OpenSIPS Freelancers

Showing 21 freelancers

OpenSIPS Freelancers

Showing 21 freelancers

  • Asterisk/Freeswitch/Kamalio expert, VoIP engineer, Linux administrator

    I have more than 10 years of experience in installation and support of carrier-grade VoIP services based on Asterisk, OpenSIPS, Kamailio, Freeswitch and proprietary SIP/VoIP software. My professional interests are Callcenters, automated dialer systems and intergration of VoIP with … more

    I have more than 10 years of experience in installation and support of carrier-grade VoIP services based on Asterisk, OpenSIPS, Kamailio, Freeswitch and proprietary SIP/VoIP software. My professional interests are Callcenters, automated dialer systems and intergration of VoIP with company information flows. I have developed complete SIP solutions for VoIP carriers worldwide: Proxy/Registrars, IVR, prepaid systems, multi-tenant VoIP switches, hardware PSTN gateways (Cisco, Audiocodes Mediant). As a programmer I use PHP, Javascript (both client-side using jQuery and Angular.js and server-side with node.js), Perl (system scripts/applications, Mojolicious webapps). I use my strong technical and project management skills for projects starting from single VoIP server to a complete wholesale/carrier VoIP solutions including billing, call data analytics and fraud prevention. I'm experienced network engineer, skilled in routing and switching, general network architecture planning and deployment, network monitoring and security. I can also offer you VoIP/SIP technical consulting support.  less

    voip-administration asterisk freeswitch opensips cisco-routers mysql php angularjs node.js linux-system-administration 00 more less
    • $55.56 HOURLY RATE
    • 4.9
    • 4 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
  • Java/Perl/ Linux/Voip/Asterisk/Opensips

    Last 14 years I worked as Internet Provider admin, with linux and perl in Brazil. I worked for 2,5 years as Voip Engineer with asterisk, openser and opensips in Australia. Worked for 1,5 years in Japan with Flex … more

    Last 14 years I worked as Internet Provider admin, with linux and perl in Brazil. I worked for 2,5 years as Voip Engineer with asterisk, openser and opensips in Australia. Worked for 1,5 years in Japan with Flex, now, I'm back to my home in Brazil, with my family working with Flex and Java at my new company a00s.com. We make software ERP to manage money and accounting for business companies. At my free time I like to discovery things by programing, some times with stock markets, some times like now, looking for math formula for prime numbers. I'm looking for some freelance job to increase my incomming, Once I want to go again to japan in this 2013.  less

    perl asterisk opensips java 00 more less
    • $27.78 HOURLY RATE
    • 5.0
    • 418 HOURS
    • BRAZIL
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 1 TEST
  • European system/VoIP administrator - Linux, VoIP, LAMP, Cisco, Amazon

    After 15+ years in system administration, I can say, I can help with any problem you could have. I was implementing clusters (http, asterisks, opensips), design and install high available infrastructure, finding bottlenecks in applications including resolution, design, install and … more

    After 15+ years in system administration, I can say, I can help with any problem you could have. I was implementing clusters (http, asterisks, opensips), design and install high available infrastructure, finding bottlenecks in applications including resolution, design, install and manage VoIP infrastructure with thousand of customers and mainly, bringing new ideas into life. Areas of knowledge: - Apache/HTTPD - installation, tuning, design of infrastructure - NGINX/HAPROXY - balancers, high availability infrastructure - PHP/MySQL - tuning for best throughtput - Asterisk - extensive administration for VoIP provider - Opensips - loadbalancing+high availability in voice services All this on Linux (Debian, CentOS, Ubuntu) and FreeBSD. - all type of clustering/virtualization - Xen, vmware etc. - all operations, scalability and high availability - Amazon/Rackspace - high available setups, hacks for automated deployment etc., about 50 instances under my management With all technologies, I was working with many companies, mainly from US and Canada. Everywhere, I was the person, on which main responsibility laid. My biggest advantage is, that I am working, until problem is not resolved - I am not blaming anybody, but working. Do you want to try it? Go ahead and drop me a line.  less

    apache-administration mysql asterisk opensips php nginx haproxy rackspace-cloudservers amazon-ec2 amazon-web-services 00 more less
    • $21.11 HOURLY RATE
    • 4.2
    • 4 HOURS
    • SLOVAKIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 TESTS
    ASSOCIATED WITH:
  • VoIP & Web Developer

    Best Service, Best time, Best choice I am a VOIP developer with more than 3 years. I have worked on many opensource like Asterisk, Kamailio, Freeswitch ... I have create many system voicemail, call center, sms from small to huge. I … more

