includes backup of systems, routine audit and database dumps.• Maintaining records for LRN base routing in case of Mobile Number Portability (MNP) call process.• Patch loading and s/w up gradation in coordination with vendor.• Defining various call processing tables.• Carrying out various test scenarios (SMS, Calls and Data) after new level launch or after any NE s/w up gradation.• Checking daily POI utilization (< 80%) and allotting new E1’s for expansion to various operators.• CDR analysis.• Creating signalling links, SCCP office, etc with STP for home (e.g. SMS, IN, HLR, etc) as well as for other operators.• Defining LSL and HSL links with STP. Migration from LSL to HSL.• GPRS testing.• LI testing• Analysing ISUP, SIP, BICC, etc traces and troubleshooting the exact problem.• Hands on experience on Huawei switches, HLR and Ericsson HLR• Performing the IREG tests with international and national roaming partners (Short / Full IR24, IR32).