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Rating is 4.8 out of 5.
4.8/5
based on 332 client reviews
  2. Development & IT Talent
  3. Network Administrators
  4. (Current) VOIP Administrators
  • $25 hourly

    • 4.6/5
    • (32 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.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    SMS Gateway
    SMS
    API
    Linux System Administration
    JavaScript
    VoIP Administration
    Linux
    Kannel
    SMPP
    Docker
    PHP
    HTML
    Asterisk
    C++
    C
  • $45 hourly

    • 5.0/5
    • (7 jobs)
    I can take care of your IT Needs, or I can cover for someone not being able to live chat.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Helpdesk
    Online Chat Support
    VoIP Administration
    Information Technology Operations
    Network Planning
    Computer Maintenance
    OKTA
    OneLogin
    Mobile Device Management
    Computer Network
    Tech & IT
    Desktop Support
    Ticketing System
    Office 365
    System Administration
  • $35 hourly

    • 5.0/5
    • (78 jobs)
    I'm here to make your communication experience extraordinary. As the driving force behind RingCentral Expert and SME, I bring a wealth of knowledge in VoIP implementation and support, specializing in platforms like RingCentral, Zoom Phone, Avaya, and Goto Connect. Why Choose Me: I've always believed that expertise should come with a human touch. Here's what you can expect when working with me: Deep Roots in VoIP: I'm not just certified; I'm passionate about what I do. With certifications in RingCentral, Avaya, and Zoom, I'm well-versed in the intricacies of these platforms. Your Time Matters: I understand that every second counts in your business. That's why you can rely on me for prompt responses and effective solutions. Who I Serve: From small startups to large enterprises, I've had the privilege of assisting businesses of all sizes. My expertise spans various industries, including law firms, universities, fitness, and finance, to name a few. Here is a list of the most common tasks I perform within a VoIP platform: Call queues / Auto Attendant - IVR Call Forwarding / Call Routing Voicemail Setup / Custom Answering Rules Porting / User setup / Limited extensions SMS Automation** (New upgrade) Shared lines Multi Site Hot Desking Templates / Role setup Wide billing knowledge Call logging expert / Audit trail Announcement / Audio greetings - Voice over Call Recording / Holiday Config Desk Phone Provisioning Analog line integration with RingCentral VoIP - ATA config. Integration support. Let's Connect: I'm here, ready to be your partner in enhancing your communication systems. Reach out to me right here on Upwork, and let's start a conversation. Looking forward to understanding your unique needs and finding the perfect solution for you!
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    PBX
    Technical Support
    VoIP Administration
    VoIP Software
    Avaya
    RingCentral Glip
    Telephone System
    IVR Software
    Telecommunications Engineering
    VoIP
    System Configuration
    System Administration
    VoIP PBX
    Phone Support
    Business with 100-999 Employees
    Call Center Management
  • $125 hourly

