Mariela Rojas

**** **** ***** ****

Bradenton FL 34203

941-***-****

tnntny@r.postjobfree.com

Education

**** **** *******

Cisco Certified Networking Associate

**** ***** ******* ********ty Caracas

Telecommunications Specialist

1984 American River College Sacramento, CA

Electronic Digital and Communications Technology

Knowledge

Microwave, VOIP. H323, SIP protocols Standard SS7. QOS. LAN/WAN. Routing, Switching, Access List. Packet filtering. Routing Protocols RIPV2, IGRP, EIGRP, OSPF. VLANS. Communications Protocols Frame Relay, ATM. Fiber Optic. SDH. Fixed and Mobil Telephony, Standards GSM, CDMA. Satellite Networks

Experience

2008-2011 NETUNO C.A. Caracas

Operations Supervisor of the Microwave SDH STM-1 network arquitecture add-drop multiplexer (ADM) and digital cross-connect system (DCS or DXC) with a configuration 1+1 over a Radio Network. Directed the day to day operations of the team Network Engineers who support, troubleshoot and maintain the Microwave Network Infrastructure for VOIP and data transmission. Acted as an escalation path for issues that require assistance.

2008-2008 New Global Telecom

NOC Manager worked on Project Management tasks and requests, monitoring Tests, troubleshoot and analyze system facilities for VOIP and data transmission over the Microwave SDH STM-1 network with a configuration 1+1 Radio Network infrastructure integrated with Cisco equipment. Acted as an escalation path for issues that require assistance. Responsible for providing senior level support.

2005-2007 Multiphone Venezuela S.A. Caracas

As a Traffic and Interconnection Analyst: worked on Project Development for Signaling SS7 protocol on Quad Redundant Mode, configuration on ITPs and SSP with Telco MOVISTAR. Migration R2 to SS7 with Telco MOVISTAR. Troubleshooting MTP1,MTP2. QOS. Initiated Project development for SS7 with Telco CANTV.

NOC TIER III Troubleshooted, Supported Interconnections with Telco CANTV, MOVISTAR and NETUNO on Lucent, Axe, Siemens switches, Inbound/Outbound, Wholesale calls. Cisco IOS upgrades AS5300, AS5400, SW, R02600 and installation. 802.1q, ISL, IP Tunneling, Access Control Lists (ACLs), and Cisco IOS. Traffic balancing. Configurated POTS and VOICE dial-peers, voice ports, number-expansion, E1s controllers.

NOC TIER II front line supported for all customer and provider interaction. Troubleshooting interconnections with Telcos. Monitor quality alarms, ASR, recorded problems, opened tickets and took actions working with third parties (voice carriers and ISP s), tested calls for Wholesale/Retail prepaid, postpaid accounts systems. Escalated and communicated issues to management and other departments.

.

2000 - 2000

RM Grupo Corporativo – CNAST Caracas

Installation Project Lieder

Installation and Upgrades on PCs.

1992-1996 Corposistemas TEC Caracas

Support Technician

Network designer for LAN / WAN, protocols TCP/IP; Ethernet topology. Software and hardware support. PC maintenance. Structured cabling.

1987-1992 Intertron S.A. Caracas

Technical Service Chief

Supervision and logistic support to 15 Customer Service Departments in Venezuela. Responsible of Caracas Customer Service Department with a crew of 6 technicians.

Product Chief

Responsible of the car stereo and home sound equipment production lines. Technical personnel training.

Investigation and Development Technician

Design and develop electronics circuits for production lines. Program and support for In circuit Tester OKANO.

1985-1987 Western Geophysical de Venezuela Caracas

Junior Analyst

Pre-processing of Seismic data. De-multiplexing, editing, trace sum for Petroleum exploration.

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1984-1985 Avantek Inc (Telecommunications) Milpitas, CA

Test Technician I

Test specifications, alignment of voltage attenuators, current limiters, QOS. Customer Service.

Volunteering

2011-

Community Coalition on Homelessness Bradenton, FL

2011-

Latin Chamber of Commerce Gulf Coast Bradenton, FL

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