Mikhael Robertson

**** ********** *** 484-***-**** ac4r3y@r.postjobfree.com

NETWORK TECHNICIAN

Expert in Partnering IT with Telecommunication Network Strategies, Operations and Goals

10+ years of project management experience developing and integrating IT and Telecommunication networks for global manufacturers and service providers. Known for exceptional technical proficiency, timely delivery of services and having an astute understanding of business operations as it relates to networking processes. And wireless Integration

Deliver exceptional results through effective communication with internal and external teams. Strategic thinker with innovative problem-solving abilities, an outstanding performance record and team work skills. Self-directed, disciplined, flexible, confident and always ready for new projects. Ensured hardware and software upgrades/downgrades and developed user profiles to ensure excellence in client services.

MANAGEMENT AND TECHNICAL ABILITIES

Perform complex troubleshooting, backup, archival and disaster recovery services. Assist in the design, implementation and maintenance of systems, programs, hardware and software. Update computer stations and software and provided additional support for IT teams when needed. Manage technical support teams between 3 to7 employees.

Proven technical skills includes: Implementation of Global Telephone Network Systems, Ericsson Cellular Mobile Systems (8800), AXC 10 Digital System, Siemens Expression Phone Mail (Rolm) via Pro com Plus, Siemens (9006, 4000, 3000) and Call Manager Xpression, Cisco IP Phone 7960G, T-Mobile, Nokia, Verizon and AT&T Systems, VoIP PBX, Nortel wireless Integration system, Cisco light weight access point (LWAP)

Installation and implementation of telephone network systems, digital phones, IP Phones, audiovisual telephones and wireless cell sites. Responsible for voice engineering services.wirless integration

Hardware: Nortel Wireless Circuit, Data Link Analyzer, DSU & CSU Equipment, Channel Bank (750 & 850)

Software: Access Node Express (ANX), Windows 2000/2003, XP, Vista, Microsoft Products (Word, Excel, telephone systems, PowerPoint, Access, Outlook), Unix, ACD, Window 7, THIN Client,LWAP,

Terminal Servers and Routers: Cisco Systems (2600, 5500 1700, 1720, 3500, 7500, 3500, 2885)

Network Switches: (PSTN Trucking, Trunk Group, CSM, GSC, MSC, MSS, HLR, SGSN, GGSN, TSU, TDMA, T1, T3, ISDN,, DSL, DS3, DSO, DNS 500, Media Network, Telecoms, VoIP).

Switches: Cisco Switches (6500), Siemens Hi Path (4000, 3000, 9600), Manager (E.V.4.0, V.20 PBX), DS (250, 500), DNS (500), Lucent 500 (SM, CM, AM Maintenance), PSTN, Global System Mobile, Switch Translation Recent Change, Eriksson Switch, Eriksson RNOC, GSM &TDMA platforms, Cisco VoIP (7960, 7960G), BSC, APC and SPG commands; THIN Client,

Configuration of Testing Equipment: (T-Berd, Sidekick, 850 MHz, 1900 MHz, LMU, PH Power working

wave, Data Link Analyzer, Cisco Analog 186 & 188, Eriksson BTS, TBC Test 1, Hekiman Tester T01, DSX Panel, VoIP, Telephone Adaptors)

Implement Templates, TBC Test 1, Line Trunk Maintenance, CM Hardware, SM Hardware, e911 Project, 100.120.ACE, DID Loop Start Line Cisco, Light weight access point RDK set-top boxes add code inventory activation, test deliver set top boxes to various cpu,

PROFESSIONAL EXPERIENCE

Techforce /Maicom llC

Data technician

Phila Pa

1/2018

Short term assignment for Comcast data center in Philadelphia job description install 38 router, sever and 2 juipter switch to network run fiber & cat 5 cable and configuration & testing network IP address to each router adding hard drive . Rack & sack working install MPO cable and fiber side test equipment Fluke / dsx for fiber and cat 6 cable,

Verigent /Direct line co.