    • 5.0/5
    • (59 jobs)
    I am an embedded systems engineer with backgrounds in Network and System Administration. Over the past 15 years, I have built a successful technology business and worked for international companies around the world. I am a dedicated project leader and experienced boots on the ground System Administrator with the skills necessary to complete your project. Currently I own a small company of just 3 that primarily provides custom/private cloud services Azure/AWS architecture and administration, Custom application deployment, DevOps, VoIP services and high performance databasing. I service small to medium sized business as well as the healthcare/government sectors. I currently specialize in: * Emergency Assistance / Debugging / Troubleshooting * Security Compliance - HIPAA/HITRUST, NIST, SOCx, ISO27001 & FedRAMP * High Availability/Redundant System Design * Amazon Web Services (AWS) / AWS Government * Microsoft Azure / Cloud for Government * Citrix XenServer / XenApp * VMware ESXi / vCenter / vRealize * VMware & Citrix platforms (Hardware & Hybrid) * Datacenter/Hardware Deployments (Worldwide) * VoIP (Voice Over IP) Services such as: FreePBX/PBXact, 3CX, Avaya IP Office, and more. * Custom Programming (Powershell, Bash, C++/C# - Limited to System Administration Functions) * Electronics & Embedded Systems Design * General System and Network Administration (Windows, Linux, Cisco IOS/PIX/NX-OS and more) Fractional CTO/CIO: * Departmental Restructuring * Procedures/Practices * Disaster Recovery & Patch management strategy * Policy/Plan Development * Sit-in consulting for strategy/planning meetings I also happily offer 24-hour emergency service and service contracts to individual businesses and Managed Service Providers! I am available 365 days a year 24 hours a day - please feel free to send me a message I typically respond within an hour. I can work with the following PSA/RMM Platforms: NinjaRMM, ConnectWise (manage & automate), SolarWinds n-able, Atera and ManageEngine products.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    VoIP Administration
    Penetration Testing
    Cloud Security Framework
    Linux System Administration
    FreePBX
    Asterisk
    System Security
    Cloud Computing
    Microsoft Azure
    Citrix
    VMware Administration
    Phone System
    Windows Administration
    Linux System Administration
  • $40 hourly

    • 5.0/5
    • (20 jobs)
    - Core VoIP development (embedded platforms) - VoIP systems & Appliances customization (Asterisk & FreePBX / Elastix / ViciDial, Freeswitch & FusionPBX) - SIP routing, hands on experience - over 10k calls per day (or 50+ concurrent calls) - vast knowledge of backend programming languages (C++, Perl, Python, Bash, Lua, PHP, MySQL stored proc) - Linux Security & Intrusion detection
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    FreePBX
    Automatic Speech Recognition
    Kamailio
    Linux System Administration
    WebRTC
    Project Management
    Bash
    VoIP Administration
    Asterisk
    Perl
    PHP
    Python
    MySQL
  • $65 hourly

    • 4.8/5
    • (342 jobs)
    For the past few years, I have been employed as a VoIP engineer and have aided numerous businesses with their customer acquisition, customer support, and overall communication through my services, including system design, setup, customisation, and maintenance. Communication is an essential element in any business, and my expertise can assist in constructing a dependable communication tool for your company. My primary areas of expertise are: - FreeSWITCH - Kamailio, OpenSIPS - Programming languages such as Python, Lua, PHP - Database management using PostgreSQL and MySQL - Server administration, Docker, and AWS. Thank you, Mohammad Kamruzzaman
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Fax
    Node.js
    OpenSIPS
    VoIP Software
    VoIP PBX
    Flutter
    VoIP
    VoIP Administration
    FreeSWITCH
    Django
    Business with 1-9 Employees
    MySQL
    Laravel
    MongoDB
    Python
  • $85 hourly

    • 5.0/5
    • (128 jobs)
    Hello! I am a Telecommunications and Networking Specialist and I primarily work with Cisco networking technologies, both wired and wireless, routing, switching, IP telephony and VoIP. Since 1999 I have had the privilege of working with multi-site organisations where these technologies have been applied to the fullest extent. In most cases, the applications of these technologies have been on an “enterprise” scale, with hundreds of users (or even tens of thousands for some municipal Wi-Fi networks) and tens of locations. I've been designing and managing Cisco IP telephony and data networks as well as writing proposals, RFPs and technical writing projects for large scale organisations in both the public and private sector in multiple countries including the USA, the UK and Greece. I’ve been technical manager of European funded projects and administrator for IP Telephony networks, data networks, municipal Wi-Fi networks and metropolitan fibre optic networks. I have a CCNP certification and four CCNA certifications in Routing & Switching, Security, Voice and Wireless. I am currently working towards my CCNP Collaboration and my CCIE certifications. I am also an instructor for Cisco Academy. Although I live in Greece, I was born and raised in Canada, so English is my first language. My Philosophy: The quality of my work and my services are of great importance to me. My goal is to always be on time, consistent and pleasant to work with. I will be clear and concise from the beginning, letting you know what each job entails and how much time it will take. All this will be done honestly, without fanfare and with integrity. I would even say that I will be chivalrous with my obligations towards you. This is good for you, because you’ll get done what you need to get done. This is good for me as well, because you will be pleased with my work and you will give me a good review. It’s a win-win situation! So I look forward to having the pleasure of working with you.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Cisco Certified Network Associate
    Technical Documentation
    Wireless Network Implementation
    Technical Writing
    VoIP Administration
    Cisco Router
    Cisco CallManager
    Cisco Certified Network Professional
    Network Planning
    Network Design
  • $65 hourly

