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!

Từ 28,588 nhận xét, các khách hàng đã đánh giá VoIP Developers 4.8 trên 5 sao.
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    Freeswitch Developer 6 ngày left
    ĐÃ XÁC THỰC

    Require Full stack expert freeswitch developer for development of call dialer api. Experience in Freeswitch is MUST

    $679 (Avg Bid)
    $679 Giá đặt trung bình
    6 lượt đặt giá

    App answers all inbound calls but does not ring phone until caller is proven to be a live person via entering a provided audible pin number like 1 then rings phone otherwise gives user options, option one to end all calls not entering pin or option two sends all calls not entering pin to there carrier voicemail (Verizon) or email over voicmail (Google voice) option three send caller a text message. User option to record greeting when app intercepts call, user option to create custom text message to send, and user option to set pin from 1 digit two 4 digit. For example the users inbound caller would hear the users pre recorded greeting from the app, example might be like "HI you've reached my name at a business name and we screen all our calls for solicitors if your not a solicito...

    $1145 (Avg Bid)
    $1145 Giá đặt trung bình
    76 lượt đặt giá

    I am in need of assistance with a data center migration project. My current data center setup is on-premise and I already have a preferred data center to migrate to. This project has an expected timeline of 1-3 months. Experienced audio codes SBC professionals with knowledge of data center migration are needed to provide the needed expertise. Only experienced professionals with exceptional skills should apply. They should be highly knowledgeable in audio codes SBC, data center migration, hardware configuration and IT infrastructure. We need help with troubleshooting, design, migration, implementation, and support to ensure the successful completion of this project. This is a project with high stakes so it is critical to find a candidate with a proven track record, excellent communication s...

    $566 (Avg Bid)
    $566 Giá đặt trung bình
    11 lượt đặt giá

    I am looking for a skilled freelancer who can help me configure my Asterisk server for connectivity to a SIP trunk. Requirements: - Expertise in configuring Asterisk servers - Knowledge of SIP trunk connectivity - Familiarity with call routing and IVR features - Strong troubleshooting skills The project involves: - Configuring the Asterisk server to establish connectivity to the SIP trunk - Setting up basic features such as call answering, audio playback, and call termination Skills and experience required: - Proficiency in Asterisk and SIP trunk configuration - Ability to work with SIP trunk credentials and configuration details Please note: - I have all the necessary SIP trunk credentials and configuration details - I only require basic features for call handling and playback - The ...

    $40 / hr (Avg Bid)
    $40 / hr Giá đặt trung bình
    22 lượt đặt giá

    I am looking for a freelancer who can assist me with configuring a SIP trunk to an asterisk server running on Azure. Ideal Skills and Experience: - Experience with setting up SIP trunks to asterisk servers - Knowledge of Azure and configuring servers on this platform Specific Requirements: - Configure the SIP trunk to enable inbound calls on the asterisk server running on Azure. Currently the calls is received by the asterisk server but is throwing error: "No matching endpoint found". I can provide login to the asterisk server but for azure network configuration I can only provide screenshots. callplan and pjsip configuration has already been made, but it is possible it is wrongly configured.

    $213 (Avg Bid)
    $213 Giá đặt trung bình
    16 lượt đặt giá

    We are actively seeking a skilled and experienced Flutter developer to create a functional application and provide sample code. This application should facilitate video calling capabilities via integration with the FreePBX platform. ** Primary Responsibilities: 1. Development: Develop a Flutter application with a clean and user-friendly UI for video calling. 2. Integration: Effectively integrate the application with FreePBX to ensure seamless video communication. 3. Sample Code: Provide well-documented sample code to demonstrate the integration and functionality of video calls with FreePBX. 4. Testing: Conduct rigorous testing to ensure the application’s stability, reliability, and performance. 5. Support: Offer technical support and troubleshooting assistance during the integr...

    $50 - $200
    Niêm phong
    $50 - $200
    17 lượt đặt giá

    Rebuilding the RAID in A Linux Server Dracut Emegergency mode - The Linux server is currently running but with errors - I have a backup of the data on the RAID - I prefer communication through phone calls Skills and Experience: - Strong experience with Linux server administration - Expertise in RAID configuration and recovery - Familiarity with Dracut Emergency mode - Ability to troubleshoot and resolve server errors - Excellent communication skills for effective phone call communication

    $87 (Avg Bid)
    $87 Giá đặt trung bình
    6 lượt đặt giá

    I am looking for a freelancer to help me with setting up and customizing VICIdial for my sales team. Here are the details of the project: Size of Sales Team: 10-20 members VICIdial Setup: I need the freelancer to set up VICIdial from scratch as it is not currently installed. Customization Requirements: The specific customization required for the VICIdial system is CRM Integration. Ideal Skills and Experience: - Experience in setting up VICIdial from scratch - Familiarity with CRM Integration and configuring VICIdial to integrate with a CRM system - Knowledge of call center operations and sales processes If you have the necessary skills and experience in VICIdial setup and customization, especially in CRM Integration, please submit your proposal. We are looking for a freelancer to ...

    $913 (Avg Bid)
    $913 Giá đặt trung bình
    28 lượt đặt giá

    I'm in need of an experienced service provider to install and configure a PBX system with 25 extensions. The system I need is an on-premise one which does not require integration with CRM or any other software. I expect the service provider to be well versed in PBX installation and configuration and have experience with similar systems. The project requires all necessary supplies, installation, and configuration of the PBX system with 25 extensions. Upon completion of the job, I would like to be fully operational with the new system.

