IP Telephony Specialist
Solutions-oriented IP Telephony Specialist with notable success deploying and maintaining corporate IP Telephony systems while participating in planning and design of IPT solutions in direct support of business objectives.
Demonstrated capacity to maintain Cisco enterprise production Call Manager systems.
Demonstrated capacity to plan and implement Call Manager EFT programs on enterprise production systems.
Experience in designing Call Manager systems to provide enhanced video conference features with Cisco Telepresence.
Ability to maintain Cisco production Call Manager systems to support Call Center applications.
Experience in deploying and maintaining Cisco Unity Connection messaging systems to support enterprise Voice Mail service.
Core Competencies: Converged Campus Network Design and Implementation using Cisco Devices; Cisco Unified Communications Manager and Cisco Unity Connection Voice Messaging System Design and Deployment; Cisco Unified Communications Manager Express and Cisco Unity Express.
* Platforms: Cisco IOS/IOS XE, Linux (RHEL, CentOS), Microsoft Windows® OS Server 2012/Server 2016/10.
* Networking: TCP/IP, Cisco Routers (2500, 2600, 3600, 3745, 3845, 7206, 3945, 4451, ASR), Cisco Catalyst Switches (2900, 3524, 3550, 3750, 6500), Cisco PIX firewall.
* Languages: UNIX Shell Scripting, HTML, Perl, Python
Cisco Systems, Inc., San Jose, California 2011 – Present
Member of Technical Staff, Information Technology
Managed global enterprise Unified Communication systems and Contact Center Infrastructure support
Served as SAFe Product Owner for Voice Operations scrum team – defined and accepted stories and managed Team Backlog, led the efforts in transforming IT voice operations under Agile framework.
ILS/GDPR call routing migration – migrated more than 20 sites in US to +E164 number dial plan.
UCCE Infrastructure (CVP, CUIC, MediaSense) 11.5 upgrade.
UCCE infrastructure monitoring and alerting setup.
DX video endpoints deployment and EX video endpoints CUCM migration.
Migrated H323 gatekeepers to SME to enable end-to-end SIP voice and video deployment.
Cisco Systems, Inc., San Jose, California 2006 – 2011
Voice Engineer, Global IPT Operations, Information Technology
Managed global enterprise Unified Communication systems.
Deployed and supported Cisco TelePresence conferencing solution with CTS, CTMS and CTS-MAN.
Migrated enterprise Windows CallManager systems to Linux-based appliance Unified Communications Manager systems.
Migrated enterprise Unity voice messaging systems to Unity Connection Voicemail systems.
Virtualized enterprise Unified Communications systems with UCS.
Deployed CUBEs to enable WebEx voice conferencing solution.
Cisco Systems, Inc., San Jose, California 2002 – 2006
Voice Engineer, San Jose IPT Operations, Information Technology
Managed enterprise IP Telephony communication systems.
Call Manager SeaDragon design and implementation on a Cisco San Jose production cluster for Cisco Telepresence video conference deployment.
Call Manager SeaDragon and Parche EFT planning and implementation on Cisco San Jose production cluster.
Cisco San Jose production Call Manager upgrade from CCM 3.1 through CCM 3.2, CCM 3.3 to CCM 4.1(3)
Cisco San Jose Voicemail migration from Octel to Cisco Unity messaging.
Cisco Systems, Inc., San Jose, California 2000 – 2002
Network Engineer, Information Technology
Managed enterprise network infrastructure for data communications and migrated it to converged network infrastructure to support voice and video communications.
Cisco San Jose LAN Retrofit to support migration to converged network infrastructure.
Campus network infrastructure design, implementation and support.
Data Center Network infrastructure design, implementation and support.
Cisco Systems, Inc., San Jose, California 1999 – 2000
System Administrator, Engineering Computer Services, Information Technology
TransMedia Communications acquisition support
Migrated TransMedia into Cisco IT and Engineering infrastructure.
TransMedia Communications, Inc., San Jose, California 1998 – 1999
Managed company information systems and engineering development systems in a start-up company environment.
IS support of engineering Unix (Solaris) development networked systems, software tools installation and maintenance, NIS+ database maintenance, etc.
Designed, implemented and maintained company network infrastructure to support engineering development and data communications.
Deployed and maintained company email system with MS Exchange.
Education and Credentials
BS Degree in Mechanical Engineering
National Taiwan University – Taipei, Taiwan
MS and PhD Degrees in Electrical Engineering
Virginia Polytechnic Institute and State University – Blacksburg, Virginia
Professional Training and Certifications
CCNA – Cisco Certified Network Associate
CCDA – Cisco Certified Design Associate
CCNP – Cisco Certified Network Professional
IP Telephony Support Specialist
IP Telephony Operations Specialist
Certified SAFe 4 Practitioner