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OpenSIPS Job Cost Overview

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

Upwork OpenSIPS Jobs Completed Quarterly

On average, 5 OpenSIPS projects are completed every quarter on Upwork.

5

Time to Complete Upwork OpenSIPS Jobs

Time needed to complete a OpenSIPS project on Upwork.

Average OpenSIPS Freelancer Feedback Score

OpenSIPS Upwork freelancers typically receive a client rating of 4.85.

4.85
Last updated: August 1, 2015

Popular OpenSIPS Searches

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  1. Gohar A.

    Gohar A.

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

    Canada - Tests: 3 - Portfolio: 15

    Since last 8+ years 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 Designing and Development * Server Administration * Network Administration * Securing VoIP deployments * Expert at SIP and RTP diagnosis and troubleshooting I've experience in Following tools. * Asterisk * FreeSwitch * OpenSIPs * Kamailio * SEMS * Vyatta * MySQL * Linux OSs I've worked in following languages. * C++ * LUA * Perl * Php * Shell scripting Find More about Me from my VoIP Blog: http://saevolgo.blogspot.com

    $60.00 /hr
    152 hours
    4.99
  2. Yuriy N.

    Yuriy N. Agency Contractor

    Freeswitch/Asterisk/OpenSIPS/Kamailio/Linux/Network/VoIP Enthusiast

    Russia - Tests: 1 - Portfolio: 1

    Telecom Software and Network Engineer more than 6th years in companies - communication providers. I have extensive experience with deploying a complete infrastructure of voip provider, using OpenSource telephony technologies such as freeswitch, asterisk, OpenSIPS\Kamailio, kazoo, etc. Mostly I'm dealing with emerging startups or with small but accomplished voip companies which want to improve\reorganize their infrastructure; create something new or fix some issue on their network. So it is main area but sure I can help with other projects that correspond to my list of skills.

    Associated with: Nasida

    $40.00 /hr
    1,118 hours
    4.97
  3. Dmitry Sytchev

    Dmitry Sytchev

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

    Russia - Tests: 7 - Portfolio: 1

    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 integration of VoIP software with company information flows. You can rely on my strong engineering and programming skills for projects starting from single VoIP server to a complete wholesale/carrier VoIP solutions including billing, call data analysis, security and fraud prevention. I have developed complete SIP solutions for VoIP carriers worldwide: Proxy/Registrars, IVR, prepaid systems, multi-tenant VoIP switches, hardware PSTN gateways (Cisco AS5300/5500, Audiocodes Mediant 2000, Quintum Tenor). I have experience in setup, administration and security of Asterisk, FreePBX, Elastix and FreeSWITCH PBX installations. 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 also have experience in development and administration of MySQL and Microsoft SQL Server databases. I'm experienced network engineer, skilled in routing and switching, general network architecture planning and deployment, network monitoring and security, including HA solutions (heartbeat/pacemaker). I use Zabbix and have some experience with Nagios and other monitoring software. I can also offer you consulting support in VoIP and network technologies.

    $33.33 /hr
    93 hours
    4.95
  4. Luis Urrea

    Luis Urrea

    Telecom Engineer | VoIP Network Engineer | FreeSWITCH developer

    Costa Rica - Tests: 5

    I am a Telecom Engineer and Network Administrator with extensive experience in designing, implementing and maintaining mission critical network based systems. I worked for Cisco TAC for a little over 4 years providing high level technical support for Cisco Systems customers worldwide, diagnosing and resolving complex issues in small and large scale converged VoIP networks. My years of experience with multidisciplinary groups, and diverse network based equipment, using debugging tools and lab simulations have consistently trained my analytical skills and given me the required background to understand how systems work and therefore be able to provide solid recommendations and identify solutions that meet customer's needs. I am passionate about developing robust, scalable, distributable and fault tolerant communication systems and applications using the Erlang programming language. Programming proficiency in Erlang and Ruby.

