VoIP Consultants & Developers

Showing 1,683 freelancers

VoIP Consultants & Developers

Showing 1,683 freelancers

  • VoIP/Linux Administrator

    I always love to learn new technologies and try my best to accomplish new and challenging tasks. 1. Complete IP PBX from scratch (Asterisk and freepbx) 2. Elastix (call center, fax server) 3. PIAF (With all Nerd Vittels scripts and … more

    I always love to learn new technologies and try my best to accomplish new and challenging tasks. 1. Complete IP PBX from scratch (Asterisk and freepbx) 2. Elastix (call center, fax server) 3. PIAF (With all Nerd Vittels scripts and tricks) 4. Trixbox and Freepbx Distro 5. Call center applications (Goautodial, Vicidial, Elastix) 6. Broadcast and AutoDialer(Goautodial) 7. VoIP calling card, pinless calling, wholesale, DID reselling (A2billing) 8. CRM with VoIP integration (Vtiger, SugarCRM, SuiteCRM) 9. Security of Servers and VoIP (Firewalls, Monitoring, Aleting) 10. VoIP security (Application security, Brute force attacks prevention, Fail2ban) 11. Monitoring of Servers and services (Nagios, Opsview) 12. High Availability and Failover (Heartbeat, DRDB, Pacemaker, Corosync) 13. Auto Proviosioning of IP Phones (Multiple vendors) 14. Asterisk custom dialplan 15. Fax server (Hylafax, Avantfax) 16. CDR statistics, Centralize CDR server for multiple Asterisk servers. 17. Missed call notifications, Queues reporting for Asterisk 18. Asterisk Operator Panels (Isymphony, FOP2) 19. VPN (OpenVPN, IPsec, PPTP with firewall security) 20. IVR (Database Backends) 21. Asterisk Integration with Digital PBXs i.e. Avaya, Nortel(sip trunking and PRI trunking) 22. GSM gateways with Asterisk (Openvox, GoIP, Dinstar, Quescom) 23. Networks (Switching, Routing, Security, Monitoring, Alerting, Optimization) 24. Firewalls (Pfsense, UTM, IPTables) I have practically experience of all the above mentioned products and technologies and I completed many custom projects using these. I am not limited to only these technologies, I always welcome to know new technologies and environments. I am always ready for a test job to prove my skills :-).  less

    asterisk trixbox freepbx cisco-routers vpn 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 150 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 2 TESTS
  • Computer Systems and Network Engineer CCNA|MCSA|MCITP|OCP|ITIL|VMWARE

    I have done Computer Systems Engineering, worked with different companies for three years and now starting to work as a full time Free Lancer. I have an extensive first hand experience of dealing with System Networks, Windows Servers ( 2003, 2008 … more

    I have done Computer Systems Engineering, worked with different companies for three years and now starting to work as a full time Free Lancer. I have an extensive first hand experience of dealing with System Networks, Windows Servers ( 2003, 2008),2012 different vendors Internet management and security solutions ( Hardware and software) like Air Live 802.11G Internet Access Server, Sonicwall,WatchGuard , ISA 2006 server, GFI Web Monitor, HP Servers, Client and server OS. Other than professional experience I have done Worked in following virtualization software's VMware ESXi 5.0-5.5 Microsoft Hyper-V, Sun/Oracle Virtual Box. Other than professional experience I have done different International Certifications CCNA. MCITP Windows7 Enterprise MCSA Windows 7 MCTS. | Windows 7 MCTS. | Windows 8 PRO: Designing and Deploying Messaging Solutions with Microsoft Exchange Server 2010 OCP( Oracle Sun Solaris OS 10 System Administrator) ITIL Foundation. VTSP 5 I have successfully completed following projects, that were for IT Govt Sector and five star Hotel's Planning Designing and Establishing Network Infrastructure using Microsoft Operational Framework (MOF v 4.0),network consisted of 200+ clients and 20 + servers (HP Proliant ML-150, ML-350,Dell Power Edge 2900). Installation configuration and management of ISA Server 2006,Juniper SSG 5 working together, providing security solution for more than 100 static and 200+ dynamic clients. Automate the process for Management of Internet User Account for the users by Implementation of RADIUS Server In-house developed Software Application Up gradation of clients systems from Windows XP to Windows 7 . Up gradation of domain from Server 2003 to server 2008 Enterprise R2 .  less

    microsoft-hyper-v-server windows-administration vpn security vmware-esx windows-7-administration asterisk voip-administration amazon-ec2 elastix 00 more less
    • $44.44 HOURLY RATE
    • 4.9
    • 523 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 13 PORTFOLIO ITEMS
    • 13 TESTS
  • Web Developer And Linux Administrator

