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 24,513 reviews, clients rate our VoIP Developers 4.83 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 24,513 reviews, clients rate our VoIP Developers 4.83 out of 5 stars.
Hire VoIP Developers

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    10 jobs found

    I need a straightforward phone portal dedicated to technical support. When customers call, the system should guide them through a clear voice menu, offer self-service troubleshooting where possible, and route them to a live agent when needed. Core needs • Intuitive IVR flow focused on technical issues for my products. • Cloud deployment on a platform such as Twilio, Plivo, or a comparable service so I can manage it remotely. • Administrative dashboard that lets me update prompts, add or remove menu options, and view basic call reports. Nice-to-have ideas (open to your recommendations) include tying the portal into an existing help-desk ticketing tool, sending callers a knowledge-base article by SMS, and adding simple analytics to spot recurring problems. Pleas...

    $2156 Average bid
    $2156 Avg Bid
    170 bids

    I'm looking to integrate Twilio with Cisco Call Manager for voice communication, specifically to set up call routing. Key Requirements: - Utilize Twilio SIP for connecting with Cisco Call Manager - Implement call routing features as per our requirements Ideal Skills and Experience: - Experience with Twilio and Cisco Call Manager - Strong understanding of SIP protocols - Expertise in call routing configuration

    $89 / hr Average bid
    $89 / hr Avg Bid
    39 bids

    Our worksite inside Newark Liberty International Airport (EWR) is suffering repeated network drop-outs that disrupt daily operations. I need an experienced IT technician who can come on-site, trace the root cause of the connectivity issues, and get every device reliably back online right away. Here is what the visit will involve: • Diagnose the physical and logical network path from ISP hand-off through our switch rack and out to several workstations and VoIP phones. • Identify and correct cabling, switch, router, or configuration faults responsible for the disconnections. • Validate stability once fixes are applied and supply a brief post-visit report outlining what you found and how you resolved it. You should be comfortable working around standard enterprise gear (...

    $689 Average bid
    $689 Avg Bid
    18 bids

    I need a skilled technician to install a VX2200 GSM module on my Videx intercom system. The primary functionality I want to enable is call forwarding to another UK landline number, with immediate forwarding. Key Requirements: - Expertise in intercom systems, specifically Videx - Experience with VX2200 GSM module installation - Ability to configure immediate call forwarding to mobile devices Ideal Skills and Experience: - Background in telecommunications or security systems - Previous installation experience with Videx and GSM modules - Strong problem-solving skills and attention to detail Please ensure the system is fully operational and test all functionalities post-installation. The location is 86-90 paul Street, London, EC2A 4NE

    $814 Average bid
    $814 Avg Bid
    5 bids

    We run a fast-growing online pharmacy and need a male freelance tele executive who can stay on top of the constant flow of medicine orders. Your core responsibility will be end-to-end order processing: answering inbound calls, confirming prescriptions, entering the order into our system. Engagement Type: Freelance / Part-time Mode of of Work: Remote Pay : Pay-per-call basis Responsibilities Assist customers in placing medicine orders. Verify order details and coordinate order processing. Provide courteous customer support and resolve basic queries. Maintain confidentiality of customer information. Requirements Basic knowledge of medicines and healthcare products. Good communication skills in English and Hindi (knowledge of regional languages is an added advantage). Good interp...

    $406 Average bid
    $406 Avg Bid
    10 bids
    Managed IT Cold-Calling Sales
    3 days left
    Verified

    I run a fast-growing startup that delivers Managed IT Services to small and mid-sized companies. To accelerate growth I need someone who can confidently pick up the phone, uncover decision-makers and move the conversation all the way to a signed agreement. Your day-to-day will be straightforward: identify fresh prospects across law, finance, retail, healthcare, engineering—really any sector with an IT pain point—introduce our offer and keep the dialogue alive until the deal closes. When you talk to them, lean hard on the three benefits that set us apart: • Cost-effectiveness • 24/7 support • Custom solutions I’ll provide a concise service brief, pricing guidelines and access to our quoting tool; you bring a proven outbound system, your own calling s...

    $527 Average bid
    $527 Avg Bid
    13 bids

    Position : MAINFRAME NETWORK JOB DESCRIPTION :- We are looking for a candidate that has experience in GDPS and REXX. 1. Installation, upgrade and maintenance of VTAM, TCPIP, OSA and related products 2. Sound knowledge in SMPE 3. Interface with operations, logs and automation jobs. 4. Good knowledge of related software and tools. 5. Good experience with software maintenance. 6. Experience in backup and recovery processes for subsystems. 7. Knowledge in resource definition, security and other administration tasks. 8. Strong Networking knowledge, skills in Printers configuration, FTP, SMTP, SNMP configurations. 9. Experienced technician with basic skills in most and more advanced skills in some of the following: a. ...

    $837 Average bid
    $837 Avg Bid
    10 bids

    I'm moving and need help installing several devices in my new home. Required Installations: - Flat-screen TV - Laptop - VoIP phone Ideal Skills and Experience: - Experience with home tech installation - Familiarity with flat-screen TV mounting and setup - Knowledge of laptop configuration and VoIP phone setup - Attention to detail and reliability and set up printer Looking for someone who can ensure all devices are properly installed and ready to use. Please provide any relevant experience in your bids.

    $246 Average bid
    Local
    $246 Avg Bid
    4 bids

    I need a working SIP-edge on an Ubuntu 22 / 24 VM that lets MicroSIP register over TLS even in networks where standard SIP/VoIP traffic is blocked. The edge will terminate the TLS leg, proxy the signalling to my existing VoIP switch over plain UDP, and keep media flowing through RTP Engine. What I will provide • A clean VM (public IP, sudo access) • SIP account details for registration tests • Any public cert/key material you need for stunnel or Kamailio TLS Scope of work – Install and configure Kamailio as the front-end SIP proxy. – Enable TLS support so MicroSIP can register and place calls securely. – Use RTP Engine to anchor media and make sure audio is two-way. – Deploy stunnel (or an equivalent TLS wrapper) if it...

    $69 Average bid
    $69 Avg Bid
    3 bids

    Ich möchte meine Microsoft-Umgebung in einem Zug professionell aufsetzen und harmonisieren. Konkret geht es um vier zusammenhängende Aufgaben: 1. Outlook und Microsoft Teams sollen nahtlos miteinander verbunden werden, sodass Kalender-Einladungen, Besprechungen und Chats direkt ineinandergreifen. Dabei nutze ich das neue Outlook und will es exakt auf meine Bedürfnisse zuschneiden – von angepassten E-Mail-Ansichten bis hin zu optimierten Kalender-Darstellungen. Ich freue mich hier auch über praxisnahe Tipps & Tricks, die den täglichen Workflow erleichtern. 2. In Microsoft Teams soll meine geschäftliche Telefonnummer eingebunden werden. Ich benötige also die vollständige Telefonie-Einrichtung (Anrufweiterleitung, Voicemail, ggf. Dial-Plan),...

    $50 / hr Average bid
    $50 / hr Avg Bid
    27 bids

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