    $38.89 /hr
    130 hours
    5.00
  5. mohammad kamruzzaman

    mohammad kamruzzaman Agency Contractor

    Full stack web developer and VoIP Engineer, FreeSWITCH, ASTPP,Kamailio

    Bangladesh - Tests: 2 - Portfolio: 2

    i am a full stack web developer and server administrator (FreeSWITCH) i have experiences on Django (python), Codeigniter (php), MongoDB, ElasticSearch, postgres, redis, rabbitMQ, celery, mysql, nodejs. you can hire me if you need to implement a distributed VoIP enabled service based on freeswitch/kamailio that is ready to scale. i am also doing newfies-dialer customization and maintenance for a long while. and also i will take projects like PBX, IVR, autodialer development. i have open source project customization experiences, for example, FusionPBX,Newifes-dialer,Astpp,vBilling,kazoo, Kannel

    Groups: Twilio

    Associated with: DT software house

    $44.00 /hr
    2,886 hours
    4.68
  6. Arsen S.

    Arsen S.

    VoIP Administration & Development

    Bulgaria - Tests: 2 - Portfolio: 6

    I am focused in VoIP field only and I have been working here for more than 8 years. My Area of experiences: VoIP -Asterisk PBX: Full proficiency -FreeSWITCH: Full proficiency -Yate: Full proficiency -Strong knowlege of SIP protocol and SIP routers/proxy servers -OpenSER (Kamailio/OpenSips) -Load Balancing, Least Cost Routing, High Availability, NAT Traversal, Rate and billing systems, etc. -IVR and Auto Attendant Development -Secure VoIP: TLS, SRTP, ZRTP Full proficiency in free Billing/CDR 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) -cgRates (billing for Freeswitch) I provide: - Development of custom Billing and software solutions for Premium Rate Numbers business. - HA and Scalability solutions for existing VoIP networks. - Development and optimisation of VoIP networks/projects. - Ongoing support via request/ticket tracker system. - VoIP Security and Hacker protection solutions. I have successfully completed large amount of commercial installations of VoIP PBX servers. From SOHO to Enterprise deployment including integration of various VoIP solutions into existing network environment. I also have experience in building of secure "bastion" VoIP/Linux servers. Payment Terms: Minimal support package 5 hours. Short-term hourly support: $50 For long-term support please contact for price options. For sizable development projects please contact for price options. We charge upfront scoping (roadmapping meeting, flat-rate). Hourly based projects: -Current hourly rate is $50. Price per projects/feature: -Fixed price projects are calculated based on the hourly rate and expected task complexity. -For all fixed price projects complete project specification with clear tasks description is required -For all fix price projects work will be started only after payment has been es-crowed and both parties have agreed with working terms.

    $55.56 /hr
    183 hours
    4.54
  7. Aleksandr Ryzhov

    Aleksandr Ryzhov

    Software Engineer

    Ukraine - Tests: 6 - Portfolio: 8

    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.

    $22.22 /hr
    691 hours
    4.82
  8. George M.

    George M.

    Expert in VOIP, expierenced in Asterisk,webrtc2sip,sipml5, MVTS,jquery

    Ukraine - Tests: 6 - Portfolio: 9

    My web site is: www.a4business.com I am creating turn-key VOIP platforms for online bussines with WEB-site, different billings, rates setup, VOIP dialers, mobile dialers, DIDx provider integration, paypal online payments for Calling card business, DID and other. I have experience in Asterisk, Sysmaster/VoiceMaster brands (http://sysmaster.com). Demo: www.norfa.com, ( ask me for test PIN ) My video lessons: https://vimeo.com/user36231282/videos Also, I had big expierence with Nextone(, Asterisk, freeswitch, iTelBilling, iTelByteSaver, iTelSwitch, Billbery, Alepo, MVTS, a2billing, freepbx, opensips, kamalio, PHP programming (php-agi, css, jquery), Linux advanced administration, kernel, bash, perl, SQL database architecture: Mysql, MSSQL, Sybase, SQLite, PostgreSQL, Cacti, MRTG, RRD, WHMCS customization, system Backup/Restore schemes. Also I install everything which is needed for business - mail exchange servers (Zimbra, Zarafa, Roundcube Webmail), Ticketing CMS (WHMCS) and write custom modules for each.

    $25.00 /hr
    8 hours
    4.99