    • 4.9/5
    • (9 jobs)
    ✅ Microsoft Teams, Telephony and Teams integrated Contact Centers (Luware Nimbus) ✅ M365 service design, migration ✅ Intune ✅ Defender ✅ Azure, Azure AD ✅ Powershell ✅ Terraform ✅ IT Networks, DNS, Certificates ✅ VoIP gateways (AudioCodes, Sonus/Ribbon SBCs) ✅ Skype for Business ✅ Exchange ✅ Active Directory, ADFS Certifications • MCSE: Productivity Solutions Expert • MCSA: O365 • ITILv3 Foundation • Microsoft 365 certified: Teams Administrator Associate (MS-700) • Microsoft 365 Certified: Teams Voice Engineer Expert (MS-720) • Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate (MS-721) I'm a seasoned IT Consultant with 10+ years of professional experience in the IT industry. Acting as an IT partner, providing expert guidance and support in various areas of information technology, including Microsoft 365, Azure, Networks, IT Infrastructure, Teams Telephony, Project Management, IT Infrastructure, Endpoint management and Security. Key responsibilites: Consultation Solution Design and Implementation Technical Support and Troubleshooting Security and Data Protection Training and Documentation Vendor Management Stakeholders Management Project reporting
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Microsoft Endpoint Manager
    Microsoft Office
    IT Project Management
    Microsoft Teams
    VoIP Administration
    Skype For Business
    Project Engineering
    Microsoft Exchange Online
    Computer Network
    Office 365
    Microsoft Windows PowerShell
    DNS
    Microsoft Exchange Server
    Windows Server
    Microsoft Active Directory
  • $35 hourly

    • 5.0/5
    • (21 jobs)
    I am a telephony engineer. I have good knowledge of SIP and PSTN. Experience: ● Asterisk; ● Alcatel-Lucent OXE 4400; ● System administrator linux (Centos, Ubuntu); ● FreePBX | Elastix | Kolmisoft MOR | Grandstream UCM | 3CX phone system | ● Pyhton, Bash, PHP scripting; ● GSM Gateway, ATA, SIP phone and etc. ● Zabbix ● Billing system Tariscope ● MySQL and PostgreSQL
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Linux System Administration
    VoIP Software
    VoIP Administration
    Grandstream
    FreePBX
    MySQL
    Session Initiation Protocol
    VoIP PBX
    Asterisk
    Ubuntu
    Linux
    CentOS
    Python
    Bash
  • $40 hourly

    • 5.0/5
    • (104 jobs)
    10+ years of professional experience in ISP and IT industry. I possess many skills in systems installation, configuration, upgrading, and maintenance. Specialties: # Virtualization and Cloud: OpenStack, Proxmox, KVM, VMware, AWS. # Application Server: Exim, Dovecot, Postfix, Zimbra, Bind, PowerDNS, Apache, Nginx, OpenVPN, PPTP, cPanel/WHM, rSyslog, Zabbix, Cacti, etc. # VoIP: Asterisk, FreePBX, Vicidial, FusionPBX, Voice Gateway, SS7 Media Gateway. # Others: Docker, Kubernetes, Ansible, iSCSI, GlusterFS, ZFS, TrueNAS, NFS, Ceph. Vendor Certification: # Red Hat Certified Engineer (RHCE) # Red Hat Certified System Administrator (RHCSA) # Red Hat Certified Specialist in Virtualization (RHCVA) Always ready to learn new Technology and Techniques. Thank you in advance for your time and consideration.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    VoIP
    DevOps
    IPv6
    Dovecot
    Virtual Private Server
    VICIDIAL
    Zimbra Administration
    FreePBX
    Elastix
    Exim
    VoIP Administration
    Asterisk
    Kubernetes
    Docker
    Linux System Administration
  • $25 hourly

