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!

Conform celor 24,513 recenzii, clienții îi evaluează pe VoIP Developers cu 4.8 din 5 stele.
Angajează 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!

Conform celor 24,513 recenzii, clienții îi evaluează pe VoIP Developers cu 4.8 din 5 stele.
Angajează VoIP Developers

Filtrare

Căutările mele recente
Filtrează în funcție de:
Buget
la
la
la
Tip
Aptitudini
Limbi
    Starea proiectului
    26 proiecte găsite
    Sales Follow-Up Call Specialist
    6 zile left
    Cont confirmat

    I have a queue of existing customers who recently made an enquiry or purchase, and each of them needs a prompt, friendly follow-up call. The goal is to advance the sale while gathering two key pieces of intel: (1) their current interest level and (2) any candid feedback they have about our product or service. You’ll receive a clear script and talking points from me before you begin, yet you are free to adapt your tone so the conversation feels natural rather than read. All contacts already know our brand—no cold pitching here—so your focus is on relationship building, answering simple questions, and confirming next steps. After every conversation, log the outcome in our shared Google Sheet so I can see at a glance where each customer stands and what they told you. De...

    $21 / hr Average bid
    $21 / hr Oferta medie
    46 oferte

    Need an experienced s specialist to configure our SIP and PRI trunks I will provide remote access to the server and trunk credentials once we agree on the approach. Looking forward to working with someone who can get this running quickly and cleanly. Asterisk PBX Linux SIP Software Architecture,Engineering VoIP

    $212 Average bid
    $212 Oferta medie
    7 oferte
    UAE Business VoIP Number Needed
    6 zile left
    Cont confirmat

    I need UAE number for VOIP call inbound and outbound call, do you know which provider is best for this ? or you can provide us this service ?

    $180 Average bid
    $180 Oferta medie
    1 oferte

    I need an experienced telephony engineer to bring up a new IVR on our Asterisk-based server that will answer calls coming in on both a SIP trunk and a PRI. The core requirement is a clean, dependable call-routing tree—callers should reach the right destination every time—with call recording and basic, built-in reporting turned on from day one. Environment • Linux box already running Asterisk (remote SSH available) • One SIP trunk + one PRI (credentials and circuit details ready) Scope of work 1. Configure the IVR in Asterisk, activate call routing options, and confirm that both trunks follow the same logic. 2. Enable call recording for all menu paths, store files locally in an organised directory structure, and verify playback. 3. Turn on the stock call‐...

    $275 Average bid
    $275 Oferta medie
    1 oferte
    Cold Callers for Web Dev Sales
    6 zile left
    Cont confirmat

    I run a growing website-development agency and have compiled a database of cold leads—mainly owners of small businesses spread across several countries. Your mission is to pick up the phone, engage these prospects, and turn curiosity into signed development projects. You will receive: • A regularly updated spreadsheet of verified cold leads (names, phone numbers, business URLs, and brief notes). • A concise call script highlighting our core offers: custom WordPress sites, redesigns, and maintenance packages. • Login to our cloud CRM (HubSpot) to track each interaction. What I need from you: • Confident, fluent phone outreach during the prospects’ local business hours. • Accurate, same-day CRM updates—status, call notes, next steps. &...

    $132 Average bid
    $132 Oferta medie
    18 oferte
    Cold-Call Auto Leads & Appointments
    5 zile left
    Cont confirmat

    We are an Ontario-based automotive dealership and leasing company looking for a skilled Lead Generation & Appointment Setting Specialist. Your role will include both: Generating qualified leads Calling or email and texting incoming leads from existing source. Calling and booking appointments from inbound and outbound leads This is a long-term role for someone who can consistently deliver real buyer leads. Responsibilities Lead Generation Find potential customers actively looking for vehicles or leasing options through: Facebook Marketplace AutoTrader & CarGurus inquiries Local buy/sell groups Instagram or WhatsApp outreach Collect lead details: Name Phone number Vehicle interest Budget Location Lead Qualification & Calling Call leads using our Canadian VoIP ...

    $6 / hr Average bid
    $6 / hr Oferta medie
    16 oferte

    We need a developer to build a real-time voice transformation application that changes our voice during live phone calls (both inbound and outbound) using the ElevenLabs Speech-to-Speech API. What We Need: The app should capture microphone input, stream it to the ElevenLabs voice changer API, and route the transformed audio back through a virtual audio device (like VB-Cable or VoiceMeeter) so it can be used as a microphone input for any calling app — Zoom, Google Voice, Teams, RingCentral, or any softphone. Key Requirements: Real-time voice transformation with minimal latency (target sub-500ms) Works with any phone/calling application via virtual audio device Supports both inbound and outbound calls Simple desktop GUI with voice selection, on/off toggle, and audio level meters Abil...

