SIP Freelancers

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SIP Job Cost Overview

Typical total cost of Upwork SIP projects based on completed and fixed-price jobs.

Upwork SIP Jobs Completed Quarterly

On average, 34 SIP projects are completed every quarter on Upwork.

34

Time to Complete Upwork SIP Jobs

Time needed to complete a SIP project on Upwork.

Average SIP Freelancer Feedback Score

SIP Upwork freelancers typically receive a client rating of 4.50.

4.50
Last updated: May 1, 2015

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  1. Kirill P.

    Kirill P.

    Asterisk Expert and System Administrator

    Russia - Last active: 8 days ago - Tests: 10

    I work on IT more than 12 years. VOIP/Asterisk Developer, Expert System Administrator and Network Administrator, Perl Programmer. Generally, I develop solutions based on Asterisk and speech technologies (speech synthesis and speech recognition systems), complex IVRs, integration with external sources and databases, custom click-to-call and callback systems, etc. I prefer custom development for Asterisk and FreeSWITCH. Usually, I use Perl for development. I have huge experience in solutions based on Asterisk such as FreePBX, Elastix, Trixbox, vicidial, etc. Also I support critical 24x7 systems, administration networks and servers, perform IT consulting, etc.

    $25.00 /hr
    10 hours
    5.00
  2. Suren Karapetyan

    Suren Karapetyan

    Senior System/Network Administrator (devops)

    Armenia - Last active: 1 day ago - Tests: 8

    An ambitious *nix System and Network Administrator with eight years' experience working in ISPs and other service providers maintaining existing and designing new infrastructure. DevOps skills which help to bridge sysadmins' and developers' teams. Master's degree in Math Sciences. I'm looking for interesting projects which use new/young technologies and provide new challenges. Would also be great to work with interesting people.

    $35.56 /hr
    825 hours
    4.91
  3. Gohar A.

    Gohar A.

    VoIP Consultant [Asterisk, freeSWITCH, Kamailio, OpenSIPs, Vyatta]

    Canada - Last active: 2 months ago - Tests: 3 - Portfolio: 15

    Since last 7 years now I'm involved intensely in end-to-end VoIP setups. That included pre-deployment 360 degree Architecture planning. Actual development of the projects, including aiding other teams develop the exact required component for the projects. And after deployment Support. My career objectives are to be a very flexible expert capable of working on almost any layer. Come up with intelligent solutions to help achieve business goals smartly. I'm proficient in following domains * VoIP * Server Administration * Network Administration I've experience in Following tools. * Asterisk * FreeSwitch * OpenSIPs * Kamailio * SEMS * Vyatta * MySQL * Linux OSs I've worked in following languages. * C++ * Perl * Php * Shell scripting Find More about Me from my VoIP Blog: http://saevolgo.blogspot.com

    $60.00 /hr
    152 hours
    4.99
  4. Jack B.

    Jack B.

    Asterisk/VOIP/Vicidial/FreePBX/Elastix Expert | Technical Support

    Philippines - Last active: 2 days ago - Tests: 1

    Over the past 6 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 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, GoAutodial, Vicibox, FreePBX, Elastix, Linux, SIP, IPPBX and PABX/CUCM integration, VOIP systems and GSM gateway systems. Installing and maintaining VOIP and call center systems remotely to my clients in the US, Singapore, Philippines, China, UK and Middle East has also helped me improved my skills and the way I deal with people especially in interacting and communicating with top management or owners of the business. With this, I'm seeking opportunities to install, develop, configure and support call center systems, VOIP systems and IPPBX systems from the ground up for you or your business. I have also experience in the following areas: - MySQL and Apache - Linux(CentOS, Redhat, Ubuntu, Opensuse, Fedora) and Windows Operating Systems - Microsoft Office applications - 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 and linux/shell scripting - Softphones(Eyebeam, Bria Xlite Zoiper and Ekiga) configuration - IP Phones(Mitel, Polycom, Escene, Grandstream, Yealink, etc) configuration - Video Phones(Grandstream, Yealink, etc) configuration - Operator phone configuration - FXO/FXS gateway configuration - VOIP gateways(Dinstar, Grandstream, Audiocodes, Quintum Tenor, Digium) configuration - Sangoma/Digium/Atcom/Openvox card configuration(TDM/Analog, E1, E1R2, PRI/BRI, ISDN) - Multi-tenant IPPBX

    $33.33 /hr
    51 hours
    4.89
  5. Ambika P.

    Ambika P.

    VoIP,SIP,Asterisk,FreeSwitch,Opensips,Kamailio, Linux,MySQL,PHP,Apache

    India - Last active: 2 days ago - Tests: 6 - Portfolio: 3

    Over the last 4.5 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.

    $25.00 /hr
    1,502 hours
    4.58
  6. Md. Shamim Shaharier

    Md. Shamim Shaharier

    Bangladesh - Last active: 2 days ago - Tests: 2 - Portfolio: 8

    Asterisk, Freeswitch, vicidial,A2billing, Free pbx, elastix, PRI & PSTN card installation, call centre setup, Advanced IVR, Vmwire Esx, web-meetme ,Cloud solution using asterisk, training on asterisk, voice broadcast etc Installation Expertises in Asterisk, Freeswitch, vicidial, web -meetme, A2billing, Free PBX, Elastix,vmwire esx etc. IVR specialist in asterisk Advanced Dialplan in asterisk,asterisk realtime etc. Useful and cost-effective phone management system planning & designing & installation Expertises in Digium, Sangoma, Openvox ,grandstream FXO/FXS,Dinstar GSM gateway/FXO/FXS,and other type of PRI & PSTN Card installation. Connecting Multiple Asterisk Server & Cloud Solution for asterisk Call centre setup using vicidial,goautodial. Advanced Voice broadcast system Training on Asterisk,vicidial,elastix .

    $15.00 /hr
    36 hours
    4.94
  7. Alexey A.

    Alexey A.

    Erlang/Web/NoSQL developer

    Russia - Last active: 1 day ago - Tests: 1

    More than 20 years of Telecom/GUI/Embedded/Web programming experience. Main languages: Erlang, Js, C, Python Extra languages: Lua, PHP, TCL, Perl. Erlang skills: OTP, RabbitMQ, Ejabberd/MongooseIM, ChicagoBoss, Zotonic, Nitrogen, Cowboy, Riak, CouchDB, Erlyvideo/Flussonic, Tsung, Common Test, PropEr

    $44.33 /hr
    3,349 hours
    4.86