Voice Provisioning Engineer I — Hosted Voice & SIP Activation

ADP, Inc.; Charlotte (NC); On-site; USD 65,000 - 90,000; Full time

Job summary

ADP, Inc. in Charlotte, NC, is seeking a Voice Provisioning Engineer I to provision, configure, test, and activate voice services for enterprise customers.

You will support Hosted Voice, SIP Trunking, and related services, ensuring accurate implementations and strong customer focus. This role emphasizes learning company voice products, provisioning systems, and carrier processes, with duties spanning order provisioning, CPE configuration (Adtran TA900-series, Grandstream), validation, and timely

Qualifications

• Understanding of VoIP, SIP trunking, Hosted Voice, and PSTN terminology.
• Familiarity with LNP, CSRs, LOAs, CNAM, and E911 concepts.
• Ability to learn Adtran gateways, Grandstream devices, and internal provisioning tools.
• Strong attention to detail, organization, problem solving, and communication.
• Ability to manage multiple assignments and meet deadlines in a collaborative environment.
• Proficiency with Salesforce and Microsoft Office suite.

Responsibilities

• Provision new voice services and moves/adds/changes/disconnects per designs and customer requirements.
• Configure Hosted Voice seats, call flows, auto attendants, hunt groups, voicemail, SIP trunks, and related features.
• Process Local Number Portability requests and review CSRs, LOAs, CNAM, E911, and supporting documentation for accuracy.
• Configure and prepare approved CPE, including Adtran TA900-series devices, Grandstream ATAs, and Grandstream handsets.
• Complete pre-install validation, support service turn-ups, test calling functionality, and document customer acceptance results.
• Troubleshoot routine provisioning and activation issues and coordinate escalations with vendors, carriers, Field Operations, NOC, and Engineering.
• Maintain accurate records in ticketing, provisioning, customer management, and project systems.
• Provide timely status, risk, dependency, and customer-impact updates to the manager and project stakeholders.

Skills

VoIP basics

SIP trunking

Hosted Voice

PSTN terminology

Customer service & communication

CRM tools (Salesforce)

Education

High school diploma

Technology/telecommunications degree preferred

CCNA or equivalent training

Tools

Microsoft Office

Teams

Outlook

Ticketing systems

CRM tools (Salesforce)

Job description

ADP, Inc. in Charlotte, NC, is seeking a Voice Provisioning Engineer I to provision, configure, test, and activate voice services for enterprise customers.

You will support Hosted Voice, SIP Trunking, and related services, ensuring accurate implementations and strong customer focus. This role emphasizes learning company voice products, provisioning systems, and carrier processes, with duties spanning order provisioning, CPE configuration (Adtran TA900-series, Grandstream), validation, and timely