I write the books I wish I'd had when I started troubleshooting VoIP at 2am.
For 30+ years I've designed, deployed, and untangled voice systems in production — hosted UCaaS, SIP trunks, enterprise SBCs, healthcare, financial services, education, government. The VoIP Engineer's Library is the practical, capture-driven reference that didn't exist when I needed it.
A practical guide to capturing, diagnosing, and resolving VoIP problems.
Bridges the gap between protocol theory and real-world production troubleshooting. Five parts, 49 chapters, eleven case files, and a companion library of annotated packet captures. Designed to be read cover-to-cover once, then used as a reference forever after.
A practical guide to hardening, detecting, and responding to voice-system attacks.
SIP authentication hardening. Credential theft and toll-fraud prevention architectures. SRTP enforcement policy. Platform-specific hardening for Kamailio, Asterisk, and NetSapiens. STIR/SHAKEN compliance posture. Regulatory considerations for healthcare and financial-services VoIP. Where Vol I builds the diagnostic skills to find a problem, Vol II builds the defensive architecture to prevent it.
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Network Analysis for VoIP Engineers is the first volume of The VoIP Engineer's Library. Paperback edition available on Amazon, with free companion downloads and ongoing errata hosted here.
Production VoIP problem in front of you? Reading the book and want to ask a question? Have a correction? Get in touch.