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Check out Grandstream specialists with the skills you need for your next job.
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  2. Development & IT Talent
  3. Network Administrators
  4. (Current) Grandstream Specialists
  • $55 hourly

    • 4.9/5
    • (136 jobs)
    Cisco Certified CCNP - Enterprise, CCNP - Security, and CCNA Cyber Ops and Experienced IT, Network, Security Specialist skilled & I have more than ten years of experience with following, - Assist in planning, design, documentation, and implementation of Network, Security, and System infrastructure - Hands-on experience with configuration administration of Cisco, Meraki, HP, Dell, Ubiquiti, routers, switches, and network devices and Cisco ASA, Fortinet, SonicWall, PaloAlto, pfSense, OPNsense firewall devices - TCP/IP, Routing and Switching Protocols RIP, EIGRP, OSPF, BGP, GLBP VRRP, HSRP, VLANS, STP, VTP, ACL, Security features - IP Sec site to site and remote access VPN on Ubiquiti Unifi, Fortigate, SonicWall, PaloAlto, pfSense, OPNsense firewalls, AWS, Azure, GCP cloud services, and Strongswan, Openswan and Libreswan as well - Familiar with security platforms such as IPS, IDS, Web Security Appliance, Email Security Appliance, and Cisco ISE - Familiar with VOIP platforms such as FreePBX, Grandstrem, etc
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    Cisco IOS
    Cisco Router
    Ubiquiti
    PfSense
    Cisco Certified Network Professional
    VPN
    Wireless Network Implementation
    Firewall
    Palo Alto Firewalls
    Network Monitoring
    Network Security
    Cisco ASA
    Fortinet
    DNS
  • $25 hourly

    • 4.7/5
    • (29 jobs)
    • 3CX & Twilio Certified & Grandstream Device Expert • Best-Quality Work • 15+ Years of Robust Experience • Sincerity and Dedication. I selectively bid only for job which I can do very well.. I never try to grab each and every job. And I am a VoIP developer with 15+ years experience in communication network for all sized businesses. As a Top Rated Plus developer with a decade of experience, I have extensive experience with CPaaS like Twilio, Plivo, Telnyx, Vonage, Bandwidth, MessageBird, Sinch, Signal wire, Agora, Dolby.io, AWS Chime, AWS Connect, Contact me for Voice/Video Communication Development, Voice/Chat/SMS BOT, Cloud PBX/Call Center Development, SMS Solutions, CRM integration, etc. Experienced in 3CX, Twilio, Grandstream Devices, Kamailio, Dialogflow CX, OpenSIPs, Cisco Devices, VICIDIAL, FreePBX, API, PHP, HTML and CSS 3, PHP, jQuery, WordpPess and SEO I am 3CX and Grandstream and Twilio certified VoIP developer. Regular communication regarding the project is really important to me, so let’s keep in touch !!
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    amoCRM
    GoDaddy
    Twilio API
    Call Center Software
    VoIP PBX
    VoIP Administration
    OpenSIPS
    Kamailio
    VoIP Software
    FreePBX
    Bitrix24
    Dialogflow
    Twilio
    3CX
  • $15 hourly

    • 4.9/5
    • (38 jobs)
    I work in IT business for a 18 years now, and I am specialist for access control systems and Recording of working hours software. For last 8 years I work as VoIP administrator in my company and I help to our client in creating, starting and managing VoIP systems in their companies. I have good experience in MS Access and MS SQL databases and know how to create various queries as needed. Also i have some experience in creating and administering wireless systems both non professional and professional environment. I worked in Service dept in my company so I have experience in PC hardware and software and windows operating systems. I am speaking English fluently, and can do general and technical translation from English to Serbian (or Croatian and Bosnian) and vice versa. Have major experience in converting pdf files to MS word and excel. I am also good typist and could do good transcription from video or audio. I believe I am good in web research because I have done couple of this researches for my company especially in getting peoples contacts and e-mails from the web for purposes of organizing events for our clients. I already have some jobs completed here on Upwork with focus on data research and data mining on internet. (jobs shown in my portfolio) Also I have some minor experience in PACS and work on some PACS servers and connecting PACS machines with various databases.
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    FreePBX
    3CX
    VoIP
    Session Initiation Protocol
    Asterisk
    PDF Conversion
    VoIP Administration
    VoIP Software
    Wireless Network Implementation
    Network Planning
    Windows 7 Administration
    Network Design
    Serbian
    Microsoft Word
    Microsoft Excel
  • $75 hourly

    • 5.0/5
    • (62 jobs)
    I have over a decade of VoIP networking experience deploying and configuring iPBX's (3CX, ShoreTel), Skype for Business/Lync, Session Border Controllers and Gateways (AudioCodes, Sonus, Edgewater). My experience ranges from complete project management to individual SBC/GW implementations. My core focus has been VoIP connectivity and the applications that accompany it like Call Recording (Cloud & On-Premise), Office 365 and Exchange. The vast majority of my time has been spent implementing on-premise systems (60%) and hosted systems (40%) for small and medium businesses. I have interfaced with Tier-1 Carriers, (ATT, Verizon, Centurylink, Level(3)) all the way down to pure SIP based service providers such as (G12, Flowroute, PureIP).
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    Phone Communication
    IT Management
    VoIP Administration
    3CX
    Session Initiation Protocol
    Skype For Business
    Network Engineering
    Network Planning
    Network Design
    Network Monitoring
  • $30 hourly

