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AI Call Center Infrastructure · 2025

Full AI Call Center Agency Stack Built for Digital Flo™

Digital Flo™ is a US-based AI automation agency that delivers done-for-you AI call center systems to businesses — replacing $3,000–$7,000/month human appointment setters with AI voice and chat agents that respond in under 60 seconds, 24 hours a day. AKT engineered Digital Flo's complete backend infrastructure: Retell AI voice agents, Closebot chat and SMS agents, per-client GoHighLevel CRM builds, and n8n automation connecting every layer into one unified system — custom-built for each client's specific business.

mydigitalflo.ioUnited States
Digital Flo AI call center agency logo — Retell AI Closebot GoHighLevel automation

Client results powered by AKT's AI call center infrastructure

+467%

Qualified calls booked

3 → 17 per week for one client

-78%

Cost per acquisition

$450 → $97 per booked call

$40K+

Avg monthly revenue gain

Across Digital Flo clients

60s

Lead response time

vs. hours with human setters

$5K+

Monthly setter cost saved

Per client, eliminated

24/7

Coverage

No holidays, no sick days, no payroll

The Challenge

Delivering bespoke AI call centers for every client — at agency speed and scale

Digital Flo's value proposition is powerful but operationally demanding: every client gets a fully custom AI call center — unique voice agent, unique chat and SMS flows, unique CRM pipeline, unique nurturing sequences — tailored to their specific industry, lead sources, and sales process. Delivering this consistently across a growing client base required a backend infrastructure that could be configured quickly, scaled reliably, and managed centrally.

Without a unified automation backbone, each new client meant manual setup across four separate platforms — creating bottlenecks, inconsistencies, and limits on how many clients Digital Flo could serve simultaneously. The company needed a technical partner who could build the infrastructure once and make it deployable at scale.

The AI call center market is also intensely time-sensitive: businesses replace human setters because leads are being lost to slow response. Digital Flo's AI systems needed to demonstrate sub-60-second response times across both voice and text — or clients would see no improvement over what they already had.

Without AKT

Voice agent setup

Manual per client — slow and inconsistent

Chat/SMS agent

No unified solution across platforms

CRM per client

Manual GHL build — hours per sub-account

Cross-tool data flow

Disconnected — manual data entry required

Client onboarding time

Days — bottlenecked on manual config

Lead response time

Delayed — tools not connected in real-time

Scalability

Hard limit on simultaneous client capacity

What AKT Built

Four integrated systems. One AI call center — unique for every client.

AKT built Digital Flo's entire technical backend — every layer from voice to SMS to CRM to automation — using Retell AI, Closebot, GoHighLevel, and n8n as a modular, scalable stack that can be configured per client in a fraction of the time manual setup would take.

01

Inbound & Outbound · 24/7

Retell AI Voice Agents

AKT builds and deploys Retell AI voice agents for each of Digital Flo's clients — trained specifically on that client's business, products, sales objections, and qualification criteria. The voice agent handles inbound calls instantly (under 600ms response), runs outbound prospecting campaigns, qualifies every lead against the client's ideal customer profile, and books appointments directly into their calendar — without a human setter ever picking up the phone.

Custom voice agent trained on client's brand, products, and objections
Inbound call handling — answers every call instantly, 24/7
Outbound prospecting campaigns — calls lists automatically
ICA-fit lead qualification — screens before booking
Auto-booking — pushes qualified leads directly to client calendar
Handoff triggers — escalates hot leads to human reps when needed
Call recordings and transcripts logged to GoHighLevel CRM
Multilingual support via Retell AI's 31+ language models
Retell AIGoHighLevel CRMAI Voice ModelsCalendar Integration
Retell AI Voice Agents — used by AKT for Digital Flo

02

Text-Based · Always On

Closebot Chat & SMS Agents

AKT integrates Closebot — the #1 rated AI appointment setter for GoHighLevel — as the chat and SMS automation layer for every Digital Flo client. Running natively inside each GHL sub-account, Closebot handles all text-based lead conversations: answering questions, qualifying prospects, overcoming objections, and booking appointments — across SMS, web chat, Facebook Messenger, Instagram DMs, and more. Every conversation is logged and synced to the CRM pipeline automatically.

Closebot configured per client — unique AI trained on their business
SMS automation — responds to new leads within 60 seconds
Web chat, Facebook, Instagram DM, and WhatsApp coverage
AI objection handling — trained on client's common pushbacks
Smart qualification — filters unqualified leads before booking
Conversation-to-booking pipeline — moves prospects automatically
All conversations logged to GoHighLevel contact timeline
Seamless handoff to voice agent or human rep when appropriate
ClosebotGoHighLevelSMS AutomationMulti-Channel AI Chat
Closebot Chat & SMS Agents — used by AKT for Digital Flo

03

Custom Sub-Account · Full Stack

GoHighLevel CRM — Per-Client Build

Every Digital Flo client gets a fully configured GoHighLevel sub-account built by AKT from the ground up — not a template, not a cookie-cutter setup. AKT builds each CRM to match the client's specific sales process, lead sources, pipeline stages, and reporting needs. This includes custom pipelines, automated nurturing sequences, appointment calendars synced to voice and chat agents, trigger-based workflows, and performance dashboards that surface the metrics that actually matter to each client's business.

