SIP Freelancers

Showing 53 freelancers

SIP Freelancers

Showing 53 freelancers

  • VoIP and Linux Engineer

    Hi. I'm a VoIP engineer, mostly using Asterisk and FreeSwitch. Later time have much expirience in OpenSIPS/Kamailio SIP Proxy family products. Also have a huge expirience in traditional telephony, also Video-Conferencing systems (Polycom, Tandberg). Excellence knowlege of SIP … more

    Hi. I'm a VoIP engineer, mostly using Asterisk and FreeSwitch. Later time have much expirience in OpenSIPS/Kamailio SIP Proxy family products. Also have a huge expirience in traditional telephony, also Video-Conferencing systems (Polycom, Tandberg). Excellence knowlege of SIP/H.323 and IP networking.  less

    asterisk sip network-administration 00 more less
    • $30.00 HOURLY RATE
    • 4.5
    • 24 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
  • Asterisk/Vicidial/FreePBX/Elastix Expert | Technical Support

    Over the past 4 years, I have installed and configured a total of around 1,000 seats call center system with a maximum of 14 servers on one site using Vicidial on both standalone and multi-server setup. I have also … more

    Over the past 4 years, I have installed and configured a total of around 1,000 seats call center system with a maximum of 14 servers on one site using Vicidial on both standalone and multi-server setup. I have also also installed and configured IPPBX systems, VOIP systems, GSM gateway systems and asterisk-based systems using FreePBX and Elastix ranging from small to medium business enterprises including integration of IPPBX to a legacy PBX(PABX) and to CUCM. My core competencies lies in Asterisk, Vicidial, FreePBX, Elastix, Linux, SIP, IPPBX and PABX/CUCM integration, VOIP systems and GSM gateway systems. And I'm seeking opportunities to install, develop, configure and support call center systems and IPPBX systems from the ground up for you or your business. I have also experience in the following areas: MySQL, Windows Operating Systems, Microsoft Office applications, Apache, Basic to advance TCP/IP networking configuration, Basic to advance troubleshooting(system, software, hardware and networking), SDLC, UML Diagrams and OOP diagrams, FTP, remote desktop support, firewall, linux/shell scripting, Softphone(Eyebeam and Xlite) configuration, IP Phone(Polycom, Escene, Grandstream, Yealink, etc) configuration, Video Phone(Grandstream, Yealink, etc) configuration, Operator phone configuration, FXO/FXS gateway configuration and Sangoma/Digium/Atcom/Openvox card configuration(TDM/Analog, E1, E1R2, PRI/BRI).  less

    asterisk vicidial freepbx linux-system-administration sip mysql apache-administration 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 37 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 1 TEST
  • VoIP PBX and Lync design and administration. Contract Center

    15+ years of Call Center and IT experience. Engineering and project management on Avaya 8700, 8300, G3, Gsi platforms, all Avaya remote gateways, as well as ISDN and SIP trunking with various carriers. Non-Avaya PBX experience also includes Cisco and … more

    15+ years of Call Center and IT experience. Engineering and project management on Avaya 8700, 8300, G3, Gsi platforms, all Avaya remote gateways, as well as ISDN and SIP trunking with various carriers. Non-Avaya PBX experience also includes Cisco and Asterisk, as well as Audiocodes media gateways and SBAs, as well as AcmePacket SBCs. Architecture, deployment and maintenance of Microsoft OCS 2007 R2 and Lync infrastructures. Strong focus placed on root cause analysis, incident documentation and effective end user communication in adherence to ITIL V3 standards.  less

    avaya asterisk microsoft-lync-server sip voip-software voip-administration 00 more less
    • $55.56 HOURLY RATE
    • 5.0
    • 3 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 TESTS
  • VoIP Expert / IP-PBX Specialist / Computer Networks / Linux

    A man interested in all things Computer and Data/Voice Networks related. Also a Linux and Virtualization enthusiast :) A strong supporter of Richard Stallman and Open Source software movement! You can visit and view my thoughts on: http://myciscojournal.blogspot … more

    A man interested in all things Computer and Data/Voice Networks related. Also a Linux and Virtualization enthusiast :) A strong supporter of Richard Stallman and Open Source software movement! You can visit and view my thoughts on: http://myciscojournal.blogspot.com Some Areas of my expertise: VoIP: -Genband Nextone - Expert -Sonus and NBS Solution - Expert -MVTS Pro and MVTS II - Expert -Acme Packet - Sound proficiency -Asterisk PBX: Full proficiency -Strong knowledge of SIP protocol and SIP routers/proxy servers/SS7 -OpenSER (Kamailio/OpenSips) -Load Balancing, Least Cost Routing, High Availability, NAT Traversal, Rate and billing systems, etc. -IVRs/Auto Attendant Development. -Wireshark - Expert Cisco Routing and Switching technologies. Centos/Fedora/Red Hat Enterprise Linux Various Billing solutions: -A2Billing: Full proficiency (configuration from scratch, customisation) -CDRTool (prepaid billing/accounting and sip tracing for OpenSIPS using RADIUS) -CDR-Stats (call detailed statistic/realtime stat for asterisk and freeswitch) - vBilling (billing for Freeswitch) Above all, a passionate technical writer, who enjoys writing down great tutorials in his free time :)  less

    cisco-routers cisco-voip sip linux-system-administration vicidial elastix trixbox a2billing freepbx asterisk 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 1181 HOURS
    • MALAYSIA
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 5 TESTS
    ASSOCIATED WITH:
  • Programmer (C/C++, Android (SDK, NDK), Java/J2ME/J2EE, Mobile VoIP)

    To help my clients meet their creative objectives relying on my sound software engineering and programming experience. I create consistent yet flexible software that stands out. I have 6+ year experience of software engineering and programming. I have good command over C/C++, Java, Android and other related technologies.

    android-app-development c java c++ uml opengl-es sip sql assembly-language mysql 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 125 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 9 TESTS
  • 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
  • Software Engineer.