    • 5.0/5
    • (14 jobs)
    More than ten years experience with multi vendor VoIP solutions and classic PBX. Hobby welder, hobby CNC machinist.
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    Linux System Administration
    Asterisk
    3CX
    OpenVPN
    SQL Programming
    Docker Compose
    SQL
    Docker
    VoIP Software
    VoIP
    Django Stack
    Python Script
    Cisco
    Bash
    Python
  • $25 hourly

    • 4.6/5
    • (45 jobs)
    I am a Network Engineer with experience of more than 8 years. I have good skills in both system administration/integration and software engineering. I have had a good experience with Linux system administration, VoIP and SS7/SIGTRAN solutions and some cloud computing using docker. I have a very good experience with C/C++, JAVA, C#, node.js, socket.io, php programming languages.
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    SMS Gateway
    SMS
    API
    Linux System Administration
    VoIP Administration
    HTML
    Kannel
    PHP
    Asterisk
    SMPP
    JavaScript
    Linux
    Docker
    C++
    C
  • $80 hourly

    • 5.0/5
    • (381 jobs)
    Highly skilled Network and System Administrator with 15 years of experience in planning, designing, and implementing complex network infrastructures and systems. Proficient in a variety of networking technologies and operating systems, and possesses in-depth knowledge of network security, routing, and switching protocols. Proven track record of delivering high-quality network solutions and maintaining systems within budget and timelines. Skills: * Systems administration: Linux (RedHat, Debian, Ubuntu), Windows, macOS * Network administration: VLAN, VPN, Wireless networks, Network equipment management (Mikrotik, Sonicwall, Ubiquiti, Meraki, Cisco, Draytek), Deep understanding of network architecture * Routing technologies: BGP, OSPF, EIGRP, IS-IS, RIP, Static routing * AWS, Digital Ocean, Hetzner * OpenVPN, Wireguard, IPsec * Active Directory (from 2008 to 2016 functional level) * Virtualization: Hyper-v, VMWARE, Xen-Server * Kerio Winroute, PFSense, IPFire * Remote Desktop Services (formerly Terminal Services) * Synology NAS * Virtual Desktop Infrastructure: Practical experience with XenDesktop/XenApp 5/6/7 (over 100 clients) * Data Recovery * CCTV, NVR, DVR
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    Duo Security
    Mikrotik RouterBOARD
    Ubiquiti
    OpenVPN
    Data Recovery
    ITIL
    Microsoft Server
    Virtualization
    Network Administration
    Cisco Meraki
    MikroTik RouterOS
    Amazon Web Services
  • $50 hourly

    • 4.6/5
    • (189 jobs)
    I’m a skilled IT professional with 8+ years of experience in VoIP field and I have a Bachelor in Information Technology Skills 3CX (From Version 16-18 -20 ) old Elastix as well IP Phones (Grandstream, Yealink, Cisco, Polycom and more) FreePBX, Elastix Twilo, Flowroute, Nexmo ViciDial RingCentral CRM Support Amazon Connect Microsoft Teams GrandStream PBX Five9
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    Call Center Management
    FreePBX
    Helpdesk
    VoIP Administration
    WebRTC
    Google Workspace Administration
    Linux System Administration
    System Administration
    Customer Support
  • $40 hourly

    • 5.0/5
    • (26 jobs)
    As a Senior Network Engineer with over 10 years of experience, I specialize in planning, designing, and implementing passive optical and copper networking solutions for diverse clients. My expertise spans various technologies and vendors, including Mikrotik, Ubiquiti, Cisco, Ribbon Communications and Grandstream. I possess in-depth knowledge of TCP/IP, VPN, DHCP, routing protocols, NAT, VLAN, and other essential network concepts. Additionally, I hold multiple certifications, including Mikrotik Certified Routing Engineer (MTCRE), Mikrotik Certified Network Associate (MTCNA), Ribbon Communication Metro & DWDM certifications, Grandstream Certified Specialist - UC Solution, and Certified System Installer for structural cabling. Throughout my career, I've successfully delivered high-quality network solutions tailored to meet clients' specific needs and expectations. I excel in troubleshooting network issues and implementing efficient solutions to ensure optimal network performance. I'm dedicated to fostering strong client relationships and prioritize clear communication and understanding to deliver exceptional results. Let's collaborate to achieve your network infrastructure goals effectively and efficiently.
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    Network Planning
    Computer Network
    MikroTik RouterOS
    Mikrotik RouterBOARD
    Network Administration
    MikroTik
    Virtual LAN
    Network Equipment
    Network Design
    Network Engineering
    VPN
    Ubiquiti
  • $50 hourly

