VoIP Consultants & Developers

Showing 7,947 freelancers

VoIP Consultants & Developers

Showing 7,947 freelancers

  • Excel/VBA Consultant

    I am a full-time, home based IT consultant in Arkansas. I have extensive experience working with Excel and many other computer based programs. I have six months experience working with companies on a consulting basis, implementing custom business solutions. I … more

    I am a full-time, home based IT consultant in Arkansas. I have extensive experience working with Excel and many other computer based programs. I have six months experience working with companies on a consulting basis, implementing custom business solutions. I work 40 hours a week, and I can do work on any size job. I am always in the process of familiarizing myself with newer and up-to-date technologies and up to the challenge of taking on any projects that you may have. I am very familiar in helping people with their technical needs, as I have eight years of experience working as a supervisor at a large telecommunications company in Las Vegas, NV. I enjoy helping people with their technical needs and try to go above and beyond for them in any way that I can. Business solutions is my specialty and I place a high value on honesty, integrity, and getting the job done right.  less

    microsoft-excel spreadsheets data-scraping 00 more less
    • $35.00 HOURLY RATE
    • 4.9
    • 406 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
  • 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
    • 165 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 2 TESTS
  • Perl hacker and Voip Expert

    I have more than 6 years working experience of voip industry. i am proficient in Asterisk, Freeswitch, Kamailio,Fusionpbx, A2Billing, Freepbx,Freeside and Linux Administrator. And i have planned and built dozen multi-tenant carrier pbx. i have been always supporting … more

    I have more than 6 years working experience of voip industry. i am proficient in Asterisk, Freeswitch, Kamailio,Fusionpbx, A2Billing, Freepbx,Freeside and Linux Administrator. And i have planned and built dozen multi-tenant carrier pbx. i have been always supporting two muti-tenant carrier pbx systems based thirdlane and FusionPBX which both have more than 500 concurrent calls and 3000 registrations extensions. I am able to coding with C/C++, Perl, PHP, shell, sql and other programming language. I am steady, honest and hard-working. I am fond of innovation and pursuiting new techonologies. click here to know me more: https://click.2-call.me/apa1  less

    asterisk a2billing freeswitch perl linux-system-administration c++ 00 more less
    • $27.78 HOURLY RATE
    • 4.7
    • 2192 HOURS
    • CHINA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 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
  • IOS Developer, Netsuite Consultant, C#.Net Consultant, SQL Consultant

    6 Years in Software Development Over 3 years of Netsuite ERP, CRM, Website, Scripting Consulting. - Netsuite API (Server and Client), Webservices(PHP, JAVA, C#), Workflow - Reference Cart, Checkout Development, My Account, ShopFlow, customizations and development (from scratch and enhancements) - Netsuite … more

    6 Years in Software Development Over 3 years of Netsuite ERP, CRM, Website, Scripting Consulting. - Netsuite API (Server and Client), Webservices(PHP, JAVA, C#), Workflow - Reference Cart, Checkout Development, My Account, ShopFlow, customizations and development (from scratch and enhancements) - Netsuite Form Customizations, and others - Netsuite Implementation and Migration - Saved Searches - SEO Optimization - HTML Email template compatible for all mail servers - Website Template creation, SSP Applications. Javascript framework - backbone MVC, underscore, require, templates, common.js, bootstrap, jquery, JSON Over 2 and a half Years in C# development and support - WPF, Sharepoint, ASP.Net MVC 5 , Winforms Over 2 and a half Years of MS SQL development 1 Year in IOS development with 2 apps in the apps store Programming Skills - C#, C++, JAVA, SQL, TSQL, PLSQL, Javascript, JQuery, JSON, Lua, IOS3.5-7, PHP, CSS3, HTML5, Google API  less

    ios-development microsoft-visual-c++ c# netsuite-development javascript microsoft-sql-server-development 00 more less
    • $55.00 HOURLY RATE
    • 4.7
    • 1592 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 7 TESTS
    GROUPS:
  • 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
    • 113 HOURS
    • INDIA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 2 TESTS
  • Web Writer and Translator

    I'm an native Italian speaker and freelancer. I have been working as a web writer and as a English to Italian translator for the last 2 years. I'm able to work in Italian, English and Spanish (translation, proofreading … more

    I'm an native Italian speaker and freelancer. I have been working as a web writer and as a English to Italian translator for the last 2 years. I'm able to work in Italian, English and Spanish (translation, proofreading, web research, creative writing, transcription). I usually work for the most famous marketplaces and crowdsourcing websites (Greatcontent, o2o, Melascrivi, Texbroker, Clickworker, Appen).  less

    microsoft-excel microsoft-word translation-english-italian translation-english-spanish transcription creative-writing content-writing article-writing seo-keyword-research proofreading 00 more less
    • $10.00 HOURLY RATE
    • 5.0
    • 1141 HOURS
    • ITALY
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 10 TESTS
  • Developer

