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!

Od 25,413 recenzí, klienti hodnotí našeho pracovníka VoIP Developers 4.84 z 5 hvězd.
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    21 zakázek nalezeno, ceny v EUR

    Looking for a fast flowing developer who can create A SIP Softphone Application preferably compatible with android or iOS whichever is fluent. Outbound calling ; must be dftm tones made available to see with 0 latency on the applciation. UI Design Preferences: We require a custom design that is user-friendly and visually appealing. The design should be minimalistic with a modern touch. Ideal skills and experience for this job include: - Experience with SIP Softphone development - Strong knowledge of Android operating system - - Experience with VoIP and telecommunications - Familiarity with SIP protocol -Strong attention to detail and ability to deliver high-quality work - Excellent communication skills to ensure project success. - Crypto API experience.

    €1378 (Avg Bid)
    €1378 Průměr. nabídka
    32 nabídky

    I am looking for a freelancer who can help me set up a Jitsi / Jigasi / Jibri SIP video calling API in a 1-1 room. I already have a server to host the setup, so the ideal candidate should be familiar with configuring and deploying Jitsi on a server. I require some custom features to be added to the basic Jitsi setup. The level of customization needed is moderate, so the freelancer should be able to make moderate changes to the codebase as per my requirements. The ideal candidate should have experience working with Jitsi, Jigasi, and Jibri, and be proficient in customizing and deploying these tools. They should also have a good understanding of SIP video calling API. In summary, the ideal candidate should have the following skills and experience: - Experience with Jitsi, Jigasi, and J...

    €21 / hr (Avg Bid)
    €21 / hr Průměr. nabídka
    7 nabídky
    FreePBX Dynamic Routing 6 dní left
    OVĚŘENÉ

    I am looking for a freelancer who can help me with my FreePBX Dynamic Routing project. My current setup is a Single Server. I need a developer who can set up a mySQL database to capture caller inputs in order to enable dynamic routing. I require 2-4 different routing options. The contractor will only be able to access the system through me I don't have remote access. Also, the person will need to walk me through each step of development and implementation. Ideal skills and experience for this job include: - Strong experience with FreePBX and mySQL - Knowledge of dynamic routing - Ability to create customizations and integrations when necessary - Excellent communication skills and ability to work independently

    €389 (Avg Bid)
    €389 Průměr. nabídka
    39 nabídky
    Simple VoIP Call App for iOS 6 dní left
    OVĚŘENÉ

    Hello, We are looking for a simple voip call app for iOS. No custom UX UI needed. There will be simply one “call” button on the app. If you click, you will see the online phone numbers that are using this app. And when you click one person from that list, app will call the selected contact. VoIP push call should be seen on the calling contact even if the app is in-sleep/killed. If you have worked on this before, provide me the working-app video or store link; it will speed up the selection process.

    €528 (Avg Bid)
    €528 Průměr. nabídka
    44 nabídky

    I am looking for a freelancer who can integrate an auto dialer with my Vtiger 7.4 CRM. The ideal candidate would have experience in both CRM integration and dialer technology. The specific features I need the dialer to integrate with my CRM are call recording. The project requires the following skills: - CRM integration - Auto dialer technology - Call recording expertise If you are interested in this project, please provide a brief summary of your relevant experience and provide examples of similar projects you have completed in the past.

    €458 (Avg Bid)
    €458 Průměr. nabídka
    22 nabídky

    We are currently looking for a talented individual who can assist us in modifying and tailoring a Chat, VoIP and Video call applications based on an existing source code available on GitHub. Our current project involves customizing a chat app to meet the specific requirements of our target audience. The app aims to streamline communication, facilitate collaboration, and offer a user-friendly interface.

