> Markdown version of [/jobs/ext/4544078-network-voice-administrator](https://www.wearedevelopers.com/jobs/ext/4544078-network-voice-administrator). 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).

---

# Network Voice Administrator

- **Company:** TEKSYSTEMS INC.
- **Location:** United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Server Applications, Border Gateway Protocol, VoIP, Cisco Unified Communications Manager, Cisco PIX, Cyber Security, Computer Networks, System Configuration, G.711 Standard, Internet Protocol Security (IP SEC), Internetworking, MPLS VPN, Routing, Oracle (Applications), Real-Time Transport Protocol, Ribbon (Software), Firewalls (Computer Science), SC Clearance, Cisco, Soft Switches
- **Published:** November 3, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8707164/network-voice-administrator

## About the Role

1) 4-8 years of experience
2) Secret clearance (will upgrade and run SSBI), Sec+, CCNA preferred
3) Ribbon / Cisco / Avaya (avaya going end of life) experience, * Requires BS and 4-8 years of prior relevant experience or Masters with 2-6 years of prior relevant experience.

 * Currently possess DoD 8750 certification at IAT level II, Security+ CE or equivalent to meet requirement.
 * Experience with one or multiple Cisco, Avaya or Oracle voice platforms including Cisco Unified Communications Manager (CUCM), Cisco Unity, Cisco Unified Border Element (CUBE), Oracle Session Border Controller (SBC) and Avaya Aura Application Server.
 * Expertise in SIP internetworking signaling and call flow.
 * Demonstrable experience of advanced fault analysis to isolate and diagnose network problems for routing, switching, security and large scale voice implementations.
 * Currently possess an active Secret security clearance.

 * Working knowledge of Secure Real-Time Transport Protocol (SRTP) including associated G.711 and G.729 codecs and Digital Tone Multi Frequency (DTMF).
 * Experience with Cisco Unified Communications Manager and or Avaya Aura soft switches.
 * Experience with Oracle SBCs and other voice media gateway appliances.
 * Experience supporting distributed firewall infrastructure.
 * Experience creating/supporting IPSec MPLS VPN infrastructure
 * Experience implementing and supporting BGP routing protocols
 * Experience designing, configuring and troubleshooting QoS classification, marking and prioritization of network traffic (voice, critical applications, etc.).
 * Familiarity with IPSec implementation and troubleshooting.
Additional Skills & Qualifications
Platforms - Voice over IP experience / call manager is great to have

 - Ribbon communications / oracle sbc's are the main focus of this specific position - Ribbon is a secure cloud provider and a recently implemented platform for DISA PAC
 - Towards end of life on avaya platforms
 - Team size: 6 including this individual
 - Off of TDM now, it's all IP / VOICE
 - SIP protocol experience
 - Standard networking (IP/r&S/virtualization - VMWare/firewall - primarily cisco ASA's)
Probably need someone with more experience at the sys admin level - device admin exp - routing and switching