    I have extensive experience developing Software using Delphi,C#,C++, JAVA, PHP, MS SQL and MySQL. I also have many years of experience developing desktop applications with C/Win32, C++/MFC, COM, C#, VB 6.0, and VB.NET. I … more

    I have extensive experience developing Software using Delphi,C#,C++, JAVA, PHP, MS SQL and MySQL. I also have many years of experience developing desktop applications with C/Win32, C++/MFC, COM, C#, VB 6.0, and VB.NET. I am seeking new opportunities to create software application from scratch or to add advanced functionality to pre-existing softwares. I'm also interested in creating desktop and mobile applications in any language that your project requires. Various .NET related skills include: WCF, WPF, Workflow Foundation, MVC, ADO.NET Entity Framework, LINQ, LINQ to SQL, LINQ to XML, COM and Win32 interoperability. C++ skills: STL, templates, data structures, analysis of algorithms, interprocess communications, multithreading and parallelism with Windows Threads, Intel Threading Building Blocks and network programming with WinSock using TCP/IP and UDP. Mobile skills: Development of Windows and Android phone apps. Enterprise services development skills: asynchronous order processing with MSMQ and Windows Services, distributed transactions. Management/Finance Skills: Accounting, Inventory, Trading, Microsoft Navision, Metatrader 4, mql4 Miscellaneous skills: AJAX, jQuery, SVN, CVS, Git, Security/Hacking .. Preferred OS: Unix, OpenSource Mind .. Hobbies & Research : Automatism, Robotics, NAO, NXT 2.0 , V-REP, OpenCV ..  less

    c# .net-framework linux-system-administration java php perl delphi c++ microsoft-dynamics eclipse microsoft-visual-studio embedded-systems tcp-ip mysql network-security drupal elgg ffmpeg android-app-development html css ajax jquery javascript robotics opencv sip facebook-api twitter-api skype-development linkedin-api uml agile-software-development svn cvs git multithreaded-programming socket-programming mql4 sql 00 more less
    • $22.22 HOURLY RATE
    • 4.9
    • 111 HOURS
    • GERMANY
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 4 TESTS
    GROUPS:
  • Web Developer - OpenCart/WordPresss/PHP/MySql/Responsive/eCommerce

    Do you want to hire a real 9+ years skilled E-Commerce Professional? [OPEN CART PROFESSIONAL] <ASK ANYTHING YOU LIKE FOR YOUR STORE. I WILL BUILD THAT FOR YOU !!!!> My skills and experiences are following 1) - OpenCart, WordPress, OsCommerce, X-Cart, 3d … more

    Do you want to hire a real 9+ years skilled E-Commerce Professional? [OPEN CART PROFESSIONAL] <ASK ANYTHING YOU LIKE FOR YOUR STORE. I WILL BUILD THAT FOR YOU !!!!> My skills and experiences are following 1) - OpenCart, WordPress, OsCommerce, X-Cart, 3d Cart etc. - Web Service, Ajax, XML, JSON, RSS - MySQL, HTML, HTML5, PHP, JSP, CSS, java script, jQuery <--Top Quailty and Tight Deadline is my main personality in Developing.--> <However, If for any reason you are not pleased with my product then I will be happy to refund full money from you> ----I Love the Software World------ Dear Hiring Manager Thank you for taking the time to look at my resume. I am an Honest young programmer, I am from Bangldesh. I think when you are outsourcing for a contractor to complete your project, trust is very important, without trust, you have nothing. If you are looking for a reliable contractor to finish your project on time, then look no further, you have found the right person. --------------------------------------------------------------------------------------------------- If U have chance to work with me then U will not leave me Forever.. -------Client Satisfy Perfectly -------Top Quality -------I do not exceed agreed budget. -------I do not exceed deadline.. -------Fantasty UI Design and Perfect and skilled Coding. I will always make best effort to satisfy clients requirements. I will always provide best result for clients. Best Regards.  less

    opencart oscommerce wordpress wp-ecommerce mysql psd-to-html html css jquery javascript network-administration computer-networking windows-administration java windows-xp-administration cisco-routers adobe-acrobat adobe-photoshop sip adobe-flash microsoft-visual-basic dhcp seo x-cart bigcommerce css3 html5 c c++ ajax core-java netbeans php phpfox cakephp phpmyadmin phpnuke phpbb 00 more less
    • $8.89 HOURLY RATE
    • 4.8
    • 1196 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 40 PORTFOLIO ITEMS
    • 8 TESTS
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