Network Technician

New castle Delaware

10/2017-12/2017

Job Description: working for Direct line company on contract assignment as Construction installer for 6/8 week building network system from ground up new construction build .building rack and cable overhead rack for data &voice line pulling /terminating cat6 cable needed testing and trouble-shooting phone line working with fusion splicing and fiber, in commercial environment Building Racks, Installing projectors, screens, etc - Pulling cable, installing connectors, mounting/hanging equipment, and metal fabrication - Installing and configuring audio systems Experience doing installations with large and small scale A/V Projects - Experience performing a multitude of various tasks in the field installation technician opportunity fabrication is the building of metal structures by cutting, bending, and assembling processes.

Randstad/JPMorgan &Chase

Date Center/ Network Technician

PHILA PA

6/2017-9/2017

responsible for the entire day to day management of state of the art data center operations throughout the United States for a multinational banking and financial services Basic Duties include Rack & Stack server and IT hardware in corporate Data Center. Install support hardware for all devices to be installed into cabinets on raised floor.. anage move, add, changes and disconnects for customer service Manage move, add, changes and disconnects for customer service tickets . Manage, update, assign Install support hardware for all devices to be installed into cabinets on raised floor. Debug basic network related and software glitches Place devices in cabinets according to instructions from internal hardware power & placement team using Aperture. Debugs basic network-related and software glitches. networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking

Installing and configuring server operating systems.

Configuring network switches.

Complete cabling and cable organization per client DCO standards

Troubleshooting and testing copper and fiber cabling.

Label all devices and cables per DCO standards.

Understand and ensure data center redundancy requirements.

Perform quality checks and submit proper paperwork

Support day to day operations.

Ensure that all Peregrine incident tickets are responded to in a timely fashion and meet MTA and MTTR goals.

Complete necessary escorts for vendors in the Data Center, communicating client policies and using best efforts to ensure such policies are followed by client’s third party suppliers. Complete necessary escorts for vendors in the Data Center, communicating client policies and using best efforts to ensure such policies are followed by client’s third party suppliers.

Ensure that timesheets, PAR and shift turnover entries are accurate and entered at the close of last work day each week.

Perform decommissioning responsibilities to include:

Removal of hardware components within the server Escalate tickets to Tier 2 engineers or management when necessary

Provide first level inbound telephone and email support for customers by troubleshooting, investigating and resolving customers' questions and issues with Momentum products and services. Debugs basic network-related and software glitches. Working with office 365, window 7,10

Removal of all network cabling into the server

Disassemble server cabinets

Prepare all components for shipment

Re-boot responsibilities to include:

Providing server reboots on a limited basis when such action is deemed necessary

KCI Telecommunication

Level 3 Telecommunication

CO Tech Specialist

Phila.Pa

1/2017 – 3/2017

Central office tech

cable and lacing cable& punch down cate 6 &7 cable using RJ45 &RJ11 jacks Install, test, and turn up equipment in the Central Office and Outside Plant Environments configuring Rack routers, switches, to allow port forwarding, remote access. This will include analysis of router traffic with wires hark or equivalent tools. Tools that were being use are wire wrap, cable test toner running fiber. networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking is the building of metal structures by cutting, bending, and assembling processes. It is a value added process that involves the creation of ... working on cable tv system

MGA /Verizon

C O Tech

Phila pa

11/2016-6/2017

DC /AC Power Tech install all DC /AC running power cable and lacing cable& punch down cate 6 &7 cable using RJ45 &RJ11 jacks Configuring and upgrade of Cisco equipment, Install Catalyst 3850 switches,(48T) Cisco 240 -M4SX-(so),M4SX –(SA),and Gigamon vue TA 10 ruining cate (6) Optical Fiber connector and 3RU /4RU panel J Front Wire DC POWER SYSTEM (taps) Compact – rear wire configuration Controller, status leds,Navigation button Audible Alarm, Trp Style Fuse Platform (Adc ) Fiber using inspection kits Microscope, barrel assembly, flare adapter patch cords adapter and inspection tip Cisco equipment, Install Catalyst 3850 switches,(48T) Cisco 240 -M4SX-(so),M4SX –(SA),and Gigamon vue TA 10 ruining cate (6) Optical Fiber connector and 3RU /4RU panel J Front Wire DC POWER SYSTEM (taps) Compact – rear wire configuration Controller, status leds,Navigation button Audible Alarm, Trp Style Fuse Platform (Adc ) Fiber using inspection kits Microscope, barrel assembly, flare adapter patch cords adapter and inspection tip lacing cable& punch down cate 6 &7 cable using RJ45 &RJ11 jacks environment Building Racks, Installing projectors, screens, etc - Pulling cable, installing connectors, mounting/hanging equipment, and metal fabrication - Installing and configuring audio systems Position - Experience doing installations with large and small scale A/V Projects - performing a multitude of various tasks in the field installation technician opportunity

