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Network Specialist – Telephony Systems Support
Network Specialist – Telephony Systems SupportNetwork Designs Inc. • Washington, DC, USA
Network Specialist – Telephony Systems Support

Network Specialist – Telephony Systems Support

Network Designs Inc. • Washington, DC, USA
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About NDi :

Network Designs, Inc. (NDi) is a leading Federal contractor that specializes in designing, developing, and delivering information technology and network solutions for government customers. Founded in 1985, NDi's firmly defined core values have driven all aspects of the business, which have been paramount to our company's success and the establishment of an enjoyable workplace atmosphere. At NDi, we believe that our people are the cornerstone of our success, and we value collaboration, career growth, and winning ideas. Military Veterans Encouraged to Apply.

Job Description :

We are seeking a technically skilled and hands-on Network Specialist to support the backend configuration, deployment, and troubleshooting of enterprise telephony systems, including Avaya and Microsoft Teams Voice environments. This role focuses on network-layer support of VoIP systems in a Cisco infrastructure and involves configuration of access layer switches, gateways, SBCs, and physical telecom cabling. The ideal candidate has strong networking knowledge, voice infrastructure experience, and is comfortable working in a secure government setting.

Requirements :

  • U.S. Citizenship is required
  • Must possess an active TS clearance at the time of application, be willing and able to obtain SCI access, and pass a CI polygraph.
  • This position is onsite 5 / days a week in Washington D.C.
  • May be required to support occasional after-hours maintenance or troubleshooting.

Qualifications and Experience :

  • Bachelor's Degree in Network Engineering, Information Systems, Telecommunications, or a related field.
  • Minimum 5 years of experience in network engineering or infrastructure support, with hands-on experience in voice networking.
  • Proficiency in Cisco switch configuration, including VLANs, PoE, and access port management.
  • Experience configuring and supporting Cisco CUBE, Cisco Voice Gateways, and Cisco ATAs.
  • Working knowledge of Oracle SBCs and integration with VoIP systems.
  • Ability to troubleshoot and resolve VoIP quality issues at Layers 2 and 3.
  • Hands-on experience provisioning and supporting Polycom VoIP phones in an enterprise setting.
  • Familiarity with MDF / IDF telecom wiring and structured cabling best practices.
  • Strong attention to detail and ability to follow strict security and configuration protocols
  • Preferred Qualifications :

  • Certifications such as CCNA, CCNP, or equivalent networking credentials.
  • Experience in secure or classified federal environments.
  • Familiarity with Microsoft Teams Voice and Avaya platforms.
  • Experience documenting network configurations using Visio or similar tools.
  • Responsibilities :

  • Switch Configuration : Configure Cisco access layer switches, including VLANs, Power over Ethernet (PoE), and port settings to support IP telephony deployments.
  • Layer 2 / 3 Troubleshooting : Identify and resolve Layer 2 and Layer 3 issues impacting voice services, including call quality, network segmentation, and traffic flow.
  • Telecom Cabling : Perform telecom cabling and wiring in MDFs and IDFs to support physical VoIP infrastructure and connectivity.
  • Voice Gateway & SBC Configuration : Configure and troubleshoot Cisco CUBE and Oracle Session Border Controllers (SBCs) for VoIP integration.
  • Gateway Support : Configure and maintain Cisco Voice Gateways (e.g., VG410), supporting analog and digital voice connectivity as part of the unified communications environment.
  • ATA Configuration : Install and troubleshoot Cisco Analog Telephone Adapters (ATAs) to support legacy analog devices within an IP telephony environment.
  • VoIP Phone Provisioning : Provision, deploy, and troubleshoot Polycom VVX 300 / 400 / 500 series VoIP phones in coordination with Microsoft Teams or Avaya telephony backends.
  • Collaboration & Support : Work closely with telephony engineers, network teams, and IT support to deliver and maintain reliable voice communication services across the enterprise.
  • Documentation : Maintain accurate documentation of network and telephony configurations, wiring diagrams, and port assignments.
  • Compensation and Benefits :

    At NDi, we value our team and are committed to retaining top talent by offering competitive benefits and compensation packages. Our employee benefits package includes comprehensive health, dental, vision, pet, and legal insurance. Our corporate benefits include 401(k) retirement matching, paid leave, paid holidays, and health and wellness programs. In addition, we provide employer-paid life and disability insurance, professional development, education benefits, and much more to ensure our team has the resources they need to thrive on and off the job.

    Veterans First Commitment :

    As a Service-Disabled Veteran-Owned Small Business (SDVOSB), NDi is dedicated to hiring veterans and providing a supportive work environment that honors their service while recognizing the unique skills and experiences they bring to our organization.

    Commitment to Diversity :

    NDi is an Equal Opportunity Employer. We are committed to creating a diverse environment and are proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran or military status, citizenship, national origin, or any other basis prohibited by law in all phases of the employment process and compliance with applicable federal, state, and local laws and regulations. As a federal government contractor, NDi complies with all applicable affirmative action requirements.

    Apply Now : Take advantage of this unique opportunity to join one of the fastest-growing companies in Federal contracting!

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