    $23 / hr Average bid
    $23 / hr Oferta medie
    116 oferte

    I have a growing list of candidates who have already applied through our recruitment portal; now I need a personable caller to take the conversation further. Your task is simple but crucial: telephone each applicant and guide them through my pre-written 10-step questionnaire so we can capture deeper insight into their qualifications and experience. I will supply: • Daily call list with direct phone numbers and time-zone notes • The scripted questionnaire and answer key • A cloud sheet (Google Sheets / Excel 365) where you can log every response immediately after each call • Voip logins for calling with transcripts of the calls... so you wont need to make any data entry. What I need from you: • Professional, friendly phone manner and clear native English &bu...

    $17 / hr Average bid
    $17 / hr Oferta medie
    27 oferte
    AV Sound System Setup
    5 zile left
    Cont confirmat

    I'm looking for an experienced AV installer to set up a sound system in my Pilates/Lagree reformer studio. The system should include microphone integration and six pendant speakers, and be compatible with headsets. It needs to be hardwired with an auto interface. Requirements: - Professional installation of sound systems - Experience with microphone integration - Knowledge of pendant speaker setup - Ability to ensure headset compatibility - Hardwired system installation Ideal skills include AV installation, technical knowledge of sound systems, and previous experience in fitness studio setups. Please provide examples of similar work.

    $2677 Average bid
    Local
    $2677 Oferta medie
    3 oferte
    Node.js AI Voice Translation Center
    5 zile left
    Cont confirmat

    PROJECT DESCRIPTION Context I'm looking for an experienced developer to build an intelligent call center system with automatic real-time voice translation. The project aims to enable agents in India (English speakers) to receive and handle calls from French customers, with instant bidirectional translation. Objective Create a complete solution that enables: Receiving incoming calls on a French number (OVH Telecom) Real-time voice translation French ↔ English/Hindi Automatic transfer to agent Latency < 1 second GDPR compliant (EU region) REQUIRED TECH STACK Backend Node.js (v20+) for HTTP server WebSocket (ws) for real-time audio streaming PM2 for process management APIs & Services OVH Telecom: VoIP telephony (REST API) Deepgram Nova-2: Speech-to-Text (French & E...

    $1735 Average bid
    $1735 Oferta medie
    44 oferte
    ASTPP Rates & Prefix Setup
    5 zile left
    Cont confirmat

    I need an expert to help me configure billing rates and internal prefixes in my ASTPP installation. Tasks: Import and set up billing rate cards. Configure internal prefixes for specific routing rules. Ensure the billing engine is capturing data correctly. This is a straightforward task for someone who knows ASTPP well. Please bid only if you have worked with ASTPP before and can start immediately.

    $26 Average bid
    $26 Oferta medie
    29 oferte

    I have a growing list of candidates who have already applied through our recruitment portal; now I need a personable caller to take the conversation further. Your task is simple but crucial: telephone each applicant and guide them through my pre-written 10-step questionnaire so we can capture deeper insight into their qualifications and experience. I will supply: • Daily call list with direct phone numbers and time-zone notes • The scripted questionnaire and answer key • A cloud sheet (Google Sheets / Excel 365) where you can log every response immediately after each call • Voip logins for calling with transcripts of the calls... so you wont need to make any data entry. What I need from you: • Professional, friendly phone manner and clear native English &bu...

    $2572 Average bid
    $2572 Oferta medie
    38 oferte

    Hiring Full Stack Developer / Agency for AI-Powered White Label Loan SaaS Platform We are building a complete AI-enabled fintech loan platform with white label SaaS model, automation, CRM, and tracking system. Looking for an experienced developer or team to build the full product end-to-end. User Mobile App (Android & iOS) • Secure OTP login & consent flows • Personal Loan enquiry • Free CIBIL check + paid CIBIL repair consultation • EMI Calculator & Debt Consolidation • AI Chat Loan Assistant (Groq API) • Payment gateway integration • Multi-language ready Website (Same as App) • All loan modules • AI chat • Lead sync with CRM • UTM tracking support AI Chat System • Smart user qualification • Auto lead cr...