    • 5.0/5
    • (161 jobs)
    With over 20 years of experience in planning, installing, configuring, and debugging VoIP systems, I am confident that I can contribute significantly to your project. I have a proven track record in setting up and maintaining VoIP systems, including Kamailio, Asterisk, FreeSWITCH, FreePBX, VOS3000, A2Billing, ASTPP, 3CX, and Kazoo. Additionally, I have extensive experience working with SMS systems like PlaySMS, Jasmin, and Kannel. I am also 3CX certified, which further assures my capability to meet your VoIP needs with efficiency and precision. Whether it's troubleshooting, configuring systems, or managing complex installations, I bring a meticulous approach to ensure the project is delivered successfully and on time. If you choose to work with me, I guarantee 100% satisfaction and a solution tailored to your specific requirements.
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    VoIP
    Asterisk
    VoIP Administration
    Twilio API
    MySQL Programming
    Session Initiation Protocol
    SMS Gateway
    Database Optimization
    Network Engineering
    FreePBX
    3CX
    Linux System Administration
    FreeSWITCH
  • $150 hourly

    • 5.0/5
    • (247 jobs)
    A Top-Rated, Expert-Vetted VoIP/Software engineer with over 20 years of experience. My experience ranges from Asterisk/FreePBX phone systems, SMS messaging, Linux operating systems, to network administration. I believe you deserve a more professional, reliable, and personalized business experience, and I bring that mindset to every project. Whether I’m developing top-secret code for Lockheed Martin, or AI telephone agents for Nomo, or creating privacy-first communications for Mecca Hosting, Inc, or designing secure, high availability Asterisk systems for TeleConnx Inc., or handling difficult troubleshooting tasks, I always commit myself to the same standard: creative, client-first solutions and efficient, high-quality work, completed in a fraction of the time. I have a passion for transforming mundane phone interactions into exciting customer experiences, and I lean on decades of experience to create solutions that others would find impossible. In short, I can make your telephone system do pretty much anything, including turning on your coffee maker in the morning. I look forward to working with you!
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    FreePBX
    MySQL
    Kamailio
    Linux System Administration
    Amazon Web Services
    VoIP Administration
    Asterisk
    API Development
    C
    VoIP Software
    LAMP Administration
    Session Initiation Protocol
    Linux
    VoIP
    Business with 10-99 Employees
  • $30 hourly

    • 4.1/5
    • (73 jobs)
    I am a Senior System Administrator and VoIP Engineer with over 7 years of expertise in deploying and managing Class 4-5 Grade VoIP Softswitch platforms such as PortaOne and VoIPSoft-Switch, as well as hosted PBX systems, including both multi-tenant and stand-alone setups. My core competencies include VoIP systems based on Asterisk (e.g., FreePBX, AsteriskNOW, Issabel, Elastix), Freeswitch (e.g., FusionPBX), Grandstream UCM, and Linux environments (CentOS 7, Ubuntu). I also have extensive experience with 3CX solution design. In addition to my VoIP skills, I have a strong background in networking, particularly with firewalls and security solutions. I am skilled in configuring and managing Fortigate, Sophos, and SonicWall firewalls to ensure secure and optimized network performance. I excel in designing complex call routing using 3CX Call Flow Designer, creating interactive IVR systems with database integrations, and managing cloud services like MS 365, Azure, and AWS. My certifications in VMware Data Center Virtualization (vSphere 6.7) and Red Hat further strengthen my capabilities in virtualization and system optimization. Throughout my career, I have led various large-scale projects, including deploying a 2000+ user mail server using Zimbra and Postfix, implementing data center virtualization, and deploying VoIP platforms using Elastix and FreePBX for banks and IT companies. I hold a Bachelor’s degree in Electronics and Telecommunication and a Master’s degree in Computer Science. I am passionate about building user-friendly, cutting-edge websites and system applications, and I continuously explore new technologies to stay ahead of industry trends, delivering robust and sustainable solutions. Thank you for considering my profile.
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    VoIP Software
    Elastix
    VoIP PBX
    3CX
    VoIP Administration
    Virtualization
    Network Engineering
    Asterisk
    FreePBX
    VMware Administration
    Zimbra Administration
    VICIDIAL
    Linux System Administration
    Microsoft Azure
    CentOS
  • $125 hourly

    • 5.0/5
    • (134 jobs)
    Experienced Network Engineer. Everything from Routing, Switching, WiFi, Designing, Troubleshooting. I started my career owning an Internet Service Provider and have worked in IT networking my entire career. I'm looking to expand my services by contracting projects for clients remotely. Currently working in with many network technologies at an expert level. Recent 2020 projects in: Cisco, Ubiquiti, Cisco Meraki, Many VOIP solutions, etc.
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    Network Planning
    PfSense
    Computer Network
    Firewall
    Internet Protocol Security
    Cisco Router
    Network Administration
    DHCP
    Network Equipment
    Virtual LAN
    VoIP
    Ubiquiti
    Network Design
    Cisco Meraki
  • $75 hourly

    • 5.0/5
    • (9 jobs)
    Full-featured IVR for financial institution. Customers may access customer account balance, change PIN, report lost card, etc. Twilio SIP trunking Google Voice Polyphone Google MySQL database integration. Asterisk developer. Business phone systems. IVRs serving the financial and insurance communities. Telephone payment systems. MySQL database integration.
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    IVR Software
    VoIP PBX
    VoIP
    Asterisk
    FreePBX
    VoIP Administration
    SQL
    Java
    PHP
    MySQL
  • $80 hourly

