VoIP Jobs

We are a healthcare organization in Saudi Arabia looking for an experienced consultant to review and improve our call center operations. Current issues include: * Missed calls * Abandoned calls * Queue performance problems * Ineffective call routing * Reporting and KPI visibility challenges We are prioritizing candidates with: - Healthcare call center experience in Saudi Arabia and the GCC region - Experience supporting Arabic-speaking environments - Expertise in PBX, queue management, call routing, and CRM integrations We are specifically seeking consultants who have diagnosed and improved real healthcare call center operations. General AI developers are not a focus for this role. Please provide examples of similar projects you have completed.

I'm looking for an experienced VoIP/SIP developer (or small team) to build a cross-platform SIP client supporting both peer-to-peer calls and video conference joining, with no mandatory registration (registration support required but optional at runtime). Core requirements: 1:1 P2P SIP calls without registration, plus ability to join video conferences regardless of the conferencing platform Audio + video with these codecs: Video — H.264, H.265; Audio — Opus, G.711, G.722, G.729 (G.729 if licensing permits) BFCP for screen sharing Participant list retrieval (including a proxy approach to read participants from the backend if needed) Optional SIP registration (built in for future use) Platforms: iOS, Android, Windows, macOS Preferred stacks: PJSIP or baresip — propose...

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 ...

Flutter Calling App (Customer Listener) Tech Stack Flutter Mobile App Node.js Backend ZEGOCLOUD Voice/Video Calling SDK Firebase Cloud Messaging (if implemented) Issue Description The app allows Customers to call Listeners using ZEGOCLOUD. The call works when both users are actively using the app. However, when the Listener app is in the background or the device is locked, incoming calls are not being received consistently. Expected Behaviour Listener receives incoming call when app is open. Listener receives incoming call when app is minimized. Listener receives incoming call when phone screen is locked. Listener can accept/reject directly from incoming call screen. Call notifications should work reliably on Android and iOS. Areas to Investigate Flutter Side Zego Call Invitation Service i...

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...

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...

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...

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...

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...

I need an experienced Cisco UC engineer to move our entire Cisco Unified Communications Manager 11.5 cluster from the current pair of UCS servers to a fresh BE6K-M6-K9 platform. The goal is a like-for-like migration: two nodes in an active / passive arrangement, keeping every dial plan entry, device pool, SRST reference, certificate, and license exactly as they are today. I’m looking for full, end-to-end assistance. That includes planning the cut-over, exporting and restoring the DRS backup (or using Prime Collaboration Deployment if that proves cleaner), rebuilding the cluster on the BE6K hardware, and validating that phones, trunks, voicemail integrations, and presence services all register with zero loss of service. The passive node must mirror the current HA behaviour; no new ba...

This job post if for a US based telecom company that receives formal subpoenas from law-enforcement and other authorised agencies about once a month. I’m looking for a specialist who can handle each request end-to-end: verify its validity, extract the exact call-detail records and subscriber information from our VoIP switching/billing platforms, format them to agency standards, and return everything within the statutory deadlines. Because the data is highly sensitive, you must already be comfortable with CALEA-style lawful-intercept procedures, chain-of-custody documentation, secure file transfer and confidentiality agreements. I’ll provide API or console access to our CDR database and CRM; you deliver a complete response package and an internal memo I can archive for audit. ...

I'm seeking an IT professional to set up and manage a Local Area Network (LAN) in my office. The network will need to connect multiple devices including 3 computers, 2 printers, and 2 VOIP phones. Ethernet cable may be needed but office may already be wired to existing outlets. Key tasks include: - Configure network hardware (routers, switches) - Set up IP addresses and subnetting - Ensure secure and reliable connectivity - Connect and test all devices (computers, printers, VOIP phones) - Provide documentation for network setup Ideal Skills & Experience: - Proven experience in LAN setup and management - Strong understanding of network protocols and hardware - Familiarity with VOIP integration - Excellent troubleshooting skills - Relevant certifications (CCNA, CompTIA Network+) a...

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 ...

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...

I am launching a new business in the United States and need an experienced, U-S-based professional to get our RingCentral account fully up and running. The goal is to hand over a clean, correctly configured system that my team can start using immediately for voice, SMS, and basic call routing. Here is what I expect from the engagement: • Complete initial account creation with the correct company details and U.S. address verification • Configuration of main company number, extensions, voicemail, and call flow so incoming calls reach the right person every time • Basic auto-attendant greeting and after-hours rules • Confirmation that emergency (E911) information is filed properly for all extensions • A short hand-off session (video or in person if you are ne...