Robert half/ Philadelphia Housing Author

Nortel PBX Tech

Phila pa

9/2016-10/2016

Working a short-Term Assignment contract monitor Nortel PBX System for Phila housing Authority provide access to Nortel system 100-PBX set up tandem dialing from the main office more PSTN trunks must be configured on the system. See the Networking monitor Nortel system to SRG considers all calls coming in over the VoIP trunks as remote knowledge of IP addressing and subnets. Working knowledge of portable

Have a working knowledge of portable network test equipment, such as flukes, sniffer.

Cisco Routers and switches inoice telephony and data network technologies Fundamental analytical, problem solving, and decision making skills are required. Manage move, add, changes and disconnects for customer service tickets . Manage, update, assign Escalate tickets to Tier 2 engineers or management when necessary

Provide first level inbound telephone and email support for customers by troubleshooting, investigating and resolving customers' questions and issues with Momentum products and services. networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking is the building of metal structures by cutting, bending, and assembling processes. It is a value added process that involves the creation of ... Working with office 365, window 7,10

Xerox inc / Septa

QA Manual Testing Analyst Engineer

Phila pa

2/2016- 9/2016

PRINCIPAL DUTIES AND RESPONSIBILITIES. knowledge of MS office tools suite, and basic Hardware and software testing skills.

The job is to perform installation acceptance test both in the equipment warehouse and field installations for customer transportation agency devices by following a test script to test system and device functions and keep track of results Using turnstiles/ADA gates with purchased fare media by following a test script to test system functions and keep track of results. Working with current hardware and software technologies and the proven ability to efficiently provide test analysis services for large scale complex systems. Knowledge of RF ID systems Knowledge of Share Point, JIRA, Seibel, Oracle, and Java. Knowledge HP Monitoring

Tools experience- HP Service manager as their ticketing

system. execute test cases, scripts, plans and procedures

Oversee all aspects of quality assurance including establishing metrics, applying industry best practices, and developing new tools and processes to ensure quality goals are met. Debugs basic network-related and software glitches. Working with office 365, window 7,10

NCR CORP.

Phila pa

Customer Engineer 6/2015-12/2015

Working as Contractor in the tri-states area. As Field Engineer where to provided and maintain all equipment for all Banks, Retailor and Convenient stores equipment such as ATM machine, register, printers and BNA, cash &coin acceptor printer equipment. must Maintains, analyzes, troubleshoots, and repairs computer systems, hardware and Software, computer peripherals, 100 % traveling throughout Tristate area Manage move, add, changes and disconnects for customer service tickets . Manage, update, assign

Field Engineer

CompuCom /T-Mobile /Wal-Mart/ Xerox

Central Telework level

Phial pa

2/2012-6/2015

T-Mobile Store in Tri-State Area, Philadelphia, Delaware, New Jersey

Maintains, analyzes, troubleshoots, and repairs computer systems, hardware and computer peripherals.

* Documents, maintains, upgrades or replaces hardware and software systems.

* Supports and maintains Equipment: porter system computer, (backup and Imagine HP Laptop Avaya phone, Cherry Key broad’s printers all network application and Offer remote Assistance * Trains employees, identifies, analyzes, and repairs product failures, orders and replaces parts as needed.

* Relies on instructions and pre-established guidelines to perform the functions of the job.. HP Monitoring

Tools experience- HP Service manager as their ticketing

system. And working with wireless system

.

* Primary job functions do typically require exercising independent judgment.