    • 5.0/5
    • (2 jobs)
    As an experienced IT professional with a specialization in Windows, Windows Server, Asterisk-based phone systems, printing and scanning solutions, Microsoft Office, PCI compliance, HIPAA compliance, cybersecurity, and remote tech support, I am well-equipped to handle the technological needs of small businesses. With a proven track record in managing IT infrastructure, I am adept at providing comprehensive support and solutions tailored to meet the unique requirements of each client. Whether it's setting up and maintaining Windows-based systems, optimizing Asterisk-based phone systems, or implementing efficient printing and scanning solutions, I ensure smooth operations and seamless integration. My expertise extends to ensuring compliance with industry regulations, including PCI and HIPAA. By employing robust security measures and implementing best practices, I safeguard sensitive data and protect businesses from potential threats and vulnerabilities. Additionally, I possess extensive knowledge in remote tech support, enabling me to offer swift and efficient assistance to businesses regardless of their location. Whether troubleshooting software issues, configuring network settings, or resolving connectivity problems, I excel in providing remote solutions promptly and effectively. By leveraging my skills, small businesses can benefit from a reliable and proactive IT partner who is committed to delivering exceptional services. With my expertise in Windows, Windows Server, Asterisk-based phone systems, printing and scanning, Microsoft Office, PCI compliance, HIPAA compliance, cybersecurity, and remote tech support, I am well-prepared to handle the diverse IT needs of businesses, ensuring their systems run smoothly and securely.
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    Open Source
    ChatGPT
    Azure App Service
    Remote IT Management
    Windows 11 Administration
    Cybersecurity Monitoring
    Cybersecurity Management
    Windows 10 Administration
    Windows Server
    PfSense
    FreePBX
    Asterisk
    Information Technology
    Microsoft Active Directory
    Remote Connection Support
  • $18 hourly

    • 4.2/5
    • (6 jobs)
    Asterisk expert Sip, pjsip, ael script , Meetme, confbridge, ext etc. Linux debian and ubantu expert
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    FreePBX
    Citrix
    Network Administration
    FreeSWITCH
    Linux System Administration
  • $60 hourly

    • 5.0/5
    • (12 jobs)
    Over the past 20+ years i have mastered the art of Asterisk Ninjitsu. When choosing me you can expect that job will be done quickly and perfect. Highly trained with any Asterisk distributions. PBX and non Asterisk PBX (Issabel PBX, asteriskNOW, TrixBox, Elastix, PIAF, freePBX, MirtaPBX, and 3CX) A2Billing Predictive dialers (GoAutodial and ViCidial) Multitenant PBX Thirdlane and VitalPBX and Hardware based PBX (SwitchVOX, Yeastar myPBX and Grandstream UCM). Class 4 and 5 Softswitches ( Sippysoft, Porta One, VOS3000, Voipswitch, Mediacore, Nextone) I have a solid experience in designing, installation, configuration, deployment and troubleshooting VoIP hardware and software applications. I am currently doing full time consultancy service for companies both local and abroad and already have at least a total of 600+ PBX server deployments. I don't like to do something that doesn't need to be done, so i usually prefer to use available developed components and solutions. But when something is needed and not available, as an experienced shinobi, I execute the techniques of asterisk programming and scripting. My rate maybe higher than others but i can assure you that I can deliver any work satisfaction guaranteed!
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    Session Initiation Protocol
    CentOS
    VoIP
    VoIP Administration
    Elastix
    Asterisk
    Linux System Administration
    3CX
    VoIP Software
    FreePBX
  • $40 hourly

