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Navy NEC · Communications

V74B Integrated Voice Communication Network (IVCN) Maintenance Technician

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

A Navy Enlisted Classification: a skill designation sailors hold in addition to their rating.

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Overview

An Integrated Voice Communication Network Maintenance Technician operates and administers computerized interior voice communication systems and performs organizational level maintenance on multi-node Definity G3 series or MultiVantage-based systems. The technician configures and maintains media servers, interfaces, voice mail, call accounting, terminals, power components, switchboards, and PBX switches, then uses tests, equipment, and user complaints to identify and correct faults.

Core Skills

  • Multi-node PBX administration and interface integration
  • S8700 media server setup and maintenance
  • Voice mail and call accounting configuration
  • Voice system fault isolation using diagnostic tests

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Telecommunications Equipment Installers and Repairers, Except Line Installers

Maintaining multi-node PBX systems, associated power equipment, and telephone interfaces directly transfers to telecommunications equipment troubleshooting and repair.

How to prepare: Prepare a sample troubleshooting record showing how you isolated a PBX or interface fault, selected a repair, and verified restored service.

What the civilian work involves
  • Test circuits and components of malfunctioning telecommunications equipment to isolate sources of malfunctions, using test meters, circuit diagrams, polarity probes, and other hand tools.
  • Test repaired, newly installed, or updated equipment to ensure that it functions properly and conforms to specifications, using test equipment and observation.
  • Assemble and install communication equipment such as data and telephone communication lines, wiring, switching equipment, wiring frames, power apparatus, computer systems, and networks.
Civilian tools and software (examples)
  • Cisco IOS

Computer Network Support Specialists

Setting up S8700 media servers, maintaining distributed network interfaces, and isolating connectivity faults provide a foundation for computer network support.

How to prepare: Build a small Linux or Windows Server network lab and document diagnostic tests used to isolate and resolve a connectivity fault.

What the civilian work involves
  • Identify the causes of networking problems, using diagnostic testing software and equipment.
  • Document network support activities.
Civilian tools and software (examples)
  • Linux
  • Microsoft Windows Server

Notes & Sources

Evidence for this guidance (3 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC V74B

    [1] NEC entry "V74B - Integrated Voice Communication Network (IVCN) Maintenance Technician"; cached text line 15167; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Multi-node PBX administration and interface integration, S8700 media server setup and maintenance, Voice mail and call accounting configuration, Voice system fault isolation using diagnostic tests, Telecommunications Equipment Installers and Repairers, Except Line Installers (O*NET 49-2022.00), Computer Network Support Specialists (O*NET 15-1231.00)

  2. O*NET: Telecommunications Equipment Installers and Repairers, Except Line Installers

    [2] O*NET 30.3 occupational data

    Supports: Telecommunications Equipment Installers and Repairers, Except Line Installers (O*NET 49-2022.00)

  3. O*NET: Computer Network Support Specialists

    [3] O*NET 30.3 occupational data

    Supports: Computer Network Support Specialists (O*NET 15-1231.00)

Defense contractor jobs for V74B

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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