Asterisk PBX is an open source telephony framework used to create communication solutions for businesses, from voice and video calls to automated call routing. An Asterisk PBX Development professional is highly knowledgeable in the Asterisk platform and is able to deploy custom Asterisk Solutions according to a company’s needs. Services offered by an Asterisk Developer include managing, monitoring and maintaining the Asterisk system and any external services, building custom features specific to the business and improving security through authentication and encrypted communications.

Here's some projects that our expert Asterisk PBX Developer made real:

  • Securing IT networks by blocking unwarranted access attempts
  • Connecting a billing platform with a MultiTenant PBX
  • Setting up secure VoIP applications used to make voice calls
  • Researching and troubleshooting of software issues
  • Integrating third-party APIs into the system
  • Developing feature rich customer service solutions
  • Configuring text message autoresponder systems
  • Improving network configurations with Firewall services

Projects like these require experienced developers who understand the Asterisk PBX platform. If you’re looking for someone with that precise set of skills, post a project on Freelancer.com to hire an Asterisk PBX Developer today. Our team of highly qualified professionals will be able to help you design, develop and deploy custom communication solutions for your business.

De 21,331 opiniones, los clientes califican nuestro Asterisk PBX Developers 4.9 de un total de 5 estrellas.
Contratar a Asterisk PBX Developers

Asterisk PBX is an open source telephony framework used to create communication solutions for businesses, from voice and video calls to automated call routing. An Asterisk PBX Development professional is highly knowledgeable in the Asterisk platform and is able to deploy custom Asterisk Solutions according to a company’s needs. Services offered by an Asterisk Developer include managing, monitoring and maintaining the Asterisk system and any external services, building custom features specific to the business and improving security through authentication and encrypted communications.

Here's some projects that our expert Asterisk PBX Developer made real:

  • Securing IT networks by blocking unwarranted access attempts
  • Connecting a billing platform with a MultiTenant PBX
  • Setting up secure VoIP applications used to make voice calls
  • Researching and troubleshooting of software issues
  • Integrating third-party APIs into the system
  • Developing feature rich customer service solutions
  • Configuring text message autoresponder systems
  • Improving network configurations with Firewall services

Projects like these require experienced developers who understand the Asterisk PBX platform. If you’re looking for someone with that precise set of skills, post a project on Freelancer.com to hire an Asterisk PBX Developer today. Our team of highly qualified professionals will be able to help you design, develop and deploy custom communication solutions for your business.

De 21,331 opiniones, los clientes califican nuestro Asterisk PBX Developers 4.9 de un total de 5 estrellas.
Contratar a Asterisk PBX Developers

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    12 trabajos encontrados
    Configurar SIP Trunk no 3CX
    6 días left
    Verificado

    Tenho um PABX VoIP 3CX já instalado na versão 20. O SIP Trunk encontra-se ativo em uma linha dedicada baseada em IP e a conexão é uma ligação dedicada de alta velocidade. Eu conheço o processo em teoria, mas ainda não fiz essa configuração na prática. Preciso que você: • Crie o tronco SIP no 3CX, inserindo as credenciais fornecidas pelo meu provedor. • Ajuste codecs, autenticação e rotas de entrada/saída. • Teste chamadas internas, externas e DIDs para garantir qualidade de áudio e registro estável. • Documente cada etapa (prints ou texto breve) para que eu possa replicar ajustes futuros. O acesso remoto ao servidor 3CX e aos dados do provedor ...

    $22 Average bid
    $22 Oferta promedio
    13 ofertas

    I’m ready to roll out a brand-new GoAutoDial environment and want everything done right from day one. The scope is truly end-to-end: • Clean installation of the latest stable GoAutoDial build on my VPS • SIP trunk integration so inbound and outbound calls flow without a hitch • Predictive dialer configuration tuned for optimum call pacing and drop-rate compliance • IVR menus designed to fit my current call-flow map • Campaigns set up with lists, scripts, dispositions, recordings and time-zone rules • Security hardening—firewall rules, fail2ban, strong passwords, and best-practice service lockdown I’ll provide server access, SIP credentials, and any brand materials needed for prompt recordings. When you’re done I expect a...