    Areas of Expertise: Computer Languages & Related Topics Expert: C++, C, C#, VB, .NET, Java, Rexx , PHP, Javascript, (JQuery, Ajax), ActionScript, Flash Intermediate: Perl, Pascal, Python, COBOL, Asm. (HC11, 80x8x), MVC, Scrum, Adobe Products Beginner: Clipper, Asm. (PowerPC), Ruby & RoR, SOAP … more

    Areas of Expertise: Computer Languages & Related Topics Expert: C++, C, C#, VB, .NET, Java, Rexx , PHP, Javascript, (JQuery, Ajax), ActionScript, Flash Intermediate: Perl, Pascal, Python, COBOL, Asm. (HC11, 80x8x), MVC, Scrum, Adobe Products Beginner: Clipper, Asm. (PowerPC), Ruby & RoR, SOAP Web & Multimedia Technologies Expert: HTML5, CSS3, XML, Json, WordPress, eCommerce, FB API, Twitter API, Google Services, Paypal API, Red5, FMS, VoIP Intermediate: Magento, Autorize.net API, Drupal, Joomla, Open Cart, IPTV Beginner: Zend Framework Operating Systems Expert: Win (9x, NT, 2000, XP, 2003, Vista, 7, 8), Android, Linux, BSD, (LAMP) Intermediate: Aix, SCO, OS/2, iOS, ChromeOS Beginner: VMS, CP/M, JavaOs Databases and Access Protocols Expert: MS-SQL, MySQL, ODBC, JDBC, SQLite Intermediate: ORACLE Network Protocols and File Systems Expert: TCP/IP, NETBIOS, SMB, FAT, HTTP, SMTP, POP, SSH, SSL, FTP, RMTP, HTTP Streaming Intermediate: IPX/SPX, NFS, RTSP, MMS Beginner: VFAT Spoken & Written Languages Expert: English, Spanish  less

    actionscript-2 actionscript-3 jquery php ajax javascript java c c# c++ wordpress android-app-development 00 more less
    • $66.67 HOURLY RATE
    • 5.0
    • 146 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 10 PORTFOLIO ITEMS
    • 2 TESTS
  • Linux System Admin/AWS Specialist/Linux and AWS Trainer

    Red Hat Certified Architect Red Hat Certified Datacenter Specialist Red Hat Certified Engineer. Specialisation in AWS Platform and services such as EC2,S3,RDS,EBS,ELB,AutoScaling,VPC,Route53 and other services. Specialisation in Virtualization using VMWare, KVM and Red … more

    Red Hat Certified Architect Red Hat Certified Datacenter Specialist Red Hat Certified Engineer. Specialisation in AWS Platform and services such as EC2,S3,RDS,EBS,ELB,AutoScaling,VPC,Route53 and other services. Specialisation in Virtualization using VMWare, KVM and Red Hat Virtualization Hypervisor. Hosting virtual Machines on Bare metal servers. Managing virtual machines on VMWare vCenter and RHEV-M Expertise in Hosting LAMP on cloud and Dedicated Servers. Linux expertise in Red Hat / CentOS / Debian / Ubuntu / Amazon Linux I've over seven years of experience working in Linux environment and worked on various projects over the year involving Cloud and Dedicated servers. Being sysadmin I have worked on IBM, HP and DELL Rack Mounted Servers. Knowledge of Enterprise Infrastructure technologies and architecture. Worked as consultant on various projects in the past to design and implement an environment which uses SAN, Linux and Clusters to run Applications. Apart from the technical work I am an active member of serverfault.com community and contribute towards community in helping others. Certifications Done: Red Hat Certificate of Expertise in Enterprise Cluster and Storage Management. Red Hat Certificate of Expertise in Deployment and Systems Management. Red Hat Certificate of Expertise in Directory Services and Authentication  less

    linux-system-administration apache-administration nginx amazon-ec2 amazon-web-services lamp-administration varnish-cache vmware-administration clustering unix-system-administration 00 more less
    • $22.22 HOURLY RATE
    • 4.9
    • 347 HOURS
    • INDIA
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 9 TESTS
  • PHP developer

    My name is Denis and I am from Russia. I am experienced PHP developer with 5 year development experience of web applications. Skills: Languages: php, javascript, bash scripting, html, css Frameworks: zend framework 1, jquery, dojo framework (javascript), 960 grid system framework (css) IDE: jetbrains phpstorm Please, check my tests.

    php mysql data-structures freepbx javascript nginx zend-framework css html dojo 00 more less
    • $14.00 HOURLY RATE
    • 5.0
    • 23 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 7 TESTS
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