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🥝 Cisco Unified Communications Engineer (L3)
NTT Limited | petaling jaya, Malaysia | Posted June 15, 2026
Job Description
Key Responsibilities
- Design, deploy, configure, and maintain Polycom and Cisco Unified Communications systems, including CUCM, Cisco Contact Center, Cisco Webex, and Voice Recording.
- Manage and support Cisco voice gateways, session border controllers (SBCs), and IP telephony endpoints (phones and video devices).
- Implement and troubleshoot VoIP protocols such as SIP, H.323, MGCP, and SCCP.
- Monitor UC system performance, perform capacity planning, and maintain high availability.
- Perform software upgrades, patches, and backups of UC systems.
- Provide L2/L3 support for UC incidents, escalations, and change management.
- Integrate UC with other infrastructure components such as Active Directory, DNS, certificates, and network services.
- Collaborate with network, security, and operations teams to ensure QoS, redundancy, and security of voice traffic.
- Develop and maintain documentation, including dial plan...