During January 2026, work focused on developing a SIP Peer State Tracking and Management module for the kamailio/kamailio repository. This feature enabled real-time monitoring of SIP peers across various states such as NOT_INUSE, INUSE, RINGING, and UNAVAILABLE, with automatic state transitions based on registration and call activity. The implementation leveraged C programming, shared memory management, and thread safety to ensure fast, concurrent access to peer state data. An external API and RPC commands were provided for querying and managing peer states, supporting integration with the usrloc module and facilitating improved routing decisions and operational visibility within SIP infrastructures.