    $2544 Average bid
    $2544 Oferta medie
    82 oferte

    Cold Caller / Appointment Setter – Roofing Only (Overseas Freelancers) We are a U.S.-based roofing company hiring experienced overseas cold callers to set roof inspection appointments for homeowners with verified storm damage. Roofing only. No solar. No other home services. ⸻ Who This Is For • Freelancers outside the U.S. • Fluent English required • Spanish is a strong plus • Proven cold-calling AND appointment-setting experience is REQUIRED • Home services experience preferred (roofing strongly preferred) ⸻ Job Overview You will be calling homeowners from storm-damage addresses pulled from Doorknocker. Roof damage has already been identified from the street, making these qualified cold calls — not random dialing. Addresses will be provided...

    $270 Average bid
    $270 Oferta medie
    72 oferte

    Need an experienced telephony specialist to configure a IVR that works on both our SIP and PRI trunks with all recording and basic reporting enabled . I will provide remote access to the server and trunk credentials once we agree on the approach. Looking forward to working with someone who can get this running quickly and cleanly.

    $103 Average bid
    $103 Oferta medie
    9 oferte
    FreePBX Calls
    3 zile left
    Cont confirmat

    Our FreePBX (Astersik) System is rejecting inbound calls and unable to make outbound calls. System uses Laravel UI with PBX system. Telnyx says that problem is with our system. So who is expert to fix it in few clicks? Thank you

    $35 Average bid
    $35 Oferta medie
    32 oferte

    I need a freelancer to install and configure Issabel and the Issabel Contact Center module on a ready-to-use CPU server. Requirements: - Install on a CPU server -Install dialer configure it (Predictive, Progressive,manual dialing and voice broadcasting) - Configure Issabel and Contact Center module - Server is ready; no setup needed - Operating system is currently none; should be installed as part of the task Ideal Skills & Experience: - Experience with Issabel and contact center setups - Proficient in server installations, especially on CPU servers - Familiar with Linux operating systems Looking forward to your bids! Freelancer from India, Nepal, Bangladesh , Srilanka will preferred Instead of Bidding, also make sure you "DM"

    $88 Average bid
    $88 Oferta medie
    11 oferte

    Ich möchte unsere bisherige analoge Telefonanlage in unserem KMU vollständig auf eine selbst gehostete VoIP-Lösung umstellen. Als Herzstück soll ein Asterisk-Server laufen, den wir in unserer eigenen Infrastruktur betreiben. Rund 11 – 50 Mitarbeitende werden die neue Anlage täglich nutzen. Folgende Kernfunktionen sind zwingend erforderlich: • Anrufweiterleitung • Voicemail • Konferenzschaltung Alle bestehenden Rufnummern sollen nahtlos portiert und auf der neuen Plattform weitergeführt werden. Neben der eigentlichen Installation erwarte ich eine kurze Dokumentation der Systemarchitektur, eine verständliche Anleitung für zukünftige Erweiterungen sowie einen Testlauf, bei dem alle Funktionen live verifiziert werden. W...

    $1258 Average bid
    $1258 Oferta medie
    10 oferte
    UAE VoIP Number buy
    2 zile left
    Cont confirmat

    I need an experienced telecom professional to secure and activate a legitimate UAE business VoIP number for my company. I’m looking for guidance from selection to live testing, so the scope covers: • Recommending a reputable UAE-compliant provider that can issue a local DID in my company’s name • Handling any paperwork or TRA registration that a foreign-owned or mainland business must complete • Purchasing the number on my behalf, or walking me through the exact purchase steps if the provider requires my direct action • Supplying SIP credentials (or portal access) and confirming that inbound calls ring through to my existing phones/softphones • Sharing a concise setup guide so I can edit call-forwarding rules, voicemail greetings and future rou...

    $195 Average bid
    $195 Oferta medie
    2 oferte

    I’m looking for an experienced Power Pages consultant to work with me on an existing Dataverse setup, not a greenfield build. This is an external-facing Power Pages portal whose sole purpose is secure data submission and management into existing custom Dataverse tables. Existing setup (must be reviewed first) Three custom Dataverse tables already exist Relationships are already defined (parent + related child tables) Your first task will be to: * Review the current table structure * Validate relationships, columns, data types, and ownership * Flag any required changes upfront before portal configuration begins * No assumptions. No silent refactoring. Scope of work You will: * Configure a Power Pages site connected to my existing Dataverse tables * Surface a main parent f...

