Lal Mohammad

Experience

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  Robi Axiata Limited

  Nov 2006 - Mar 2013

  • Installation and configuration of Cisco routers, switches, access point and security appliances (Cisco ASA, Paloalto firewall).• Configuration and troubleshooting of routing protocols (EIGRP, OSPF, BGP).• Configuration and troubleshooting of L2 switching protocols (802.1q, STP, RSTP, VTP), port security, VLAN, ether channels (PAgP, LACP).• Management of access control list (ACL), NAT configuration, applying and enforcing security measures and policies on Router and firewall.• Troubleshoot and restore network connectivity issue between networks nodes.• Configuring domain controller, user account, user group, security policy, permission and management of active directory server.• Resolving network issues; and escalate critical incidents to service vendor in case of necessity.• Performing day-to-day troubleshooting and diagnosing of LAN/WAN network errors, failures, upgrades software and network hardware as necessary.• Developing and maintaining standard operating procedures (SOP) for routine maintenance, system configuration, network changes.• Analyze, assess and prepare report on system capabilities, technology requirements for new product and services implementation and up-gradation.• Collect and review network data for capacity expansion, performance measurement and optimization. • Creating and maintaining accurate and comprehensive network documentationand diagram of network infrastructure. Show less • Prepare rollout plan for BSS and Core equipment including site survey, preparing BOQ and layout verification.• Implementation and configuration of Ericsson, Huawei and NSN equipped BTS/NodeB, BSC/RNC, microwave links (Alcatel, Ericson and Huawei).• Integration, commissioning and troubleshooting of BTS/NodeB/BSC/RNC and transmission equipment.• BTS/NodeB re-homing from one BSC/RNC to another, BTS modernization, swapping.• Traffic monitoring & analysis for the cells and accordingly recommending the changes to meet the capacity and coverage requirements of the network.• Cluster wise/ cell wise parameter (Both Physical & Logical) tuning to improve KPIs based on Drive test & Statistics report analysis.• Distributed antenna system (DAS) design for indoor building solution (IBS), power diagram in details with dB loss and EIRP, walk test, optimization.• Enforcing practices of HSSE guidelines to local service providers and equipment vendors by regular site audit.• Ensure effective communication is established among various parties to resolve project issues by arranging project meeting involving related stakeholders, updating project progress dashboard to steering committee on regular basis for smooth implementation of the project.• Customer complain management (based on complain ticket) as per SLA through CMS.• Conduct pre-acceptance test of BTS, BSC and transmission links to hand over to operation and maintenance department.• Experience dealing with vendor, vendor performance evaluation, preparing purchase order and procurement, invoice and payment.• Preparing and maintaining project documents including project processes, communication plan, resource plan, SOP, process flow, cost analysis, project evaluation and project end report. Show less

  • Engineer, IP Network

    Jul 2011 - Mar 2013

  • Engineer, Access Network

    Nov 2006 - Jun 2011
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  South Dakota State University

  Aug 2013 - Aug 2015

  Research Assistant

  • Fabricate and characterize single junction and tandemnano-structured organic solar cells.• Establish light biasing system to measure quantum efficiency of tandem organic solar cells.• Characterize solar cells with AFM and XRD to correlate morphology and crystallinity based optoelectronic properties of solar cells.• Characterize current-voltage (I-V) characteristics of solar cells with parameter analyzer (4155C) and Keithley (2400 source measure unit) Instruments.• Study charge transport and recombination dynamics by transient and Photo-CELIV measurements integrated with N2 dye laser system.• Deposit metal and metal oxide thin films using thermal evaporation and sputtering method at high vacuum (10-7 -10-8 torr) Show less

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  Queen's University

  Sept 2016 - Dec 2016

  Research Associate

  • Understanding call flow/signaling flow in LTE and SDN based LTE infrastructure.• Understanding of SDN architecture, OpenFlow, flowtable, OF switch, OF controller, different interfaces.• Review and quantify the impact of SDN/NFV on business capacity planning.• Analyze and quantify the impact of SDN/NFV on CapEx/OpEx savings perspective.• Review and identify the QoS parameters of legacy and SDN based EPC network.• Analyze and quantify the impact of SDN/NFV on QoS performance of EPC network. Show less

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  Western University

  Jan 2017 - Jul 2017

  Teaching Assistant

  • MS Access database design, query design, access form and report design, SQL query statement.• XML design, XML data and schema design, Xquery and Xpath to retrieve XML data.

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  Bell Technical Solutions

  Aug 2017 - Oct 2017

  Field Service Engineer

  • Provide field technical service and support at Bell mobility services customer sites by installing, commissioning and testing of network hardware with maintaining Bell’s service standard.• Troubleshoot and repair of network connectivity and other issues using toner, optical power meter, copper meter and other tools.• Provisioning of network ports, pigtails, binding post and other network data to update in database.• Educate/train customers on Bell products and services.

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  Evertz Microsystems

  Nov 2017 - Jun 2019

  Field Service Engineer

  • Engage in deployment, commissioning and documentation of small and large scale IP and baseband networks for broadcast infrastructures.• Deployment, configuration and management of SNMP based network control and monitoring system.• Deployment and commissioning of switches, routers, master clock, multi-viewing system, software defined video networking (SDVN) system, routing and switching control panel.• Respond and provide technical direction to customers regarding operational issues, firmware upgrades and general maintenance.• Troubleshoot and diagnose customer’s case through research and replication of the problem to find the root cause.• Provide solutions to customer using proper technical terms in a timely manner.• Interact with other departments to resolve customer’s issues, provide customer’s feature request to design team to make changes in design.• Installed products at customer sites and educate/train customers on products and services.• Configure various networking protocols for unicast and multicast delivery of audio and video in broadcast network.• Install and configure unified centralized control system for baseband and IP based broadcast network.• Configure server backup, restore point, retrieve logs file for troubleshooting. Show less

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  Evertz Microsystems Ltd.

  Jul 2019 - now

  Sr. EvTOC Engineer

  • Act as lead support engineer for SLA’d customers for their broadcast infrastructures (control room, studios, audio/video switcher, encoding/decoding, audio/video transmission, audio/video processing and conversion) issues. • Provide timely support for on-air impacting critical issues at customer’s broadcast infrastructure for SDI and IP system, video compression and transmissionissues.• Research and replicate reported issues in lab system, work for resolution of issues, solution testing and verification.• Functional testing of individual products within broadcast workflows, regression testing of firmware, patches before applying to customer’s system.• Interface with different teams to quickly identify and restore priority issues, partners with R&D to assure comprehensive test coverage, understand design intent and product improvement.• Respond and provide technical directions regarding operational issues, firmware upgrades and general maintenance.• Follow standard operating procedures and documentation to support daily activities.• Perform health check and maintenance of full broadcast facility, audio/video processing, transport chain.• Perform regular updates at customer’s media network platforms with latest firmware and features.• Configure monitoring system for magnum health or other products status using Insite and configure email notification.• Prioritize and work effectively across different projects, simultaneous issues. Show less