Enterprise Voice Engineer II

C3EL-posted 2 months ago
Mid Level
Scott AFB, IL
11-50 employees
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C3EL is seeking a cleared and experienced Enterprise Voice Engineer to join our team on-site at Scott AFB in IL. In this role, you’ll provide technical expertise to sustain, maintain, and enhance critical Defense Information Systems Agency (DISA) voice services—supporting secure, reliable, and mission-ready communications for the Department of Defense and national security organizations.

  • Perform engineering tasks to maintain a large, complex and highly resilient IP voice and video communications infrastructure.
  • Manage, configure, troubleshoot and assure service supporting all aspects of a voice, video and data network.
  • Perform system maintenance, support capacity planning activities and complete configuration change actions and documentation efforts.
  • Configure and implement calling search spaces, route plans, route partitions, route lists and device profiles.
  • Configure Cisco or Juniper routing and switching devices.
  • Support distributed firewall infrastructure.
  • Provide input in the development of technical policy, work instructions and reporting in support of an enterprise IP telephony network.
  • Analyze and resolve complex technical problems utilizing foundational knowledge of SIP signaling and call-flows.
  • Analyze and resolve remote site registration, signaling and media problems.
  • Validate change requests and ensure accuracy.
  • Perform fault analysis and configuration of voice subscribers, call handlers and call routing rules.
  • Perform fault analysis and configuration of Cisco and or Juniper routing and switching rules.
  • U.S. Citizenship.
  • An active, in-scope US Government issued Top Secret/SCI clearance.
  • Current DoD-8570 IAT Level 2 baseline certification (Security+ CE, or equivalent).
  • 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.
  • 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.
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