Network Voice Admin(Cisco UCM)

Tata Consultancy Services; New Delhi, Chennai; On-site; INR 1,200,000 - 2,000,000; Full time

Job summary

Tata Consultancy Services Limited is seeking a Network Voice Admin with 6–8 years of experience to support Cisco UC environments in Chennai/Delhi. You will manage CUCM, CUC, IM&P, and related components, handle SIP/VoIP issues, and contribute to rollout and ongoing stabilization of voice services.

Candidate should be proficient in Cisco IOS CLI, RTMT, VMware UC deployments, and ITIL-aligned incident/problem/change processes, with strong dial plan and QoS knowledge.

Qualifications

• Good understanding and experience with Cisco Unified Communications stack (CUCM, CUC, IM&P).
• Hands-on with Cisco Expressway, CUBE/Voice Gateway, Webex/Teams Voice, and Recording Servers.
• Strong SIP/RTP knowledge and VOIP troubleshooting using IOS CLI and RTMT.
• Knowledge of dial plans, call routing, QoS, TCP/IP, DNS, DHCP, NTP, VLANs.
• Familiarity with PKI, TLS, certificates, and certificate management in Cisco environments.
• Familiarity with ITIL processes: Incident, Problem, Change Management.

Skills

CUCM

CUC

IM&P

Expressway

CUBE/Voice Gateway

Webex/Teams Voice

Recording Servers

SIP

RTP

Dial Plans

Voice Routing

SIP Troubleshooting

Cisco IOS CLI

VMware UC

Networking Basics

PKI/TLS

ITIL

Tools

Cisco IOS CLI

VMware UC

Cisco RTMT

Job description

Role-Network Voice Admin(Cisco UCM)

Experience-6 to 8 yrs.

Location-Chennai/Delhi.

Desired Competencies (Technical/Behavioral Competency)

Must-Have-

Good understanding and experience working with one or more of the following:

• Cisco Unified Communications
• Manager (CUCM)
• Cisco Unity Connection (CUC)
• Cisco IM & Presence (IM&P)
• Cisco Expressway
• Cisco CUBE/Voice Gateway
• Cisco Webex/Microsoft Teams Voice
• Recording Servers

Strong understanding of SIP, RTP, SCCP, VOIP calls and hands-on experience on Cisco IOS CLI.

Good knowledge of dial plans, call routing and voice gateway concepts.

Experience troubleshooting voice quality issues, registration failures and SIP-related issues. Experience using Cisco RTMT for monitoring and troubleshooting.

Familiarity with VMware-based UC deployments.

Basic understanding of networking concepts including TCP/IP, DNS, DHCP, NTP, VLANs and QoS.

Knowledge of certificates like PKI, Certificate management, CSR generation, certificate renewal, security concepts and TLS in Cisco Collaboration environments.

Familiarity with ITIL processes including Incident, Problem and Change Management.

Good-to-Have

• Ability to work effectively in a 24x7 support environment
• And collaborate with cross-functional teams. Exposure to service transition projects, especially right after a Greenfield UC deployment.