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 28,986 reviews, clients rate our VoIP Developers 4.9 out of 5 stars.
Hire VoIP Developers

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 28,986 reviews, clients rate our VoIP Developers 4.9 out of 5 stars.
Hire VoIP Developers

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    24 jobs found

    I'm in need of an experienced professional to install and configure Opensips on my Linux server for call routing purposes. Requirements: - Installation and configuration of Opensips - Setting up for effective call routing Ideal Skills: - Extensive experience with SIP proxy configuration - Proficient in Opensips - Strong understanding of call routing mechanisms

    $35 Average bid
    $35 Avg Bid
    5 bids

    I'm looking for a professional to set up a PBX and IVR system geared towards enhancing our sales and marketing efforts. The system should incorporate specific features such as call routing, voice menu options, and call recording. Key Responsibilities: - Configure the PBX and IVR system to support our sales and marketing initiatives. - Implement features including call routing, voice menu options, and call recording. - Ensure seamless integration with our existing CRM system. Ideal Skills: - Proven experience in setting up PBX and IVR systems. - Understanding of sales and marketing communication needs. - Proficient in CRM software integration. - Knowledge of call routing and recording technologies. Please note, this project is not just about technical setup. I'm looking for s...

    $242 Average bid
    $242 Avg Bid
    29 bids

    Be a part of energetic, fast expanding real estate team. Looking for a proficient and dynamic call center representative specialized in outbound sales. We only have one more position to fill and our primary focus of this role will be lead generation. Responsibilities: - Initiating outbound calls with the goal of generating new business. - Engaging potential customers and persuading them to consider our products/services. - Effectively communicating our value proposition. Ideal candidate: - Prior experience in sales call center is a must. - Exceptional communication and persuasion skills. - Ability to handle rejection and stay motivated. - Proficient in lead generation techniques. - Familiarity with CRM software is a plus. I look forward to receiving your application.

    $8 / hr Average bid
    $8 / hr Avg Bid
    16 bids

    I need a seamless integration of my PHP CodeIgniter CRM with Vicidial. Skills & Experience Required: - Proficient in PHP CodeIgniter - Experience with Vicidial - CRM integration expertise - Real-time data synchronization skills Integration Requirements: - Synchronization of contact details: New contacts added in the CRM should sync with Vicidial. - Call logs integration: I want all call logs from Vicidial to be reflected in the CRM. - Lead management: Full integration from submission of leads to receiving reports. Real-time Updates: I require real-time updates for all integrations. CRM Actions Triggering Updates in Vicidial: - Adding new contacts: Each new contact should be instantly available in Vicidial. - Updating contact details: Any change in the CRM should reflect in Vicidi...

    $518 Average bid
    $518 Avg Bid
    8 bids

    I'm looking for a skilled developer to complete and enhance a Flutter application that requires VOIP/SIP integration and advanced audio processing. Objective: - Implement VOIP/SIP integration; We're using Plivo as our provider. - Enhance audio processing features; Current Status: The core functionality is mostly built, but expert help is needed to refine and complete the audio features to allow for voice modulation during calls and to enable voice calls through VOIP/SIP technology. Key Features Needed: - VOIP/SIP Integration: Essential for the app's functionality. Prior experience with integrating VOIP/SIP into Flutter applications is a must. - Audio Effects: Implement a range of custom audio effects. Expertise in audio processing within Flutter is crucial. The ideal...

    $627 Average bid
    NDA
    $627 Avg Bid
    27 bids

    I need assistance in configuring my Cisco SX80 with its associated Video Conference Cameras and a new Cisco Web-EX navigator touch screen tab. This should be done over a partially configured IP interface network. Key tasks include: - Comprehensive network configuration and integration of all components - Ensuring compatibility and functionality with other network devices - Providing troubleshooting and optimization support as necessary Ideal candidates should have: - Extensive experience with Cisco equipment, particularly the SX80 - Proven track record in network configuration and integration - Strong troubleshooting and optimization skills

    $283 Average bid
    $283 Avg Bid
    15 bids

    I'm looking for a dedicated Customer Service Representative who can also handle various telephonic tasks. The primary focus of the role will be resolving customer issues effectively and efficiently. Key Responsibilities: - Answering incoming calls - Making outbound calls - Scheduling appointments The ideal candidate should have excellent communication skills, a problem-solving mindset, and experience in handling customer service roles. Experience in sales or upselling services is a plus but not a requirement. The ability to remain calm under pressure and maintain a positive attitude while dealing with challenging situations is crucial.

    $41 / hr Average bid
    $41 / hr Avg Bid
    45 bids
    VoIP PBX Setup with Asterisk
    5 days left
    Verified

    I'm looking for an expert in VoIP PBX setup with Asterisk. The primary purpose of this system is for business communications, and we're using a SIP trunk from Voxtelesys. Key Requirements: - Setting up the system to handle up to 10 concurrent calls. - Configuring Voicemail to email feature. - Provide detailed instructions on how to set up on a vps hosted on Holsinger. Ideal Skills: - Extensive experience with Asterisk and VoIP PBX systems. - Strong understanding of business communication requirements. - Previous work with Voxtelesys SIP trunk is a plus.

