About the Company

Here is a professional Job Description (JD) for Ribbon SBC (Session Border Controller) – Infrastructure Support role, tailored for enterprise telecom / UCC environments:

About the Role

We are looking for a skilled Ribbon SBC Engineer to support, manage, and optimize Session Border Controller infrastructure within a complex enterprise/UCC workplace. The role involves L2/L3 support, troubleshooting, configuration, and maintenance of Ribbon (Sonus) SBC platforms to ensure high availability, security, and performance of voice services.

Responsibilities

Operations & Support
Provide L2/L3 support for Ribbon SBC (Sonus SBC 1000/2000/5000 series)
Monitor system performance, availability, and capacity of SBC infrastructure
Handle incident management, problem management, and service requests
Perform root cause analysis (RCA) for voice and signaling issues
Ensure adherence to SLA/KPI compliance
Configuration & Implementation
Configure and manage: SIP trunks, dial plans, routing policies
Transformation tables (SIP header manipulation)




TLS/SRTP configurations for secure communication
Support new deployments, migrations, and upgrades
Integrate SBC with: Microsoft Teams (Direct Routing), Skype for Business / Lync, CUCM / other PBX platforms
Troubleshooting
Diagnose issues related to: SIP signaling (INVITE, REGISTER, BYE flows)
Call failures, one-way audio, call drops
Codec mismatches and media negotiation (RTP/SRTP)
Use tools like: Ribbon SBC logs & traces, Wireshark / packet captures
Work with carriers/vendors for end-to-end issue resolution
Security & Compliance
Implement and maintain: SBC security policies
Access control and firewall configurations
Ensure compliance with: Enterprise security standards, Telecom best practices
Automation & Optimization (Good to Have)
Involve in automation of routine activities
Support scripts for configuration backup, health checks
Continuous improvement of voice infrastructure

Qualifications

Technical Skills

Hands-on

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