    $2 - $8 / hr
    Sigilat
    $2 - $8 / hr
    13 oferte

    My growing online store is ready to move from ad-hoc replies to a proper customer care workflow. I am looking for someone who can take full ownership of two key areas: • Phone support – answer incoming calls, resolve or triage issues, and log every interaction inside our ticketing tool (Zendesk Talk, Freshdesk, Aircall or a comparable VoIP platform of your choice). A friendly, native-level English tone and clear documentation are essential. • Instagram live-chat enablement – although our primary need is voice, I also want to start handling customer DMs on Instagram in a structured way. You will help connect Instagram messaging to the same help-desk pipeline, set up quick-reply templates, and then manage the chat during business hours. Deliverables 1. Configure the ...

    $471 Average bid
    $471 Oferta medie
    27 oferte
    Spanish Live Chat & Phone Support
    1 zi left
    Cont confirmat

    I need a native Spanish speaker from Latin America who can cover both live-chat and phone inquiries with equal dedication. The work is fully remote and spans 48 hours each week, with the first week serving as a paid trial so we can be sure everything runs smoothly. Here’s the workflow you’ll follow: • Greet customers in Spanish, clarify their questions, and resolve issues through our chat console and VoIP line. • Adhere to the simple scripts and step-by-step guidelines I’ll provide. • Keep a concise activity log at the end of each shift so we can track resolved cases and any follow-ups. What I’m looking for: • Native-level Spanish from a Latin American country. • Clear, friendly speaking voice and solid written grammar. • Reli...

    $169 Average bid
    $169 Oferta medie
    29 oferte

    I need a working proof-of-concept Voice Agent CRM whose entire logic runs on an n8n instance that I host. The system’s core goal is customer support, so the voice agent must effortlessly answer FAQs, open or update tickets, and, when necessary, transfer a live call to a human agent. Key expectations • n8n will orchestrate every step—speech-to-text, intent detection, CRM updates, and call routing—so the workflows you build have to be easily readable and fully documented inside the editor. • Scheduling flows should connect to Google Calendar; if you can keep the design flexible enough to plug in Outlook or Apple Calendar later, even better. • Tickets can live in a lightweight built-in board, a fresh Postgres table, or a customary help-desk SaaS as lo...

    $198 Average bid
    $198 Oferta medie
    13 oferte
    Advanced Real Estate Voice Agent
    1 zi left
    Cont confirmat

    We are building an end-to-end AI-powered real estate acquisition system designed for wholesaling, creative financing, fix-and-flip, and long-term rental investing. This is not a simple chatbot project. The system will: Aggregate real estate data from multiple sources (property data, pre-foreclosure, auctions, rentals, listings) Underwrite properties automatically using investor-grade financial models Determine the optimal exit strategy (wholesale, cash flip, or long-term hold via creative financing) Populate all data and calculations into a CRM Power a human-sounding conversational voice AI agent that speaks with sellers, presents offers, sends LOIs, and schedules follow-ups Operate within U.S. calling/SMS compliance constraints using human warm-transfer → AI We are looking for a sen...

    $838 Average bid
    $838 Oferta medie
    87 oferte

    I need an end-to-end AI voice solution that can place outbound cold calls, introduce my company, and present clear product details while responding naturally to prospects. Beyond the opening pitch, the bot should handle basic objections, capture interest signals, and transfer or schedule a follow-up with a human rep when requested. I will supply the product brief, persona notes, and a draft script. You will: design the conversational flow, choose or fine-tune speech-to-text and text-to-speech models, connect everything to a telephony provider such as Twilio or an equivalent SIP gateway, and give me simple controls to launch and monitor campaigns. Deliverables • Fully functional voice-bot application with source code and deployment guide • API or webhook endpoints to push ...

    $34 / hr Average bid
    $34 / hr Oferta medie
    63 oferte
    FiveM Roleplay Server Setup -- 2
    5 ore left
    Cont confirmat

    I'm looking for an experienced FiveM developer to set up a roleplay server. Essential features: - Custom jobs - Economy system - Police and emergency services - Drug services - Pay-to-win gun service - Lean (drugs) - Pay-to-win cars and houses Ideal skills and experience: - Proficiency in FiveM and server configurations - Experience with roleplay server setups - Strong scripting skills for custom jobs and economy systems - Knowledge of integrating various in-game services Looking for someone who can deliver a robust and engaging server experience. Please provide your portfolio and relevant experience.

    $676 Average bid
    $676 Oferta medie
    16 oferte

    Articole recomandate doar pentru tine