VoIP, otherwise known as Voice over Internet Protocol, is a digital solution for telecommunication that utilizes the transmission of voice through the use of data over the internet. This technology is typically adopted for both commercial and privately used applications. VoIP developers specialize in programming telecommunication systems using data transmission to provide efficient services for audio and video functions.

VoIP developers are highly sought after professionals as they can create a versatile and advanced system for both desktop and mobile devices. This can include creating a more interactive experience for customers with multi-way calls, conference calls, video conferencing and voicemail systems. VoIP developers can set up your business’s phone system such as forwarding calls remotely to other devices with extensions or even communicating with customers utilizing software like Callcentric, Flowroute or Voxbone.

Here's some projects that our expert VoIP Developer made real:

  • Secured and configured private networks by implementing security measures like IP SLA, NAT and ACLs
  • Integrating SIP trunks between billing platforms, PBXs and VoIP applications
  • Setting up Postfix mail server on Linux systems with TLS authentication and encryption
  • Installing and configuring sip telephony software like ASTPP into businesses
  • Developing web applications that can send and receive SMS messages utilizing VoIP APIs

Our expert VoIP Developer have created numerous projects to help business owners manage their telecommunications in a professional bet. Our developer have an array of experience in creating a secure and reliable system customized to each client demands. If you're looking to improve or create your business’ communication system, then post your project today on Freelancer.com to hire one of our skilled professional VoIP Developers today!

From 29,653 reviews, clients rate our VoIP Developers 4.87 out of 5 stars.
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    20 jobs found, pricing in INR

    I'm looking for an expert in SIP server configurations to build an all-inclusive server that provides VoIP calling, video conferencing, and instant messaging capabilities. The server will handle between 100 to 500 concurrent connections, so efficiency and stability are paramount. Here's what I need: - A fully configured, operational and secure SIP server - Support for VoIP calling, video conferencing, and instant messaging - Mobile Apps integrations voip, pushkit, in flutter Ideal Skillset: - Proven experience in server configurations specifically SIP servers - Strong understanding of networking principles - Ability to manage and optimize server for a large number of concurrent connections - Excellent problem-solving skills The completion timeframe for the project is within o...

    ₹42440 (Avg Bid)
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    4 bids

    I am in need of a Wave-based VoIP & PBX application. The application must have essential features at minimum like call recording, IVR and conference calling, file sharing capabilities. However, if you can integrate additional features such as call routing, voicemail, and call analytics, that will give you an upper hand! Ideal Skills and Experience: - Significant experience in developing VoIP and PBX applications. - Proficiency in Wave technology. - Skilled in integrating advanced features into applications. Please apply only if you are ready to provide an immediate solution. I am looking forward to working with a dedicated and talented professional! Please show demo with access so that we can check and tell you our modifications. We have many projects so looking expert for multiple ...

    ₹92009 (Avg Bid)
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    14 bids

    I am in need of a state-of-the-art Wave-based VoIP & PBX application. The application must have essential features at minimum like call recording, IVR and conference calling, file sharing capabilities. However, if you can integrate additional features such as call routing, voicemail, and call analytics, that will give you an upper hand! Ideal Skills and Experience: - Significant experience in developing VoIP and PBX applications. - Proficiency in Wave technology. - Skilled in integrating advanced features into applications. Please apply only if you are ready to provide an immediate solution. I am looking forward to working with a dedicated and talented professional! Please show demo with access so that we can check and tell you our modifications. We have many projects so looking ex...

    ₹92838 (Avg Bid)
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    5 bids

    As a Part-Time Vicidial Developer, you will be integral to the continuous improvement and maintenance of our Vicidial system, ensuring optimal performance to meet our organization's unique requirements. This role is perfect for a committed developer with a passion for telephony solutions and a solid background in Vicidial development, particularly in GoHighLevel integration. Responsibilities: Customization and Configuration: Tailor, configure, and uphold the Vicidial system to align seamlessly with organizational needs. Collaboration: Work collaboratively with cross-functional teams to comprehend business requirements and implement Vicidial solutions accordingly. Troubleshooting: Identify and resolve issues related to Vicidial system performance or functionality, including integra...