    $330 Average bid
    $330 Avg Bid
    25 bids

    I'm looking for an experienced professional to set up a complete Issabel call center and build an affiliate website for it. The center should be able to manage outbound calls efficiently and effectively. Key Responsibilities: - Design and implement a fully functional outbound call center using Issabel - Ensure the call center is ready and equipped for making outbound calls - Configure queue and agents in call center - build the affiliate website using desired stacks(possibly after configuring Issabel call center) Ideal Skills: - Extensive experience with Issabel call center - Proven track record in setting up outbound call centers - Knowledge of best practices in outbound call management - Web development

    $1919 Average bid
    $1919 Avg Bid
    8 bids

    I'm looking for an expert in Five9 VCC administration to set up the system and an IVR for my customer service operation. The primary goal is to improve our self-service options. This setup should effectively address several key areas: - Reducing our call waiting times - Enhancing our call routing accuracy - Providing better self-service options The self-service options we aim to implement include: - Automated responses for common queries - An Interactive Voice Response (IVR) system - Call routing based on customer input The ideal candidate will have extensive experience with Five9 VCC and IVR systems, and a proven track record of improving customer service efficiency. Your expertise will be instrumental in helping us achieve our customer service goals.

    $18 / hr Average bid
    $18 / hr Avg Bid
    2 bids

    I'm looking for a professional to create an online audio guest book for weddings. The platform should allow guests to record their messages easily and securely. Key Features: - **User Login and Authentication**: Each guest should have a unique login to ensure the privacy and security of their messages. - **Easy Recording Interface**: The recording interface should be intuitive and simple, accommodating guests of all ages and tech-savviness. Organization of Recordings: - The recordings should be timestamped and organized by date and time. Ideal Skills: - Experience in developing user-friendly online platforms - Audio technology expertise - Strong understanding of data privacy and security measures Freelancers with previous experience in creating similar platforms or projects will ...

    $2080 Average bid
    $2080 Avg Bid
    21 bids

    Integrate Asterisk Freepbx system with vtiger. Currently utilizing Twilio for service. Scope: currently need terminal settings configured properly with Twilio for calling. 1. Adjust Twilio settings for proper calling functions in Freepbx with my existing softphone. 2. Integrate FreePBX / Asterisk to integrate with vtiger. Contact me with a reasonable quote. After acceptance I will provide login details, and add extensions to practice prior to production mode. Thank you

    $127 Average bid
    $127 Avg Bid
    8 bids
    FreePBX
    4 days left
    Verified

    Hello, I need to setup FreePBX. In your response include the word asterisk otherwise i will not read it. Also, if you do not know freepbx and its firewall plus setting a sip carrier, please do not apply. I already have it up and running at Digital Ocean. I will give you access to the Server so you can modify Firewall correctly. I blocked all ports except for browser and maybe SSH is open. I need the Server secured and only to work with the FreePBX image installed. I saw brute force attacks the day I set it up. I need FreePBX to use my Twilio Account as the carrier. I need incoming calls, outbound calls and sms would be great if possible. I need to setup softphones as extensions. I use CounterPath, Linphone and Zoiper; so whichever is easier for you, I will use. Thank you,

    $153 Average bid
    $153 Avg Bid
    7 bids
    Vicidial Cloud Setup
    3 days left
    Verified

    I need a Vicidial Cloud setup for my business. I'm currently not certain about the primary purpose of this setup, however, it would potentially be used for customer support, sales and marketing or surveys and research. Thus, flexibility and scalability are key. Key Responsibilities: - Set up Vicidial Cloud with a focus on potential multi-use. - Ensure the system is capable of handling customer support, sales & marketing and surveys & research requirements. - Build in flexibility for future needs. Ideal Skills and Experience: - Extensive experience with Vicidial Cloud setup. - Knowledge in configuring systems for multi-purpose use. - Ability to design scalable and flexible systems. Please note that I have not yet decided on integrations with other software or tools, but pot...

    $39 / hr Average bid
    $39 / hr Avg Bid
    48 bids

    I need an expert in softswitch MORX14 and Asterisk to troubleshoot an issue I'm facing. Incoming calls are not going to the IVR, and I need them to play a recorded message. Ideal Skills and Experience: - Extensive experience with softswitch MORX14. - Proficient in troubleshooting Asterisk. - Able to configure Asterisk to redirect calls to a pre-recorded message. - Experience with IVR systems. Please note that the recorded message is a calling card IVR.

