Product engineering
Idea → MVP → production ownership, architecture, delivery and scale across CRM, telecom, SaaS and AI.
Services, how we work
Capability pages: FreeSWITCH development, Asterisk, WebRTC, CCaaS engineering, AI voice, CRM/ERP, SaaS, consulting, rescue.
Use this when you need people who own the stack end-to-end.
Solutions, what the buyer gets
Outcome pages: hosted cloud PBX, multi-tenant PBX, AI call center, private AI, migration, rescue packages.
UnifiedPBX.in is not a staffing bench that “does Asterisk.” It is an architecture-first practice that owns a product from requirements through live traffic, whether the object is a school fee ledger, restaurant menu API, loyalty event, device AMC ticket, expert-consulting wallet, insurance quote, equity screen, or a SIP port. Voice (FreeSWITCH, Asterisk, WebRTC) sits beside Laravel/NestJS apps, private AI, RBAC, SaaS tenancy, migration and production rescue.
Each service page names the failure modes that show up in production, one-way audio, tenant leaks, model-owned hangup, a CRM that cannot price the domain, and the architecture used to prevent them.
Start with feasibility
Send the current architecture, a pcap, or the modules you run. The first reply is whether the problem is signaling, media, tenancy, domain model or a vendor demo.
Discuss Your ProjectWhere this already shows up
Domain lines on the mosaic match public case studies, education, hospitality, membership, device ops, capital markets, insurance, telecom ERP, voice, and messaging. Stack tags on each tile are from the write-up, not marketing filler.
Platform architecture these services plug into
The same five planes show up in almost every serious build. Services map to a plane, they are not a random menu.
Unified communication stack
EdgePSTN · SIP · WebRTC · mobile
Voice planeFreeSWITCH · Asterisk · FusionPBX
IntelligenceSTT · LLM tools · TTS · IVR
Control planeAPIs · RBAC · data · CRM
CloudCI/CD · observe · HA · security
The job after the engine is chosen
Services are not only FreeSWITCH vs Asterisk. These slices decide whether the product stays in production.
CRM & ERP engineering
Domain models, APIs, portals, CRM+voice, AI automation and multi-tenant SaaS, not a generic SKU.
Mobile app development
PWA, Ionic/Capacitor, React Native, plus APIs, CMS, auth, push and cloud infrastructure.
Full-stack product engineering
Architecture → UI → APIs → data → real-time → deploy → observability → scale, one owner after the UI ships.
Security & reliability
Vulnerability management, monitoring, hardening, VoIP security and recovery drills.
Cloud, DevOps & production
Terraform, CI/CD, Linux, security, observability, migration and production troubleshooting, plus SIP/RTP-aware ops.
Migration
Hardware → software/cloud, chan_sip → PJSIP, engine moves, add AI or SaaS.
Production rescue
One-way audio, dead trunks, WebRTC failures and the incident that is already live.
Engineering services
Scan by lane, same briefs as below, grouped the way buyers search.
OWNERSHIP
Product Engineering & Technical PM
From business idea to MVP to production, product thinking, solution architecture and technical delivery under one roof.
Open service brief →
SYSTEM OF RECORD
Custom CRM & ERP Development
Pillar: business operating systems, domain CRM/ERP, workflows, AI, CRM+voice, multi-tenant SaaS and APIs. Architected around how you operate, not a package skin.
Open service brief →
AI & DATA
AI, Data & Automation Engineering
Production AI hub: data → RAG/GraphRAG → agents → workflows → observability, connected to CRM/ERP, not a model-vendor logo wall.
Open service brief →
AGENTIC AI
AI Agent & Automation Engineering
Production AI systems, not chatbots. Agents, RAG, n8n, CRM/voice integration, guardrails and observability behind the keywords.
Open service brief →
DOMAIN PRODUCTS
AI Architect, Private & Domain AI
Indian-law assistant, markets P&L, insights scoring, retrieval and agents inside a controlled environment. Not a public chatbot dump.
Open service brief →
PRODUCT ENGINE
FreeSWITCH Platform Engineering
ESL, WebRTC, CCaaS, multi-tenant media and AI Voice on FreeSWITCH, communication products, not dialplan-only work.
Open service brief →
BUSINESS ENGINE
Asterisk Development
Business communication platforms on Asterisk, modernize existing systems, click-to-call, WebRTC, contact centers and AI voice, not only PBX rescue.
Open service brief →
ADMIN + CORE
FusionPBX Development
Multi-tenant PBX plus CRM/ERP, AI voice and device-triggered workflows, FusionPBX as a real-time communication platform, not only a GUI.
Open service brief →
ARCHITECTURE
VoIP & Communication Platform Architecture
Architectural hub: SIP, CCaaS, UCaaS, multi-tenant VoIP, WebRTC, AI Voice and CRM, links FreeSWITCH, Asterisk and Contact Center.
Open service brief →
PILLAR
AI Automation & Agentic Workflows
AI agents, RAG, CRM orchestration, AI voice and human-in-the-loop automation, architecture before the tool choice.