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    I am seeking a specialist to help integrate AWS with our Asterisk PBX system. Key responsibilities will include: -Diagnose and resolve organic AWS to Asterisk PBX connection issues -Assure AWS and Asterisk PBX platforms interface correctly Ideal skills: -Extensive experience with both AWS and Asterisk PBX is essential -Experience with system integration and troubleshooting -Ability to work independently and find creative solutions to complex problems Whilst the specific functionalities and preferences for this project have not yet been finalized, these will be communicated upon initiation of the project. Your experience and suggestions will be valued in these discussions.

    ₹995 / hr (Avg Bid)
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    I am seeking a skilled developer who can build an Asterisk solution on Amazon Web Services (AWS). The system should be proficient in handling a load capacity of 10-50 concurrent calls, ensuring efficient performance and high availability, thereby exceeding the traditional communications infrastructure. Key Features: - Providing VoIP services - Enabling Conference Calling - Incorporating Call Recording Preferred Skill Set: The ideal freelancer for this task should be experienced with not only telephony engineering, but also cloud environment configuration. Knowledge in Asterisk operation, VoIP, and AWS platform are absolutely essential. Proven experience in similar projects is highly appreciated. The goal is a robust and scalable Asterisk environment that leverages the power of cloud, cap...

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    I am seeking a proficient developer or team with experience in VoIP and PBX solutions, specifically ones that leverage wave technology. Below is features list: Crafting a user-friendly interface for an IP Phone system Making a simple IP Phone interface Building an easy IP Phone interface Designing a sleek IP Phone interface Ensuring high-quality standards for audio and video communications Keeping high-quality audio and video Delivering reliable audio and video Achieving smooth audio and video Incorporating essential features such as instant messaging and file sharing Adding instant messaging and file sharing Integrating instant messaging and file sharing Implementing instant messaging and file sharing Please only bid if you have something ready solution which you can show as demo whic...

    ₹49735 - ₹82891
    Sealed
    ₹49735 - ₹82891
    9 bids

    please teach me how to install, configure kamailio, trouble shoot and check log. I have a need for SIP Proxy

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    I'm seeking an experienced network engineer to work on my Cisco 2951 STC telephone line VoIP configuration. Key Responsibilities: - You will primarily be responsible for setting up VoIP using the SIP protocol. - Integration of specific SIP trunking features is also needed, in line with our operational requirements. Skills and Experience: - Prior experience in configuring Cisco 2951 STC or similar products is a must. - Extensive knowledge and experience with VoIP technology and SIP protocol. - Familiarity with SIP trunking features would be considered a great advantage. Candidates who can deliver the project promptly and professionally will be highly preferred. This project offers the opportunity to showcase your abilities in a complex, highly technical environment.

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    I am seeking a proficient software developer to build a communication software compatible with the Windows operating system. Key specifics for this software are as follows: SIP (Session Initiation Protocol) –The de facto standard for VoIP communication, used for initial authentication and negotiations when making connections. RTP (Real-Time Transport Protocol) – Chatty, used to transmit audio after authentication and negotiations. IAX (Inter-Asterisk Exchange) – Legacy, less chatty, must have trunk to convert from IAX to SIP service provider. DISA (Direct Inward System Access) – This is sort of like VPN’ing to your internal system, so you can dial internal extensions. DID (Direct Inward Dialing) – This is the telephone number assigned by your service pr...

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    Looking for Asterisk implementation engineer who is good at configuring inbound and outbound setup.

    ₹1078 / hr (Avg Bid)
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    7 bids

    As a Part-Time Vicidial Developer, you will be integral to the continuous improvement and maintenance of our Vicidial system, ensuring optimal performance to meet our organization's unique requirements. This role is perfect for a committed developer with a passion for telephony solutions and a solid background in Vicidial development, particularly in GoHighLevel integration. Responsibilities: Customization and Configuration: Tailor, configure, and uphold the Vicidial system to align seamlessly with organizational needs. Collaboration: Work collaboratively with cross-functional teams to comprehend business requirements and implement Vicidial solutions accordingly. Troubleshooting: Identify and resolve issues related to Vicidial system performance or functionality, including integra...

