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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. George M.

    George M.

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

    Ukraine - Last active: 9 hours ago - 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
    6 hours
    4.99
  2. Abdelghafour H.

    Abdelghafour H. Agency Contractor

    Network and Software developer

    Morocco - Last active: 7 days ago - Tests: 4

    I'm a network, software developer, I have consequent experience in LAN/WAN protocol's configuration (Cisco, OneAccess) and development, I worked also on setting up and configuring IPTV and VoIP platforms, I developed many WEB architecture using J2EE, Ruby On Rails and Python Django technologies. My goals through oDesk is to create a trust based network of clients with whom, I can have a long term relationship developing solutions that best suit their needs.

    Associated with: Teliteck

    $33.33 /hr
    1,068 hours
    5.00
  3. r g

    r g

    Technical Architect Java, J2EE, SIP Web RTC

    United States - Last active: 6 months ago - Tests: 2

    Over the last 12 years, I have worked extensively on Java/J2ee projects for prestigious clients in telecom and banking domain My passion towards the designing, programming and coding, lead me to the Odesk , a platform where I can put my knowledge, experience, passion together and deliver my best in professional and timely manner My core expertise lies in : Java/J2ee LinkedIn, Highrise, Foursquare API Integration OAuth Intergration SIP WebRTC BigBluebutton red5, freeswitch, Big Blue Button Type safe stack (Play!, Akka, Cassandra) Twitter Bootstrap Weblogic / Websphere Web Solutions (JSP/Struts/Servlets/XML/Web Services/JavaScript/HTML5) Android Development Coding Standards and Best Practices

    $38.89 /hr
    520 hours
    4.90
  4. Sergey P.

    Sergey P.

    VoIP and Linux Engineer

    Russia - Last active: 2 days ago - Tests: 5

    OS: linux (gentoo, debian, centos ...), FreeBSD over 10 years using/administration Lang: perl, lua, shell (java, ruby, erlang studying) VoIP: asterisk, freeswitch, gnugk, kamailio/ser (over 7 year administration) PBX: Si2000 (v.5), Definity administration (SS7, ISDN) DB: mysql, postgresql Sec: DMVPN, IPsec, OpenVPN Publish: LaTeX

    $22.22 /hr
    74 hours
    5.00
  5. Arsen S.

    Arsen S.

    VoIP Administration & Development

    Bulgaria - Last active: 6 days ago - 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
    175 hours
    4.54
  6. Igor Pavlov

    Igor Pavlov

    Russia - Last active: 4 months ago - Tests: 3

    Hi, My name is Igor Pavlov. I am working with VoIP technologies since 2008. From 2013, I'm partially working in cloud PBX project (developing core based on OpenSIPS with load-balancing between asterisks). I have a Bachelors in Radio Engineering from Izhevsk State Technical University, in Russia. Listed below are my experience and skills: - Kamailio/OpenSIPS: rtpproxy, dispatcher, dialog, htable, auth_db; - Asterisk: AGI (php, bash), AEL, AMI, CDR, DB (MySQL), faxes (fax2mail), IVR, SIP/IAX/E1(EDSS), dahdi; - GUI: FreePBX, Trixbox, Elastix; - OS: Debian, CentOS; - Linux Administration: firewall, routing, vpn; - Cisco Switches and Routers configuration (CCNA level); Thank you in advance for your time and consideration.

    $20.00 /hr
    9 hours
    5.00
  7. Kundan S.

    Kundan S.