Wal-Mart project covering all stores in tri-states area over seeing all hardware, printers, thin client, Pharmacy computer. Xerox/Aetna working as desktop Engineer. Assist field tech in troubleshoot client equipment. Using Xerox ticket system that aloud tech to remote into client site from home office to state to state. Install software and hardware, computer, laptop, thin client I pads Avaya integration with Polycom environment configuring Rack routers, switches, to allow port forwarding, remote access. This will include analysis of router traffic with wires hark or equivalent tools. knowledge in billing ports, billing backend communication tools Manage move, add, changes and disconnects for customer service tickets . Manage, update, assign Escalate tickets to Tier 2 engineers or management when necessary Provide first level inbound telephone and email support for customers by troubleshooting, investigating and resolving customers' questions and issues with Momentum products and services. Debugs basic network-related and software glitches. networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking is the building of metal structures by cutting, bending, and assembling processes. It is a value added process that involves the creation of ...

Working with office 365, window 7,10 working on cable tv, antenna

IMP Engineer

Samsung /Sprint (short term contactor)

Milwaukee Wisconsin. 4/13-6/13

. Working as Field Engineer where to provided and maintain all cell site equipment. As af lead tech on the Sprint /Samsung Project. Providing hand on experience in diagnosis and troubleshoot of such. switch equipment as Cisco ASR901, ALU (Alcatel Lucent and the legacy BTS Carrier, LMU, T1 CABLE FIBE CABLE. Field Tech must have Knowledge of all location within cell cabin. When starting system upgrade of new hardware and software equipment must call back to network center to verify all equipment and T1 line with lead Engineer. Verify location of old Equipment that sit in cell cabin here are step must be taking to complete upgrade project underneath the first DU shelf, and the IP aggregator router for all the cabinet (Radio Access / Backhaul) components. The ASR901 is part of. Cisco’s RAN Backhaul series that is making a physical break in the demark cabling to have the T1 from the carriers NIU / Smart Jack go to

.

the ASR901 Input side and the legacy BTS existing Cabling to Legacy BTS Carrier T1 from Smart Jack

. ALU (Alcatel Lucent) BTS T1 migration, using the existing 66 Block demark to extend the serving T1 (IN), and (RTN) pass-through back to the legacy BTS. Wireless system

Field Technician

Telecom-prime/AT&T

Phila pa

3-13-5/13

Cell site in and out doors

.Provided network support for new installation and system conversion projects. Staged and setup new Siad cards identify LMU, circuits telecommunication resources (i.e., data and voice .circuits, SIAD, T-1 circuit LMU switch for cell site in tri-state area, doing head to head testing. Migration of ALU_GSM O E Migration Avaya integration with Polycom environment - Mobile devices technology & integration - Advantage responsible to debug billing issues, Package issues and isolate set-top boxes vs billing issues. Wireless system environment Building Racks, Installing projectors, screens, etc - Pulling cable, installing connectors, mounting/hanging equipment, and metal fabrication - Installing and configuring audio systems Position - Experience doing installations with large and small scale A/V Projects - Experience performing a multitude of various tasks in the field installation technician opportunity. networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking

Service Desk Analyst II

Information Service Div.

Phila pa

1/13 -4/13

Hospital of the University of Pennsylvania

e

.As a Help Desk Analyst Level II, Experienced first point of contact for Penn Medicine in providing front-line diagnosis and support for all Information Services problems and/or requests for service. Processes customer requests via phone, Intranet and e-mail with appropriate customer interaction skills.

• Follows documented procedures and processes. Executes key phases of resolution workflow including problem receipt, triage, resolution and closure (when possible), and problem referral to the designated resolver group. Provides thorough documentation of all reported issues within the Help Desk tracking system. Have Remedy ticket system experience, part-time work weekend only Avaya integration with Polycom environment - Mobile devices technology & integration Manage move, add, changes and disconnects for customer service tickets . Manage, update, assign resolving customers' questions and issues with Momentum products and services. Debugs basic network-related and software glitches. networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking

Network Technical Analyst

DEC2012 to Mar/2013

CompuCon IT workforce Solution

Work sites : CIGNA Inc.