    • 4.9/5
    • (93 jobs)
    A highly trained technical individual who has knowledge in security, infrastructure and all layers of the OSI; is able to handle clients and provide them substantial support needed; has excellent communication skills; can lead technical team in field works.Tracked and routed problems and submitted instant resolutions at the shortest time possible. Asterisk/Freepbx/Elastix/SwitchVox VOIP Server deployment and configuration in Linux. Asterisk/Freepbx/Elastix/SwitchVox deployment and Support in VOIP Provider Setup Asterisk/Freepbx/Elastix/SwitchVox CallCenter Solutions Asterisk/Freepbx/Elastix Cloud (AWS and Digital Ocean) based installation, Configuration and troubleshooting. Asterisk/Freepbx/Elastix Cloud (AWS and Digital Ocean) based ongoing Support Asterisk/Freepbx/Elastix/SwitchVox Outbound, Inbound routes SIP Carriers routing Asterisk/Freepbx/Elastix/SwitchVox IVR, Voice Mailbox Asterisk/Freepbx/Elastix/SwitchVox SIP/PRI settings Asterisk/Freepbx/Elastix/SwitchVox Call Recording Asterisk Dynamic logins Asterisk Real Time Database Customization of Asterisk based Voicemail service Deployment of different Text to Speech and Speech to text systems Mysql and Asterisk based dynamic IVR using Text to speech engines like Festival, Cepstral and IBM Watson Real time Asterisk deployment Freeswitch/Fusion Pbx Installation and Configuration Freeswitch/Fusion Pbx Sip Profiles Freeswitch/Fusion Pbx Dial plan and Gateways settings Freeswitch/Fusion Pbx Directory users and groups Kamailio Installation, Configuration and Troubleshooting Kamailio Registrat Server Kamailio SIP Proxy Server Kamailio Realtime Configurations Wazo Installation and configuration Wazo complete deployment solutions Wazo and IBM Watson Speech to Text API successfull Implementation Wazo endpoint configuration Wazo server SIP Trunks configuration Wazo server Incoming and outgoing call routing Microsoft Teams Inbound/outbound Calls Microsoft Teams IVR etc Vicidial standalone installation Vicidial Cluster installation Vicidial inbound Campaign Vicidial outbound campaign Vicidial Blended campaigns Vicidial Customizations and integration with Asterisk servers Vicidial Carriers Settings, Campaigns and Leads deployments Vicidial agent and non agent apis Vicidial Support and Troubleshooting Yeaster UC100 setup, configuration and routing. Databases: MySQL and Postgresql Programming Skills: Shell Scripting, Php, Python, JSON, XML and JavaScript Python Django web development Django and Postgresql Django and ,MySQL Django Rest Framework for API Development a).Expert knowledge of Cisco ASA5505,ASA5510,ASA5520, SonicWall NSA 2400, NSA 2600, TZ170, TZ150, TZ300 and TZ400 Configuration and Deployment of ASA(s) at British American Tobacco Company Configuration and Deployment of ASA at International Resource Group Pakistan b).Expert knowledge of Cisco Rotuers and Layer2,Layer3 Switches Experience and good hand on Cisco Routing and Switching c).Expert knowledge of all kinds of VPN solution Implementation of Site to Site VPN between Telenor and CellTrack International DataCenter Implementation of Site to Site VPN between Warid and CellTrack International DataCenter Implementation of Remote Access VPN for British American Tobacco Company Implementation of Remote Access VPN solution for International Resource group Islamabad Installation, Configuration, Monitoring and Troubleshooting of Router(s), Switch(s), Firewall(s) and VPN(s) Specialties: VOIP Solutions Linux System Administration Shell Scripting Network Security Routing and Switching Network Design Python and Django Django Rest Framework
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    Communications
    Phone Support
    Iptables
    MySQL
    Cisco IOS
    VICIDIAL
    VPN
    Cisco ASA
    Asterisk
    Linux System Administration
    FreePBX
    Cisco Router
    Ubuntu
    CentOS
  • $100 hourly

    • 5.0/5
    • (90 jobs)
    Greetings! I am a proficient VoIP developer with a focus on Asterisk, Kamailio, and PHP Laravel, backed by substantial experience in backend development. Beyond this, I possess a strong AI background, enabling me to create cutting-edge VoIP solutions enriched with artificial intelligence capabilities. My Expertise Includes: VoIP: Asterisk, Kamailio, RtpEngine, SIP, RTP, SRTP, Call Center Solutions: Twilio, Sip trunk, Numbers Automation & Autopilot: Enhancing efficiency through smart processes Web Development: PHP Laravel, API development, Laravel Nova, Frontend Technologies: Vuejs, Tailwindcss, TailwindUI Database: Mysql, Redis, JSON for data storage and retrieval Version Control: Git, Github, Gitlab, Bitbucket, Gitflow Agile Project Management: Jira, Scrum, Trello for streamlined collaboration Server & Infrastructure: Linux, Centos, Ubuntu, Firewall, Fail2ban, Virtualization DevOps: Docker, Kubernetes, ensuring smooth and scalable deployments AWS: EKS (Elastic Kubernetes Service), ECS (Elastic Container Service), and comprehensive knowledge of other AWS services for a robust cloud infrastructure. AI Integration: Utilizing AI in VoIP solutions, including Text-to-Speech and Speech Recognition, to deliver personalized and interactive experiences over the phone. Chatbot Implementation: Creating intelligent chatbots for seamless communication and enhanced customer support in VoIP applications. I am enthusiastic about leveraging AI technologies to revolutionize VoIP solutions, providing exceptional user experiences and increased efficiency for your projects. Let's collaborate on long-term ventures and harness the potential of AI to transform your VoIP systems. Please feel free to reach out, and let's explore the possibilities together!
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    VoIP Administration
    Telecommunications
    VoIP
    Application Integration
    Asterisk
    Telecommunications Engineering
    VoIP Software
    Kamailio
    Linux System Administration
    API Development
    Laravel
    API Integration
    PHP
  • $25 hourly

