Boris Starkov

Claude Code Reverse Engineers Viking VoIP Phone’s Undocumented Configuration Protocol

Boris Starkov of ElevenLabs presents the Viking K-1900D-IP phone as a reverse-engineering case study in which Claude Code turned an unusable, undocumented VoIP handset into a working AI demo. Starkov argues that Claude did the investigative work: discovering a two-letter command protocol, brute-forcing valid registers, intercepting the manufacturer’s Windows XP-era software through a TCP proxy, and deriving the one-byte checksum needed to write persistent configuration. His account is also a claim about agency in hardware work: he says he acted largely as Claude’s hands while Claude orchestrated the protocol break.