.Provided network support for new installation and system conversion projects. Staged and setup new computers, routers, servers, telecommunication resources Supported training initiatives for end-users using MS Office Products. Troubleshoot, diagnosed and solved technical matters related to security functions, design, testing, configuration and

.Tested network. Window 7 Deployment and Post Deployment. Network Support Technician after Migration is complete walking around answer question and make sure all program are working correct. Microsoft Lync integration with telephony environment

- Recent experience in Cisco Telephony 5 years

- Avaya integration with Polycom environment - Advantage

- Mobile devices technology & integration - Manage move, add, changes and disconnects for customer service tickets . Manage, update, assign resolving customers' questions and issues with Momentum products and services advantage wireless system . networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking

Migration Technician April 2012 to Sept.2012

Altos IT Solution, Philadelphia, Pennsylvania

(Work sites: Towers Watson and Datwyler)

1 Collaborate with multidisciplinary management and technical teams from inception to completion of global system integration.

Ensured the migration of new network support systems including installation, testing, integrated system backup and support.

2 Provided network support for new installation and system conversion projects. Staged and setup new computers, routers, servers, telecommunication resources (i.e., data and voice circuits, switches, routers and PBX equipment) and technical equipment (i.e., computers, printers, copiers and video).

1 Supported training initiatives for end-users using MS Office Products. Troubleshoot, diagnosed and solved technical matters related to security functions, design, testing, configuration and tested network equipment. Wireless integration. Installing of Cisco Light Weight Access Point for setup and path authentication data traffic voice and video responsible to debug billing issues, Package issues and isolate set-top boxes vs billing issues. responsible for configuring Rack routers, switches, to allow port forwarding, remote access. This will include analysis of router traffic with wire shark or equivalent tools. Manage move, add, changes and disconnects for customer service tickets . Manage, update, assign working on wireless system resolving customers' questions and issues with Momentum products and services. Debugs basic network-related and software glitches. networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking

Network Analyst November 2010 to March 2012

Renaissance CDC, Philadelphia, Pennsylvania

1 Provided technical support for end-users to ensure effective operation of all telecommunication and computer network systems and peripheral devices. Upgraded, installed, troubleshoot and configured hardware and software.

2 Responsible for managing installation of Window 7, Office 2010 and upgraded the business telephonic system. Monitored day-to-day maintenance of business equipment and software. Wireless integration tunnel mechanism for data traffic and securely support voice data ap[plication and video Manage move, add, changes and disconnects for customer service tickets . Manage, update, assign environment Building Racks, Installing projectors, screens, etc - Pulling cable, installing connectors, mounting/hanging equipment, and metal fabrication - Installing and configuring audio systems installations with large and small scale A/V Projects - Experience performing a multitude of various tasks in the field installation technician opportunity Debugs basic network-related and software glitches. networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking

Telecom Technician December 2007 to October 2010

SAP Corporation, Newtown Square, Pennsylvania

Results: Successfully managed installation and implementation projects of new telephonic systems at major Fortune 500 worksites

1 Responsible for providing the design, installation, configuration, distribution, monitoring, and maintenance of IT and telecommunication hardware and software. Performed head-to-head testing with facility engineers.

2 Collaborate with IT and Network teams to insure quality and timely delivery of user services. Evaluate, troubleshoot and resolve fiber optic, VoIP, PBX, IP, and Co Axe network issues for global worksites.

3 Managed the construction and monitoring of worksites. Identified, diagnosed, troubleshoot and resolved complex wireless network connectivity matters. Handle voice mail engineering with Nortel Meridian PDX networks including move, add and change extensions. Coordinate with the quality assurance and IT teams on issues and outages. Wireless Intergration system. Installaltion of Cisco wireless systems throughout the complex of bldg., to monitor data traffic voice support and video in all meeting and conference rooms working with wireless system Manage move, add, changes and disconnects for customer service tickets . Manage, update, assign and close Tier 1 service tickets. Debugs basic network-related and software glitches. networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking

Network Technician/Lead Engineer September 2006 to May 2007

Chinook Wireless, Great Falls, Montana (NOC) 1/2007 - 5/2007

TechniSource, Frisco, Texas 6/2007 – 10/2007

Cingular/AT&T Wireless, King of Prussia, Pennsylvania (TAG Group) 9/2006 – 1/2007

Results: Led the configuration of 120 new global systems for digital and mobile communications company.

