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!

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    24 pekerjaan ditemukan, seharga USD
    Rapid FreePBX Setup and Consultancy 6 Hari left
    TERVERIFIKASI

    As fast as possible, I need a professional to assist in setting up FreePBX. Key tasks essential for this project will include: - Installation and configuration - Call routing and extensions - Integration of FreePBX with a CRM system that is yet to be determined In addition, assistance is required for setting up VoIP softphone. Familiarity with popular CRM platforms like Salesforce, HubSpot, Zoho CRM is an asset, as one of them may be chosen for integration. Absolute proficiency in setup, call routing, extensions and integration with CRM systems is a must for this job. I am looking for a fast turnaround on this project, so previous experience achieving quick deployment is highly recommended. It is also necessary to be able to advise our mobile developer if he has questions about PBX ...

    $160 (Avg Bid)
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    Hello, I operate a fax communication system leveraging Hylafax, integrated with an Asterisk server and iaxmodem, all running on Alpine Docker. While our outgoing fax functionality performs flawlessly, we are encountering persistent issues with incoming faxes. Specifically, incoming fax pages frequently get cut off midway, resulting in incomplete document reception. We are in search of a seasoned Hylafax professional who can diagnose and rectify this particular issue. Expertise in managing Alpine Docker environments and Asterisk/iaxmodem configurations will be highly regarded. Desired Expertise: Demonstrable experience with Hylafax, especially in fixing issues related to incoming faxes. Deep knowledge of Asterisk and iaxmodem. Proficiency with Docker containers, preferably on Alpine. Ab...

    $28 / hr (Avg Bid)
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    VoIP Efficiency & Quality Upgrade 6 Hari left
    TERVERIFIKASI

    I am seeking a VoIP consultant for improvement of my existing computer-based VoIP system. The purpose of the project is twofold - improved communication efficiency and enhanced call quality. Key Tasks: - Analyzing the current computer-based system setup - Implementing the connection of Physic SIP to asterisk on the cloud for enhanced call quality Ideal Skills and Experience: - Proven experience as a VoIP consultant - Excellent knowledge of IP PBX system - Experience with connecting Physic SIP to asterisk on the cloud - Ability to improve communication efficiency and call quality. Kindly submit your proposal outlining your plan to achieve these two goals along with your previous relevant work. Looking forward to finding a VoIP specialist who can provide a swift and efficient upgrade t...

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    Vicidial Expert Needed Expert Needed 6 Hari left
    TERVERIFIKASI

    Using another dialer now and want to see if vici can improve our stats in terms of connection, answers, voicemail detection, autorotate to local area codes, spam detection etc.. Basically looking past the basic setup and someone who has used vici and knows how to add code into the system. Put "I can help" in the first line so I know you read the entire job post. Also please detail some things you could suggest in terms of adding codes. We are calling home owners in the US.

    $13 / hr (Avg Bid)
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    Looking for a tele-caller to set up appointments with small manufacturing units. Full time Job Fixed salary Fixed time Incentives Work from home

    $335 (Avg Bid)
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    I am looking for an expert in Yeastar p560 VoIP systems to implement a solution for a trunk to trunk call forwarding inclusive of Direct Inward Dialing (DIDs). The task is troubleshooting headers, the trunks / solution is already setup. The key functionality includes: - Trunk to trunk hand off with headers (in and out) - Forwarding calls over VoIP Your expertise should span the configuration of VoIP systems for diverse and specific users. Knowledge of wireshark and pcap analysis, understanding of SIP headers. With your understanding of my needs, you'll enable seamless communication within my organization. Prior experience in similar setups is a necessity. Your bid will be a value-add to the success of this project.

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    I'm embarking on designing a 3CX mobile application that effectively displays the caller's information. The key features of the project include: - Prominently displaying the name and number of the caller. - The system should be designed to extract this information in an efficient and accurate manner. - Exploration and implementation of apt algorithms for proper operation. The ideal candidate for this job would be familiar with 3CX systems, mobile application development, and has a strong grasp on caller ID technology. A solid background in UI/UX design would also be beneficial, given the need for a user-friendly interface. A proven track record in similar projects will undoubtedly gain my consideration.

    $46 (Avg Bid)
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    I am seeking a VoIP expert knowledgeable in 3cx systems. This project involves building and implementing a custom caller ID display that can show caller’s name and number. Key features: - Custom caller ID display - The ability to show both caller's name and number Design wise, I am interested in a customizable design allowing future modifications if required. Ideal candidate should: - Be experienced with 3cx VoIP systems - Have a solid understanding of caller ID functionality - Possess expertise in customizable design development. Please provide examples of previous similar projects if available. Looking forward to discussing in detail.

