Operation and Maintenance of core network (MSC/VLR and MGW) • Knowledge of SS7 • Handling different type of corporate reports,TRAI and TERM reports on daily/weekly/monthly/quarterly basis. • Analyzing KPI & preparing Daily corporate reports. • Resolving customer issues by Analysing different kind of traces as part of TSG team. • Implementation of ILD Least cost routing of International levels in MSC by making Script. • Analyzing KPI & preparing Daily corporate reports. • Customer Complaints Resolution within SLA Limits. • Coordination with other operator, roaming Partners and third party to resolve networking & different KPIs issues.