SIP Freelancers

Showing 18 freelancers

SIP Freelancers

Showing 18 freelancers

  • 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
    • 32 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 1 TEST
  • 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
    • $11.11 HOURLY RATE
    • 5.0
    • 1139 HOURS
    • MALAYSIA
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 5 TESTS
    ASSOCIATED WITH:
  • Independent Multimedia, Communications and Marketing Consultant

    Resourceful, Cooperative, Technology Orientated Multitasker and Motivated Self Starter with a Vast Amount of Customer Service, Sales and Technical Support Environment in a Call Centre (10+ Years) Setting and in Person. A Leadership Role Building and Maintaining a Strong, Loyal … more

    Resourceful, Cooperative, Technology Orientated Multitasker and Motivated Self Starter with a Vast Amount of Customer Service, Sales and Technical Support Environment in a Call Centre (10+ Years) Setting and in Person. A Leadership Role Building and Maintaining a Strong, Loyal, Satisfied and Educated Customer Base. Acquired Unique Skills Dealing with People from a Variety of Cultural Backgrounds, Range of Ages and Diversity Needs. Languages: English (Native), Greek (Fluent) and Spanish (Beginner) Skill Strengths Organized and Innovative Approaches to Tasks Efficient & Productive Service with Quality & Measurable Outcomes Ambitious and Open Minded - Can Do Attitude, with a Smile! Understanding Internal/External Customer/Business Requests/Needs Evaluating Information and Providing - Best Fit Solutions Informing Clients about Additional Value Added and Benefits by Up & Cross Selling Products and/or Services Educating Clients about Alternative Time Saving Channels of Service/Information Promoting Our Brand Name and Business and/or Industry Troubleshooting and Problem Solving Instilling Confidence to Clients Proactive Attention to Details and Excellent Photographic Memory Well Developed Technological Knowledge, Processes and Practices.  less

    web-design sales social-media-marketing database-management telemarketing brand-consulting sip 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 9 HOURS
    • CANADA
    • LAST ACTIVE
    • 18 PORTFOLIO ITEMS
    • 10 TESTS
  • iOS (iPhone, iPad) and Mac OS X Developer and UI/UX designer

    I'm an Objective-C developer. I work with iOS and Mac OS X. Moreover I do UI/UX design, and always make my apps beautiful. Besides I can make an iOS, or Mac device work together with an arduino powered … more

    I'm an Objective-C developer. I work with iOS and Mac OS X. Moreover I do UI/UX design, and always make my apps beautiful. Besides I can make an iOS, or Mac device work together with an arduino powered machine, what has variety of different applications such as iPhone remote-controlled garage gates etc.  less

    ios-development iphone-app-development objective-c mac-os-app-development arduino sip mobile-app-development 00 more less
    • $33.33 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 7 HOURS
    • POLAND
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 0 TESTS
  • Systems Administrator; Windows,Linux,Cisco,Asterisk,VMware,Security

    Systems Admin; Windows,Linux,Cisco,Asterisk,VMware,Security I have extensive experience in deploying, configuring and troubleshooting production; Windows Servers 3+ years, Linux Servers 4+ years, Cisco routers 2+ years, VMware ESX/ESXi 1+ years, Oracle Virtualbox headless 1+ years … more

    Systems Admin; Windows,Linux,Cisco,Asterisk,VMware,Security I have extensive experience in deploying, configuring and troubleshooting production; Windows Servers 3+ years, Linux Servers 4+ years, Cisco routers 2+ years, VMware ESX/ESXi 1+ years, Oracle Virtualbox headless 1+ years. Windows Servers– 2003, 2008, 2008R2, SBS2008, SBS2011 Windows Applications – Active Directory, Exchange, Group Policy, Terminal Services (RDS), RDP, VPN, MSSQL, Firewall, WSUS, Tomcat, FTP, SMB/CIFS, SSL/TLS certs, AV Server, NTP, DNS Linux/Unix Servers – Centos5/6, Scientific, Clearos, Pfsense, VMware ESXi, Debian (not production), Ubuntu (not production) Linux/Unix Applications – Apache, Tomcat, LDAP, Samba, Openfire, Asterisk/VOIP, FTP, VPN, Postfix, Horde, Proxy, soft RAID, MySQL, Redmine, Cpanel WHM, BIND, openssl, IPtables, Fail2ban, Curl, Snort, openSSH, VLAN, TFTP, OpenVAS, Nmap, Truecrypt Cisco Routers – 1800 Series (1841 etc) Cisco Applications – NAT, PAT, QoS, ACL, SSH, VLAN VOIP IP phones – Polycom, Cisco, Linksys, Yealink, Grandstream Monitoring Applications – GFI MAX, Solar Winds Backup Applications – Veeam, Norton Ghost, Backup Assist, iDrive, Allwaysync Some of the tools i use: RDP, putty, openssh, openpgp, telnet, secureCRT, SDM, scp, winscp, wireshark, tcp dump, teamviewer, logmein, openvpn I enjoy problem solving tough issues and crave challenging roles to apply my persistent (don't give up) attitude. I get immense satisfaction upon solving difficult problems. I continue to seek new knowledge in all things hardware and software related but particularly in voip, virtualization, security, networking and backup/DR.  less

