Voice Engineer II — Teams & SIP Migration

Brio Energy

Carthage (MO)

On-site

USD 100,000 - 135,000

Full time

2 days ago

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Job summary

Leggett & Platt Inc. is seeking a Voice Engineer II to lead migrations from legacy telephony to Microsoft Teams Voice and SIP-based solutions.

You will design, implement, and operate enterprise voice systems, focusing on Direct Routing, CUCM, AudioCodes SBCs, and gateway integration. You will develop call flows, network diagrams, and runbooks while ensuring high availability, performance, and interoperability across Teams, Cisco UC, and carrier environments.

Qualifications

Bachelor's degree or equivalent combination of education and experience.
3-5 years of enterprise voice engineering experience.
Experience supporting Microsoft Teams Voice and Direct Routing.
Experience administering Cisco Unified Communications Manager (CUCM).
Experience supporting AudioCodes SBCs and media gateways.
Experience with voice migration projects involving PBX, TDM, PRI, analog, or SIP-based technologies.
Strong understanding of SIP, RTP/SRTP, TLS, PSTN Connectivity, Voice Routing, QoS, VoIP Networking.
Experience creating technical documentation, call flow diagrams, and implementation procedures.

Responsibilities

Support migrations from legacy PBX, TDM, PRI, and analog telephony systems to Microsoft Teams Voice and centralized SIP-based services.
Assist with implementing approved voice designs, migration plans, technology upgrades, and modernization initiatives.
Develop and maintain high-level designs, low-level designs, call flow diagrams, network diagrams, migration runbooks, and operational documentation.
Configure and support Microsoft Teams Phone, including Direct Routing, dial plans, voice routing policies, Auto Attendants, Call Queues, Resource Accounts, and emergency calling policies.
Administer and maintain AudioCodes SBCs and gateways supporting Direct Routing, SIP trunking, and enterprise voice services.
Assist with migrations and support of analog devices including paging systems, overhead speakers, elevator phones, emergency phones, door phones, alarm dialers, and fax services.
Configure and support Cisco Unified Communications Manager (CUCM), including SIP trunks, route patterns, translation patterns, calling search spaces, partitions, device pools, and dial plans.
Support interoperability and coexistence between Microsoft Teams, Cisco UC platforms, AudioCodes infrastructure, and telecommunications carriers.
Assist with E911 and Dynamic Emergency Calling deployments, testing, location management, and ongoing support.
Troubleshoot SIP, RTP, SRTP, TLS, voice routing, call quality, codec negotiation, and interoperability issues across voice platforms.
Analyze SIP traces, AudioCodes logs, CUCM traces, Teams Call Analytics, CQD reports, and packet captures to identify and resolve service issues.
Support SIP trunk deployments, carrier integrations, telephone number porting activities, and transitions from traditional telephony services to SIP architecture.
Participate in system upgrades, maintenance windows, firmware updates, testing activities, disaster recovery exercises, and production cutovers.
Provide Tier I and Tier II operational support and collaborate with network, security, infrastructure, and carrier teams to maintain highly available voice services.