VoIP Expert Witness Services

VoIP Expert Witness Services

DVI Communications provides technical expert witness services in litigation involving Voice over IP (VoIP) systems, including signaling protocols, media transport, and call-quality disputes. Our experts bring direct engineering experience with SIP/RTP-based communications systems to patent, trade secret, and product disputes involving VoIP infrastructure and services.

Why VoIP Litigation Requires Protocol-Specific Expertise

VoIP disputes turn on how signaling and media are actually implemented across a call path: how SIP establishes and tears down a session, how RTP/RTCP carry and monitor media, how codecs are negotiated, and how session border controllers and NAT traversal mechanisms affect what a device or platform actually does. General networking familiarity does not answer questions about call-quality degradation, jitter buffer behavior, or whether an accused system implements a claimed signaling feature versus simply routing packets.

Case Types We Support

Patent Infringement & Essentiality

Technical analysis of whether accused VoIP platforms, softswitches, or endpoints implement claimed SIP/RTP signaling or media-handling features, and whether asserted patents are essential to relevant VoIP standards.

Product Malfunction & Call Quality Disputes

Technical analysis distinguishing genuine defects in call setup, audio quality, or dropped-call behavior from network, configuration, or third-party carrier factors.

Trade Secret & Systems Forensics

Forensic and technical analysis of VoIP platform architecture and call-routing logic in trade secret and systems disputes involving telephony infrastructure.

Technical Specialties

Our experts’ backgrounds span SIP signaling, RTP/RTCP media transport, codec negotiation, NAT traversal and session border controllers, and QoS and jitter-buffer management — documented through decades of industry practice and prior expert testimony.

Frequently Asked Questions

How is a VoIP expert witness different from a general telecom expert?

VoIP disputes require specific familiarity with SIP/RTP signaling flows, codec behavior, and call-quality metrics, not just general familiarity with IP networking or traditional telephony.

What case types commonly involve VoIP technical disputes?

Patent infringement and essentiality disputes tied to VoIP signaling or media standards, and product performance or malfunction cases involving call setup, audio quality, or platform reliability.

How Engagement Typically Works

An early step is confirming exactly which signaling and media components are at issue — a claim directed to session establishment behaves differently under analysis than one directed to media transport or call-quality monitoring. From there, the process follows the same structure as other technical patent and product litigation: detailed technical analysis, a written expert report, and testimony prepared to withstand challenges to both the technical conclusions and their application to the standard or product at issue.

What Makes a VoIP Technical Analysis Credible

VoIP systems span multiple layers — signaling, media transport, and network transport — and a credible analysis has to be specific about which layer and which implementation actually governs the dispute, rather than treating “VoIP” as a single undifferentiated technology.

When to Engage

Engaging a technical expert early, before infringement contentions or expert reports are due, allows the analysis to account for the specific signaling flows, codec configuration, and deployment context at issue from the outset.