1 Managed technical support team. Responsible for the configuration, testing, upgrade and maintenance of Cisco routers VPN, PBX, IP Phone, Wireless Access Points, Windows Server 2000/2003 and XP activity services.

2 Managed the construction of worksites and implementation of e911 systems, monitored and analyzed call-in traffic.

3 Identified, diagnosed, troubleshoot and resolved complex wireless network connectivity matter related to cell sites. Coordinate with the quality assurance and IT teams on issues and outages. Ran wires and cables between internal/external components systems. Test circuits, upgraded equipment and components of malfunctioning wireless communications equipment, wireless Integration, used test meters, circuit diagrams, and other hand tools. Cisco lwap systems monitor data traffic securely support voice video, working with wireless system Manage move, add, changes and disconnects for customer service tickets. Manage, update, assign and close Tier 1 service tickets. Debugs basic network-related and software glitches. networking, storage, computes and voice/multi-media technologies• Knowledge of Windows and UNIX operating systems and networking.

Network Installer April 2006 to September 2006

Subway Company, Houston, Texas (via Tex USA)

1.1 Provided quality technical support in the installation, testing and monitoring of wireless alarm systems, IP Phones, computer equipment, ATM machines, fiber optic wires and cable network. wireless integration Network experience with routers, switches, Packet capture and analysis, port forwarding, private vlan configs, tcp IP protocols.

2.Full hands on experience with Windows, Linux.

Data Repair Analyst December 2004 to March 2006

Broadview Network, Horsham, Pennsylvania

Results: Developed exceptional project management by improving timely delivery of network services

2 Accountable for the timely resolution of all aspects of connectivity problems associated with computer and digital telephone systems, computers, dial-up, DSL services, T1, VoIP services wireless Integration

3 Coordinated network repair and dispatch services, configured user equipment, and determine root-cause of technical problems associated with MCI, Verizon, ATT and Clec Lap network.

4 Responsible for moving, adding and changing extensions. configuring Rack routers, switches, to allow port forwarding, remote access. This will include analysis of router traffic with wireshark or equivalent tools. billing issues, Package issues and isolate set-top boxes vs billing issues. test and deliver set-top boxes to various CPE team members.

Working on wireless system

Field Engineer/Network Specialist April 2001 to November 2004

Mikhael Tech Service, Lansdowne, Pennsylvania 9/2003 to 10/2004

Cingular Wireless, Inc., Norristown, Pennsylvania 3/2000 to 8/2003

ATX, Inc., Philadelphia, Pennsylvania (via Corecom Services) 5/2001 to 2/2002

Results: Worked with numerous networks and IT vendors to ensure optimization in technical solutions

4 Responsible for providing the design, installation, configuration, distribution, monitoring, and maintenance of IT and telecommunication hardware and software.

5 Ran wires and cables between internal/external components systems. Test circuits, upgraded equipment and components of malfunctioning wireless communications equipment, used test meters, circuit diagrams, and other hand tools. Performed head-to-head testing with facility engineers. wireless integration

EDUCATION

2013 Associate Degree Candidate - IT Computer Network Systems

ITT Technical Institute, Philadelphia, PA

Applied Engineering Technology

Drexel University, Philadelphia, Pennsylvania (2004 – 2005)

Computer Network Technology Certification

Katharine Gibbs School, Norristown, Pennsylvania (2003)

Computer Marketing

Saint Joseph University, Philadelphia, Pennsylvania (1996-1998)

CERTIFICATIONS

Lucent Technology Multimedia Training

System Fundamentals

Line and Trunk Maintenance

AM Maintenance

Switch Translation Recent Change

Global System Mobile (GSM)

Cellular System Mobile (CSM)

Advanced: Mobile Switch (ECP) Eriksson and Nokia Switch

AXC 10 Digital System

SS7 Signaling

Hekiman Tester T-1

Data Link Analyzer (DLA)

Adtran Change Banks

Window 2000, Server and Window XP

Remedy Electronic

Circuit Acceptance T1

DS3, CSU, ISDN, Line

Northern Telecom’s DNS 250 & 500

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