    • 5.0/5
    • (68 jobs)
    I am 34 from the UK and have been working in VoIP for nearly 10 years i have experience in working with Asterisk based systems, i am Basic, Intermediate and Advanced Certified Engineer with 3CX PBX and have also have experience with Netsapiens and broadsoft. I have received certifications for Yeastar and also Certified for Grandstream UCM and Networking products and also have very good knowledge of yealink, Fanvil and snom products. I can set up from scratch or provide maintenance on your VoIP system which can include training and guides on how you can manage and troubleshoot yourself after the work. Contact me if you need help setting up, cleaning up or maintaining your system.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Technical Support
    System Configuration
    VoIP
    3CX
    Ubiquiti
    PfSense
    Linux System Administration
    Computer Network
    Grandstream
    FreePBX
    Asterisk
    Session Initiation Protocol
    VoIP Administration
    VoIP Software
  • $45 hourly

    • 4.3/5
    • (68 jobs)
    Well-developed project management and IT skills combined with a flexible attitude to work. Strong organizational skills in a variety of situations to achieve deadlines. Have initiative and can work independently or as part of a team. Get on well with people at all levels, easily making good working relationships. Overall IT Experience : Networking: (TCP/IP) V4 V6, VPN, ipSec; WLAN: Avaya, Ruckus, Aruba, Ubiquity; Security: Juniper, pfSense, Kerio Control, Websense, Acunetix, Mcafee; VoIP systems: Avaya Aura and IP Office Platform, 3CX Phone System, Kerio Operator, Asterisk, FreePBX, Elastix; Windows Server all editions; Linux Servers and Desktops (Debian, Ubuntu, RedHat, CentOS, Fedora); Active Directory: Windows, Samba4; Microsoft Azure Virtualization: ESXi VMware, Hyper-V, KVM, Virtualizor, Virtuozzo; Web-Servers: Php, Mysql, Ruby on Rails, TomCat, Apache, DNS, FTP, SSH, POP3, SMTP, IMAP; Web-Development: HTML, JAVA, PHP, CGI PERL, Flash, CSS); Joomla 1.0-3.5, Wordpress, Oscommerce, Drupal, SEO, Google Analytics, Google Webmaster tools. Other: WHMCS, Hostbill, Cpanel/WHM, Zpanel/Sentora, Kloxo, Plesk, Webmin, VestaCP, Google Apps; Unlike the others, I apply for only jobs I REALLY can manage. Please feel free to contact me with any questions You have.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Virtualization
    System Configuration
    cPanel
    Domain Migration
    SSL
    Microsoft Windows
    Linux
    Office 365
    3CX
    System Administration
    Microsoft Azure
    Linux System Administration
    Web Service
    Web Hosting
    VoIP Administration
  • $150 hourly

    • 4.9/5
    • (59 jobs)
    I am a solution-driven professional with over 10 years of experience consulting for CRM, ticketing, and phone systems. As a Business Systems Analyst, I assist my clients from the Discovery process (identifying business processes) through selection, implementation, and custom development of their software. Top CRM products I work with: Zoho CRM, Zoho Desk, Freshdesk, Freshsales, Zendesk Top phone and contact center systems I work with: RingCentral, Twilio, Talkdesk, Zoom, inContact, 8x8, DialPad and Nextiva Freshdesk development Zoho development RingCentral development TalkDesk development
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    System Configuration
    Business with 100-999 Employees
    VoIP Software
    Nextiva Business VoIP
    WebRTC
    SMS
    Chatbot Development
    VoIP Administration
  • $60 hourly

