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 27,927 reviews, clients rate our VoIP Developers 4.82 out of 5 stars.
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    18 jobs found, pricing in USD

    I am looking for an experienced IT professional to help me upgrade my Cisco ASA5525, currently running version 9.x. I am not looking for any specific features or functions to be added or improved with the upgrade, just want to bring the system up to date with the latest version. I have a preferred timeline of within a month for the upgrade to be completed. If you think you are the right person for the job, don't hesitate to get in contact and let me know how you can help.

    $455 (Avg Bid)
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    18 bids

    Project Description: Improve audio quality over RTP stream Overview: I am looking for a skilled professional to help me improve the audio quality of a real-time transport protocol (RTP) stream. The current audio quality is poor, and it is critical for me to enhance it. Project Requirements: The ideal candidate should have experience in the following areas: 1. Audio Streaming: - Extensive knowledge and expertise in working with RTP streams - Familiarity with audio codecs and their optimization 2. Network Protocols: - Understanding of UDP (User Datagram Protocol) - Proficiency in configuring and optimizing UDP to ensure seamless audio transmission 3. Azure TTS Integration: - Experience with Azure Text-to-Speech (TTS) services 4. Problem-Solving Skills: - Strong anal...

    $215 (Avg Bid)
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    23 bids

    I am looking for a VoIP expert with experience in both Issabel and Odoo to integrate Odoo with our existing Issabel setup. The ideal freelancer for this project should have expert level expertise in VoIP and be familiar with both Issabel and Odoo. Specific requirements for this project include: - Integrating Odoo with our existing Issabel setup - Troubleshooting and resolving any VoIP issues that may arise during the integration process The freelancer should have the following skills and experience: - Expert level knowledge and experience in VoIP - Extensive experience with Issabel and Odoo - Strong troubleshooting skills and the ability to resolve any technical issues that may arise If you have the required expertise and experience, please bid on this project.

    $729 (Avg Bid)
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    6 bids
    devOps asterisk vosk stt tts 6 days left
    VERIFIED

    I am looking for experienced devOps that can work on setting up Asterisk, implementing Vosk STT, and setting up TTS. I have a server in place for the project, so devOps with expertise in this required infrastructure is of utmost importance. The ideal candidate should have good skills in Asterisk, Vosk STT, and TTS in order to execute the project successfully and to my satisfaction. Only applications from expert level devOps will be accepted.

    $732 (Avg Bid)
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    15 bids

    I am looking for a skilled professional to troubleshoot and reconfigure my AVAYA ipo500 and AVAYA vantage K165& K175 phones. Specific Requirements: - Resolve configuration errors that are currently affecting the systems - Ensure smooth operation of the phones without any call dropping or poor audio quality issues Skills and Experience: - Strong expertise in AVAYA ipo500 and AVAYA vantage K165& K175 phones - Proven experience in troubleshooting and resolving configuration errors - Ability to work under urgent deadlines and with minimal documentation Note: The task is of immediate priority and needs to be completed within 1-2 days.

    $50 (Avg Bid)
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    5 bids

    Hello, Hi, I'm looking for a Sonus / Ribbon SBC specialist to help me implement the following: - Hide caller hide / anonymous calling - Convert 183 Session progress to 180 Ringing - Simultaneous ring - Play music on Hold on the SBC - Call forking based on ad attribute - Change caller ID based on SDP IP address - Block outbound calls based on SDP IP address - Manipulate sendonly to sendrecv This needs to be done on a Ribbon SBC Swe Edge Let me know if you fit to the description. Regards

    $41 / hr (Avg Bid)
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    11 bids
    Softswitch Setup 5 days left
    VERIFIED

    I am looking for an expert freelancer to help me set up a VoIP switch for my project. I am open to suggestions and do not have any specific requirements. Skills and Experience: - Expert level knowledge in setting up VoIP switches - Strong understanding of softswitch technology - Experience in configuring and customizing VoIP switches - Knowledge of SIP protocols and codecs - Familiarity with network routing and troubleshooting - Ability to integrate the softswitch with existing systems and infrastructure

    $24 / hr (Avg Bid)
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    19 bids

    Need Voip nextiva num for verification

    $7 / hr (Avg Bid)
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    3 bids

    I am looking for a person to help me by creating an application in jambonz and who has knowledge of voip, node red to make improvements to the application and create an ivr with chatgpt.

    $21 / hr (Avg Bid)
    $21 / hr Avg Bid
    16 bids

    Need to install and then configure so I can receive calls. Immediate work.

    $60 (Avg Bid)
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    10 bids

    My company is in need of IVR call automation to better serve our customers. We anticipate an average call volume of less than 100 per day. We are not sure whether we need an existing script for the automated call system or if one will need to be developed. We need the help of a freelancer with experience in this type of project in order to ensure it is implemented successfully.

    $478 (Avg Bid)
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    22 bids
    Voip ports needed 3 days left
    VERIFIED

    Need a voip provider who can provide tier 2 voip rates with 3500ports

    $1099 (Avg Bid)
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    14 bids

    Hi I am looking for someone to set up FreePBX and get it to work I have a SIP Phone number which is ready to be connected to this I want the person to configure all necessary things t get this working including setting up firewall rules etc Thank you

    $211 (Avg Bid)
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    16 bids

    Hi Team We got this setup by someone but they are unable to complete We need someone to configure the trunks, inbound and outbound calls etc Thank you

    $142 (Avg Bid)
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    10 bids

    Project Title: Vicidial press 1 solution with CRM Description: I am looking for a freelancer who can help me integrate Vicidial with our current CRM system. We currently use an Other (please specify) CRM, and it is crucial that the integration is seamless and efficient. The main purpose of the Vicidial press 1 solution is Lead Generation. We want to optimize our lead generation process and ensure that our sales team can easily follow up with potential customers. Ideal skills and experience: - Strong experience in integrating Vicidial with various CRM systems - Proficiency in working with Other (please specify) CRM - In-depth knowledge of lead generation strategies and best practices - Ability to customize and configure Vicidial to meet our specific requirements - Excellent communicati...

    $33 / hr (Avg Bid)
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    29 bids

    I am looking for a voice call assistant to provide customer support for my company. Requirements: - Experience in customer support or sales calls - Ability to schedule appointments - Familiarity with the company's products and services Responsibilities: - Answering incoming calls and assisting customers with their inquiries - Making outbound sales calls to potential customers - Scheduling appointments for clients Guidelines: - I will provide guidelines for the voice calls, so you should be able to follow them accurately. Availability: - The service will be required for less than 4 hours per day. Skills: - Excellent communication skills - Strong phone etiquette - Ability to handle multiple calls simultaneously - Attention to detail If you have experience in voice call assistance...

    $3 / hr (Avg Bid)
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    23 bids

    I am looking for a freelancer who can configure the Avaya K175 Vantage with both handset and kiosk mode. Skills and Experience: - Experience in Avaya K175 Vantage configuration - Knowledge of handset and kiosk mode configuration - Ability to follow specific manual/guidelines provided by the client The freelancer does not need to provide any training on how to use the configured features.

    $133 (Avg Bid)
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    11 bids

    We want to have a tool that can deploy easily new instances of PBX. In each instance we will need to have a panel where admin of instance will be able to control following: - add/ remove extensions - lanch calls and choose SIP lines to make the call - active/ quit recording - set Ivr - set queue - Add/ remove SIP lines We will need to control the panel by Api and be able to send calls by api with parameter instance, extension and phone number to reach and it should call the extension to start the call. we will also need an endpoint to active/ deactivate instance and if Instance is off, user could not access his portal.

    $1373 (Avg Bid)
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    13 bids

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