Job Description
Role Summary
Plans, designs, develops and tests software systems or applications for software enhancements and new products including cloud-based or internet-related tools.Key Responsibilities
Feature development for IMS based SBC solutions
Managing existing deployments and customer support
Building test framework to help test the new feature/fixes for UT/IT
Job Requirements
Core SIP and IMS Protocol Development
must-have Deep knowledge of SIP (RFC 3261 and extensions: PRACK, UPDATE, REFER, SUBSCRIBE/NOTIFY, PUBLISH) for implementing and debugging call control logic
must-have Hands-on experience implementing IMS call flows (VoLTE, VoWiFi, RCS) at the P-CSCF / SBC layer — registration, session establishment, supplementary services
must-have Strong understanding of SDP offer/answer model, codec negotiation (G.711, G.729, AMR, EVS, Opus), and DTMF relay mec...
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