    • 5.0/5
    • (11 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 (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!
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Session Initiation Protocol
    VoIP
    CentOS
    Elastix
    FreePBX
    3CX
    Linux System Administration
    VoIP Software
    VoIP Administration
    Asterisk
  • $24 hourly

    • 4.9/5
    • (45 jobs)
    Solution-oriented information technology professional with experience in traditional PBX and IP telephony systems.Looking to excel in the field of VOIP and emerging technologies in networking. I am also a efficient full stack developer with 3+ years experience in application layers, presentation layers, and databases.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Pipedrive
    API
    API Development
    HubSpot
    API Integration
    System Administration
    3CX
    Call Center Management
    VoIP Software
    VoIP PBX
    Full-Stack Development
    Telecommunications
    JavaScript
    Python
    PHP
  • $70 hourly

    • 5.0/5
    • (24 jobs)
    I am highly skilled telecom engineer and expert, who not only see the big picture, but can design and implement it, with excellent analytical and problem-solving skills, solid experience in service development, design of distributed systems, high availability database designs, data conversion, migration and integration of databases. Expertise knowledge in data mining, ingestion, consumption, disaster recovery and core analytics solutions. Extensive hands-on experience in Big Data migration projects, Data Analytics, Data Modeling and ETL. I have a huge experience(over 15 years) in running technical teams from software developers, system and network administrators, and can be able to quickly evaluate project needs and provide appropriate solutions in a timely manner. My expertise: Operating Systems Linux, Unix (*BSD, Solaris, HP-UNIX), Windows, Cisco IOS, Mac OS, Android Telecom Cisco, Asterisk, Kamailio, SIP, VoIP, Biiling, IVR, Conferences Virtualization and Containers VmWare, KVM, Vbox, Docker, LXC Protocols VoIP (H323, SIP,MGCP, RTMPx), PSTN(ISDN, SS7, ITP, MAP), SNMP, SSH, DNS, POP3, IMAP, SMTP, FTP, HTTP, NFS, SSL, DHCP, BGP, OSPF, RIP Programing Languages JAVA (SE, EE, JDBC, JPA, JPQL, JSF, JSP, Servlets, Spring), PHP(3, 5, 7), JavaScript (jQuery, Vue), SQL(PLSQL, PGSQL), C / C++, Html, SSML, VXML, TCL-IVR, CSS CI/CD Ansible, JenkinsX Architectures REST, SOAP, WSDL, RPC, Microservices, Pub/Sub, Data transformation DB and MB PostgreSQL, MySQL, Oracle, Mongo, InfluxDB, Redis, RabbitMQ, Kafka ETL Apache NiFi Application Servers Apache, Sun GlassFish, Jetty Version control GIT, SVN, CVS Development environments Eclipse, IntelliJ IDEA, Android Studio, Atom The most intrested projects: Cloud Call Center Software for SaaS Data transformation system (ETL) Cloud PBX, IVR, Queue Software for SaaS Cloud invoice and billing system for SaaS Webrtc2SIP gateway for SaaS Similar service like Viber and Skype A.I. Dialer (pre-dictive, power, agentless, preview) Call routing and billing system Network and service monitoring system Telenor Bulgaria fix network VoLTE Conferencing system Realtime call transcription MCU Conferencing system
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Session Initiation Protocol
    Amazon Web Services
    SMS Gateway
    WebRTC
    VoIP
    OpenSIPS
    FreeSWITCH
    Software Design
    Telecommunications Engineering
    JavaScript
    PHP
    VoIP Administration
    Asterisk
    Kamailio
    Java
  • $100 hourly

