Service Specialist | Wireless Voice Ops | Operations Voice Data And Enhanced Services Department
Current• Operated and maintained Ericsson Voice Core IMS infrastructure, supporting VoLTE, VoWiFi, and 5G services. Managed VNF nodes like MTAS, CSCF, AAA, and SBG, and subscriber systems like HSS, HLR, and CUDB. Handled Cisco BroadWorks (BTAS) for telephony services, SAPC for policy control, and 5G nodes like CCSM, CCDM, and PCF. Also maintained MSC and MGW from the legacy circuit-switched domain, and AFG for IMS media control for Rogers' network, serving approximately 11.7 million mobile… Show more • Operated and maintained Ericsson Voice Core IMS infrastructure, supporting VoLTE, VoWiFi, and 5G services. Managed VNF nodes like MTAS, CSCF, AAA, and SBG, and subscriber systems like HSS, HLR, and CUDB. Handled Cisco BroadWorks (BTAS) for telephony services, SAPC for policy control, and 5G nodes like CCSM, CCDM, and PCF. Also maintained MSC and MGW from the legacy circuit-switched domain, and AFG for IMS media control for Rogers' network, serving approximately 11.7 million mobile subscribers.• Utilized advanced diagnostic tools, including Iris NetScout, SAP BO, Dynatrace, and Splunk, to monitor and analyze Key Performance Indicators (KPIs) for performance and stability.• Executed server software upgrades and system configurations, ensuring adherence to service level agreements (SLAs). Troubleshot logged faults, identified root causes, and worked to minimize service disruptions.• Collaborated with node vendors for troubleshooting, standby support, and root cause analysis (RCA), and conducted end-to-end node performance and service impact analyses before and after network modifications or changes.• Executed national corrective activities, contributed to the development and optimization of system standards documented in Method of Procedure (MOP) guidelines, and performed lab testing to validate and refine proposed engineering solutions.• Played a key role in migrating IMS components (CSCF, CUDB, HSS, VoWiFi (AAA), Cisco BTAS) to the Dynatrace Monitoring Platform to enhance system monitoring and performance tracking.• Developed specialized monitoring scripts (Python/Shell) for the Wireless Voice Ops team and Rogers Network Operations Center (NOC) to facilitate proactive network monitoring of IMS nodes.• Monitored and resolved alerts and trouble tickets related to the production network, provided technical support, managed tickets, and delivered 24/7 on-demand on-call support. Show less
