SIP Freelancers

Browse SIP job posts for project examples or post your job on oDesk for free!

SIP Job Cost Overview

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

oDesk SIP Jobs Completed Quarterly

On average, 31 SIP projects are completed every quarter on oDesk.

31

Time to Complete oDesk SIP Jobs

Time needed to complete a SIP project on oDesk.

Average SIP Freelancer Feedback Score

SIP oDesk freelancers typically receive a client rating of 4.44.

4.44
Last updated: April 1, 2015

Popular SIP Searches

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Arsen S.

Arsen S.

VoIP Administration & Development

Bulgaria - Last active: 1 day 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 SQL -MySQL/PostgreSQL - design, maintenance and optimization of databases -NoSQL: MongoDB Various Billing solutions and GUI: -A2Billing: Full proficiency (configuration from scratch, customization) -CDRTool (prepaid billing/accounting and sip tracing for OpenSIPS using RADIUS) -CDR-Stats (call detailed statistic/realtime for Asterisk and FreeSWITCH) -vBilling (billing for FreeSWITCH) -FreePBX: GUI for Asterisk -Fusionpbx: GUI for FreeSWITCH 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. Terms: Hourly based projects: -Current hourly rate is $40. Fix price projects: -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 escrowed and both parties have agreed with working terms.

$55.56 /hr
98 hours
5.00
Ruben Semerjyan

Ruben Semerjyan

Inovative Mobile VOIP, Social, Audio/Video Streami...

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

I am an innovative, extremely detail oriented and perfectionist Software Development Architect, with expert knowledge in VoIP, audio/video streaming and processing, messaging and social media. My a little over 8 years of experience in VoIP industry gave me a strong knowledge of the protocols, technologies and available solutions. 3 years of successful mobile applications development, architect and project management gave me confidence in creating robust and technologically challenging applications. I am passionate about developing robust, innovative and leading edge applications, getting increasingly challenging assignments and applying disruptive technologies. Looking for a work on technologically challenging projects (in an agile environment preferably), while offering my expert knowledge base, ability to learn quickly and apply new techniques. I usually bid slower than others, because of reading the full job description, trying to estimate all requirements, needed technologies and solutions.

$25.00 /hr
25 hours
5.00
Alex D.

Alex D.

Network / Security / VoIP / Unix Specialist

Russia - Last active: 11 days ago - Tests: 6

15+ year experience in networking. Built an ISP (Internet Service Provider) from scratch. Network Planning, Designing, Implementing and Optimizing. Right now we have about 4500 customers. We use Wireless & Fiber technologies. I do WISP and ISP consulting. I specialize on the following products: *** HP (mainly ProCurve switches family and rack servers) *** D-Link (layer 2 & 3 manageable switches) *** Ubiquiti (AirMax, Unifi, mFi & AirFiber products) *** Mikrotik (CCR series, wired & wireless RouterBoard series, x86 RouterOS) *** Grandstream (VoIP PBX, Phones, Gateways and ATAs) *** Linksys (VoIP products) *** Cisco (VoIP products and Catalyst series) *** DELL (SonicWall series) *** Draytek (Network & VoIP series) *** Other products: Linux, Mac OS X, Windows, vmware ESXi, Asterisk, FreePBX I have a good knowledge of the following technologies: TCP/IP, IPv4, Static & Dynamic routing, BGP, EIGRP, OSPF, Layer 2 & Layer 3 VPNs, IPSec, NAT, PAT, STP, VLAN, QinQ, GVRP, HSRP, VRRP, RSTP, MSTP, VTP, RDP, Firewall, Remote Access, HTTP, Load balancing, QoS, CoS, OpenVPN. Check out tests I've passed. I'm new to oDesk, thats why my hourly rate is low now :-) I'm ready for a test task.

$34.99 /hr
49 hours
5.00
Jack B.

Jack B.

Asterisk/VOIP/Vicidial/FreePBX/Elastix Expert | Te...

Philippines - Last active: 20 hours 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
49 hours
4.89
Kirill P.

Kirill P.

Asterisk Expert and System Administrator

Russia - Last active: 11 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
Victor Gil

Victor Gil

Experience Android Developer / Expert Windows Deve...

Venezuela - Last active: 1 month ago - Tests: 5 - Portfolio: 5

I am a software analyst and developer with more than 10 years of expertise in the area. I work with the following programming languages: Visual Foxpro, C#, VB .Net, PHP, HTML5, Javascript, Java, Delphi. I have developed applications for a big range of purposes, from a regular invoicing app to an instant messaging communication for mobile devices. I have knowlegde of: CSS3, MySQL, MSSQL, Silverlight, MVC, WCF, WPF, LINQ, ADO.NET, XMPP, Openfire (XMPP Server), Ubuntu, Gentoo, Office, Scirra Contruct2 (Game Development), Unity3D (Game Development), GIMP, LibreOffice, Wordpress. Right now my main interest is to work on mobile applications, can it be via HTML5 or native languajes. If you have any questions, please send me a message and I will answer ASAP.

Groups: Corona Labs
$20.00 /hr
14 hours
5.00
Leonid Danilov

Leonid Danilov

Russia - Last active: 3 days ago - Tests: 9

5 years expirience in network design, operation, management & troubleshooting. Expert knowledge in most valueble VoIP and traditional telephony standards and protocols, various 4&5 class softswitches configuration and management. Strong knowledge of UNIX system architecture and over 10 years of expirience in management and support of various Linux/BSD installations and most popular services(daemons) on them. Excellent ability to handle significant workload with experience in managing multiple projects concurrently in a matrix process environment. Experience with implementing and managing complex technical projects with the ability to solve technical problems. Skilled in work coordination and ditribution between different companie’s employees and subordinates. Equipment used in production environment: ASR1000/9k family, 76xx/65xx platforms, 2960/3560/3750 switches, 34xx/3750/38xx MetroEthernet family switches, AS5350 Voice Gateways. Cisco IOS, IOS-XR, IOS-XE configuration. HP SAN/NAS storage systems, ProLiant&Blade servers, MSR21xx routers and various access switches. Huawei MA5603, access switches, EdgeCore access&aggregation switches, ZyXEL DSLAMs& access switches. AudioCodes MP202/11x Voice Gateways, Mediant 1000/2000 Voice Gateways, RAD TDMoIP multiplexors, Tellabs SDH multiplexors. Q-tech CWDM multiplexors. Software used in production environment: Softswitches: MERA MVTS/MVTSII/RTU, OpenCA, CommunigatePRO, Asterisk/FreePBX/Elastix. OS:Red Hat/SuSE/Debian Linux, FreeBSD,OpenBSD. Scripting: bash,python Virtualization:VMWare.

$15.00 /hr
10 hours
4.92
Anton Stremovskiy

Anton Stremovskiy

Junior iOS Developer & VoIP Engineer

Ukraine - Last active: 20 hours ago - Tests: 3 - Portfolio: 1

More than 10 years experience in IT engineering. 1 year experience in Objective-C developing. Extensive experience in Linux & Unix systems. Deep practical knowledge VoIP Telephone and PBX Integration. Motivated team player with excellent communication skills. Expertise of working with internationally distributed teams. Fast learning and self-educating. Willing to travel as needed.

Groups: Corona Labs
$22.22 /hr
0 hours
5.00