    • 4.5/5
    • (25 jobs)
    Full-Time Googler Part-time Freelancer I am a telephony guru, but also have a strong focus in Network Engineering, Software Integrations, Backend Development, Network Security, Linux Administration, as well as a minor focus in Software Development and Scripting (Bash, Shell, Python, C, Go, JavaScript) I love tinkering and I use Upwork as a means of continued growth and I love the new challenges it presents, and I enjoy working with my clients to ensure they can get the best service on the market at a price point that can ensure long and beneficial relationships for both them and I. I look forward to hearing from you!
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    VoIP PBX
    FreeSWITCH
    Linux System Administration
    FreePBX
    VoIP Software
    Asterisk
    Provisioning
    Session Initiation Protocol
    VoIP
    VoIP Administration
    VPN
    Ubiquiti
    Linux
    Network Access Control
    Network Administration
  • $75 hourly

    • 4.9/5
    • (356 jobs)
    Is your hair on fire? I specialize in relationships with my customers. I understand the issue quickly and work to resolve your computer problem in short order. Contact me for your remote computer servicing, systems administration, conferencing setups, security audits, virus prevention, podcast setup, audio upgrades and more. Experienced Computer Support Specialist that has been in the business for numerous years. Comptia A+, Server+, Network+, Security+, Cisco CCNA, CCNA/Voice, CCNA/Wireless, Microsoft MCP, MCDST, MCTS, MCITP, and MCSA Certified in Microsoft Windows 7, 8, 10, Server 2008, Server 2012, and Server 2016. I have built custom desktops and I have serviced various desktops, laptops, and smartphones that have been released. Well-versed in the technological sector. Very knowledgeable and always give clear verbal answers to all questions. Reliable service and support. Customer satisfaction always key.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    IT Infrastructure
    Helpdesk
    VoIP Administration
    End User Technical Support
    Windows Administration
    LAN Administration
    Hardware Troubleshooting
    Incident Management
    IT Service Management
    WordPress
    Domain Migration
    Technical Support
    Google Workspace
    Security Management
    System Administration
  • $75 hourly

    • 5.0/5
    • (8 jobs)
    I am an experienced system administrator with a proven track record of managing and maintaining complex IT infrastructures. With 15 years of experience, I have expertise in system administration, server management, and network infrastructure. I am skilled in implementing and maintaining a wide range of technologies, including Windows/Linux servers, virtualization, cloud services, and backup solutions. I am dedicated to ensuring the stability, security, and efficiency of client's IT systems. Feel free to reach out to me to discuss your system administration needs or any questions you may have. I am looking forward to working with you. Thank you, Charlie Quick
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Office 365
    F5, Inc.
    Microsoft Active Directory
    Microsoft Azure
    DNS
    Cisco ASA
    Computing & Networking
    Ubiquiti
    VMWare
    Cisco Meraki
    Network Security
    VPN
    Ubuntu
  • $150 hourly

    • 5.0/5
    • (233 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!
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    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
  • $10 hourly

    • 5.0/5
    • (3 jobs)
    Bertrand Ndakena has a M.A. in Telecoms. He is a Udacity certified cloud developer and self-taught cloud administrator. Passionate about cloud developments/operations. Also interested in AI/ML and Data Science. Has extensive experience setting up cloud solutions(both open source and proprietary) and VOIP(including SIP-based) solutions.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    VoIP
    Session Initiation Protocol
    VoIP Software
    WebRTC
    Service Cloud Administration
    Elastix
    A2Billing
    VoIP Administration
    3CX
    VICIDIAL
    Asterisk
    FreePBX
    FreeSWITCH
  • $25 hourly