    $170 (Avg Bid)
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    MAX 20 HOURS OF WORK PER MONTH FOR NOW. ONLY APPLY IF THAT IS OK WITH YOU. I'm in search of a skilled call center agent who primarily makes outbound calls for customer service follow-ups. Key Responsibilities: - Handling outbound calls promptly and professionally - Following a provided script, but adapt as necessary based on customer feedback and interactions Ideal Skills: - Excellent communication skills - Ability to think on the fly and adapt scripts - Prior experience in a call center environment or customer service role is desirable Note: The script provided will be loose so agents will need to be capable of adapting it to suit each unique customer interaction.

    $16 / hr (Avg Bid)
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    softphone source code 4 Hari left
    TERVERIFIKASI

    I'm in need of an experienced developer to design and build a softphone application. Key Project Requirements: - As development requirements have not been specified, it is assumed that the application should be compatible across all main operating systems like Windows, MacOS, and Linux. - Softphone's features weren’t specified, but usually, a robust softphone should have features like call recording, conference calling, and instant messaging. Ideal Skills and Experience: - Proven experience in creating effective softphone applications. - Strong knowledge of cross-platform development. - Familiarity with voice-over-IP (VoIP) technologies and protocols. Application Instructions: Even though not specified, it's generally best to include your past work, detailed proj...

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    SIP Registration & Call Functionality 4 Hari left
    TERVERIFIKASI

    As the project owner, I am looking for a seasoned Flutter developer adept in creating applications for both Android and iOS platforms. My project primarily involves: 1. SIP Account Registration: You'll be required to implement a feature that allows users to easily register a SIP account. 2. Call Functionality: You will be in charge of creating a phone call feature that operates using a SIP server. 3. Simple User-Interface: The app should have a user-friendly interface, aiming for simplicity and easy navigation. The ideal candidate should have proven experience working with Flutter and SIP technology, and should be proficient in developing applications for both Android and iOS.

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    I'm in urgent need of an individual adept in Voipfone SIP services and Java. Unfortunately, I don't have access to the Voipfone documentation and API credentials. Hence, a freelancer who is already versed in said provider would be preferred. The ultimate goal is to create a compact Java project that fetches caller ID information from Voipfone's SIP services. Key responsibilities: - Creating Java code for Voipfone SIP caller ID queries - Overcoming lack of direct API access Desired skills and experience: - Expertise in working with Voipfone services - Proficient in SIP technology - Strong knowledge in Java - Ability to work around API limitations effectively The project time frame is ASAP. So a freelancer capable of prompt and efficient service delivery will be highly app...

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    USB Port Forwarding Assistance Needed 3 Hari left
    TERVERIFIKASI

    I'm currently struggling with a few issues related to port forwarding and could really use some expert assistance to sort it out. I've been unable to access a specific device, my headset, through my computer's USB ports. This has been a hindrance in achieving smooth audio communication. Key tasks for completion: - Troubleshoot and rectify my current port forwarding setup. - Assist in setting up USB ports for headset connection. The ideal freelancer for this role would have prior experience in troubleshooting port forwarding issues, specifically related to audio devices like headsets. They would also need to have strong communication skills as they might need to guide me through some processes over the phone. Overall, expertise in network configurations and patient guidan...

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    I am in need of a professional proficient in CGrates who will not only configure the system but also verify that each feature operates smoothly. Your duties must include, but are not limited to: - Masterful set-up of CGrates - Ensuring real-time account balance functionality - Implementing comprehensive billing reports Additionally, this configuration will involve 1 telecom operator or providers, so previous experience working with multiple providers would be ideal. For a successful execution of the project, in-depth knowledge and practical experience with CGrates is a must. I am looking forward to your expert contribution.

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    Versatile VOIP Gateway Development 3 Hari left
    TERVERIFIKASI

    I am seeking an experienced and knowledgeable freelancer to develop a VOIP gateway, capable of handling both voice calls and data transmission. While the specific network type (GSM or CDMA) has not been finalized, your ability to work with either technology would be of significant value. Ideal skills and experience: - Strong understanding of GSM and CDMA technologies - Prior experience in VOIP gateway development - Capable of ensuring efficient data transmission and crystal-clear voice call quality When applying, while not mandatory, presenting details around your past projects, relevant experience, or a project proposal would aid in establishing your fit for the job.

