SUMMARY

• Dynamic performer with 6 years plus of experience for Routing, Switching, VoIP and Cisco unified communication products.
• Experienced with Cisco Unified Communication Portfolio, Cisco Unified Communications Manager (CUCM), Call Manager Express (CUCME), Cisco Unity Connection (CUC), Unified Contact Center Express (UCCX), IM and Presence.
• Worked extensively in Cisco Voice Gateways 2800, 2900,3800,3900,4300, Cisco Switches 6500, 3550, 2900 and Codecs (G711, G729).
• Worked on Cisco IP - Phones 7931, 7940, 7941, 7945, 7965, 7975, 8831, 8841, 8941,and Jabber.
• Good knowledge in VoIP, SIP, MGCP, H.323, PRI, SIP Trunking and Analog (FXS/FXO) Voice Protocols, Routing Protocol (OSPF, EIGRP, IGRP, RIP), Transport Layer Protocols TCP, UDP, and IP Subnetting.
• Have experience in debugging Call Flows, Call Routing, and Gateway by analyzing topology diagrams.
• Have good understanding of secure voice TLS and SRTP.
• Good knowledge in Layer 2 technologies & Layer 3 technologies.
• Knowledge in virtualization (VMware) technologies such as vSphereEXSi, and vSphere client.
• Hands on experience in using telecom test equipment's and analyzers.
• Have ability to troubleshoot system failures up to the subsystem or component level for isolating problems and getting the root cause.
• Good experience in working with customers and support teams to reproduce the issues at local lab.
• Installation and monitor Windows Server 2000,2003 & 2008, Mac Server and Linux

TECHNICAL SKILLS

Software: Unified CM (Call Manager 7.1.3, 8.6.2, 9.1.2, 10.5.2), Unity, Unity Connection, Unity Express, Cisco Unified Contact Center Express (UCCX),Cisco IM & Presence, WebEx

Features: CME, SIP Gateways, SIP Trunking, Emergency Responder

Protocols: H.323, SCCP, SIP, MGCP, RTP

Cisco IP-Phones: 79XX, 89XX, 99XX, Cisco CTS andCisco Soft clients, Jabber

Codecs: G711, G729

Protocols: TCP/IP, LTP/UDP, RIP (V1, V2), EIGRP, OSPF, VTP, STP, RSTP, ICMP, DNS, DHCP, FTP, HTTP/S, TFTP, DHCP

Software: Wireshark, Ethereal, Network Analyzer, Solarwinds, Putty, TeraTerm, inVMWare VSphere Client, Packet Tracer, GNS3 and Mat-Lab

Operating Systems and IOS: Windows 10, 8.1, 7, XP, 2003, 2000, 98/95. LinuxUbuntu, Redhat Cisco IOS 12.x, 15.x.

PROFESSIONAL EXPERIENCE

Confidential, VA

Sr. VoIP Engineer

Responsibilities:

• Monitor site statistics and system performance daily; Answer and respond to site alarms.
• Provide engineering and support expertise on Cisco Unified CM Administration to include Cisco Call Manager version 9.1, CCEX, Cisco Unified Call Manager, Cisco Unity Connection, Cisco IM and Presence, Jabber 10.5, and UCCX.
• Configured H323, SIP & MGCP Gateways.
• Server maintenance through VMWare.
• Work with and interfacing SIP trunks for call termination.
• Perform all software and patch upgrades to voice network devices including IOS upgrades for Cisco 4500 L3 series POE switches.
• Establish and maintain maintenance logs for all voice network devices.
• Served as SME for Cisco Unified Contact Center Express and associated peripheral devices including Cisco IP Communicator.
• System Administrator for Corporate Share Drives, Symantec Backup Exec, WSUS, Sophos Anti-Virus, and other various Microsoft Windows Servers 2008 R2 w/Windows 7 and Windows 8 in a VMware VSphere environment 5.0 and 5.5.
• Provide technical support and training to end-users.

Environment: CUCM, CME, CUC, Voice-mails, Voice gateways, Cisco Unified Presence Communicator, IP Phones, SIP, H.323, PRI, Gatekeeper, Cisco Call Manager 9.1, VMware, VSphere Esxi, FXS/FXO, Troubleshooting.

