Around 9 year experience on Telecommunication QA (Testing and support) in reputed companies.
briefly summarized my expertise in below:
Domain expertise: IMS (IP Multimedia Subsystem). Open source IMS, VOIP and VIDEO.
IMS: P/I/S-CSCF, HSS (Diameter server), BGCF, MGCF, SIP-AS (MMTEL), MRFP and MRFC.
VOIP: IP-PABX, class-4/5 switch, SBC, PROXY server, SIP endpoints.
VIDEO: Video gateways, Video conferencing server and Video phones.
testing: Performance (endurance, load and soak), regression, manual, feature testing
Performance tool: SIP...