Telephony & Conf 6 min read Jun 2022 Letus Code (E-commerce ERP)

How we implemented conference & telephony in this project

Integrating cloud telephony, real-time call bridging, and CRM customer leads with automated quote recordings.

Shubham Upadhyay

Senior Backend & Systems Engineer

01.

The High-Touch B2B Sales Challenge

While instant automated quotation handles standard CNC parts, high-value aerospace and automotive orders always require direct engineering clarification. Customers wanted instant telephone callback and audio conferencing directly from the quote screen to discuss tolerances and surface finishes.

"Closing high-value custom manufacturing contracts requires connecting clients with engineers in under 60 seconds."

02.

Bridging Voice Streams & Webhook Pipelines

We integrated Twilio voice APIs with custom Laravel event listeners and Redis pub/sub queues. When a client requests a technical call from their active quote, the telephony gateway automatically dials the available sales engineer, bridges the client, records the consultation, and associates the audio transcript with the CRM order ticket.

03.

Telephony & Conference Architecture

Real-time bidirectional event pipeline connecting web telephony triggers, cloud voice gateways, background queue workers, and audio storage.

Web Portal

(One-Click Call Trigger)

←––→

Voice Gateway

(Twilio PBX / WebRTC)

–––→

Laravel Webhook

(Call Router)

Redis Queue

(Async Dispatch)

CRM Lead Link

(Order Association)

–––→

Target Databases & APIs

S3 Audio Vault

(Encrypted Recordings)

SMS Alerts

(Engineer Dispatch)

Factory Queue

(Specs Verified)

04.

Technology Stack

Twilio Voice API WebRTC Gateway Laravel 9.x Redis Queue Workers AWS S3 Storage MySQL 8.0 HTML5 Audio API

05.

Challenges & Impact

Key Challenges

Handling asynchronous webhook callbacks across call dropouts and busy tones.
Ensuring zero call latency during multi-party conference bridging.
Secure token generation avoiding exposed credentials in client JavaScript.

Measurable Results

Average customer connection time dropped from 4 hours to 45 seconds.
Lead-to-paid-order conversion rate rose by 38% on customized orders.
100% call recording audit trail for disputed manufacturing tolerances.

06.

Key Takeaways

Integrating real-time voice directly into a digital quotation workflow closes the gap between pure self-service e-commerce and complex custom engineering. Asynchronous job queues guaranteed that zero telephony failures or network disconnects could ever interrupt the user primary quoting experience.

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