    $361 Average bid
    $361 Oferta promedio
    2 ofertas

    We need an expert to link our main HQ (Grandstream PBX + Synology NAS) with two remote branches (VPN). ​Core Tasks: ​Site-to-Site VPN: Implement encrypted VPN tunnels between HQ and branches. Must support VPN Obfuscation/Stealth techniques to bypass VoIP blocking and DPI in a restricted international location. ​PBX Integration: Add remote extensions to our existing production Grandstream PBX and configure seamless call routing. ​NAS Sync: Integrate remote WD My Cloud storage with HQ Synology NAS using GoodSync over internal VPN. ​QoS Optimization: Implement traffic shaping to prioritize VoIP/SIP packets over file synchronization. ​Requirements: ​Expert-level knowledge of MikroTik/Fortinet (VPN/Routing), Grandstream PBX, and Synology NAS. ​Proven track record of bypassing network restrictio...

    $548 Average bid
    $548 Oferta promedio
    26 ofertas

    I need an experienced English-speaking sales caller to handle outbound calls to warm and cold prospects. Your goal on each call is to introduce the offer, qualify interest, and move the contact to the next step in the funnel—whether that is booking a demo, closing a small initial sale, or collecting the necessary data for me to follow up. All conversations must be recorded in full. Clear, well-labeled audio files along with concise call notes should be delivered at the end of each workday so I can review performance and customer feedback. You may use your own VoIP or dialer platform as long as it produces reliable recordings; if needed, I can provide access to my preferred system and CRM. Key deliverables: • Daily batch of call recordings (MP3 or WAV) • Brief log for ev...

    $110 Average bid
    $110 Oferta promedio
    8 ofertas

    We are looking for an experienced freelancer who can support and configure AudioCodes Mediant 2600 SBC for Microsoft Omnichannel environment. Requirements: * Strong knowledge in SBC, SIP, VoIP, Hotline, and telephony process * Hands-on experience with AudioCodes Mediant 2600 configuration and troubleshooting * Good knowledge of Microsoft Omnichannel configuration and integration * Ability to understand customer requirements and implement configurations accordingly * Experience in SIP trunk setup, call routing, inbound/outbound call flow, and troubleshooting * Must be able to support remotely, and onsite support will be an added advantage Preferred Skills: * Genesys / Microsoft Omnichannel integration knowledge * SIP trunk troubleshooting with telecom providers * AudioCodes SBC monitori...

    $1090 Average bid
    $1090 Oferta promedio
    9 ofertas
    AI Sales Voice
    3 días left
    Verificado

    Hi...greetings! I need an AI-driven voice agent that can carry out the full sales conversation just as a live rep would—greeting prospects, qualifying them, handling objections, and guiding them to a close. The experience must feel completely natural to the caller, with dynamic responses that adapt to intent and sentiment in real time. Key function: Cold calling US, Canada and Europe markets. Core requirements • Speech-to-text and text-to-speech pipelines that keep latency low enough for smooth turn-taking • A dialogue-management layer able to follow branching sales scripts yet improvise when callers stray off script • Simple UI where I can update product information, offers, pricing, and rebuttals without touching code • Seamless hand-off to a human re...

    $640 Average bid
    $640 Oferta promedio
    11 ofertas

    I need an Avaya engineer to finish setting up our IP500 V2 system remotely through TeamViewer or AnyDesk. The hardware is already racked and patched; what’s left is the software configuration inside Avaya IP Office Manager. Here’s what I expect when we are done: • External lines – all six existing analogue PSTN trunks must be programmed for both inbound and outbound calling, placed in a hunt group so that if one line is busy the next picks up automatically. • IVR / Auto Attendant – I will supply the written welcome script. You’ll record or convert it to a WAV file, upload it, and build a simple menu (Press 1 Sales, 2 Support, 3 Accounting). • User permissions (ARS) – three clear calling tiers must be enforced: internal-only, local-on...