    Great Work Experience in Web Development. Good Knowledge of versatile web applications. I have touched every aspect of web development, linux administration and always keep myself updated about the current trends and technologies it makes me to greatly understand the … more

    Great Work Experience in Web Development. Good Knowledge of versatile web applications. I have touched every aspect of web development, linux administration and always keep myself updated about the current trends and technologies it makes me to greatly understand the problems and devise a perfect and innovative solution for them. The area of expertise include PHP5, JAVA SE, LINUX, HTML, CSS, JQUERY, AJAX, CAKE PHP, CODEIGNITER and various CMS's currently present in the market that include WHMCS, Wordpress, Magento.. etc. Let me know your requirements, i will come up with and implementation model.  less

    php whmcs api-development javascript paypal-api amazon-web-services mysql amazon-mws amazon-webstore 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 95 HOURS
    • INDIA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 2 TESTS
  • iOS/Android/Xamarin/.NET/Asterisk Developer

    Great thanks for viewing my profile. I have 7 years experience in ANDROID, IOS and .NET developing. I have developed several smart type of MOBILE apps(20+) and WEBSITES(10+) using .NET. I can develop mobile app with NATIVE language … more

    Great thanks for viewing my profile. I have 7 years experience in ANDROID, IOS and .NET developing. I have developed several smart type of MOBILE apps(20+) and WEBSITES(10+) using .NET. I can develop mobile app with NATIVE language or using XAMARIN. I have also lots of experience in other WEB SKILLs(HTML5/jQuery/CSS, PHP) and Database Administration(MySQL, Oracle, Sqlite) I also have full experience in Asterisk and softphone calling apps. The 5 things made me different from other oDesk contractors. 1. I feel I am the best fit for this job, because I am a team player, very energetic. 2. I’m an Expert, Honest, Sincere and Responsible worker as I’m taking my work like my Responsibility. 3. Great communication with my Clients.(via Skype, Google Talk, Yahoo Messenger or direct phone, email) 4. I love to juggle multiple tasks; will go the extra mile to get the job done. 5. 100% GURANTEED Satisfaction. Respectfully, Samir Nassar.  less

    ios-development android-app-development asp.net-mvc php voip-administration asterisk 00 more less
    • $55.56 HOURLY RATE
    • 4.9
    • 217 HOURS
    • GERMANY
    • LAST ACTIVE
    • 14 PORTFOLIO ITEMS
    • 9 TESTS
  • RockStar iOS8/iPhone/iPad/Android/Parse.com/Back-end Develper

    ★★★★★ Client's Satisfaction ★★★★★ ★★★★★ High Quality ★★★★★ ★★★★★ Exact Deadline ★★★★★ Thanks for your visiting my profile. I am looking for a long-term relationship. I am a passionate person and immerse myself in whatever project. I have 7+ years of experience in iOS and … more

    ★★★★★ Client's Satisfaction ★★★★★ ★★★★★ High Quality ★★★★★ ★★★★★ Exact Deadline ★★★★★ Thanks for your visiting my profile. I am looking for a long-term relationship. I am a passionate person and immerse myself in whatever project. I have 7+ years of experience in iOS and Android Programming since 2008. I have been working as a mobile developer since I graduated university. When I started to work on freelancer, I thought mobile platform would be great in the near future, so I studied it and made many apps until now. Although android and ios version and device are getting different every year, I'm the person who is eager to learn new tech so learnt new industry technology as soon as it was born. Don't worry if there is new version like ios9 tomorrow, I'm ready to upgrade app from ios8 to ios9. My areas of specialization - iOS/Apple Mobile Application Development.(XCode, Objective-C, Swift) - Android/Google Mobile Application Development. (Eclipse, Android Studio, Java, Android) - PhoneGap/Cordova(jQueryMobile, SenchTouch, Ionic) - RESTful API and Web Application Development (PHP/MySql, Ruby on Rails, NodeJS) - Testing and Source Management with Git, Bitbucket, TestFlight, GIRA, agile My experiences: - Social Networking Integration(Facebook, Twitter, LinkedIn, Google+, Instagram, Youtube, VK) - Photo sharing with Parse.com - Realtime chat with Firebase and XMPP - Video and audio chat with QuickBlox and OpenTok. - Video and audio Live Streaming with VLC and FFMPEG - Camera Controlling by WIFI - Photo Editing(Color, Contrast, Brightness, Crop, Merge) - Calling by VoIP - Phone Verification - SMS Scheduling - Find Location by Geolocation. - GPS Tracking - Marketing by Geo-fence - Searching and discovering place by Foursquare - Uploading and downloading file to GoogleDriver - Video and Audio Player - File Synchronizing on Cloud Storage - Offline Data management by CoreData and Sqlite - RSS Feed Reader - Encryption and Decryption data by Encryption Algorithm - Barcode/QRCode recognition and generation - Speech Recognition: NDEV, Google Speech Recognition - Google Translate, Google TTS, ReadSpeaker's TTS - Bluetooth LowEnergy(BLE), iBeacon, NFC - In-App Purchase and In-App Billing, Paypal and credit card Integration, Stripe - Push and Local Notification, Google Analytics - Google Maps, Foursquare, Geolocation, GPS, Geofencing, Open Street Maps  less