    Best Service, Best time, Best choice I am a VOIP developer with more than 3 years. I have worked on many opensource like Asterisk, Kamailio, Freeswitch ... I have create many system voicemail, call center, sms from small to huge. I have using many API to VOIP prject like Tropo, Plivo, Twilio, Vitelity ... I also a web developer with strog skills in PHP, Python, Java, .Net ... I have used many frame work like Wordpress, Magento, Django, Codeigniter...  less

    asterisk python c++ django-framework openvbx freepbx opensips twilio-api tropo c php tcp-ip wordpress voip-software voip-administration 00 more less
    • $15.00 HOURLY RATE
    • 4.8
    • 307 HOURS
    • VIETNAM
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 4 TESTS
    GROUPS:
  • VoIP,SIP,Asterisk,FreeSwitch,Opensips,Kamailio, Linux,MySQL,PHP,Apache

    Over the last 3.5 years, I have developed a wide range of IT solutions including VoIP, Web and Mobile development for small businesses and startup companies as well as for large companies. I have experience in VoIP, FreeSwitch, Opensips … more

    Over the last 3.5 years, I have developed a wide range of IT solutions including VoIP, Web and Mobile development for small businesses and startup companies as well as for large companies. I have experience in VoIP, FreeSwitch, Opensips, Kamailio, Asterisk, FreePBX, A2billing, Linux, Opensource Consulting, MySQL, PHP, Joomla, Android, asp.net-mvc, c#, .net-framwork etc. I have developed class4-class5 Soft Switches, SIP Proxy, FAX Servers, Fax2mail, Fax over IP, Messaging Servers, Session Border Controllers, IVR application, Web Applications and many others. My core competency lies in complete end to end IT solutions for VoIP, Web and Mobile technologies.  less

    voip-administration sip opensips asterisk freeswitch voip-software php radius android-app-development joomla mysql phpmyadmin website-development html html5 javascript jquery css css3 asp asp.net asp.net-mvc c# .net-framework 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 755 HOURS
    • INDIA
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 6 TESTS
  • Asterisk/voip/a2billing/freepbx/kamailio expert

    My time is my value. So when you choosing me you can expect that job will be done in short terms and perfect. I not like to do something that not need be done, i prefer use developed components and … more

    My time is my value. So when you choosing me you can expect that job will be done in short terms and perfect. I not like to do something that not need be done, i prefer use developed components and solutions. That not mean i can't do development. I working with different programing tasks for last 26 years. yes, from 6 y.o. I live in it. So i prefer do something new&interesting; I can handle all tasks from linux administration/virtualization upto end-user web for voip. Only task i never do - graphical design part. That is not my field, better hire someone else for design. I have university degree, working with asterisk from start of this project. Have developing experience with freepbx/trixbox&a2billing. I am one of contributor of a2billing.org trunk. Also i can work as mysql/postgres DBA, database architect, has experience with following languages: Perl Python PHP C/C++ Javascript SQL Prolog/Lisp,Forth. In voip i can work with callweaver, asterisk, opensips, kamailio. Developed modules for freepbx, elastix, trixbox, a2billing.  less

    asterisk opensips a2billing freepbx virtualization linux-system-administration sql amazon-ec2 mysql sip trixbox elastix perl c++ python php css html xml windows-administration postgresql paypal-integration centos openvz xen-hypervisor 00 more less
    • $67.77 HOURLY RATE
    • 5.0
    • 444 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 6 TESTS
    ASSOCIATED WITH:
  • VOIP and Open Source Professional

    Asterisk/Kamailio/Elastix/FreePBX/Trixbox/Vicidial Professional. Worked on numerous projects on open source deployments like asterisk / kamailio (openser) based voip solutions, networking solutions like firewalls, utms, routers ( cisco/juniper) configuration with vlans, mail servers, web servers in the past … more

    Asterisk/Kamailio/Elastix/FreePBX/Trixbox/Vicidial Professional. Worked on numerous projects on open source deployments like asterisk / kamailio (openser) based voip solutions, networking solutions like firewalls, utms, routers ( cisco/juniper) configuration with vlans, mail servers, web servers in the past 7 years. Apart from this worked on joomla components, opencart customisations/ deployments, Emailer softwares like Interspire, Amazon Web Services, etc. Other work areas are Network designing/troubleshooting/security using open source tools like iptables/iproute for bandwidth management/ firewalling, vpn solutions like openvpn, ipsec tunnels, pptp vpn deployments.  less

    linux-system-administration mail-server-implementation openvpn firewalls joomla amazon-web-services email-marketing asterisk freepbx vicidial opensips network-administration cisco-routers 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 17 HOURS
    • INDIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 4 TESTS
  • Delphi,Web.NET, PHP, RoR, C/C++, Android, IOS, VoIp, OpenCV

