CCTV Technology Services Glossary

This glossary defines the core technical and service-related terminology used across the CCTV industry in the United States, covering surveillance hardware, software platforms, service delivery models, and regulatory concepts. The terms collected here apply directly to the decision-making processes buyers, integrators, and compliance officers face when specifying, procuring, or auditing closed-circuit television systems. Understanding precise terminology reduces specification errors, contract ambiguities, and procurement mismatches across the full range of CCTV technology services.

Definition and scope

A CCTV technology services glossary is a controlled reference vocabulary covering the distinct hardware categories, signal architectures, service delivery models, and regulatory classifications that govern surveillance system design, installation, and operation. The scope of this glossary spans analog and IP-based systems, edge and cloud infrastructure, service contract structures, and industry certification frameworks recognized by bodies such as the Security Industry Association (SIA) and ASIS International.

Terminology in this domain spans three broad layers:

  1. Hardware and signal terminology — camera types, recording devices, transmission media, and sensor technologies
  2. Service delivery terminology — installation, maintenance, monitoring, managed services, and SLA structures
  3. Regulatory and compliance terminology — data retention mandates, privacy statutes, cybersecurity frameworks, and certification standards

The National Institute of Standards and Technology (NIST SP 800-82, Rev 3) provides foundational definitions for operational technology (OT) security that apply directly to networked surveillance systems, including IP camera infrastructure and NVR/DVR platforms.

How it works

Glossary terms in the CCTV services domain are classified by functional layer. Each term maps to a specific system component, service phase, or regulatory construct. The structure below outlines the primary classification hierarchy used throughout this resource.

Signal architecture terms

Recording and storage terms

Service delivery terms

Video analytics terms

Common scenarios

Glossary terms appear in four recurring operational contexts:

  1. Procurement specifications — Buyers reference ONVIF profile compliance, resolution minimums (e.g., 2 MP minimum for facial identification per IPVM benchmark guidelines), and PoE standard requirements in RFPs and vendor scorecards.
  2. Contract negotiation — SLA terms, RMA windows (commonly 24–72 hours for critical infrastructure sites), and uptime percentages (often 99.5% or higher for healthcare and government deployments) are defined using standardized glossary vocabulary.
  3. Compliance audits — Regulators and internal auditors reference retention periods, encryption standards (AES-128 or AES-256 for stored footage), and access-log requirements when assessing surveillance programs against frameworks such as HIPAA (45 CFR §164.310 for physical safeguards) or state-level privacy statutes.
  4. Technician certification exams — Certifications administered by ASIS International (PSP — Physical Security Professional) and the Electronic Security Association (ESA) test knowledge of these exact terms.

Decision boundaries

Selecting the correct term — and the technology or service it describes — depends on distinguishing adjacent concepts that are frequently conflated.

DVR vs. NVR: A DVR accepts only analog camera inputs; an NVR accepts only IP camera streams. A hybrid DVR accepts both. Specifying the wrong recorder type against a camera inventory creates a complete signal incompatibility requiring full hardware replacement.

Managed Services vs. Remote Monitoring: Managed video surveillance encompasses infrastructure ownership, configuration, and reporting. Remote monitoring is a narrower function limited to human or AI review of live or recorded streams for alarm response. The two are often bundled but carry distinct pricing and liability structures.

VMD vs. AI Object Detection: VMD operates on pixel-level changes and carries a high false-positive rate in outdoor environments. AI object detection — trained on labeled datasets to recognize humans, vehicles, or specific objects — operates at the inference layer and reduces nuisance alerts by 60–85% in controlled deployments, according to benchmarks published by the Electronic Frontier Foundation's surveillance technology assessment work and independent integrator white papers from SIA.

ONVIF Profile S vs. Profile T: Profile S covers basic IP camera interoperability (streaming, PTZ control, event handling). Profile T, ratified by ONVIF in 2018, adds H.265 encoding, HTTPS streaming, and motion region metadata — a functionally significant distinction when specifying camera firmware compatibility with a VMS platform.

Wired vs. Wireless systems: Wired systems using Cat6 or coaxial cable maintain deterministic latency and are not subject to RF interference. Wireless systems operating on 2.4 GHz or 5 GHz 802.11 bands introduce variable latency and potential signal contention in dense environments. The full comparison is detailed at CCTV wireless vs. wired system services.

References

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