Confidential

VoIP Engineer

Responsibilities:

• Enhanced performance of operations and 600+ employees across several facilities such as Flight Information Services, Public Announcements, Baggage Handling, Fire-Fighting, Cargo, Airport police, car parking and Air Traffic Control by strategically planning, driving and supporting NEC and PBX systems migration to Cisco Call Manager VoIP System. Once migration was completed, continued to provide support on all modifications. Served as onsite technical assistant for remote trouble shooting and upgrades.
• Successfully provided preventative maintenance, troubleshooting, and administrative support for the Tandberg VTC (teleconferencing) network and 24x7 Network Operations Center.
• Efficiently provided support for all integrated audio systems and ancillary equipment including NEC, AMX.
• Engineered innovative applications and integrations, including voicemail dial trees, “In Progress Call Recording”, Automated Call Distributions, and report generation.
• Assisted IT department with Desktop and Peripheral Equipment support.
• Established and administered facilities inventory database for optimal space allocation and up to date Cable, Phone Directory, and End User records.
• Migration from 2500 series to 2600 series Routers.
• Configuration & maintenance of Cisco2600 series routers with OSPF protocols.
• Upgrade the network by translating protocols like EIGRP to OSPF.
• Redistribution from RIP to OSPF and vice versa by implementing Hub and Spoke topology with a Frame Relay Switch.
• Maintenance and Up-gradation of AGL Systems at Brunei Shell Aviation.
• Implementation of A-VDGS (Aircraft Visual Docking Guiding System) at Confidential .
• Implementation of ELV Systems (Flight Information Display System, Public Addressing and (Master Clock) at Confidential .
• Implementation of Low Level Wind Shear Alert System for Confidential

Environment: Cisco Call Manager 7.x, 8.x, Cisco UCCX, Cisco Unity 7.x, 8.x, SIP trunks, Inter cluster trunks, MGCP phones, H.323 dial plans, Cisco UCCX, Safe Gate AVDGS,SELEX low level wind shear alert system, Windows.

Confidential

Network /Voice Engineer

Responsibilities:

• Configuring and Managing POTs andVoIP Dial-Peers.
• Performed day to day support of Cisco Communications Manager (7.1.3 and 8.6.2) cluster.
• Configuring and Managing Voice Protocols, SIP, and SCCP.
• Configuring Route Group, Route List, Route Pattern, CSS and various services within Cisco Call Manager.
• Configured Virtual IP's (VIP) and virtual servers. Configured pool and pool members and associated it to the virtual server. Configured loadbalancing methods
• Troubleshooting VoIP related issues related to call manager, IP Phones and voice mail.
• Configuration, Managing and Troubleshooting Cisco Voice Gateways 2821, 3845, VG224.
• Resolved ticket escalations for Call Manager, Call Manager Express, Unity Connection and Unity Express.
• Configuration and implementation of various protocols on 2800 series router for efficient performance of network.
• VLAN Configurations, troubleshooting and Firewall ACLs and Object-Groups configuration and support.
• Configuration & maintenance of Cisco 2900 series switches including VLANS and TRUNKING protocols.
• Implemented CCTV (Closed Circuit Television) of Avigilon make for the surveillance.
• Experience with various scanning & sniffing tools Wireshark.
• Monitor, evaluate & report on health of both Wide and Local Area (WAN/LAN) Networks.
• Installed Clearone intercom services throughout the conference and meeting halls in Confidential for crew conversations during conferences.
• Maintenance of the whole network and troubleshooting the network issues for efficient performance.

Environment: POTs, VoIP Dial-Peers, Cisco Communications Manager (7.1.5, 8.0.3), Presence Communicator, Search Spaces, SIP trunks, SCCP, Inter cluster trunks, MGCP phones, H.323 dial plans, Cisco UCCX, MS Office, Windows. Routers and Switches, IP Subnetting, Firewall Access List, EIGRP, OSPF, WAN, VLANs,Clearone and Troubleshooting.

Confidential

Network Engineer

Responsibilities:

• Involved in LAN, WAN development (including IP address planning, designing, installation, configuration, testing, maintenance etc.
• Key contributions include troubleshooting of complex LAN /WAN infrastructure that include routing protocols EIGRP & BGP
• Established PABX telephony network, involved in migrating the old telephony system to newer ones (Panasonic to Alcatel).
• Responsible for the installation, configuration, maintenance and troubleshooting of the client network and partner WAN connectivity.
• Performed OSPF, BGP, DHCP Profile, HSRP, IPV6, Bundle Ethernet implementation on ASR 9K redundant pair
• Performing the ACL requests change for various clients by collecting source and destination information from them
• Experience with various scanning & sniffing tools Wireshark.
• Implementation of TCP/IP and related services - DHCP/DNS and configuration of VPN tunnels
• Used DHCP to automatically assign reusable IP addresses to DHCP clients
• Implemented NAT solutions in Cisco IOS routers and VTP on core switches
• Setting up VLANS and configuring ISL trunk on Fast-Ethernet channel between switches
• Perform networkdevices and workstation routine maintenance as Operating Systems upgrade or updates, drivers and firmware updates

Environment: Alcatel PABX, Firewall Access List, EIGRP, OSPF, WAN, VLANs, Wireshark and Troubleshooting.