NG9-1-1 Telephony NENA SME

Key Responsibilities

Standards & Compliance

• Ensure NENA and APCO standards are met throughout the NG9-1-1 implementation.
• Incorporate applicable federal, state, and professional organization standards and guidelines into the NG9-1-1 system design.
• Review and assess the adequacy of NYC’s Call Handling requirements.

Requirements & Stakeholder Engagement

• Translate business needs into clearly defined requirements and user stories; lead prioritization and validation with project teams.
• Conduct stakeholder analysis and plan elicitation activities, tasks, and timelines.
• Engage public safety and partner agencies to understand their needs, issues, and concerns.

Technical Design & Validation

• Design and validate call routing workflows per NENA STA-010, STA-012, and STA-019.
• Ensure correct implementation of ECRF/LVF functions for location-based routing and dispatch.
• Maintain mappings between ESRP, BCF, and CHS components for voice, text, and multimedia calls.
• Configure and analyze SIP messaging, SDP negotiation, and trunk performance across SBCs and gateways.
• Partner with network and integration engineers on ESInet QoS, DSCP tagging, and failover routing.
• Validate carrier connectivity for private IP trunk services.

Testing, Troubleshooting & Cutover

• Develop and maintain call-flow diagrams, signaling validation scripts, and interoperability matrices across PSAC I, PSAC II, and vendor sites.
• Work with the Lead Test Engineer on test scripts and call-flow verification plans for production readiness.
• Support call path redundancy testing and performance benchmarking between PSAC I, PSAC II, and NGCS vendor data centers.
• Analyze SIP traces, CDRs, and packet captures to validate system behavior under load and failover.
• Support testing, troubleshooting, and cutover events for critical voice infrastructure.
• Collaborate with MSCI, Motorola, NICE, Cisco, and telecom carriers to resolve interoperability, signaling, and audio quality issues.

Mandatory Qualifications

Candidates without all mandatory qualifications will not be considered.

• 12+ years of experience in a technical and/or business application, product, platform, or methodology.
• Hands-on experience developing call-flow diagrams, signaling validation scripts, and interoperability matrices in multi-site environments.
• Experience working with MSCI, Motorola, NICE, Cisco, and telecom carriers on interoperability, signaling, and audio quality issues.
• Experience supporting testing, troubleshooting, and cutover of mission-critical voice infrastructure.
• Experience designing and validating call routing per NENA STA-010, STA-012, and STA-019.
• Strong SIP/SDP expertise, including trunk performance analysis across SBCs and gateways.
• Working knowledge of NG9-1-1 functional elements (ESRP, BCF, CHS, ECRF, LVF) for voice, text, and multimedia.
• Experience with ESInet QoS, DSCP tagging, and failover routing.
• Experience validating carrier private IP trunk connectivity.
• Experience with redundancy testing and performance benchmarking across data centers.
• Proficiency analyzing SIP traces, CDRs, and packet captures under load and failover conditions.
• Experience developing test scripts and verification plans for production readiness.

Preferred Qualifications

• Excellent communication, business writing, and interpersonal skills.
• Knowledge of public safety / emergency communications environments.
• Design experience in IP voice management, auditing, and monitoring.
• Knowledge of logging and recording technologies for legacy and IP PBX systems.
• Ability to work fluently with internal teams and external partners across services and troubleshooting sessions.