    • 4.0/5
    • (56 jobs)
    I can install, configure and support Asterisk, FreePBX, VICIdial based systems using VoIP or Telco (ISDN and/or POTS). I can work productively under minimum supervision and a fast learner. 15 years total experience in the field of Information Technology - Linux, Network, VoIP, Asterisk, Vicidial, FreePBX. Summary of my skills: * Asterisk , Vicidial , FreePBX, PiAF , Elastix , VoIP , Telecom (ISDN and POTS/Analog) * FusionPBX , Freeswitch , OpenSIPS * Linux System Administration (since 1998) – RHEL, CentOS, Debian, Ubuntu, OpenSuse * Unix System Administration: FreeBSD, OpenBSD and BSDi * Network Administration (Linux, Microsoft, Cisco Routers, Telebit Routers) * Touchstar-Noble Predictive Dialer, Altigen PABX , Aheeva Dialer * Microsoft Windows 2000 AS and Windows Server 2003 System Administration * Knowledgeable in Active Directory, IIS, DHCP, DNS, RDP, Terminal Services, TCP/IP and VPN * Knowledge in FIX Protocol (Financial Information Exchange Protocol 4.2 and 4.4) * I.T. Best practices in Change Management and Incident Management * Programming Languages: Active : Bash/Unix (shell) scripting, perl, AGI (asterisk) Passive : C/C++, Pascal, Delphi, Java, Visual Basic, Python, PHP * Database : MySQL, MariaDB, PostgreSQL, MS SQL 2000, MS SQL 2003 • Ability to learn quickly from self-study • Thorough experience in Linux system administration and automation • Thorough experience in configuring and deploying systems in a scalable and coherent manner • Experience in developing and marketing products using the Internet and Internet communities • Experience in project-management and leading a technical team
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Session Initiation Protocol
    VICIDIAL
    WebRTC
    Technical Support
    FreePBX
    Trixbox
    VoIP Administration
    VoIP
    DevOps
    Linux System Administration
    VoIP Software
    Asterisk
    Windows Server
  • $14 hourly

    • 4.9/5
    • (24 jobs)
    Venezuelan professional based in Cochabamba, Bolivia, sysadmin with a strong expertise in VoIP and Asterisk technologies. My primary focus is on providing exceptional solutions to clients, prioritizing efficiency, user-friendliness, and robustness. My core specialization lies in the following areas: VoIP and Asterisk: Extensive experience in configuring and managing various VoIP systems, including FreePBX, 3CX, Bicom PBXWare, and others. Proficient in tasks such as Auto Provisioning, UADs, Queues, IVRs, and Operation Times. IT and Networking: Skilled in networking, with expertise in setting up VPN Site-to-Site and RoadWarrior connections, configuring Firewalls, NAT, and VLANs. Proficient with routers and switches from leading brands like WatchGuard, Pfsense, Cisco, and Ubiquiti. Cloud networking experience, particularly in deploying WatchGuard and PFSense under virtualized environments. Proficient in managing Windows and Linux instances on AWS, including web servers and Docker containers for applications like UCRM/UNMS. Additionally, I have experience in establishing shared folders through cloud services using Storage Gateways. Familiar with RMM tools such as Ninja and Continuum, and well-versed in providing remote client support via TeamViewer and LogMein. Experienced in Veeam Backup & Replication, ensuring high availability for VMWare and Hyper-V Instances, and managing Veeam Availability Console Skilled in Active Directory management, handling tasks such as shared printers, user policies, and mapped drives. Also experienced in Windows RDS configuration. Electronics and Telecommunications: Successfully developed projects utilizing ATmega with Arduino platform, as well as implemented home automation solutions with Arduino and OpenHAB. Proficient in PLC Programming, particularly focused on the Rockwell family for Oil & Gas projects and automation of air/water/nitrogen skids. Noteworthy projects and achievements: Implemented monitoring solutions for integrated systems using Ansible. Successfully configured and managed +200 Raspberry PI terminals for Windows RDP, along with the configuration of Windows servers. Proficiently virtualized environments in both Hyper-V and VMWare. Deployed and configured PBX servers based on Asterisk with +1000 extensions, including FreePBX, Bicom PBXWare, and other solutions. Managed web servers and applications in various cloud environments, such as AWS, OVH, DigitalOcean, and Azure. I am dedicated to delivering excellent results and maintaining open communication with clients throughout the project.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    System Administration
    VMware ESX Server
    Microsoft Hyper-V Server
    Ansible
    VoIP
    Veeam
    Backup Administration
    Virtualization
    VoIP Software
    VoIP Administration
    Desktop Support
    PLC Programming
    Firewall
    Network Administration
    Microcontroller Programming
  • $45 hourly