    €2302 (Avg Bid)
    DOM
    €2302 Průměr. nabídka
    39 nabídky

    I am in need of a freelancer with strong skills and experience in PBX maintenance. Specifically, I have a digital PBX system that requires attention. The main issues that I am experiencing are related to configuration problems, as well as the need to migrate to Freepbx and develop new applications. Ideally, the freelancer will be able to complete this work within 1-2 months, though there is some flexibility with the timeframe. The ideal freelancer will have experience with digital PBX systems and be able to troubleshoot and solve configuration problems. Additionally, experience with Freepbx migration and application development would be highly valued.

    €17 / hr (Avg Bid)
    €17 / hr Průměr. nabídka
    12 nabídky

    Our company is currently in need of a skilled freelancer to assist us with our PBX system maintenance. We currently have a VoIP system in place and require maintenance to migrate the system and develop and provide solutions for repairing any issues. Ideal Skills and Experience: - Experience in VoIP systems - Knowledge in system migration and development - Troubleshooting and repair skills Timeline: - Flexible (2+ weeks) If you possess the necessary skills and experience, please do not hesitate to apply.

    €19 / hr (Avg Bid)
    €19 / hr Průměr. nabídka
    16 nabídky
    vicidial customization 5 dní left
    OVĚŘENÉ

    i need customization for Call recording module and agent ratind module (by supervisor) i need this module ready so share it if you did it before i need candidate with experiance on vicidial customization

    €466 (Avg Bid)
    €466 Průměr. nabídka
    25 nabídky

    I am seeking a skilled Cisco technician to help resolve a connection timeout issue on my Cisco 4331 ISR. The issue appears to be affecting our LAN connection, though I am not sure if it is persistent or intermittent. I do know that we have recently made changes to our network configuration, which may be contributing to the problem. Ideal skills and experience: - Experience troubleshooting Cisco 4331 ISR routers - Knowledge of LAN connection issues and how to resolve them - Familiarity with network configuration changes and their potential impact on connectivity - Strong problem-solving skills and attention to detail.

    €20 (Avg Bid)
    €20 Průměr. nabídka
    19 nabídky
    Kamailio Developer -- 2 3 dní left
    OVĚŘENÉ

    We are looking for a Kamailio Developer! Our in-house Kamailio developer is retiring. We would love to find someone who is a real Kamailio expert that loves creating/developing outside-of-the-box solutions. We want to find someone who has experience with custom modules, and who has a fantastic fine-tuning skill set. All our Kamailio are extremely high CPS it would be ideal if you have experience in Freeswitch & Postgress as well. This is not a one-project job and done, we would love to find someone for the long term and become our "Go to Guy" and have someone get familiarized with our network/systems. The first task we have is for someone to review one of our new configurations and see where we can fine-tune it, also want to change how Kamailio communicates to the custom...

    €34 / hr (Avg Bid)
    €34 / hr Průměr. nabídka
    17 nabídky

    I am looking for a skilled Android developer with experience in Java to develop a VOIP call recorder app. The app should have the following features: - Automatic recording: The app should automatically start recording when a call is initiated. - Cloud storage integration: The app should have the feature to integrate with cloud storage for easy access and sharing of recordings. The ideal candidate should have experience with VOIP call recording and be able to deliver a high-quality app that meets the my requirements.

    €529 (Avg Bid)
    €529 Průměr. nabídka
    63 nabídky
    Adro Recorder 3 dní left

    My project is called Andro Recorder, a recording system that can be used only on Andoid. Its main purpose is to the record both audio and video on Voip Call like Whatsapp etc etc, it will be based on Andorid 11 and if is necessary on rooted device.

    €1293 (Avg Bid)
    €1293 Průměr. nabídka
    39 nabídky

    I am looking for a developer to create an app in React for student and teacher communication. The app should have the following features: - Student / Teachers (Councilors App ) - Chat, video call, and screen sharing capabilities (3pl) - Available on both iOS and Android platforms - Payment Gateway for Students to Pay Teacher - System checks Students Balance before initiating a call/chat session with Teacher and Pops Payment Request - System also keep checking the Balance of Student while in call/chat session. - System disconnect the call/chat session if balance of student is finished and pops on students screen for refilling or buy a calling coupon with options to choose the coupon size ( minutes) -Call / Chat session of the student is based on the charges posted by Tutor / Per Minut...