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    19 bids

    Edit Description In need of an experienced Freeswitch developer who can immediately tackle two key areas: configuration and deployment, as well as customization and integration. Job tasks include: - Configuration and deployment of Freeswitch - Customization according to our specific needs - Integration of Freeswitch into our existing system We missed out on specifying desired features during configuration and deployment but I welcome any suggestions from potential freelancers regarding high-availability, scalability, and security for my project. Due to the urgency of our needs, we seek freelancers who can start ASAP and have a proven track record working with Freeswitch. Mastery in system integration and customization is necessary. Ability to work quickly without compromising quality is...

    ₹1326 / hr (Avg Bid)
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    5 bids

    We're seeking for an experienced VoIP software developer to perform various specific tasks on a time-sensitive project. perform a market research about the top three communication mobile apps (like telegram). We would like to know their main features, and information about each one, and what technology the app was developed in. - Develop a custom software solution tailored to our specific needs. Maintenance, debugging of the existing software as well as optimization and improvement of software performance are key. - Expertise in VoIP market research is required. You'll be responsible in gathering intel on market trends and growth, conducting a competitive analysis of VoIP providers, and studying customer preferences and needs. The ideal candidate will have a strong understa...

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    I'm seeking an experienced developer to integrate VoIP to WhatsApp on both Android and iOS. The main functionality that I'm interested in is voice calling. Moreover, it's critical to have the ability to call PSTN (Public Switched Telephone Network) to WhatsApp. The ideal freelancer should: - Have previous experience in cross-platform app development, specifically with VoIP integrations. - Familiarity with APIs and how to integrate them into both iOS and Android platforms. - Familiarity with WhatsApp API would be advantageous. - Understanding of the requirements and constraints of the PSTN. - Necessary skills in developing voice calling functionality. This project's success will hinge on your ability to create a seamless experience for users to engage in voice callin...

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    I’m in need of an expert in Twilio. I'm looking for someone to revamp my current system to allow for the reception of texts directly to my email in plain text format. Skillful handling of API keys, specifically for Twilio and Sendgrid, is necessary. The system should not incorporate any high-security encryption, standard security measures will suffice. Another key feature of this project is the immediate notification via email for each incoming SMS. Effective implementation of real-time alert technology is crucial. Please only make a bid if you are conversant with the following requirements: - Twilio SMS and Sendgrid API setup - Instant email alert for every incoming SMS - Plain text email formatting Be prepared to demonstrate relevant experience. Let's connec...

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    I am in need of an advanced VoIP developer with specific experience in VitalPBX+Odoo integration. The main problem I am facing is with incoming calls; the webrtc phone from Odoo is not properly receiving them. Thankfully, outgoing calls from this system are working without any issues. But, since the incoming call problem persists, immediate attention to this matter is essential to me. I haven't noticed any other connectivity issue including internal call transfers or conference calls. Ideal freelancers for this project should possess: - Proven experience in VoIP development - Specific knowledge in VitalPBX and Odoo integration - Ability to diagnose and fix the issue with incoming calls - Excellent problem-solving and communication skills I am looking forward to having my system run...

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    3 bids

    I'm looking for an expert in telecommunication and VoIP technology, specifically someone with experience in Asterisk and SIP integrations. Key Project Aspects: - Asterisk Setup: Your task will be to set up Asterisk with multiple features including monitor calls + transfer + hang up calls, an IVR system, and call recording. I require a high level of accuracy and efficiency in the configuration of these features. - SIP Service Connection: Additionally, I need to connect Asterisk to a SIP service. We have an AI that speaks and give response to your recorded message. So the idea is to connect this AI to the Asterisk that is connected to the SIP so it can speak with people on the phone. Ideal Skills: - Experience setting up and configuring Asterisk, IVR systems, and call recording -...

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    As someone seeking a professional to assist in acquiring and setting up a Dinstar PBX system, this project specifically focuses on creating a small office setup - up to 20 users. The primary function required is Call Recording. Skills & Experience: - Proficiency in Dinstar PBX System setup - Technical knowledge on incorporating Call Recording - Experience with small office networks - Excellent problem solving and communication skills Your primary role will involve: - Advising on the best Dinstar PBX system suited for my needs - Performing a hallmark setup of the Dinstar PBX system - Enabling Call Recording - Ensuring seamless functionality for up to 20 users Your task will be deemed successful upon the seamless operation of a Call Recording-enabled Dinstar PBX system setup for a ...

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    NECESITO ACTIVAR ,MI CERTIFICADO SSL IN MI SERVIDOR Y REDIRECCIONAR EL HTTPS

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