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!

Da 25,365 valutazioni, i clienti danno una valutazione ai nostri VoIP Developers di 4.84 stelle su 5
Assumi VoIP Developers

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    20 lavori trovati, prezzi in EUR
    Pbx Mantenimiento 6 giorni left

    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.

    €14 / hr (Avg Bid)
    €14 / hr Offerta media
    8 offerte
    Pbx y Mantenimiento 6 giorni left

    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.

    €17 / hr (Avg Bid)
    €17 / hr Offerta media
    13 offerte

    I am looking for a freelancer who can develop a script for my fibre optic router that allows it to reboot in a programmed way. I do not have a specific router model, but I can provide details if needed. I want the router to reboot every time I want it to, so there is no specific frequency required. The reboot process should not cause any disruption to my internet connection, and I would prefer maximum speed for the reboot process. My main requirement is customized time settings for the reboot process, which means I need to be able to set the time for the reboot to occur. Ideal skills and experience for this job include: - Experience in router programming and scripting - Knowledge of fibre optic routers and their capabilities - Ability to customize time settings for reboot process - St...

    €139 (Avg Bid)
    €139 Offerta media
    10 offerte
    vicidial customization 6 giorni left
    VERIFICATO

    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

    €438 (Avg Bid)
    €438 Offerta media
    23 offerte

    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.

    €21 (Avg Bid)
    €21 Offerta media
    15 offerte
    Kamailio Developer -- 2 4 giorni left
    VERIFICATO

    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...

    €35 / hr (Avg Bid)
    €35 / hr Offerta media
    16 offerte

    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.

    €533 (Avg Bid)
    €533 Offerta media
    63 offerte
    Adro Recorder 4 giorni 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.

    €1302 (Avg Bid)
    €1302 Offerta media
    39 offerte

    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...

    €861 (Avg Bid)
    €861 Offerta media
    64 offerte

    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...

    €924 (Avg Bid)
    €924 Offerta media
    54 offerte

    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 Offerta media
    10 offerte
    PBX and Voip issues 3 giorni left
    VERIFICATO

    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.

    €188 (Avg Bid)
    €188 Offerta media
    14 offerte
    Encrypted VoIP 3 giorni 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;

    €1552 (Avg Bid)
    €1552 Offerta media
    24 offerte
    Kamailio Developer 2 giorni left
    VERIFICATO

    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)
    In primo piano NDA
    €36 / hr Offerta media
    5 offerte

    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.

    €356 (Avg Bid)
    €356 Offerta media
    10 offerte
    Webrtc to Sip gateway installation 1 giorno left
    VERIFICATO

    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 Offerta media
    6 offerte
    SIP Softphone 17 ore left
    VERIFICATO

    I am looking for a developer to create a SIP Softphone that is compatible with Android operating systems. The main requirement of the Softphone is to make phone calls. I should be able receive inbound calls and read any dtmf tones 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.

    €493 (Avg Bid)
    €493 Offerta media
    19 offerte
    FreePBX Dynamic Routing 11 ore left
    VERIFICATO

    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

    €175 (Avg Bid)
    €175 Offerta media
    27 offerte

    I am looking for a skilled developer to create a program that integrates my Fritzbox VoIP calls with a conversational AI chatbot. The goal is to enable voice calls to be converted to text, send the text to a ChatGPT model trained with knowledge about my company, generate a response, convert the response text to audio using Google Text-to-Speech API, and stream the audio file as a reply through my Fritzbox. The workflow of the program should be as follows: Receive incoming VoIP call on the Fritzbox. Convert the voice call to text using a suitable speech-to-text engine like Google. Send the text to a ChatGPT model that has been trained with information specific to my company. Generate a response from the ChatGPT model based on the input text. Convert the response text to audio using Google ...

    €671 (Avg Bid)
    €671 Offerta media
    35 offerte
    AsteriskAPI 8 ore left

    I am looking for an experienced Asterisk API developer to create an Asterisk Webhook API. The developer should have extensive expertise with Asterisk and be able to develop the API using an open source programming language. The API must include functionality for call control, call recording, and voicemail management. We are open to suggestions for the programming language and frameworks used to create the API, however, it must be versatile and reliable. We expect comprehensive documentation for the API as well as ongoing support to ensure it functions properly. Thank you for your time and we look forward to your proposal.

    €329 (Avg Bid)
    €329 Offerta media
    8 offerte

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