    €855 (Avg Bid)
    €855 Průměr. nabídka
    64 nabídky

    I am looking for a developer to create an app in React for student and teacher communication. The app should have the following features: - Student / Teachers (Councilors App ) - Chat, video call, and screen sharing capabilities - Available on both iOS and Android platforms - Payment Gateway for Students to Pay Teacher - System checks Students Balance before initiating a call/chat session with Teacher and Pops Payment Request - System also keep checking the Balance of Student while in call/chat session. - System disconnect the call/chat session if balance of student is finished and pops on students screen for refilling or buy a calling coupon with options to choose the coupon size ( minutes) -Call / Chat session of the student is based on the charges posted by Tutor / Per Minute Rate...

    €918 (Avg Bid)
    €918 Průměr. nabídka
    54 nabídky

    Have a Firewalla gold router and firewall. Using Omada EAPs, 1 managed Omada switch, 2 unmanaged netgear switches, and Omada oc200 controller. Looking for 2 deliverables: 1. Create VLAN for IoT devices 2. Setup 1-way communication so devices on main network can access printer/Roku/etc on IoT VLAN

    €55 (Avg Bid)
    €55 Průměr. nabídka
    10 nabídky
    PBX and Voip issues 2 dní left
    OVĚŘENÉ

    I am experiencing issues with my PBX and Voip systems. Specifically, I'm having connectivity issues. I am using multiple services/platforms for my Voip but I'm not sure which solutions or troubleshooting methods I should use in order to fix my current issues. I'm in need ofa freelancer to fix the issues remotely.

    €236 (Avg Bid)
    €236 Průměr. nabídka
    15 nabídky
    Encrypted VoIP 2 dní left

    I am looking for a freelancer who can help me build an encrypted VoIP system using military-grade encryption. I have no preference regarding VoIP protocols, however I anticipate the need for up to five simultaneous calls. If you have the necessary skills and expertise to build this system, I would love to hear from you. Something like;

    €1527 (Avg Bid)
    €1527 Průměr. nabídka
    25 nabídky
    Kamailio Developer 2 dní left
    OVĚŘENÉ

    We are looking for a Kamailio Developer! Our in-house Kamailio developer is retiring. We would love to find someone who is a real Kamailio expert that loves creating/developing outside-of-the-box solutions. We want to find someone who has experience with custom modules, and who has a fantastic fine-tuning skill set. All our Kamailio are extremely high CPS it would be ideal if you have experience in Freeswitch & Postgress as well. This is not a one-project job and done, we would love to find someone for the long term and become our "Go to Guy" and have someone get familiarized with our network/systems. The first task we have is for someone to review one of our new configurations and see where we can fine-tune it, also want to change how Kamailio communicates to the custom...

    €36 / hr (Avg Bid)
    Doporučené DOM
    €36 / hr Průměr. nabídka
    5 nabídky

    I am looking for a freelancer who can assist me with the installation and configuration of Kazoo on Linux. I require complete setup assistance, including help with setting up the underlying infrastructure. The kazoo configuration I need is a cluster setup. Ideal skills and experience: - Experience with Kazoo installation and configuration - Proficiency in Linux operating system - Strong knowledge of networking and infrastructure setup - Experience with cluster setup configuration.

    €353 (Avg Bid)
    €353 Průměr. nabídka
    10 nabídky
    Webrtc to Sip gateway installation 9 hodiny left
    OVĚŘENÉ

    I need a webrtc to sip gateway to be implemented so I can connected some webrtc softphones (asterisk webrtc softphones on our Odoo CRM) to twilio sip domain

    €94 (Avg Bid)
    €94 Průměr. nabídka
    6 nabídky

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