Key Responsibilities

• Design, deploy, configure, and maintain Polycom, Cisco Unified Communications systems, including CUCM (Cisco Unified Communications Manager), Cisco Contract Center, Cisco Webex, and Voice Recording.
• Manage and support Cisco voice gateways, session border controllers (SBCs), and IP telephony endpoints (phones, video devices).
• Implement and troubleshoot VoIP protocols: SIP, H.323, MGCP, 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 (Active Directory, DNS, Certificates, Network).
• Work closely with network, security, and operations teams to ensure QoS, redundancy, and security of voice traffic.
• Develop and maintain documentation: dial plans, call flow dia...