Job Description
TCS is Hiring for Network Voice Admin(Cisco UCM)
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nMode Of Interview:- Virtual
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nDate Of Interview:- 20-08-2026
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nlocation:- Chennai/Delhi
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nNotice Period:- Immediate joiner
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nExp:- 4-6yr
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nMust Have:-
nCUCM, CUC, IMP, Cube, SIP, Cisco Expressway, Cisco Webex and MS Teams Voice
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nJD
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nGood understanding and experience working with one or more of the following:
nCisco Unified Communications
nManager (CUCM)
nCisco Unity Connection (CUC)
nCisco IM & Presence (IM&P;)
nCisco Expressway
nCisco CUBE/Voice Gateway
nCisco Webex/Microsoft Teams Voice
nRecording Servers
nStrong understanding of SIP, RTP, SCCP, VOIP calls and hands-on experience on Cisco IOS CLI.
nGood knowledge of dial plans, call routing and voice gateway concepts.
nExperience troubleshooting voice quality issues, registration failures and SIP-related issues. Experience using Cisco RTMT for monitoring and troubleshooting.
nFamiliarity with VMware-based UC deployments.
nBasic understanding of networking concepts including TCP/IP, DNS, DHCP, NTP,



VLANs and QoS.
nKnowledge of certificates like PKI, Certificate management, CSR generation, certificate renewal, security concepts and TLS in Cisco Collaboration environments.
nFamiliarity with ITIL processes including Incident, Problem and Change Management.
nGood-to-Have
nAbility to work effectively in a 24x7 support setting
nAnd collaborate with cross-functional teams. Exposure to service transition projects, especially right after a Greenfield UC deployment.
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nResponsibility of / Expectations from the Role
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- Provide operational support for a large-scale Cisco Unified Communications (UC) and Collaboration environment via ticketing tool (Service Now)n
- Monitor and support Cisco Collaboration infrastructure to ensure high availability and service continuity.n
- Troubleshoot and resolve incidents related to voice, video and collaboration technologies within defined SLAs.n
- Support Ci

📌 Network Voice Admin(Cisco UCM) (Tamil Nadu)
🏢 Tata Consultancy Services
📍 Tamil Nadu