SIP Softphone Platform
Role:Software Development Consultant & Telephony Specialist
Enterprises faced expensive recurring licensing costs for commercial telephony software that lacked cross-platform parity and couldn't interoperate cleanly with existing Cisco room systems.
Architected a cross-platform client with custom SIP signaling, ZRTP/SRTP encryption, low-latency codec negotiation, and native VoIP push services for reliable call wake-ups.
Saved significant recurring software licensing expenses while delivering a secure, cross-platform telephony application that operates consistently across corporate desktops and mobile devices.
Product Architecture
The SIP Softphone Platform is an enterprise communication client engineered for Android, iOS, Windows, and macOS. It features end-to-end encrypted audio/video calling, Cisco BFCP screen sharing, and seamless FreeSWITCH/FlexiSIP interoperability.
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Discuss Your Project →Key Engineering Deliverables
End-to-End Encrypted Media Streams
Implemented secure voice and video pipelines utilizing ZRTP, SRTP, and DTLS protocols, negotiating multi-codec feeds (Opus, G.711, VP8, H.265) directly with SIP gateways.
Cisco BFCP Screen Sharing Interoperability
Engineered a custom Binary Floor Control Protocol (BFCP) module to negotiate presentation floors and stream screen video directly to enterprise Cisco collaboration endpoints.
Native VoIP Background Push Wake-Up
Integrated APNS VoIP push on iOS and high-priority FCM on Android, enabling devices to receive incoming enterprise calls instantly even when apps are terminated.