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!

De 24,529 opiniones, los clientes califican nuestro VoIP Developers 4.83 de un total de 5 estrellas.
Contratar a 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!

De 24,529 opiniones, los clientes califican nuestro VoIP Developers 4.83 de un total de 5 estrellas.
Contratar a VoIP Developers

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    16 trabajos encontrados

    I already have a Grandstream UCM-series IP PBX on site and reachable for remote work. The hardware is up, the , but the system is still running on factory defaults. I need a Grandstream-savvy engineer to jump in and complete the core setup: • Create and test all user extensions (SIP and any analog FXS ports that may be required). • Build a clean inbound route so external calls land where they should. • Design and activate a simple operator/IVR menu that greets callers, routes them to the right extension or ring group, and falls back to voicemail if unanswered. Please handle dial plans, basic voice prompts, time conditions, and any minor tweaks that are typically part of making the above work smoothly. I’ll supply extension lists, Remote access is available via Te...

    $26 Average bid
    $26 Oferta promedio
    21 ofertas

    I’m building a small customer-care desk for a telecommunications service and I need a warm, friendly FEMALE voice that sounds naturally North-American—think clear United States accent, with the flexibility to soften into Canadian when a caller’s location makes that helpful. Your role will be to pick up inbound calls and return the occasional voicemail, resolve everyday service inquiries, and keep the experience smooth from “hello” to “good-bye.” Because our product is telecom, previous experience talking customers through network, SIM, or billing questions will let you succeed from day one. We work entirely online, so you’ll log each interaction in our CRM, jump on VoIP through your own reliable headset and broadband connection, and esc...

    $10 Average bid
    $10 Oferta promedio
    4 ofertas

    I need an Android application that lets users talk to each other in real time. The experience should feel as close to a normal phone call as possible, with rock-solid, low-latency audio that holds up even on average mobile connections. One crucial requirement is support for group calls; several participants must be able to join the same room, speak freely, and hear one another without noticeable lag or echo. If you have already built something similar—or, as I mentioned, completed a “brikri” project before—please let me know, because proven experience with live voice stacks will save both of us time. Whether you prefer WebRTC, Agora, Twilio Voice, Jitsi, or another VOIP backbone, I am open to whichever engine delivers the most stable performance on Android. Just bu...

    $1230 Average bid
    $1230 Oferta promedio
    230 ofertas
    3CX Voicemail Troubleshooting Help
    5 días left
    Verificado

    I’m running a 3CX Professional installation where voicemails have suddenly stopped being stored on the server and are no longer reaching users’ mailboxes. The PBX hasn’t been updated recently, so this isn’t tied to a new build or hot-fix. What I’ve already covered: I verified the voicemail settings, restarted the whole system, and combed through the logs, yet I still can’t see any obvious misconfiguration or error that explains why messages vanish. Here’s what I need from you: • Pinpoint the exact cause of the voicemail failure (storage path, permissions, SMTP issues, service crashes—whatever the root happens to be). • Apply or walk me through the fix during a remote session so that new voicemails are both retained on the PBX ...

    $15 / hr Average bid
    $15 / hr Oferta promedio
    35 ofertas

    I'm looking for a VOIP system to automate customer interactions for my micro-company selling CBD food supplements and cosmetics. The system should: - Answer customer inquiries - Process orders - Provide product recommendations Communication methods: - Voice calls - Email Response type: AI-generated responses Ideal skills and experience: - Experience with VOIP systems - Familiarity with AI response generation - Background in e-commerce, especially in the CBD or supplement industry I prefer Claude AI

    $452 Average bid
    $452 Oferta promedio
    125 ofertas

    I’m organising an intensive VMware Cloud Foundation (VCF) programme for an advanced technical audience and would like an experienced instructor to run the sessions live online for a group of about 11-20 engineers. What I need from you • A concise trainer profile highlighting VCF implementation or architecture projects you have led, past teaching engagements, certifications, and any customer references you can share. • A full course outline following the order below, showing sub-topics, lab time and estimated hours per section: – VCF Architecture Deep Dive – Deploying VMware Cloud Foundation – VCF Management Domains and Workload Domains – Lifecycle and Automation – Aria Suite (Automation & Operations) – Monitori...

    $37 / hr Average bid
    $37 / hr Oferta promedio
    6 ofertas

    SMS SPECIALIST MUST HAVE OWN SMS PLATFORM 2 PART PROJECT YOU CAN DO ONE OR BOTH 1. Set up and execute a trickle text broadcast to the U.S. 50 texts an hour for 12 hours a day until list of 2000 to 3000 is completed..... probably you will use a local text broadcaster in your country 2. Locate or Create a desktop application or software that will send a trickle text campaign via Android or Voip SEVERAL SUGGESTED APPS ARE MYSMS MIGHTYTEXT GOOGLE MESSAGES That will send 50 texts an hour until list of 2000 to 3000 is completed We will pay a premium for one or both of above Do not solicit HI-LEVEL or A2P services

    $104 / hr Average bid
    $104 / hr Oferta promedio
    29 ofertas
    Technical Support Phone Portal
    3 días left
    Verificado

    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...

    $1232 Average bid
    $1232 Oferta promedio
    173 ofertas

    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),...

    $29 / hr Average bid
    $29 / hr Oferta promedio
    27 ofertas

    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

    $51 / hr Average bid
    $51 / hr Oferta promedio
    40 ofertas

    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 (...

    $397 Average bid
    $397 Oferta promedio
    18 ofertas

    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

    $469 Average bid
    $469 Oferta promedio
    5 ofertas

    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...

    $234 Average bid
    $234 Oferta promedio
    10 ofertas
    Managed IT Cold-Calling Sales
    1 día left
    Verificado

    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...

    $303 Average bid
    $303 Oferta promedio
    13 ofertas

    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. ...

    $482 Average bid
    $482 Oferta promedio
    10 ofertas

    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.

    $143 Average bid
    Local
    $143 Oferta promedio
    3 ofertas

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