    • 4.6/5
    • (195 jobs)
    Hello, Thanks for visiting my profile. This is Abid Ur Rehman, Certified Asterisk Developer DCAP, VoIP Consultant, VICIDial, FreePBX SCE, 3CX v18 and v20 Certified Advanced Engineer, Elastix ECE, GoAutoDial, The SIP School SSCA, PBXWare, A2Billing, FreeSWITCH, Twilio, FusionPBX, ASTPP, Network CCNA, Windows Servers MCSE, and Linux RHCE certified expert. I graduated with a BS in Telecommunication and an MSc in Telecommunication Networks. Having 10 years of VoIP/Linux/IT/Network planning, design, development, deployment, optimization, administration, and support experience in top-notch organizations such as Telappliant Ltd., Cybergen, SCB Global, Dialer360, and Primo Dialer. Skills and Certification: IP PBX: 3CX, Asterisk, FreePBX, Elastix, PBXware MT, FreeSWITCH, FusionPBX, Issabel, VoIPOffice Bitrix24 integration with FreePBX with or without the InforUnity module and with 3CX Pro/Enterprise. SMS Blast/Broadcast using SignalWire, VoIP.ms, Telnyx, Anveo, Bandwidth.com, Plivo, Skyetel, Twilio, VoxTelesys, BulkSolutions, Flowroute, Intelepeer, and BulkVS Telecom Billing: A2Billing, ASTPP, Yeti, VOS3000, and Magnus Billing. Dialer: VoiceBroadcast, VICIDial, GoAutoDial, VICIBox Multi-Server Clustering, Dialer360, Primo Dialer IP Phones: Aastra, AND phone, Algo, AudioCodes, Cisco, Cisco/Linksys, CloudTC, Cortelco, CyberData, Digium, H-Tek, Incom, Intelbras, Konftel, Mocet, Norphonic, Obihai, Panasonic, Patton, Phoenix Audio, Polycom, Snom, Thomson, Unidata, Uniden, VTech, Xorcom, Yealink, Yealink/Dreamwave IP PBX (hardware): Sangoma PBXact UC (and FreePBX phone system), Elastix IP PBX, Grandstream UCM, Yeaster S-series, Renegadepbx-1U-Appliance-with-FreePBX, Patton's SmartNode Branch eXchange (SNBX), SwitchVox, OpenVox. VoIP Providers: USA and Canada: Twilio, VoIP.ms, Switch2VOIP, SignalWire, Anveo, Alcazarnetwork, voxbeam, Telus, RingCentral, Call Centric, Voyant (Vitelity), Nextiva, bandwidth.com, Altotelecom, FlowRoute, QuestBlue, sip.us, DIDLogic, Nexmo, Plivo, siptrunk.com, Telnyx, IDTExpress, Zadarna SMS and BulkSMS: I can write code for you to send and receive SMS using any Asterisk and FreeSWITCH server and through popular providers like Telnyx, Twilio, Bandwidth.com, VoIP.ms, SignalWire. For bulk SMS, I can setup a code with the front-end for sending bulk SMS from a CSV . UK: Fuse 2, BT, VoIPTalk, DrayTEL, Telappliant, Gamma, sipgate, VoIPFone, VoiceFlex, Voicehost, Brightstar, Yellowgrid, Gradwell, T4com Ltd, Voxbeam, and Spitfire Linux Distro: CentOS, Redhat EL, Ubuntu, OpenSUSE, Debian, Back Track (Kali Linux) Windows machines: Windows Server 2012 and 2016, Windows Desktop 11, 10, 8, 7, and XP. Cloud Platforms: AWS EC2 and LightSail, GCP, Vultr, BlueHost, HostGear, Hetzner, and Digital Ocean Hypervisor: VMware ESXi, station and player, VirtualBox, ProxMox, oVirt, HyperV, I would be very happy to assist start-ups as well as SMEs in achieving their goals and business objectives. Thank you!!
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    Twilio
    VoIP Administration
    PBX
    Full-Stack Development
    VoIP PBX
    MySQL
    A2Billing
    3CX
    Kamailio
    Asterisk
    FreeSWITCH
    Linux System Administration
    FreePBX
    VICIDIAL
    VoIP
  • $15 hourly

    • 5.0/5
    • (4 jobs)
    I am a Cisco and Microsoft Certified Network Engineer and I have 11 years of experience in designing, implementing, and providing operations support for medium and large enterprise networks. I have experience in working on Cisco routers and switches, Juniper/Cisco/Palo Alto firewalls, F5 load balancers, Riverbed WAN Optimizers, and Cisco/Aruba wireless controllers and Access points. I design network and security infrastructure which can scale, has high availability, and can proactively detect and resolve issues to maintain network uptime of 99.9% and to deliver uninterrupted business continuity. I can also help you identify other OEM hardware for your business requirement, something with zero touch provisioning, high ROI, low initial capital, but is reliable in terms of hardware and software. I can also help you troubleshoot network and infrastructure issues in a multi vendor environment, which interoperates with storage, systems, and servers. Talk to me in order for me to quote a custom gig for your business based on the number of devices in your network.
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    Cisco Certified Network Associate
    VoIP PBX
    OpenVPN
    Linux System Administration
    VPN
    Wireless Network Implementation
    VoIP Administration
    Network Design
    Cisco CallManager
    Cisco Router
    Ubiquiti
    Network Administration
    Windows Server
    Microsoft Azure
  • $59 hourly