    windows-administration network-administration linux-system-administration software-debugging firewalls iptables security asterisk sip vmware-esx virtualization technical-support ssl vpn openvpn pfsense snort mail-server-implementation microsoft-exchange-server cisco-ios dns ldap penetration-testing telephone-skills microsoft-small-business-server-administration data-backup disaster-recovery ui-design windows-xp-administration microsoft-outlook-development open-office whm windows-nt-administration xmpp 00 more less
    • $21.11 HOURLY RATE
    • 5.0
    • 1683 HOURS
    • THAILAND
    • LAST ACTIVE
    • 9 PORTFOLIO ITEMS
    • 19 TESTS
  • VoIP Engineer

    I have 8 years of experience with VoIP. Troubleshooting of networks, VoIP networks and unix servers. SIP, MGCP, Linux Asterisk Opensips Vicidial goautodial Call centers setup VPS

    asterisk opensips vicidial voip-software sip network-administration call-center-management software-debugging perl linux-system-administration unix-system-administration technical-support technical-analysis 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 6 HOURS
    • PORTUGAL
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 1 TEST
  • I'm professionaly programmer from 1997 (started on Pascal/C/FoxPro). Other the years i've developed billing systems for mobile operator and ISP, websites and very specific VOIP services. I have configured and supported many of the FreeBSD/Linux … more

    I'm professionaly programmer from 1997 (started on Pascal/C/FoxPro). Other the years i've developed billing systems for mobile operator and ISP, websites and very specific VOIP services. I have configured and supported many of the FreeBSD/Linux servers using Puppet/SaltStack. At this time i'm developing WEB applications using Angular JS or other JS engines on frontend and PHP on backend. I'm have good skills in software design, Javascript/PHP/PERL/C and SQL languages, as well as TCP/IP, HTTP, SIP, H.323, RTP. VCS - GIT/SVN  less

    linux-system-administration javascript database-adminstration php puppet-administration postgresql ajax sip tcp-ip html 00 more less
    • $30.00 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 107 HOURS
    • RUSSIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 4 TESTS
  • Telecom/Application Server/Security/Unified Communication/Mobile Apps

    I have 13 yeasr development exp Domains VOIP/SIP/Telecom Telephony Application Server Development Unified Communications EJB Server Development Mobile and Trading Apps LDAP SSL /Security/Web Security WebServices / Rest Languages Java /J2EE / C++/C# Platform Unix / Linux /Windows

    sip j2ee c++ microsoft-visual-c++ .net-framework ldap oracle-pl/sql mysql algorithms xml-web-services rest uml oop 00 more less
    • $33.33 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 1 TEST
  • ARK Solutions

    Ark Solutions provide end-to-end services for mobile and Web Applications. We are specialized in: iPhone Applications iPad Applications Android Application Microsoft's Windows Mobile Black Berry Application Symbian Application SIP Dialer Website Design and Development Online Branding using Search Engine … more

    Ark Solutions provide end-to-end services for mobile and Web Applications. We are specialized in: iPhone Applications iPad Applications Android Application Microsoft's Windows Mobile Black Berry Application Symbian Application SIP Dialer Website Design and Development Online Branding using Search Engine Optimization & Marketing, Social Media Java Mobile Phone Applications eCommerce Web Development Our goal is to serve the best solutions with intense customer orientation that enable them to earn maximum return on their investments. for Further detail please visit our website  less

    asp.net .net-framework php html xml css3 iphone-app-development android-app-development ios-development html5 psd-to-html psd-to-xhtml java javascript core-java adobe-dreamweaver adobe-photoshop adobe-flash adobe-acrobat phpfox wordpress ajax jquery jquery-mobile css cisco-ios sip opensips quantitative-analysis seo internet-marketing internet-research ecommerce-consulting web-design web-content-management web-testing 00 more less
    • $10.00 HOURLY RATE
    • 4.7
    • 22 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 14 PORTFOLIO ITEMS
    • 2 TESTS
    ASSOCIATED WITH:
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