> Markdown version of [/jobs/ext/477393-lan-voip-network-specialist-i](https://www.wearedevelopers.com/jobs/ext/477393-lan-voip-network-specialist-i). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # LAN VoIP Network Specialist I - **Company:** SierTeK Ltd. - **Location:** Washington, DC, United States - **Experience:** Expert - **Salary:** $70,000.0 - $80,000.0 - **Contract:** Permanent contract - **Skills:** Accounting Information Systems, VoIP, CompTIA Security+, Information Systems, Integrated Services Digital Networks, Project Management Information Systems, Internet Protocol Telephony, SC Clearance, 3-tier Architectures - **Published:** June 4, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=3aa92ea35cb59313 ## About the Role Do you have experience in Voice over internet protocol (VoIP) configuration?, * Minimum of five (5) years of experience with Nortel MSL 100 (Tier 2 and Tier 3 support for analog and digital single/multi-line phones), ISDN, POTS, and VoIP systems. * Demonstrated experience maintaining and troubleshooting copper-based telephony infrastructure. * Active CompTIA Security+ CE certification required. * Secret Clearance is required * Strong documentation and technical diagramming skills. ## Description The Legacy Telephone Technician provides Tier 2 and Tier 3 maintenance and operational support for legacy telephony systems and copper infrastructure. This position supports Government voice engineering efforts by maintaining, troubleshooting, documenting, and improving ISDN, POTS, and related copper-based telecommunications systems while ensuring compliance with USAF standards and local business practices., * Provide Tier 2 and Tier 3 maintenance and operational support for telephony systems. * Survey, install, maintain, troubleshoot, and audit physical connections utilized for telephony systems; ensure all tickets are completed in accordance with defined customer priority levels and within three (3) business days of assignment. * Install, maintain, and troubleshoot telephony devices. * Maintain or create documentation of existing copper circuits including Integrated Services Digital Network (ISDN), Plain Old Telephone Service (POTS), alarm, fax, elevator, and other systems. * Work in-house with the Government Voice Engineer to maintain the copper infrastructure. * Maintain ISDN/POTS telephony architecture and supporting diagrams. * Perform tasks assigned by the Government engineer. * Trace, label, and maintain existing copper lines; coordinate with commercial service providers as needed. * Terminate cable on the main distribution frame (MDF) as required. * Create and update maintenance cutsheets to include phone numbers, copper cable, copper pair information, and physical location on base. * Report and log deteriorating conditions of copper cabling to the JBAB CFP and/or GSO as discovered. * Inform the Government when infrastructure saturation reaches 70%. * Develop plans to improve base infrastructure and prevent shortfalls. * Perform Security Technical Implementation Guides (STIGs), Maintenance Task Orders (MTOs), and other audits to ensure Squadron compliance with USAF standards and 794th Business Practices. * Perform Preventive Maintenance Inspections (PMIs) on Cable Distribution Networks (CDNs), including reporting observed issues using local work cards in accordance with TO 00-5-1, Air Force Technical Order System; provide results/findings via email no later than the 5th day of each month. * Ensure all telephony interfaces with emergency service location information systems, such as Configuration Accounting Information Retrieval System (CAIRS), are up to date with correct device location details. * Assist in identifying legacy devices and services; provide solutions and migration strategies to transition analog and legacy digital services to IP-based solutions in accordance with (IAW) SAF/CN directives. * Submit a Weekly Activity Report (WAR) and a monthly report of work completed to the Government Support Office (GSO). ## Related Videos - [The Vonage Trivia Voyage: Quiz Your Way to the Top!](https://www.wearedevelopers.com/videos/1077-the-vonage-trivia-voyage-quiz-your-way-to-the-top) - [Getting under the skin: The Social Engineering techniques](https://www.wearedevelopers.com/videos/38-getting-under-the-skin-the-social-engineering-techniques) - [SRE Methods In an Agency Environment](https://www.wearedevelopers.com/videos/348-sre-methods-in-an-agency-environment) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Remote Work: Best Practices for Developers](https://www.wearedevelopers.com/magazine/315-remote-work-best-practices-for-developers) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [How should you format your IT resume?](https://www.wearedevelopers.com/magazine/68-how-should-you-format-your-it-resume) - [IT Salaries in UK](https://www.wearedevelopers.com/magazine/288-it-salaries-in-uk)