Open service brief →
AUTOMATION
AI & Business Workflow Automation
Production workflows across CRM, voice, WhatsApp and AI agents, n8n and GoHighLevel as runners, not a second source of truth.
Open service brief →
CHANNELS
AI Chatbot & LLM Integration
Agents on web, WhatsApp and telephony with retrieval, tools and a human handoff when confidence drops.
Open service brief →
INTELLIGENCE
AI Voice Agent Development
Conversational AI + telephony + orchestration + business automation + production infrastructure. Inbound/outbound agents, AI IVR, CCaaS handoff, RAG, agent CMS, failover. ArthurVox proves the media path, the model never owns hangup.
Open service brief →
EDGE
WebRTC Development
Browser softphones, SIP.js, ICE/TURN and click-to-call that survive corporate NAT, the web half of the client story.
Open service brief →
OPERATIONS
Contact Center & Custom CCaaS
Packaged vs custom CCaaS: ACD, dialers, WebRTC agents, AI workers, multi-tenant billing, platform you control, not a seat license.
Open service brief →
PRODUCT STACK
Full-Stack Product Engineering
MVP to production: frontend, APIs, data, real-time, SaaS tenancy, AI-enabled apps, Linux deploy and observability, not a framework shopping list.
Open service brief →
PILLAR
SaaS & AI-Native Platforms
MVP to production SaaS, tenancy, APIs, billing, AI planes and AI-assisted engineering with human architectural ownership.
Open service brief →
PRODUCT
Fax Broadcasting Development
Engineering for retail and bulk fax platforms, Admin/Reseller/Customer roles, campaign wizards, DNC/leads, Stripe wallets and SSO.
Open service brief →
CLOUD
Cloud, DevOps & Production Engineering
AWS/Azure/GCP, Terraform, CI/CD, Linux, security, observability, migration and production troubleshooting, plus SIP/RTP-aware ops when voice is in the stack.
Open service brief →
FEASIBILITY
Architecture & Consulting
Architecture reviews, discovery, technical specs, diagrams, migration plans and a written 90-day path, technical leadership, not a scrum-master hire.
Open service brief →
LEADERSHIP
Fractional CTO & Solution Architect
Senior technology leadership and architecture without a full-time hire, strategy, AI/SaaS/telecom design, reviews and optional hands-on delivery.
Open service brief →
APPLICATION
Mobile App Development
PWA, Ionic/Capacitor and React Native on one API platform, CMS-driven content, auth, push, events, security, observability and cloud. One platform, multiple experiences, not UI-only.
Open service brief →
PILLAR
Cybersecurity & Reliability
Assess → Harden → Monitor → Detect → Remediate → Recover, with deep VoIP/telecom security expertise.
Open service brief →
CUT-OVER
Migration & Modernization
Hardware IPPBX, chan_sip, engine moves and an existing PBX that needs an AI or SaaS plane, with a rollback.
Open service brief →
INCIDENT
Production Rescue
Live SIP/RTP diagnostics, dead trunks, WebRTC failures, tenant leaks and the incident that cannot wait for a rebuild.
Open service brief →When to pick which engine
| Need | Start here | Why |
|---|---|---|
| CPaaS / CCaaS / AI voice / WebRTC product on FreeSWITCH | FreeSWITCH | Real-time engine + application / API layer |
| Modernize Asterisk / click-to-call / CRM voice / contact center | Asterisk | Mature engine + ARI application layer |
| Hosted PBX + industry / IoT / AI workflows | FusionPBX | Admin plane + event communication layer |
| AI voice on real phone calls | AI Voice Agent Development | Telephony + STT/LLM/TTS + tools; PBX owns hangup |
| RAG, GraphRAG, agents, data pipelines, AI observability | AI, Data & Automation | AI family hub on data + production |
| Agentic AI + production automation (not Trigger→Slack) | AI Agent & Automation | Process → agents → HITL → observability |
| Private / domain AI, RAG, agents | AI Architect | Data plane you can name in a review |
| AI / CRM / WhatsApp / voice workflows | AI & Workflow Automation | n8n · GHL · agents · same record as the phone |
| AI agents, RAG, CRM & voice automation | AI Automation | Agentic workflows · process map · n8n / GHL / API |
| Idea → MVP → production ownership | Product engineering | Architecture + delivery across the lifecycle |
| Custom CRM, telecom bills, HR portals | CRM / ERP | Your modules, not a generic SKU |
| Multi-tenant SaaS / AI-native product | SaaS Development | Tenancy, billing, APIs, AI planes, metering |
| Mobile app + API + CMS platform | Mobile App Development | PWA / Ionic / RN on shared APIs and admin |
| Vulnerabilities, monitoring, VoIP/HA | Security & Reliability | Assess → Harden → Monitor → Recover |
| Hardware IPPBX / chan_sip / suite lock-in | Migration | Parallel run, then cut |
| Calls already dying | Rescue | Traces first, smallest fix |
