SUMMARY

• Dynamic performer wif around 6 years of experience for Routing, Switching, VoIP and Cisco unified communication products.
• Experienced wif 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 3600, 3745, 3845, 2600, 2500, 3900E, Cisco Switches 6500, 3550, 2900 and Codecs (G711, G729).
• Worked on Cisco IP - Phones 7931, 7940, 7941, 7965, 7975, 8941,Cisco CTS,Cisco Soft clients and Jabber.
• Good noledge 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.
• Has experience in debugging Call Flows, Call Routing, and Gateway by analyzing topology diagrams.
• Has good understanding of secure voice TLS and SRTP.
• Good noledge in Layer 2 technologies & Layer 3 technologies.
• Knowledge in virtualization (VMware) technologies such as vSphereEXSi, and vSphere client. Worked on MCS 7821-I1 and UCS C220 series.
• Has a good noledge on xDSL technologies, specifically in validation of VDSL/SHDSL/ADSL routers and DSLAMs.
• Hands on experience in using telecom test equipment's and analyzers.
• Has ability to troubleshoot system failures up to the subsystem or component level for isolating problems and getting the root cause.
• Good experience in working wif customers and support teams to reproduce the issues at local lab.

TECHNICAL SKILLS

Software: Unified CM (Call Manager 7.1.5, 8.0.3, 8.5 and 10.1), Unity, Unity Connection, Unity Express, Cisco Unified Contact Center Express (UCCX), 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 Network Hardware/Software

Hardware: Routers (Cisco 2821, 3825, VG 3600, 3745, 3845, 2600, 3900E) Switches (4500, 6500, 3550, 2900)

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

Software: Wireshark, Etheiral, Network Analyzer, Solarwinds, Putty, TeraTerm, VMWare Vsphere Client, Packet Tracer, GNS3

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

PROFESSIONAL EXPERIENCE

Confidential, Dallas, TX

Cisco 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.
• Work wif 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.
• Participate in special projects as required.

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, Frisco, TX

VoIP Engineer

Responsibilities:

• Enhanced performance of operations and 600+ employees across 4 facilities 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.
• Tasked wif the management of all cell phone communications for 800+ employees across numerous locations nationwide to include vendor management.
• 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, Extron, Gentner, Clearone.
• Engineered innovative applications and integrations, including voicemail dial trees, “In Progress Call Recording”, Automated Call Distributions, and report generation.
• Assisted IT department wif 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.

Environment: PBX, 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, Windows.

Confidential, Chicago, IL

Network Engineer

Responsibilities:

• Configuring and Managing POTs andVoIP Dial-Peers.
• Performed day to day support of Cisco Communications Manager (7.1.5, 8.0.3) cluster.
• Configuring and Managing Voice Protocols, SIP, and SCCP.
• Configuring Route Group, Route List, Route Pattern, CSS and various services wifin Cisco Call Manager.
• 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.

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.

Confidential

Network Support Engineer

Responsibilities:

• Replacement of outdated Cisco switches & routers in existing data centers and installation of new Cisco switches & routers.
• Responsible for layer 2 security which was implemented using a dedicated VLAN ID for all trunk ports, setting user ports to non-TRUNKING, deployed port security when possible for user ports.
• Migration from 2500 series to 2600 series Routers.
• Configuration & maintenance of Cisco2600 series routers wif OSPF protocols.
• 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.
• Upgrade the network by translating protocols like EIGRP to OSPF.
• Redistribution from RIP to OSPF and vice versa by implementing Hub and Spoke topology wif a Frame Relay Switch.
• Configuration & maintenance of Cisco 2900 series switches including VLANS and TRUNKING protocols.
• Experience wif various scanning & sniffing tools Wireshark.
• Monitor, evaluate & report on health of both Wide and Local Area (WAN/LAN) Networks.
• Maintenance of the whole network and troubleshooting the network issues for efficient performance.

Environment: Routers and Switches, IP Subnetting, Firewall Access List, EIGRP, OSPF, WAN, VLANs, Wireshark and Troubleshooting.