    - I am programmer with over 15 years experience work in area IT software, Web development and Security network (All platform OS Window/Linux/MacOSX) - I am strong coding with languages programming (C/C++, Objective C, Java, Delphi/Pascal, Php/Perl … more

    - I am programmer with over 15 years experience work in area IT software, Web development and Security network (All platform OS Window/Linux/MacOSX) - I am strong coding with languages programming (C/C++, Objective C, Java, Delphi/Pascal, Php/Perl/Python/Ruby, Javascript/Applescript/Shell script, C#/VB.NET. - Delphi Programming: (Component, RemoteObject, Fastreport, Report Builder, Raise report, dbExpress, dataSnap, network, Firemonkey, crossplatform IOS, MacOSX, Window) - GIT/SVN in tracking and manage source code - Developing and using well with frameworks, opensource from .net, WinSDK, Linux SDK, IOS SDK, Social API(facebook, google, dropbox..etc), OpenCV, Forge, Image Processing, DSP, OCR, gstream, phonegap, - Web developement: Php, ruby, python, perl, NodeJS. Framework: joomla, wordpress, yii, Zend, drupal, SugarCRM, vTigerCRM,,,..etc. - Mobile/Smart device and Embedded development: Android, Linux Embedded, IOS, Window Mobile Embedded, Window Phone - IDE and tools programming(Visual Studio, Delphi IDE - all version, eclipse, Qt Creator, Netbean - Database programming: MS SQL(2000,2008, 2012), MySQL, MongoDB, NoSQL, BigData, postgreSQL, Firebird, Oracle - VoIP development: Asterisk, Softphone, WebRTC, Freeswitch, OpenSips, Elastix, FreePBX, A2Billing, XMPP, OpenFire, Call Center I joined to developing and completed many large project. i will show to you all previous my works.  less

    c++ pascal java c# .net-framework delphi android-app-development sip php javascript ajax html xhtml xml wordpress joomla drupal prestashop asterisk iphone-app-development computer-networking opengl opengl-es website-development linq linq-to-sql windows-administration database-management data-analysis mysql sql postgresql firewalls oracle-database crystal-reports jquery mootools google-app-engine amazon-ec2 facebook-api amazon-web-services windows-phone-7-development ios-development windows-app-development linux-system-administration windows-phone opencv opensips freeswitch windows-azure mac-os-app-development objective-c 00 more less
    • $15.56 HOURLY RATE
    • 4.9
    • 4416 HOURS
    • VIETNAM
    • LAST ACTIVE
    • 9 PORTFOLIO ITEMS
    • 17 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • Software Engineer

    Design and implementation software for any kind of web applications with strong skills: php object oriented method for backend part (Symfony2 framework), database structure design for ORM, ODM like Doctrine2, RDBMS like PostgreSQL, MySQL, Document DB like MongoDB. A lot … more

    Design and implementation software for any kind of web applications with strong skills: php object oriented method for backend part (Symfony2 framework), database structure design for ORM, ODM like Doctrine2, RDBMS like PostgreSQL, MySQL, Document DB like MongoDB. A lot of experience in frontend software development on JavaScript with jQuery and Angular library. Use only Linux platform for development, prefer GIT as control version system. And more other skills in computer science like bash, perl scripts, java general purpose programming, VoIP technology and others. Clean code and self advance as higher target for me.  less

    php symfony jquery postgresql mysql html5 lamp-administration mongodb doctrine-orm css github opensips asterisk bash perl java 00 more less
    • $33.33 HOURLY RATE
    • 4.8
    • 609 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 5 TESTS
  • Voice over IP Developer

    - Design, implementation and deployment of VoIP services for various open source platforms including Asterisk, FreeSWITCH, and OpenSER. - Implementation of Database connection pooling using unixODBC and MySQL Proxy. - Call rate web service for Vopium SIP client applications using LAMP. - Design and … more

    - Design, implementation and deployment of VoIP services for various open source platforms including Asterisk, FreeSWITCH, and OpenSER. - Implementation of Database connection pooling using unixODBC and MySQL Proxy. - Call rate web service for Vopium SIP client applications using LAMP. - Design and implementation of High Availability Linux Cluster, providing Failover for SIP users. - Development and bug fixing of call routing and billing services using Asterisk and Perl AGI’s. - Inbound Call center setup using Asterisk. - OpenSER Stress Testing using SIPp and WinSIP for SIP and PSTN terminated calls. - Mutiple DB connection handling for AGI failover Skills: C/C++/ Asterisk/OpenSIPS/Freeswitch, PHP, Python, Perl, MySQL  less

    asterisk opensips freeswitch linux-system-administration perl python tcp-ip vicidial mysql a2billing 00 more less
    • $11.11 HOURLY RATE
    • 5.0
    • 0 HOURS
    • UNITED ARAB EMIRATES
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 3 TESTS
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