    • 4.9/5
    • (276 jobs)
    Hello everyone, I am Martin. I will do my best satisfy my clients to the fullest. I have worked as professional software developer for about 20 years and have good experience in: -Asterisk, FreePBX -FreeSwitch, FusionPBX -Kamailio, OpenSIPs -WebRTC -PHP, MySQL -c/c++ -JavaScript, Node.js, HTML5/CSS -Linux System Administration, Networking -git, SVN I'm always working in a friendly environment so that we can make long term business relationship. I feel honored to have a continuously growing list of happy clients with positive feedback on my work.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    VoIP
    Kamailio
    Session Initiation Protocol
    Vue.js
    PHP
    TypeScript
    JavaScript
    FreeSWITCH
    Node.js
    MySQL Programming
    Asterisk
    FreePBX
  • $90 hourly

    • 5.0/5
    • (87 jobs)
    • CCNP Collaboration • Configure and troubleshoot Cisco Webex Calling • Transition customers from on-premise to Cisco Webex Calling • Extensive experience and training in designing, installing, and troubleshooting Cisco Unified Communications Manager, Unity Voice Mail, Unified Contact Center Express and other applications, Voice Gateways, and IP Phones • 3 years configuring, troubleshooting, and transitioning customers to Cisco Webex Calling • 22 years of configuring, troubleshooting, and testing Cisco Unified Communications Manager (CallManager) and other Cisco Applications • 24 networking experience • 24 operating system and Microsoft application experience • 24 years of project management experience • 24 years of installing, configuring, maintaining, and troubleshooting Cisco routers and switches
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Cisco Certified Network Associate
    Cisco Certified Network Professional
    Session Initiation Protocol
    Cisco UCS
    VoIP Administration
    Cisco IOS
    Cisco Router
    Cisco CallManager
    VoIP
    Network Administration
  • $50 hourly

    • 5.0/5
    • (66 jobs)
    Asterisk | Kamailio | FreePBX | Big data | AWS |Azure |GCP | Linux | Unix | Ubuntu | Debian | Puppy | VoIP Expert | IBM Watson | Google API | A2Billing | WebRTC | PHP | JSP | MYSQL | Oracle|Ansible|Docker Thanks for looking at my profile! I'm an IT Engineer offering more than 15 years of professional-level experience. I have deployed many Enterprise and Mid-Size Cloud, Network, and VoIP solutions worldwide. I am a professional Freelancer under a single roof with excellent communication skills, a fast learner, computer literate, can handle multitasking work and a very reliable contractor. Particularly interested in client/server and relational network design & develop using C/C++,Java,Php and C#. Always been interested in migration projects, as well as close interaction with the VoIP platform. I am always eager to provide quality work to my honorable clients. Hourly or fixed-price contract rates are negotiable depending on the work. I’m always working in a friendly environment so that we can make long-term business relationships, and feel honored to have a continuously growing list of happy clients with positive feedback on my work. I will do my best to satisfy my clients to the fullest. Do not hesitate to ask any questions you may have or discuss any ideas I may help you with. I am very easy to talk with.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    VoIP Software
    Natural Language Processing
    MySQL
    Linux System Administration
    Telecommunications Engineering
    IBM Watson
    VoIP Administration
    Asterisk
    FreePBX
    Session Initiation Protocol
    Red Hat Enterprise Linux
    VICIDIAL
    Google APIs
    Amazon Web Services
  • $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.
    vsuc_fltilesrefresh_TrophyIcon VOIP Administration
    Linux System Administration
    Asterisk
    3CX
    OpenVPN
    SQL Programming
    Docker Compose
    SQL
    Docker
    VoIP Software
    VoIP
    Django Stack
    Python Script
    Cisco
    Bash
    Python
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