    • 4.4/5
    • (321 jobs)
    🏆 8,000+ 𝗛𝗢𝗨𝗥𝗦 𝗪𝗢𝗥𝗞𝗘𝗗 | 🏆 500+ 𝗝𝗢𝗕𝗦 𝗖𝗢𝗠𝗣𝗟𝗘𝗧𝗘𝗗 Experienced Network Engineer. Proficient in Cisco, Fortinet, HPE ,Meraki, AWS, Azure, Juniper, Sonicwall, Sophos, Draytek, Palo Alto etc. Highly motivated and always eager to learn and master new technologies Proven performance in fast-paced and high-stress working environments. Strong analytical skills with exceptional attention to detail. Experience Highlights: • Network Administration: VLAN, VPN, Wireless networks, Network equipment (HP, Cisco, Huawei, Juniper), Deep network architecture expertise • Wireless Technologies: Aruba (WLC, Clearpass), Fortinet, Aerohive, Cisco (WLC), Meraki • Routing Protocols: BGP, OSPF, EIGRP, IS-IS, RIP, Static routing • High Availability: Active-passive clusters (HSRP, VRRP, JRRP), Load-balancing • Security: Firewalls (ASA, FWSM, Fortigate, Juniper SSG, SonicWall, pfSense), PKI, IDS/IPS, Antivirus, Antispam techniques, RADIUS (Windows / FreeRadius) • Voice & Video Conferencing: Polycom, Skype, Cisco (VCS, CCM, CUCM, Unity, IMP), Nortel, Asterix (TrixBox, Elastix) • Digital Marketing: Facebook Ads, Google Ads, Appsflyer, TikTok Ads, Retargeting, Event Tracking, Audience Management • Network Management Systems: Cisco Prime, Cacti, PRTG, Zabbix, NAGIOS
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    Sophos Sophos UTM
    Network Analysis
    WiFi
    Cybersecurity Tool
    Network Design
    AWS Lambda
    Google Cloud Platform
    Microsoft Azure
    PfSense
    Check Point
    Palo Alto Firewalls
    Cisco ASA
    Cisco
    Aruba
    Fortinet
  • $35 hourly

    • 5.0/5
    • (7 jobs)
    Network Engineer with 8+ years of experience in Network Design, Configuration, escalation support, and network administration. Skilled in delivering technical support, managing network operations, and managing enterprise WAN & LAN across multi-platform and high uptime Data Center environments. Mainly working on Cisco, Mikrotik, Draytek Routers. Also working on Cisco Meraki, Cisco ASA, Hillstone, and Fortinet firewalls. Protocols include BGP, MP-BGP, EIGRP, IS-IS, OSPFv2, OSPFv3, HSRP, GLBP, IPSec, and OpenVPN. Other technologies include, Asterisk & Freepbx VLANs, VTP, Etherchannel IPv6 implementation WLAN security
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    Network Analysis
    Computer Network
    System Administration
    Cisco Certified Network Professional
    Cisco Router
    MikroTik RouterOS
    Red Hat Enterprise Linux
    Network Administration
    Network Design
    Ubiquiti
    Network Engineering
    Cisco Meraki
    VPN
    Network Security
    Cisco ASA
  • $15 hourly

    • 4.7/5
    • (59 jobs)
    As a highly experienced IT professional with over 10 years of expertise in Helpdesk IT Support Tier 2, I am dedicated to providing exceptional technical support to businesses of all sizes. My service encompasses a wide range of activities aimed at ensuring the efficient functioning of your IT environment. Here's what you can expect from my Helpdesk IT Support Tier 2 service: Advanced Troubleshooting: I have a deep understanding of IT systems, networks, and software applications. When issues arise, I can quickly identify the root cause and provide effective solutions, minimizing downtime. User Assistance: I offer prompt and friendly assistance to end-users, helping them with technical issues, software installations, account setups, and general IT-related inquiries. Ticket Management: I am well-versed in ticketing systems and can efficiently manage and prioritize support requests, ensuring that critical issues receive immediate attention. Remote Support: With the ability to provide remote support, I can resolve issues efficiently without the need for on-site visits, reducing costs and minimizing disruptions. Documentation: I maintain comprehensive documentation of support activities, including solutions to common problems, to facilitate knowledge sharing and future reference. Escalation Handling: In cases that require Tier 3 support or specialized attention, I am proficient in escalating issues to the appropriate teams or experts. Software and Application Support: I am experienced in supporting a wide array of software and applications, including Microsoft Office Suite, Adobe products, email clients, QuickBooks, Sage and more. Service 2: Server Administration Tier 3 With over a decade of hands-on experience in Server Administration Tier 3, I offer specialized expertise in managing and optimizing server environments. My service is tailored to meet the specific needs of your organization's server infrastructure. Here's what you can expect from my Server Administration Tier 3 service: Microsoft Azure Cloud Services: I am well-versed in Microsoft Azure, including the provisioning, configuration, and management of virtual machines, storage, and other Azure services. I can help you leverage the cloud for scalability, cost-efficiency, and flexibility. Server Deployment and Maintenance: I have a proven track record in setting up, configuring, and maintaining Windows and Linux servers, ensuring they operate at peak performance. Security and Compliance: I implement robust security measures to protect your servers and data, including regular updates, firewall configuration, access controls, and compliance with industry standards. Backup and Disaster Recovery: I design and implement reliable backup and disaster recovery solutions to safeguard your critical data and minimize downtime in case of unforeseen events. Performance Optimization: I continuously monitor server performance and fine-tune configurations to ensure optimal resource utilization and response times. Firewall Expertise: I have extensive experience working with various firewall technologies, including FortiGate, Fortinet, Sophos, WatchGuard, and SonicWALL. This expertise allows me to secure your network infrastructure effectively. Patch Management: I handle patch management, applying updates and security patches to servers in a timely manner to mitigate vulnerabilities. 24/7 Monitoring: I offer round-the-clock monitoring to detect and address server issues proactively, reducing the risk of service interruptions. Documentation and Reporting: I maintain detailed documentation of server configurations, changes, and performance metrics. Regular reporting keeps you informed about the health and status of your server infrastructure. Scalability Planning: I work with you to plan for future growth, ensuring your server infrastructure can scale seamlessly to accommodate your organization's evolving needs. My commitment to excellence, in-depth technical knowledge, and extensive experience makes me the ideal partner for all your Helpdesk IT Support Tier 2 and Server Administration Tier 3 requirements. I look forward to collaborating with you to optimize your IT environment and drive your business's success. I’m ready willing to help as much as possible in your organization/Business tech issues. Looking forward to reply your queries.
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    Virus Removal
    Technical Support
    Remoting
    Backup Administration
    Windows Administration
    Veeam
    Windows 10 Administration
    Desktop Support
    Microsoft Hyper-V Server
    Microsoft Windows
    Microsoft Active Directory
    Windows Server
    System Administration
    Microsoft Exchange Server
  • $50 hourly