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    I am searching for a skilled software developer with a strong background in Asterisk, Dialer, IVR and VOIP technologies. Although I haven't specified particular functionalities, general familiarity with call routing, call recording and interactive voice response (IVR) would be beneficial. The ideal candidate for this job should be proficient in: - Designing, implementing, and maintaining Asterisk software - Developing dialer functionalities, with emphasis on auto dialing, click-to-dial, and predictive dialing - Ensuring system is up-to-date and secure Freelancers who apply should provide any past work, detailing their experience and including project proposals, if any. If you believe that you have the expertise to effectively take on this project, I encourage you to submit...

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    I'm aiming to use my iPhone for my business needs and am seeking help to set up several VOIP numbers. I have a need for more than two numbers as my business dealings are varied and require different lines of communication. - Requirement Specifications: * Detailed guide on setting up multiple VOIP lines on an iPhone. * Understanding of business-level communication needs. * Suggestions on how to manage multiple calls and numbers efficiently. - Skills and Experience: * Experience with iOS, specifically VOIP setting configurations. * Knowledge of telecommunications, particularly business phone systems. * Ability to explain complex tech processes in a simple, comprehensible manner. The aim is for me to handle multiple business calls seamlessly on one device. Your exper...

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    SRP Consulting 2 Hari left
    TERVERIFIKASI

    We are looking for consultants - Consultant preferred from India. 1) Consultant - SRP Experience in working with development/implementation of SCP and SRF. Experience in handling interfaces of SCP SRF like INAP, SIP, Webservices, Websockets WebRTC (in the context of SCF and SRF) ISUP over SS7 Experience in Dialogic API for SS7 and INAP Experience in using JSS7 API from RestComm or it's variant of Mobius JSS7 or any of the varient IVR implementation with Freeswitch on SS7 Knowledge and work experience on YATE SS7 implementation. Anyone with following expereince and skills also may apply Consultant - CRBT worked in CRBT and similar products Having knowledge in the following protocols a) INAP over SIGTRAN/SIP b) SIP/RTP c) ISUP over E1 3) M3UA over SIGTRAN Knowledge on working with Fr...

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    I'm seeking an adept developer to build a Voice over IP (VoIP) application for both Android and Apple phones. Key aspects of the project include: - Including video calling feature. - Incorporating a unique door unlock command. To ensure seamless functionality, the door unlock mechanism should operate through sending a specified command. Proficiency in VoIP applications, experience with video calling functions, and knowledge of secure command features are vital for the job.

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    Application for Asterisk 18 1 hari left
    TERVERIFIKASI

    We need to create an Asterisk aplication (v18) for Service at workshop by appointment for vehicles. This aplication must have voice recognition in English /Spanish language and Text to speach language with Google technology. Functionality: i) Welcome. ii) Select Languague. iii) Request Data: * Type of vehicle * City * Car licence plate * Telephone number. * Date request. * Time request. d) System will confirm first date/time available and customer will confirm. At this time, application will not have conectivity with real system....only must confirm next day and time users told. But it will have errors control, confirmation recognized data, etc..... Th...

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    We're searching for an experienced Telecaller to handle outbound customer service tasks. - Primary responsibilities: The Telecaller will be expected to make outbound calls, resolve customer complaints and schedule important appointments. - Ideal Expertise: Previous experience in customer service is crucial. The ability to professionally manage and resolve customer complaints is a must. Strong organizational skills are also required for efficient appointment scheduling. - Project expectations: This position entails regular customer interactions. The perfect candidate must be comfortable speaking with customers, exhibit excellent communication skills and display a patient and customer-friendly demeanor. The Telecaller will not be required to manage inbound calls. In essence, we�...

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    I am looking to set up a PowerMTA server with integrated MailWizz, focusing on bulk marketing email delivery. Beyond set up, comprehensive documentation explaining procedure in a simple-to-understand way is key to enable future self-service. Requirements include: - PowerMTA installation and set up on my Linode server - MailWizz integration with PowerMTA - Documentations on setup procedures and email delivery management/actions - Expertise in bulk email marketing deployment validate all dns records Configuration: After installation, you need to configure PowerMTA according to your requirements. This includes setting up IP addresses, domains, authentication mechanisms (like SPF, DKIM, and DMARC), bounce processing, and other delivery settings. This step often involves editing the conf...

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    I need a specialist to develop an inbound call center dialer to optimize call efficiency. The key elements of this task include: - Maximizing efficiency: The primary objective of this project is to streamline call handling to boost efficiency, greatly reducing idle time between calls. - Email Integration: The dialer needs to have robust email system integration capabilities to facilitate seamless outbound communication. - Call Recording: The dialer should possess call-recording functionality, facilitating quality assurance and improving our customer service efforts. Prospective freelancers are ideally experienced in telecommunication systems, dialer technology, integration of systems, and understand general call center operations. Experience specifically with email system integration a...

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