Track Lead - Cisco Unified Communications
India
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Job Description
Track Lead - Cisco Unified Communications
Gautam Buddha Nagar, Uttar Pradesh

Job Summary

 Job Summary : Role Overview We are looking for a skilled Ribbon SBC Engineer to support, manage, and optimize Session Border Controller infrastructure within a complex enterprise/UCC environment. 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. 

Key Responsibilities

Job Responsibilities : Key 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: o SIP trunks, dial plans, routing policies o Transformation tables (SIP header manipulation) o TLS/SRTP configurations for secure communication • Support new deployments, migrations, and upgrades • Integrate SBC with: o Microsoft Teams (Direct Routing) o Skype for Business / Lync o CUCM / other PBX platforms Troubleshooting • Diagnose issues related to: o SIP signaling (INVITE, REGISTER, BYE flows) o Call failures, one-way audio, call drops o Codec mismatches and media negotiation (RTP/SRTP) • Use tools like: o Ribbon SBC logs & traces o Wireshark / packet captures • Work with carriers/vendors for end-to-end issue resolution Security & Compliance • Implement and maintain: o SBC security policies o Access control and firewall configurations • Ensure compliance with: o Enterprise security standards o 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 Required Skills Technical Skills • Hands-on experience with Ribbon SBC / Sonus SBC • Strong understanding of: o SIP protocol & VoIP architecture o RTP/SRTP, TLS o Voice codecs (G.711, G.729, Opus) • Experience in Microsoft Teams Direct Routing is highly preferred • Knowledge of: o Networking basics (TCP/IP, DNS, NAT, VLANs) o Firewall and load balancing concepts Tools & Platforms • Ribbon SBC management tools • Wireshark / SIP trace utilities • Monitoring tools (SolarWinds, Nagios, etc.)

Skill Requirements

Skill Requirement : Soft Skills • Strong troubleshooting and analytical skills • Good communication skills (customer-facing role) • Ability to handle high-priority incidents and escalations • Team collaboration and cross-functional coordination Experience & Qualifications • 3–8 years of experience in voice/telecom infrastructure support • Bachelor’s degree in Engineering / IT / Telecom (or equivalent) • Ribbon / Sonus certification (preferred) • Microsoft Teams / UCC certification is an added advantage Key Deliverables • High availability of SBC platform • SLA adherence and incident resolution • Seamless voice service experience • Secure and optimized voice infrastructure

Other Requirements

Other Requirement : Good to Have • Experience in cloud voice (Azure, Teams Voice) • Exposure to multi-vendor voice environments • Knowledge of PowerShell / scripting
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Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 227,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending March 2026 totaled $14.7 billion.