CHANDAN KUMAR
Voice Network Designer, Collaboration Engineer
New Delhi
Summary
- Over a decade of experience for managing and securing Cisco Unified Communications infrastructure and various VoIP technologies.
- Expertise in managing Complex VoIP Environments with System Security, Reliability and Uninterrupted service delivery across multi-site network design.
- Experienced in integrating VoIP System with Legacy Exchange using various analog, digital and IP based methods to enhance organization existing capability.
- Hands on in Endpoint Security, Threat Detection and Incident Response.
Overview
14
14
years of professional experience
4034
4034
years of post-secondary education
2
2
Languages
2
2
Certificates
Work History
System Administrator, Windows Patch Management
Indian Air Force
08.2022 - Current
- Achieved more than 85% compliance rate for endpoints.
- Utilized SIEM tool to analyze security events and identify potential threats across the network.
- Managed and maintained EDR Platform to monitor and respond to endpoint threats.
- Performed Vulnerability Assessments and coordinated patch management efforts to mitigate risks.
- Conducted regular audits of security infrastructure, identifying weaknesses and recommending improvements.
- Installed important security and functionality patches to maintain optimal protections against intrusion and system reliability.
Escalation Engineer, Collaboration and VoIP Security
Indian Air Force
08.2016 - 08.2022
- Cisco Unified Communication Manager Administration and Troubleshooting.
- Hands-on experience in designing, implementing, and maintaining Cisco UC solutions to enhance organizational communication and collaboration capabilities.
- Tasked to manage more than 25K VoIP Endpoints with seamless efficiency.
- Streamlined Troubleshooting Processes by creating detailed diagnostic guides for common technical issues encountered in daily operations.
- Successfully upgraded Cisco Unified Communications Manager (CUCM) from version 8.5 to version 12.0 without OEM Support.
- Handled Level 3 Escalation Tickets for Collaboration and VoIP Security Solutions.
- Experienced in Integration of VoIP infrastructure with Legacy Telephony System through Voice Gateway using E1/T1 and SIP capable legacy exchange through CUBE.
- Led training sessions on new Voice Technologies, ensuring staff remained up-to-date on current trends in the field.
- Conducted regular audits of voice systems to ensure compliance with organization standards and best practices, minimizing security risks.
- Implemented Disaster Recovery Plan for critical voice infrastructure components, ensuring uninterrupted Voice Service.
- Deployed and configured Cisco ISR 4331 voice gateways with SRST capabilities to guarantee business continuity during network outages.
- Implemented Splunk-based monitoring systems for proactive alerting, log management, and real-time diagnostics to ensure operational excellence.
Technical Specialist, Collaboration
Indian Air Force
08.2011 - 08.2016
- Started career in Network Operation Centre as an L1 Collaboration Engineer.
- Deploying and configuring Cisco ISR 4331 voice gateways with SRST capabilities for guaranteed availability of Voice Service during network outages.
- Enhanced Customer Satisfaction by efficiently addressing and resolving voice-related issues.
- Proficiency in using Ticketing Systems (e.g. HP OpenView Service Desk and Service Manager).
- Familiarization with Informacast (Singlewire) System.
- Cisco Unified Attendant Console (CUAC) Configuration, Administration and Attendant Readiness Console (ARC) Administration.
- Familiarity with network monitoring tools (e.g. HP Network Node Manager and Zabbix).
Education
B.E. - Electronics and Communication
The Institution of Engineers, India
Kolkata, India11-2020
Dipoloma - Electronics
Indira Gandhi National Open University
New Delhi, India08-2012
Skills
Voice Signaling Protocols (SIP, SCCP, MGCP, H323)
Network Protocols (TCP/IP, UDP)
Wireshark
Splunk
Voice Gateways and Gatekeepers
IP Telephony
Call Routing
VoIP Security
SIP Trunking
Voice Network Design
Team Building
Awards
- Appreciation by Station Commander, Indian Air Force, Mumbai
- Certified SOC Analyst, EC Council
Certification
CCNA Collaboration
Timeline
Certified SOC Analyst
07-2024
System Administrator, Windows Patch Management
Indian Air Force
08.2022 - Current
CCNA Collaboration
11-2017
Escalation Engineer, Collaboration and VoIP Security
Indian Air Force
08.2016 - 08.2022
Technical Specialist, Collaboration
Indian Air Force
08.2011 - 08.2016
B.E. - Electronics and Communication
The Institution of Engineers, India
Dipoloma - Electronics
Indira Gandhi National Open University