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!

从30,153个评价中,客户给我们的 VoIP Developers 打了4.88,共5星。
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    21 份搜到的工作,货币单位为 HKD
    VoIP Application Development 6 天 left
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    I am seeking a capable developer to build specific functionalities for a VoIP application. The core tasks involved in this project include: - Integration of VoIP with Lambda and Lex: The end goal is to enable automated interactions using voice recognition. This will inevitably streamline operations - making the entire process swift and efficient. - Automated Customer Service: The voice recognition feature will primarily be used to automate customer service. This will optimize the user experience greatly by providing instant and accurate responses to customer queries. Ideal Skills required: - Proficiency in VoIP solutions, and a solid understanding of Lambda and Lex - Prior experience in implementing and integrating voice recognition features, specifically for automated customer inte...

    $86 / hr (Avg Bid)
    $86 / hr 平均报价
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    I'm looking for an expert who can seamlessly integrate my Perfex CRM with the 3CX PBX system. Key features required: - Dialing and Receiving Calls: I need a system that allows for seamless dialing and receiving of calls. This includes configuring the CRM to accept incoming calls and make outgoing calls via the PBX system. - Syncing Contact Lists: The integration should allow for effortless syncing between the contact lists on both the CRM and the PBX system. This means any change in contacts on either platform should be reflected on the other. - Call Recording Storage: The integration should enable call recording and the storage of these call recordings. This is crucial for quality control and training purposes. There's no specific deadline for this, so I'm looking f...

    $1448 (Avg Bid)
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    I am in need of an expert to set up my CISCO CP 8851 for Google Voice, for which I already have an account. Your task will be to ensure that the devices are configured correctly and working seamlessly with Google Voice. Skills and Experience Required: • Strong knowledge and prior experience with CISCO CP 8851 • Experience with setting up VoIP systems, specifically Google Voice. • Familiarity with proper configuration settings and troubleshooting VoIP devices. • Excellent problem-solving skills and attention to detail. While the project's main goal is to get these devices configured and working together, additional upgrades or adjustments may be requested, based on the service's performance and the potential to refine the system. As such, a flexible, adaptab...

    $180 (Avg Bid)
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    I need assistance in configuring my Grandstream IP PBX system to include call forwarding. Though the specific trigger conditions for this feature aren't necessary, an understanding of how to implement these will be beneficial. Required skillset includes; - Experience with configuring Grandstream IP PBX systems - Knowledge in call forwarding feature The configuration needs to be completed as soon as possible. If you've got the right expertise, don’t hesitate to place a bid.

    $1494 (Avg Bid)
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    I am in need of a professional proficient in CGrates who will not only configure the system but also verify that each feature operates smoothly. Your duties must include, but are not limited to: - Masterful set-up of CGrates - Ensuring real-time account balance functionality - Enabling advanced call routing - Implementing comprehensive billing reports Additionally, this configuration will involve 2-5 telecom operators or providers, so previous experience working with multiple providers would be ideal. For a successful execution of the project, in-depth knowledge and practical experience with CGrates is a must. I am looking forward to your expert contribution.

    $5477 (Avg Bid)
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    I am in need of an experienced developer to create a state-of-the-art VoIP application, with integration of Grandstream API. The platform should encompass advanced features, including: - Audio/Video communications - Instant Messaging with file sharing - IP phone system In terms of design aesthetics, I'm envisioning a professional yet minimalistic look -- Kindly keep the color scheme mainly in black & white to fit the business-oriented vision. Having experience in VoIP applications and Grandstream integration is a must. The project holds an urgency so freelancers with ready demos for testing are given preference. Don't bid if you can't provide a demo for the test as we need to launch is in fast turnaround. Let's create a robust and user-friendly VoIP application t...

    $8607 (Avg Bid)
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    I am looking for a competent professional who can help me deploy an ERC-404 contract on PulseChain. The ideal candidate will have a proven track record in smart contract development and deployment. Key functionalities of the ERC-404 contract: - Minting new tokens - Transferring tokens - Burning tokens Required Skills and Experience: - Proficiency in Solidity and understanding of ERC-404 standards - Hands-on experience in deploying contracts on different Blockchain networks, notably PulseChain - Knowledge in tokenomics and DeFi protocols - Familiarity with secure coding practices and ability to conduct smart contract audits Please provide examples of similar projects you have completed in your proposal. I look forward to your competitive bids and working with you.

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    I require the assistance of a knowledgeable professional to install the Drachtio module on FreeSwitch running on my Linux OS. This will be used primarily for enhancing Voice over IP (VoIP) communication in our system. The job would entail the following tasks: - Installation of the Drachtio module on FreeSwitch - Run some tests to ensure it's functioning well and improving VoIP communication as intended To be successful in this role, you should have: - Strong experience dealing with the FreeSwitch platform - In-depth understanding and experience working with Drachtio and related modules - Strong knowledge and hands-on experience dealing with Linux OS - Good experience in enhancing VoIP communication. Keep in mind that the main target here is to install the Drachtio module on FreeSwi...

    $227 / hr (Avg Bid)
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    5 个竞标

    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...

    $4405 (Avg Bid)
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    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 ...

    $8670 (Avg Bid)
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    17 个竞标

    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...

    $8552 (Avg Bid)
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    8 个竞标

    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...

    $1479 (Avg Bid)
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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.

    $110 / 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...

    $5070 (Avg Bid)
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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...

    $4695 - $7825
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    $4695 - $7825
    10 个竞标

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

    $219 (Avg Bid)
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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...

    $4003 (Avg Bid)
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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.

    $1291 (Avg Bid)
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    Looking for Asterisk implementation engineer who is good at configuring inbound and outbound setup.

    $102 / hr (Avg Bid)
    $102 / hr 平均报价
    7 个竞标

    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...

    $1135 (Avg Bid)
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    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...

    $125 / hr (Avg Bid)
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    5 个竞标

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