    $133 (Avg Bid)
    $133 Giá đặt trung bình
    11 lượt đặt giá

    I am looking for an expert developer who can assist me with the configuration of Five9 and the agent scripting. Specifically, I need help with the agent scripting aspect of Five9. Skills and experience required: - Expertise in Five9 configuration - Proficiency in agent scripting - Familiarity with IVR setup and call routing is a plus Project requirements: In Predictive Dialing Mode and All in one campaign Once a client pickups up.. We will provide a ranked list of agents per client, in other words each client has a different priority list of agents. This needs to be stored and accessible. If there are 1 M clients there will be 1 M ranked agents. When a client pickup up, Five9 needs to select the best agent who is available instead of the usual who has been witing the longest. ...

    $38 / hr (Avg Bid)
    $38 / hr Giá đặt trung bình
    15 lượt đặt giá

    We would like to install a fresh FusionPBX on VPS server what we need it secure: a. Firewall b. SSL / TLS (Let’s Encrypt) c. XML RPC d. Fail2ban e. Sip registration from nated networks issues like sorting out one way voice etc. Do test make sure everything works for multitenent clients etc. . Please message me for more inquiry that i need. Thank you.

    $97 (Avg Bid)
    $97 Giá đặt trung bình
    5 lượt đặt giá
    Custom software for callcenter 2 ngày left
    ĐÃ XÁC THỰC

    We are looking to create a custom software solution for my callcenter in the UAE, where calling mobile numbers through internet is not possible. We are looking to create a tool which automatically calls through a list of numbers, interacts with receivers in a basic manner using pre-recorded sentences, then updates the status of the lead in our CRM at Bitrix24. Design is irrelevant, we only care about functionality. More details about exact functionality will be discussed later, but this projects requires a lot of creativity and problem-solving. We are open to any solution, no matter how creative, which achieves the objective. The task is made more difficult due to inability to make phone calls via internet in the UAE. Rooted android phones are available to be used in the solution.

    $1585 (Avg Bid)
    $1585 Giá đặt trung bình
    55 lượt đặt giá

    I am looking for a freelancer who can help me resolve an issue with my Kamailio server. Currently, my server has a customized configuration. I have been experiencing an issue where calls are disconnecting after 60 seconds. Unfortunately, I do not have specific error messages or issues to share at the moment. My expected outcome after the issue is resolved is to have calls not disconnecting after 60 seconds. Ideal skills and experience for this job include: - Strong knowledge and experience with Kamailio server configuration - Troubleshooting skills to identify and resolve the issue - Understanding of SIP and VoIP protocols - Ability to work with customized configurations - Attention to detail to ensure calls stay connected beyond 60 seconds If you have experience with Kamaili...

    $70 (Avg Bid)
    $70 Giá đặt trung bình
    4 lượt đặt giá

    Sales Generation for VoIP Company - Paid on Results Only Telesales Target Market: Small businesses VoIP Services: Business VoIP services Sales Generation Expectations: 1-10 sales per week Skills and Experience Needed: - Proven track record in telesales and lead generation - Excellent communication and persuasion skills - Knowledge of VoIP services and their benefits for small businesses - Ability to identify potential clients and tailor sales pitches accordingly - Experience in meeting sales targets and working on a commission-based structure - Familiarity with CRM software for tracking leads and managing sales pipeline Project Details: - We are a VoIP company specializing in business VoIP services. - We are looking for a skilled telesales professional to generate sales for our compan...

    $20 / hr (Avg Bid)
    $20 / hr Giá đặt trung bình
    5 lượt đặt giá
    call center 1 ngày left

    I am looking to outsource my call center needs and requires both inbound and outbound calls. The nature of the calls will be primarily customer support and the expected volume of calls per day is less than 100. This project will require a call center that can provide quality service and excellent customer support. Any additional features or services the call center can offer will be greatly appreciated. The right team for this project should also be able to handle peak periods and ensure that customer inquiries are taken care of in a timely manner.

    $145 (Avg Bid)
    $145 Giá đặt trung bình
    30 lượt đặt giá
    WIFI RELAY NETWORK USING ESP32 MODULE 1 ngày left
    ĐÃ XÁC THỰC

    I am looking for a skilled freelancer to create a WIFI relay network using the ESP32 module that eill stream over 300 IPTV channels. The project requires the following: Range: The desired range of the WIFI relay network is 5 kilometers each repeater of the network. Devices: The network should be able to connect to a variety of devices, including smart home devices, smartphones, tablets, laptops, and computers. Capacity: The network should be able to handle a large number of devices connecting simultaneously, with an expected number of above 3000 devices. Ideal Skills and Experience: - Experience with ESP32 module and WIFI relay networks. - Proficiency in programming and configuring network settings. - Knowledge of smart home devices and their integration with WIFI networks. - Ability ...

    $500 (Avg Bid)
    $500 Giá đặt trung bình
    3 lượt đặt giá
    Deployment Debugging of a Asterisk based CRM 17 giờ left
    ĐÃ XÁC THỰC

    I am seeking an experienced developer to assist with the deployment debugging of an Asterisk based CRM. The specific issue that needs to be resolved is integration problems with other systems. Skills and Experience Required: - Proficiency in Asterisk and CRM systems - Strong knowledge of integrating systems with databases, third-party software, and hardware - Experience in troubleshooting and resolving integration issues - Ability to work under pressure and meet tight deadlines, as this project is of high priority.

    $135 (Avg Bid)
    $135 Giá đặt trung bình
    4 lượt đặt giá

    Hello! I am looking for a freelancer to test SIP VoIP products for me. Specifically, I need help testing SIP based speaker + microphone devices. I do have access to the necessary testing equipment and software, so I will not need the freelancer to provide any of these. Furthermore, my primary aim in testing these VoIP products is to evaluate how new features are functioning. If you think you can assist with this, I would be grateful if you could reach out and let me know. Thank you!

    $25 / hr (Avg Bid)
    $25 / hr Giá đặt trung bình
    18 lượt đặt giá

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