    $39 Average bid
    $39 Avg Bid
    6 bids

    I'm looking to set up a robust Call Center using Asterisk PBX. The PBX will be hosted on AWS and fully integrated with a user-friendly, web-based front-end dashboard. Key Requirements: - A comprehensive call center set up using Asterisk PBX - Hosting on AWS using services like Amazon EC2, Amazon S3, and Amazon RDS - Development of a web-based dashboard with features like: * Call monitoring and reporting * User management * Real-time analytics Ideal Skills: - Extensive experience with Asterisk PBX - Proficiency in AWS services, especially EC2, S3, and RDS - Expertise in developing web-based applications - Knowledge in implementing call center solutions - Strong understanding of real-time analytics and reporting systems.

    $569 Average bid
    $569 Avg Bid
    8 bids

    We have an Issabel installed on CentOS 7. We need a freelancer who has good experience in Issabel, PBX, VoIP and softphone configuration. It's to configure outgoing trunk in Issabel so that make it to have a outgoing call. Please send a bid only if you have experienced much in configuration Issabel PBX trunk. Write "PBX" at the top of your bid sentences.

    $271 Average bid
    $271 Avg Bid
    11 bids

    I need a professional to assist me in setting up a Virtual Private Server (VPS) running Ubuntu 22.04 LTS. The project is in its first phase and involves the basic installation and configuration of Odoo, Next cloud, and a VoIP system with robust security measures need to be put in place to safeguard the server and software. In phase 2, the system will be customized and automations setup (heavily Odoo) to ensure cohesive data between platforms and seamless operations. After development and preliminary testing, we will conduct soft roll out. Phase 3, modifications and adjustments/bugs found during soft roll out, training and full roll out. Key Requirements: - Install and configure Ubuntu 22.04 LTS on VPS - Set up Odoo community edition with emphasis on Website, CRM, and Accounting Modules - ...

    $424 Average bid
    $424 Avg Bid
    37 bids

    I'm facing an issue with my Cisco Switch which is currently not connecting to the internet. All physical connections and cables have been checked and are in order. Ideal skills for this job include: - Extensive knowledge of Cisco devices, particularly switches - Proficient in network troubleshooting and configuration - Ability to identify and resolve connectivity issues promptly Experience in handling similar network issues will be a plus. Looking forward to your proposals.

    $44 Average bid
    $44 Avg Bid
    29 bids

    I need a skilled professional to integrate my Yeastar PBX system with a GoIP SMS gateway. The aim is to send and receive SMS via API seamlessly Key Responsibilities: - Implement SMS sending and receiving capabilities on the Yeastar PBX through the GoIP Gateway. - Ensure the integration is robust, reliable, and handles SMS traffic efficiently. Ideal candidates should have: - Strong experience with Yeastar PBX systems. - Proven track record with GoIP SMS Gateways. - Proficient in API integrations. - Excellent problem-solving skills to handle potential technical challenges.

    $273 Average bid
    $273 Avg Bid
    30 bids

    I'm in need of a Call Center Agent with experience handling personal injury clients, specifically those involved in motor vehicle accidents. Key Requirements: - Basic proficiency in English and Spanish - Expertise in using VICI Dialer - Experience with personal injury cases - Ability to manage initial client contact Ideal Skills: - Communication skills - Empathy and understanding - Problem-solving abilities Your primary responsibility will be managing initial contact with clients. You must be able to handle calls with a basic level of English and Spanish. Experience dealing with personal injury clients is a significant plus, as is familiarity with the VICI Dialer.

    $20 / hr Average bid
    $20 / hr Avg Bid
    9 bids

    I'm looking for an experienced Asterisk and VICIDIAL developer to customize the API for user interface integration, specifically for the dashboard and the call control panel. Key requirements: - Integrate the call control panel with the API to enable smooth call management. - Modify the dashboard for real-time call monitoring via the API. Ideal skills and experience: - Proficiency in Asterisk and VICIDIAL with a strong background in API customization. - Experience with user interface integration. - Capability to enhance the dashboard with real-time call monitoring features.

    $21 Average bid
    $21 Avg Bid
    3 bids
    SIP over TLS to AcerUC PBX
    1 day left
    Verified

    I need assistance with establishing a SIP over TLS connection to my AcerUC PBX server. The server is running on MacOS and utilizes username and password for authentication. My goal is that make a call from mobile app, and i can heir my voice on macos by python voip. I have encountered an issue that I need help with. More details can be found in this GitHub issue: Ideal skills for this project include: - Proficiency with SIP and TLS protocols - Experience with AcerUC PBX server - Deep understanding of MacOS systems - Knowledge in Python and pyVoIP library - Familiarity with Github and issue troubleshooting Please, if you have the required experience and skills, I look forward to your bid.

    $260 Average bid
    NDA
    $260 Avg Bid
    6 bids

    My Raspberry Pi 4 isn't booting from a USB flash drive containing a FreePBX image file. I'm not sure if I've successfully booted from a USB drive with other operating systems before. I need a professional with: - In-depth knowledge of Raspberry Pi, particularly the Pi 4 - Experience with FreePBX - Proficiency in diagnosing boot issues - Expertise in USB boot processes Your task will be to troubleshoot the issue and get the Pi booting from the USB.

    $182 Average bid
    $182 Avg Bid
    17 bids

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