I will build a custom contactcenter pbx platform voiceagent using asterisk freeswitch

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Pankaj Joshi
build a custom contactcenter pbx platform voiceagent using asterisk freeswitch
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build a custom contactcenter pbx platform voiceagent using asterisk freeswitch

About this gig

Need a business phone system, contact center, or multi-tenant PBX without paying enterprise license fees forever? I build production-grade VoIP and CCaaS platforms you own outright.

With 20+ years of telecom engineering experience and 90+ contracts delivered, I've built multi-tenant PBX platforms, call center dashboards, predictive dialers, and SIP integrations that handle real call volumes not test environments.

What you get:

Custom IP PBX (Asterisk or FreeSWITCH based)

Multi-tenant architecture for resellers or enterprises

SIP trunk & DID number integration

IVR, ring groups, call queues, call forwarding

Call recording, CDR analytics, live dashboards

Agent/supervisor CCaaS panel (Next.js)

WebRTC softphone or mobile app integration

Deployed & hardened on your Linux server

I debug at the SIP/RTP/TCP packet level when needed. This is not a resold hosted PBX it's yours, fully.

  • Programming language

    • JavaScript

  • Expertise

    • Algorithms & Data structures
    • Security
    • Operating systems
    • Databases
    • Source control

  • Frontend framework

    • AngularJS
    • Bootstrap
    • Flutter
    • Next.js
    • React.js

  • Backend framework

    • CodeIgniter
    • FastAPI
    • Flask
    • NestJS
    • Next.js

  • AI & low/no code builders

    • Lovable
    • Bolt.new
    • Firebase Studio
    • Co.dev
    • Cursor
    • Softgen
    • Replit
    • Bubble
    • FlutterFlow
    • Adalo
    • OutSystems
    • Mendix
    • Webflow
    • Retool
    • Glide
    • Thunkable
    • AppGyver
    • Zoho Creator
    • Clutch.io
    • Wappler
    • Stacker
    • Softr
    • Ninox
    • Betty Blocks
    • V.One
    • UI Bakery
    • Backendless

Get to know Pankaj Joshi

Pankaj Joshi

AI Voice Agent and FreeSWITCH Asterisk Expert

  • FromIndia
  • Member sinceApr 2015
  • Avg. response time1 hour

  • Languages

    Hindi, English
I build production-ready AI voice agents and VoIP systems using FreeSWITCH, Asterisk, Twilio, VAPI, OpenAI, and Claude. ✔ AI phone agents & voice bots ✔ Outbound/inbound calling systems ✔ Multi-tenant PBX & CCaaS platforms ✔ SIP/WebRTC/dialers/call routing ✔ CRM + automation integrations ✔ Real-time transcription & AI workflows 20+ years in telecom/software engineering with 90+ successful projects delivered across startups and enterprises.

My Portfolio

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