Custom GHL sub-account per client — built from scratch
Pipeline stages designed around client's actual sales process
Automated lead nurturing — email, SMS, and voice sequences
Calendar management — synced to Retell AI and Closebot bookings
Trigger-based workflow automation for every lead event
Performance dashboard — booked calls, show rate, conversion, CAC
Tag-based lead segmentation by source, status, and qualification
Re-engagement sequences for no-shows and cold leads
GoHighLevelCRM PipelinesWorkflow AutomationCalendar Integration

04

The Backbone That Connects Everything

n8n Automation Backend

AKT built n8n automation as the central nervous system connecting every tool in Digital Flo's stack. When a lead comes in via web form, social ad, or inbound call, n8n routes them to the right agent (voice or chat), logs the interaction to GoHighLevel, triggers the appropriate nurturing sequence, updates the pipeline stage, and fires off any downstream actions — all in real time, with no manual touchpoints. n8n is also used to scale Digital Flo's client management: onboarding new clients, spinning up sub-accounts, and deploying agent configurations programmatically.

Real-time routing — every lead goes to the right agent instantly
Cross-platform data sync — Retell AI, Closebot, and GHL stay in sync
Booking confirmation workflows — automatic notifications and reminders
Pipeline stage updates triggered by agent conversation outcomes
Client onboarding automation — new sub-accounts provisioned via workflow
Error handling and escalation paths — nothing falls through
Webhook-based triggers — responds to any event from any platform
Reporting aggregation — pulls data from all tools into one dashboard
n8nWebhooksAPI IntegrationReal-Time RoutingWorkflow Orchestration

The Results

Custom AI call centers deployed at scale — instant response, automated booking, eliminated setter costs

Digital Flo now delivers fully operational, bespoke AI call center systems to each client — with voice agents, chat and SMS agents, CRM pipelines, and automation all connected and live. What previously took days of manual configuration can now be deployed faster, more consistently, and with a unified backend that Digital Flo controls centrally through n8n.

Every new lead that enters a Digital Flo client's pipeline gets an AI response within 60 seconds — whether via phone, SMS, web chat, or DM. The AI qualifies the lead, handles objections, and books the appointment directly into the calendar without a human setter involved. Booking rates, show rates, and conversion data feed back into GoHighLevel automatically.

The measurable client outcomes speak directly to the infrastructure AKT built: a 467% increase in qualified calls booked, cost per acquisition down 78%, average monthly revenue gains of $40,000+, and the complete elimination of $3,000–$7,000/month in human setter payroll — replaced by an AI system that works every hour of every day.

With AKT Infrastructure

Voice agent setup

Retell AI — custom per client, deployed fast

Chat/SMS agent

Closebot — GHL-native, 60-second response

CRM per client

Full GHL sub-account built and configured

Cross-tool data flow

n8n — everything synced in real time

Client onboarding time

Automated — provisioned via n8n workflow

Lead response time

Under 60 seconds — 24/7, no exceptions

Scalability

Unlimited — modular stack deploys per client

Tech Stack

The full stack powering Digital Flo's AI call center agency

Retell AI

Voice agent platform — sub-600ms latency, 31+ languages, telephony integration

Closebot

#1 AI appointment setter for GHL — SMS, chat, DM automation

GoHighLevel

Per-client CRM sub-accounts — pipelines, nurturing, calendar, dashboards

n8n

Automation backbone — connects all platforms, routes leads, provisions clients

FAQ

Questions about AI call center agency infrastructure

What is Retell AI and how is it used in AI call center agencies?

Retell AI is a production-ready voice AI platform with under 600ms response latency, 31+ language support, and native telephony integration. AKT used Retell AI to build Digital Flo's voice agent layer — handling inbound calls, running outbound campaigns, qualifying leads, and booking appointments automatically for each client without human involvement.

What is Closebot and how does it work with GoHighLevel?

Closebot is the #1 rated AI appointment setter built natively for GoHighLevel agencies. It handles chat and SMS conversations — qualifying leads, handling objections, and booking appointments — directly inside GHL sub-accounts. AKT integrated Closebot as Digital Flo's text-based agent layer, synchronized with GoHighLevel pipelines via n8n.

How does AKT build a custom AI call center for each Digital Flo client?

AKT configures each system from scratch based on the client's industry, lead sources, and business needs: a Retell AI voice agent trained on their products and objections, a Closebot SMS/chat agent in their GHL sub-account, a fully built CRM pipeline, and n8n workflows connecting every touchpoint. No two client builds are identical.

How much faster is AI lead response versus human appointment setters?

AKT's systems built for Digital Flo respond to new leads within 60 seconds, 24/7. Research shows leads contacted within 5 minutes convert 100x more than those reached after 30 minutes. Human setters working business hours can't compete with an AI that responds instantly at any hour — and does it without payroll.

Can n8n connect GoHighLevel, Retell AI, and Closebot in one workflow?

Yes. AKT built n8n as Digital Flo's entire automation backbone — routing leads from any source to the correct agent, syncing conversation data across all platforms, triggering pipeline updates, firing nurturing sequences, and provisioning new client sub-accounts automatically. The entire stack runs as one connected system.

What client results has Digital Flo achieved with AKT's AI call center system?

Digital Flo clients powered by AKT's infrastructure have reported: 467% more qualified calls booked (3 → 17/week), cost per acquisition dropping from $450 to $97 (-78%), average monthly revenue gains of $40,000+, and elimination of $3,000–$7,000/month in human setter payroll — with 24/7 coverage that no human team can match.

Build Your AI Call Center

Ready to replace your human setters with AI that works 24/7?

AKT builds complete AI call center systems — Retell AI voice agents, Closebot chat and SMS, GoHighLevel CRM, and n8n automation — custom-configured for your business and deployed fast.