    swift ios-development iphone-app-development objective-c android-app-development java bluetooth payment-gateway-integration amazon-web-services ruby-on-rails 00 more less
    • $55.56 HOURLY RATE
    • 5.0
    • 74 HOURS
    • MALAYSIA
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 23 TESTS
  • Asterisk/PHP/MYSQL/Vicidial/FreePBX/Linux/Expert

    Extensive, practical and relevant industry experience in the following area : -> Asterisk and FreePBX customizations. -> Custom Asterisk Development (PHPAGI,Bash Scripting). -> Hosted PBX Solutions (Amazon AWS, DIgitalOcean, SolarVPS). -> Complex IVR Solutions (Databases Integrations, Web App Integration). -> Call Center Solutions (Vicidial,Goautodial … more

    Extensive, practical and relevant industry experience in the following area : -> Asterisk and FreePBX customizations. -> Custom Asterisk Development (PHPAGI,Bash Scripting). -> Hosted PBX Solutions (Amazon AWS, DIgitalOcean, SolarVPS). -> Complex IVR Solutions (Databases Integrations, Web App Integration). -> Call Center Solutions (Vicidial,Goautodial). -> Customized Broadcasting solutions. -> Technical Consultancy. -> Asterisk & MYSQL-PHP Integration. -> Asterisk Security (Fail2ban, IPTABLES). -> PHP&MYSQL Developer.  less

    asterisk mysql php linux-system-administration bash-shell-scripting javascript jquery ajax 00 more less
    • $35.00 HOURLY RATE
    • 5.0
    • 8 HOURS
    • DOMINICAN REPUBLIC
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 1 TEST
  • whmcs expert developer

    I have 7 years of experience in WHMCS and WHMCS modules development ,whmcs theme customization , whmcs payment gateway modules, whmcs re-seller modules development,whmcs domain registrar, Whmcs + iphone app development , whmcs + wordpress . I have handled more then 100 projects and … more

    I have 7 years of experience in WHMCS and WHMCS modules development ,whmcs theme customization , whmcs payment gateway modules, whmcs re-seller modules development,whmcs domain registrar, Whmcs + iphone app development , whmcs + wordpress . I have handled more then 100 projects and have integrated many complex payment gateways.I have experience in creating multi language websites in WHMCS. Apart from Expertise in WHMCS I have strong hand in Asterisk , PBX , VOIP, a2billing as well. There are lots of modules that I have created and customized in a2billing. I love programming and I am always eager to take new challenges. I have also developed websites in Joomla, Wordpress and core PHP with MySql. I have also developed web applications for Real Estate and Multi Level Marketing.  less

    whmcs cakephp payment-gateway-integration whm a2billing asterisk freeswitch payment-processing paypal-api authorize.net django-framework api-development youtube-api api-documentation ios-development 00 more less
    • $15.22 HOURLY RATE
    • 4.6
    • 4180 HOURS
    • INDIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 5 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • Asp.net php js css3 html5 jQuery

    It's easy to find people promising everything and delivering almost nothing. My major strengths are in giving realistic promises, being responsive and responsible, concentrating on business needs and communications. So I am not a pure geek thinking about technology … more

