You will get FreeSWITCH based call center for inbound, outbound, predictive dialer.
Project details
At Callex, we specialize in delivering robust, FreeSWITCH-based call center solutions tailored to meet your business needs. Our platform supports omnichannel communication, auto-predictive dialing, blended campaigns, and seamless incoming call management. Whether youre looking to optimize customer interactions or streamline your operations, Callex is here to provide cutting-edge technology and expert support. Let's elevate your call center experience together!
Purpose
BusinessIndustry
Agriculture, Architecture & Interior Design, Ecommerce, Education, Engineering, Environmental, Fashion & Apparel, Financial Services, Food & Beverage, Gaming, Government & Public Sector, Hardware & Electronics, Legal, Lifestyle, Logistics & Supply Chain Management, Manufacturing & Storage, Marketing & Advertising, Medical & Pharmaceutical, Real Estate, Religion & Spirituality, Retail & Wholesale, Software, Sports & Fitness, Telecommunications, Transportation & Automotive, Travel & TourismWhat's included $249
These options are included with the project scope.
$249
- Delivery Time 3 days
- Number of Outbound Calls 10000
- Number of Email Sends 0
- Lead List
Optional add-ons
You can add these on the next page.
Additional Outbound Call
+$49
Summary Report
+$49
AI Audit Report
(+ 7 Days)
+$100
AI Agent setup
(+ 10 Days)
+$250Frequently asked questions
About Harsh
VoIP Engineer | PBX and Call Center Software Developer | AI Voice
Ahmedabad, India - 5:51 am local time
I am a technology professional with over 10 years of experience in developing advanced telecommunication systems, AI voice automation, and large-scale call center software.
With deep expertise in FreeSWITCH, SIP routing, AI voice pipelines, WebRTC, and real-time call flow engineering, I built Callex as a next-generation AI-powered call center platform for BPOs, outbound sales, customer support, and enterprise communication.
🧩 About Callex Solutions
Callex is a multi-tenant, AI-driven call center platform engineered using FreeSWITCH, WebRTC, Node.js, AI LLMs, STT/TTS engines, and scalable cloud architecture.
It is built for BPOs, sales teams, appointment centers, telemarketing, healthcare/dental offices, and large support centers requiring smart inbound/outbound communication.
🤖 AI & Automation Features
🔹 Advanced AI Voice Calling (Campaign-wise AI Calls)
✔️ AI-powered outbound calling for each campaign
✔️ Custom AI voice scripts per campaign (dynamic intent handling)
✔️ Real-time STT/TTS integrated with AI models
✔️ Collect responses, schedule callbacks, qualify leads
✔️ Human-like voice interaction with natural flow
✔️ Low cost per call — optimized for large volume calling
🔹 AI Auto Call Audit
✔️ Every call (inbound & outbound) is automatically audited by AI
✔️ Generates summary, sentiment, compliance, and quality score
✔️ Detects agent performance issues
✔️ Flags critical calls for supervisor review
✔️ Saves 80–90% manual QA time
🔹 AI Agent Assist (Optional)
✔️ Live suggestions for agents during calls
✔️ Knowledge-base powered real-time help
✔️ Auto-fill dispositions & notes
🚀 Core Call Center Features
📞 Inbound Call Center
✔️ Multi-level IVR
✔️ Queue management (skills-based, priority-based)
✔️ Smart routing based on caller type or campaign
✔️ Ring strategies: round-robin, longest idle, sticky agent
📤 Outbound Dialer
✔️ Predictive Dialer
✔️ Auto Dialer
✔️ Progressive, Preview & Power Dialer
✔️ AI-enabled campaigns
✔️ Retry logic & time-window scheduling
🌐 Agent Communication
✔️ WebRTC Softphone (browser-based calling)
✔️ SIP/IP phone support
✔️ Call transfer / 3-way call
✔️ Hold, mute, music on hold
🎧 Supervisor Monitoring & Control
✔️ Live Listen
✔️ Whisper (talk to agent only)
✔️ Barge-in (join live call with agent + customer)
✔️ Real-time monitoring panel
✔️ Agent status & productivity view
📊 Reports & Analytics
✔️ Real-time dashboard (calls, agents, queues)
✔️ Detailed call reports
✔️ Agent performance & QA scores
✔️ Campaign reports
✔️ Voice broadcast reports
✔️ Hourly/daily traffic
✔️ Missed/abandoned calls
✔️ Exportable analytics
📢 Voice Broadcast / Voice Blaster
✔️ Bulk voice campaigns
✔️ Pre-recorded or AI-generated voice
✔️ AMD-supported
✔️ Intelligent retry & scheduling
🗂 CRM & Workflow Automations
✔️ Auto lead creation
✔️ Dispositions & callback follow-up
✔️ Ticketing workflow
✔️ API-based CRM integration
✔️ WhatsApp/SMS automation (optional)
🏢 Multi-Tenant Architecture
✔️ Host multiple companies
✔️ Isolated data, agents, reports
✔️ Per-tenant billing & restrictions
🔐 Reliability & Scalability
✔️ 400–500+ concurrent calls supported
✔️ Distributed microservice architecture
✔️ Dockerized for easy scaling
✔️ TLS/SRTP secure calling
✔️ Load-balanced FreeSWITCH cluster
🛠 Technologies Used
✔️ FreeSWITCH
✔️ OpenSIPS
✔️ WebRTC
✔️ Node.js / React
✔️ PostgreSQL, MongoDB
✔️ Redis
✔️ Docker & Linux
✔️ Microservices
✔️ AI LLMs (OpenAI, custom models)
✔️ STT/TTS pipelines (Google, OpenAI, DeepGram, Bodhi)
📈 My Role
✔️ Complete architecture & system design
✔️ Backend (FreeSWITCH, SIP, AI pipeline, APIs)
✔️ Frontend & WebRTC softphone
✔️ AI campaign engine development
✔️ Auto call audit system
✔️ Predictive dialer logic
✔️ Real-time reporting engine
✔️ CRM + third-party integrations
✔️ Deployment, scaling, optimization
Steps for completing your project
After purchasing the project, send requirements so Harsh can start the project.
Delivery time starts when Harsh receives requirements from you.
Harsh works on your project following the steps below.
Revisions may occur after the delivery date.
Setup SIP Trunk and DID number for start basic call center
If you want to host on-prem or hosted you need to provide a Debian-12 server.If you wa