    System/Network Engineer

    Nepal - Last active: 2 days ago - Tests: 4 - Portfolio: 1

    I have been doing the system/network administration for last 6 years. My core area of work involves setup, maintain and troubleshoot system and network administration. I had successfully implemented and troubleshoot various system and network administration. My work platform includes (but not limited to ) Microsoft, Cisco, VMware, Citrix, Linux, IBM, SAN, Veritas etc. Below are the services which i have been providing to the organizations Microsoft platform : Active directory on w2k/w2k3/w2k8. IIS 6/7 web server/application server/file server/ smtp component for relaying. Certificate services as PKI in w2k/w2k3/s2k8. Visual SVN as subversioning and repository. Exchange 2003/2007/2010 and MDaemon for messaging solutions. WSUS, RDS, Terminal Services, Hyper-V DNS, DHCP, RRAS, Network Policy services. IPSec services PPTP and L2TP VPN Server. Kernel Debugging with Microsoft Debugger and kd tools SQL server 2008 Database administration. VBscripting for standalone and Active Directory environment. Linux services: LDAP with and without samba server. Qmail, postfix, Exim and sendmail as message transfer agent. Dovecot and courier as IMAP and POP3 server. smtp-auth, spamassasin, SPF with linux MTAs. Apache as webserver, apache and git as version control server . ssh server with and without password (with certificates and passphrase). VNC , screen as terminal services. oracle, mysql and postgresql on linux/unix. IPsec site to site and ssl vpn using freeswan, openswan and racoon. linux as firewall gateway using bash/perl gateway along with iptables, psad, and snort. bandwidth shaping policing services using htb and tcng. Voice server based on sip with h.323 support based on asterisk (trixbox, elastix, go-autodial ) with vicidial. quagga/zebra as advanced routing solutions. squid 2/3 cpanel/whm Amanda/zamanda/Bakula/rsync for backup services TCP Wrappers for hardening linux security. ext3/ext4/JFS on linux. puppet as configuration management. clonezilla. Debugging linux problems with signal trapping using bash scripts Networking : OSPF,EIGRP,RIP,BGP routing on cisco, juniper and open source in linux. Acess lists on cisco routers and security appliances (pix/asa). static and Dynamic NAT on cisco, juniper and open source linux/unix. L3 routing in cisco switches. SCCP/SIP in cisco CME, and call manager. INter vlan routing, site to site vpn, PPP/HDLC wan protocols, route summarization, equal/non equal cost load balancing. server virtualization on openvz, proxmox VE, KVM, XEN, citrix, vmware etc. desktop virtualization using citrix xendesktop and vmware view. App virtualization using citrix xenapp and vmware thinapp. user virtualization using citrix profile unity and appsense environment manager. ISCSI and Fiber channel based storage. IBM infosphere guardium for database security and data compliance CA identity minder and site minder. ...

    $11.11 /hr
    27 hours
    0.00
  8. Beenish Saleemi

    Beenish Saleemi

    VoIP/IMS ,BPM/, RIA Application Developer

    Pakistan - Last active: 4 days ago - Tests: 7 - Portfolio: 2

    I am a professional services provider, I have expertise in BPM based enterprise web2.0 solutions. My expertise varies from small enterprise products design to most scalable highly available solutions. having past 7 year experience in enterprise wide products, developing solutions and as a architect level performance.I have good grip for designing advance technology solutions for complex problems. Also have expertise in Java,.net C#, Perl, PHP and javascript and have experience in following protocols: SIP, Diameter, RADIUS, XMPP. industry standard BPMN2.0. I can add up enterprise level solutions to product to add in latest solutions. Opensouce projects : JBPM, JBOSS FUSE, Mobicents Jainslee, Asterisk, opensips, freeradius, Kurento WebRTC server, openfire etc. I can offer the services from small project to enterprise level project.

    $10.00 /hr
    1 hours
    0.00
  9. Nguyen Tran Nhan

    Nguyen Tran Nhan Agency Contractor

    senior developer c/c++, android embeded, linux kernel.

    Vietnam - Last active: 1 month ago - Tests: 4 - Portfolio: 1

    With more than 5 years working experience in Software Development and most of the time working with C,C++ technologies, I have gained a certain professionalism level as a Senior C,C++ Developer: • Intensive programming experience using STL: container, algorithm, iterator, smartpointer. BOOST: regex, filesystem, boost::bind, boost::datetime, QT, GTK, … • Strong skill set and experience using open sources frameworks: STLport, Xerces, Santuario, CryptoPP, Xalan, CURL, Pjsip, OpenMGCP, Quagga, OPENSNMP, • Good skills and experience in protocol and reading RFC like, SIP, MGCP, RTP, RTCP, XMPP, SNMP, … • Good skills and experience in programming with posix, multithreading, mutex, condition variable, thread barrier, … • Good skills with programming in linux kernel. Development linux module, netfilter, … • Good skills and experience in system analysis, system designing and performance tuning • Strong skill set and experience using development tools: VIM, ctags, cscope, VISUAL STUDIO, Eclipse, Makefile • Strong skill in VOIP, SIP, XMPP, MGCP, jabberd2, MEGACO, • Good experience with native SDK Blackberry, Native SDK Android. • Good experience in working and managing application and web servers: Apache, Tomcat. Experience in developing Apache module. • Good experience in working with databases: Oracle, MS SQL, My SQL, SQLITE

    Associated with: nccsoft

    $16.67 /hr
    574 hours
    2.84