    • 5.0/5
    • (13 jobs)
    I am an IT veteran with more than 20 years experience with network technology such as: VoIP Telephony (Asterisk, FreePBX) Web Development (HTML, Javascript, CSS) Coding (PHP, NodeJS, .Net) Scripting (Powershell, Bash) Server Administration (Windows, Linux, Unix) Database Administration (MS SQL, MySQL, MongoDB) Virtualisation (XenServer, VMWare) Monitoring (Nagios) Automation (Ansible) I have helped to launch and run several successful businesses offering services such as: Web and email Hosting Web design specialising in eCommerce Hosted PABX (VoIP) services ADSL and Dial-up Internet Services (ISP) I have been involved with building and overseeing the SaaS/Cloud infrastructure of a major global hospitality software company, however no job or problem is too small for me to sink my teeth into. A natural-born troubleshooter, I thoroughly enjoy getting to the bottom of those niggling technical problems and making sure that they don't come back again. I hope that by helping you with your project, that I will be able to put my extensive knowledge to work for you and also continue to stay up to date on the latest technology that business are using to make their lives easier. Look forward to working with you!
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    PfSense
    VoIP Administration
    Microsoft SQL Server Administration
    Asterisk
    Ansible
    Windows Server
    Linux System Administration
    Virtualization
    Network Monitoring
    Nagios Core
  • $30 hourly

    • 5.0/5
    • (18 jobs)
    I am a passionate Network Engineer with 8 + years of experience. My core strengths are configuration and troubleshooting data, voice and video environments. Expert in Microsoft Teams Direct Routing, PBX, SBC, Ribbon Communications, Sangoma, Gateways, IP Phones, Core Infrastructure. I have a working knowledge of establishing core and enterprise-level VoIP services and integrating audio and video in Microsoft Teams. I can provide a complete end-to-end solution for MS Teams Direct Routing, including the software. I am an artist with good experience in Voice overs for commercials, narrations, explainer videos, and simple marketing videos.
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    Telephone System
    VoIP Software
    VoIP PBX
    Cloud Engineering
    Information Technology Strategy
    Microsoft Teams
    VoIP
    Information & Communications Technology
    VoIP Administration
    Solution Architecture
    Network Administration
    Session Initiation Protocol
    VMware vSphere
    Office 365
  • $150 hourly

    • 4.7/5
    • (123 jobs)
    I have over 20+ years 🏅 of experience in Cloud, System, Network, and Security Administration. My primary focus is on first understanding business objectives and then providing technical solutions. Communication and customer satisfaction are my top priority with every project. 👈👈👈 You are contracting someone who is an expert in multiple areas. Many projects start with an idea of what the problem is, only to find out it is something else. You won't have to go find another expert in that area to get the job done. 🏆🏆🏆 🌟 I have worked with clients of all sizes and all industries 🌟 ✔ MSPs ✔ Government ✔ Insurance ✔ Education ✔ Dallas Cowboys Football Stadium 🌟 Here are my core competencies 🌟 ✔ Server Administration: Windows and Linux ✔ Virtualization: VMware, Hyper-V, and Proxmox ✔ Network Administration: Switches, Routers, Load Balancers, and Wireless ✔ Cloud Administration: AWS, Azure, Vultr, OVHCloud, and Hetzner ✔ Cloud Productivity: Google Workspace and Microsoft 365 ✔ Firewall Administration: FortiNet/FortiGate, Cisco, Juniper, pfSense, Ubiquiti, Sonicwall, etc. ✔ Security Administration: Firewalls, Site-to-Site VPN, Remote Access VPN, Multifactor Authentication, and Endpoint Protection
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    Windows Administration
    Data Migration
    VMware Administration
    DNS
    Office 365
    Backup & Migration
    Cloud Security
    Google Workspace Administration
    Email Security
    Acronis
    Firewall
    Cloud Migration
    Network Administration
    SSL
    VPN
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