Tcom - Network Support Senior Specialist

NTT DATA BUSINESS SOLUTIONS; Bengaluru; On-site; INR 1,400,000 - 1,800,000; Full time

Job summary

NTT DATA BUSINESS SOLUTIONS seeks a Tcom - Network Support Senior Specialist in Bangalore to manage advanced Cisco UC systems, including CUCM, Unity Connection, and E911 configuration. The role demands leadership in dial plan design, SIP trunking, and SRST survivability, with ongoing upgrades and security enforcement.

You will own complex incidents, liaise with Cisco TAC and carriers, and document best practices for L1/L2 teams. Hybrid/onsite work in a large enterprise environment is expected.

Qualifications

• Experience with CUCM design, deployment, and cluster management.
• Proficient with Unity Connection and Emergency Responder.
• Expert in dial plan design and SIP trunk management.

Responsibilities

• Perform advanced UC administration operations and incident ownership.
• Support integrations with SBCs, gateways, and contact centers.
• Design and implement Cisco UC solutions including CUCM clusters.
• Enforce UC security measures including E911 compliance.
• Plan upgrades and migrations (CUCM 12.x+).
• Create SOPs and knowledge-transfer docs for L1/L2 teams.
• Coordinate with Cisco TAC and carriers for escalations.

Skills

CUCM design

CUCM cluster mgmt

Unity Connection

E911 configuration

Dial plan design

SIP trunk mgmt

CUBE deployments

VoIP protocols

UC security

Vendor liaison

Education

BE/B.Tech or MCA

CCNP Collaboration

CCIE Collaboration preferred

ITIL v4 Foundation

Tools

Prime Collaboration

DNA Center

Cisco UC tools

Job description

Job Summary

We are currently seeking a Tcom - Network Support Senior Specialist to join our team in Bangalore, Karnataka, India.

Key Responsibilities

• Advanced UC Administration Operations: Perform advanced call routing, numbering-plan optimization, and feature configuration (hunt groups, call queuing, call forwarding, call admission control); own complex incidents and problems escalated from L2, delivering RCA and permanent fixes; ensure compliance with UC redundancy, failover, and disaster-recovery strategies.
• Integration Interoperability: Support integrations with SBCs, gateways (CUBE), PSTN providers, and contact center solutions (UCCE); ensure compatibility across hybrid UC environments (on-premises plus cloud UC such as Webex or Teams voice, where applicable).
• Architecture Design Leadership: Design and implement Cisco UC solutions, including CUCM clusters, SRST sites, SIP trunking strategies, and dial plan configurations; produce HLD/LLD documentation for UC deployments and migrations.
• Security Compliance: Enforce UC security measures and participate in E911 configuration and regulatory compliance audits.
• Upgrades Migrations: Plan and execute version upgrades, product migrations (CUCM 12.x+), and infrastructure refresh projects.
• Governance Documentation: Define UC best practices, SOPs, and knowledge-transfer documentation for L1/L2 teams.
• Vendor Coordination: Act as the primary liaison with Cisco TAC and carrier vendors for L3 escalations, service-request creation, and post-incident reviews.

Required Skills Experience

• Deep hands-on experience with Cisco Unified Communications Manager (CUCM), including design, deployment, and cluster management.
• Expertise administering Cisco Unity Connection (voicemail) and Cisco Emergency Responder (E911).
• Proven expertise in dial plan design (E.164 numbering, global route patterns, SIP normalization).
• Strong experience with SIP trunk management and SRST site-survivability configuration.
• Hands-on experience with CUBE (Cisco Unified Border Element) and voice gateway deployments (TDM, PRI, SIP).
• Strong knowledge of VoIP protocols: SIP, RTP, SRTP, MGCP, and H.323.
• Expertise in UC security best practices, including SRTP/TLS configuration and UC hardening.

Nice-to-Have Skills

• Experience automating UC provisioning (Python, PowerShell, Ansible) or using orchestration tools.
• Familiarity with UCCE (contact center) integrations.
• Knowledge of UC health-monitoring tools (Prime Collaboration, DNA Center, or equivalent).

Education Certifications

• BE/B.Tech, MCA, or equivalent degree in IT or Telecommunications.
• Cisco CCNP Collaboration required (or actively held) at this level; Cisco CCIE Collaboration (or written exam cleared) preferred; ITIL v4 Foundation an advantage.