    $136 Average bid
    $136 Oferta promedio
    53 ofertas
    Asterisk FAS Tester UI
    23 horas left
    Verificado

    I need a developer who is equally comfortable scripting inside Asterisk and crafting a modern, clean web interface to turn my current False Answer Supervision (FAS) test scripts into a full-featured, client-facing tool. Here is what I want to end up with: • An automated tester that places configurable batches of calls through Asterisk, captures the raw CDRs and any SIP response codes, and stores them for analysis. • A web dashboard that presents the data in a crisp, modern layout and highlights two headline metrics I care about most: Call success rate and Error rate. Graphs, tables, and quick filters should make it easy to spot trouble routes at a glance. • From any report view I should be able to generate a public, read-only URL that shows the exact results I’m ...

    $263 Average bid
    $263 Oferta promedio
    35 ofertas

    I already use and I now want a seamless scenario that links Eleven Labs’ voice-AI agent with Twilio’s voice/SMS services ( To be checked) so the two platforms can talk to each other automatically. Your job is to build the complete integration inside , handle the authentication for both APIs, map the data correctly, and make sure the flow is robust with error handlers and logging. What I expect from you • A working scenario that triggers the Eleven Labs request, captures the audio or text response, then passes it to Twilio to initiate the outbound voice call or SMS. • Clear, commented configuration so I can adjust keys, numbers, or model IDs later without breaking the flow. • A brief hand-off document (or short Loom) walking me through each module and any...

    $105 Average bid
    $105 Oferta promedio
    53 ofertas
    Resolve Sendmail Office 365 Relay
    11 horas left
    Verificado

    Our Sendmail server has been relaying mail through Office 365 for years without a hiccup, but as of today every outbound message fails with the log entry “stat=User unknown.” Nothing on the system was recently patched or reconfigured, so I need a Sendmail-and-Exchange-Online specialist to step in, trace the fault, and restore normal delivery. Key areas that will probably require inspection include the local / settings, SMTP relay authentication, our Office 365 connector, TLS handshake parameters, any IP or domain blocks, DNS records and, of course, the mail logs on both sides. I can supply full SSH access to the mail host plus the Microsoft 365 admin portal and message trace results. Deliverables (acceptance criteria): • Identify the root cause and document it briefl...

    $28 Average bid
    $28 Oferta promedio
    22 ofertas

    Multilingual Voice Recording Project – Code-Switching Conversations Project Name: BV Project Type: Remote | Ongoing (Limited Slots per Locale) Project Overview Project BV is a multilingual speech data collection initiative designed to enhance Automatic Speech Recognition (ASR) systems for high-value multilingual call center scenarios, including financial services, healthcare, and telecommunications. The project focuses on collecting natural code-switching conversational audio, where speakers alternate between two languages within a single conversational turn. Scripts will be provided; however, natural delivery, fluency, and context-appropriate language switching are essential. Language Requirements Primary Language (Native level – one required): Finnish (fi-FI) ...

    $115 Average bid
    $115 Oferta promedio
    7 ofertas

    Multilingual Voice Recording Project – Code-Switching Conversations Project Name: BV Project Type: Remote | Ongoing (Limited Slots per Locale) Project Overview Project BV is a multilingual speech data collection initiative designed to enhance Automatic Speech Recognition (ASR) systems for high-value multilingual call center scenarios, including financial services, healthcare, and telecommunications. The project focuses on collecting natural code-switching conversational audio, where speakers alternate between two languages within a single conversational turn. Scripts will be provided; however, natural delivery, fluency, and context-appropriate language switching are essential. Language Requirements Primary Language (Native level – one required): Swedish (sv-SE) ...

    $78 Average bid
    $78 Oferta promedio
    7 ofertas

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