    It's easy to find people promising everything and delivering almost nothing. My major strengths are in giving realistic promises, being responsive and responsible, concentrating on business needs and communications. So I am not a pure geek thinking about technology only but, first of all, a making-things-happen person. A bit of background. I am a senior developer with over 14 years of experience and PhD degree in Computer Science. Best areas of expertise I or my team can cover are ASP.NET, MSSQL, PHP, MySQL, HTML5, CSS3, Ajax, Javascript, jQuery, Umbraco, Joomla, Wordpress. Each area is proved by the projects worked on in the past and by clients ready to tell about their experience in working with me. Please see more fact about me to make the right choice. 1. I am giving new clients a trial period for their projects. If you are not satisfied with my work you pay nothing for the trial. 2. I have lifetime warranty for applications I’ve developed if they are unmodified. 3. I am creative, thoughtful, reliable, responsive, and responsible. I am always email, Skype message, phone call away from you. You can expect me answering you ASAP, thinking about your needs, giving suggestions and helping you. I will not disappear. 4. My price is pretty affordable as some of my US clients invoice $85-$120 per hour selling my services in the NYC area. 5. I am ready to supply you with contacts of my previous and present clients. You can email them or call and hear all the truth about me. 6. I have a team of developers around who are ready to work on complex projects. Thus, specialization, quality, and team expansion are not issues at all. Hopefully now you know enough who I am and why it’s worth to work together. If not, just contact me and I will deal with that as well. I will be happy to work with you!  less

    c# .net-framework html ajax php mysql c++ sql xml vba ios-development android-app-development project-management html5 paypal-integration authorize.net joomla umbraco wordpress 00 more less
    • $29.90 HOURLY RATE
    • 5.0
    • 9237 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 25 PORTFOLIO ITEMS
    • 1 TEST
    GROUPS:
    ASSOCIATED WITH:
  • VoIP & Web Developer

    ==================================================== VOIP and Web developer with more than 4 years experience. ==================================================== On VoIP field: ------------------ + I have strong skills on Asterisk, Kamailio, FreePBX, FreeSWITCH. + My favorite languages: Python, C++, PHP + I also used to VOIP API like Tropo, Vitelity, Twilio... On web … more

    ==================================================== VOIP and Web developer with more than 4 years experience. ==================================================== On VoIP field: ------------------ + I have strong skills on Asterisk, Kamailio, FreePBX, FreeSWITCH. + My favorite languages: Python, C++, PHP + I also used to VOIP API like Tropo, Vitelity, Twilio... On web developing field: --------------------------------- + I have strong skills on HTML/CSS, JS, NodeJS + I used some web framework like: Wordpress, Django, Codeigniter, Meteor ... Team management: --------------------------- Currently I am project manager of Designveloper JSC, with 18 developers and 2 designers.  less

    voip-software voip-administration wordpress adobe-photoshop asterisk twilio-api openvbx tropo node.js 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 1169 HOURS
    • VIETNAM
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 6 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • Top Certified iPhone/iPad and Android Apps develop

    4 years of strong development experience in iPhone and Android apps development. ============================================================ I am oDesk Certified mobile app developer, I have worked more than 1500 hours and delivered more than 30 well appreciated apps to my clients. I have Strong … more

    4 years of strong development experience in iPhone and Android apps development. ============================================================ I am oDesk Certified mobile app developer, I have worked more than 1500 hours and delivered more than 30 well appreciated apps to my clients. I have Strong experience in mobile app development and system integration like mobile or desktop application integration with remote server. My core skills and experience: # Objective-C, iPhone SDK, XCode, Cocoa, Cocoa Touch Frameworks. # Core Java, Eclips IDE, Android SDK, XML # Map Kit, GPS base user navigation and Tracking # Photo and Camera base app with many advance filers # Image processing in mobile apps, Image filters, Image Cropping and Image framing etc. # Web Server integration using JSON, SOAP, XML and REST Web Service APIs # SQLIte, Core Data and pList database design # Apple App Store and Google Play Store submission # FaceBook, Twitter, YouTube, Tumblr, Flickr, Instagram # Audio or Video streaming for Radio or TV base app # Push Notification, In App Purchase, iAD, AdMob # Source code repository in SVN, Version GitHub etc. Test Flight build etc. I am fluent in written and speaking in english and so client never feel any issue in discussion and requirements clarification. I am always reachable on Skype so client get the status update on any time during development and testing phase. I am looking for long term business relationship where I can utilize my skill set and provide the best quality work.  less

    c c++ objective-c cocoa-touch apple-xcode 00 more less
    • $25.00 HOURLY RATE
    • 4.5
    • 1037 HOURS
    • INDIA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 3 TESTS
    ASSOCIATED WITH:
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