Twilio Integration Services: SMS, Voice, IVR and CRM

Twilio gives you the building blocks for calls and texts. Turning them into a phone system, an IVR, an SMS workflow or a CRM integration your team can rely on is the part that takes experience. Xsquare Technology builds custom Twilio solutions for businesses in the USA, Canada and around the world, and we build and run our own Twilio-based product, OpenVBX.

If you need Twilio wired into your app, an IVR rebuilt, an SMS tool built from scratch, or an existing integration fixed, we can help.

Talk to a Twilio developer →

What we build on Twilio

SMS and messaging

Two-way business texting, scheduled and bulk campaigns, appointment reminders, alerts and notifications, verification codes, and shared inboxes where your team can reply from one number. We’ve built several SMS platforms (see the projects below), and we’ve written about setting up automated SMS reminders with Twilio.

Voice, IVR and call routing

Auto-attendants (“Press 1 for Sales”), call menus, routing by business hours, keypress or team member, voicemail with transcription and email alerts, call recording, click-to-call and browser-based dialers. In OpenVBX we built a drag-and-drop call flow editor so non-developers can change their own IVR.

CRM and business-system integrations

Log every call and text against the right contact, pop caller details on screen, trigger texts from your CRM or booking system, and sync contacts both ways. We can connect Twilio to the tools you already use, or to a custom CRM we build for you. We’ve also written about automating customer engagement with Zapier and Twilio.

Contact-center and sales-team tools

Calling dashboards for sales and support teams with contact management, call tracking and call outcomes, as in our DialEdge AI project.

AI voice agents

OpenVBX includes an AI receptionist that answers calls, handles common questions and books meetings inside the existing call flow. We can build similar AI voice features into your own Twilio setup.

Setup, compliance paperwork and number porting

Texting US customers from local 10-digit numbers requires A2P 10DLC brand and campaign registration. We help you prepare and submit it, set up your messaging service, and move your existing business numbers into Twilio. (Approval decisions belong to Twilio and the carriers. See Twilio’s A2P 10DLC guide.) We can build consent capture and opt-out handling into your flows, but we’re not lawyers: please check TCPA (US) and CASL (Canada) requirements with your own counsel.

Fixing and taking over existing Twilio projects

Many Twilio projects start with a freelancer and stop working when that person moves on. We review the code, call and message flows and the account setup, fix what’s breaking first, and then extend it.

Twilio projects we’ve worked on

Real work you can look at:

• OpenVBX, our own product. A cloud phone, SMS and IVR platform that runs on the customer’s own Twilio account: IVR call flows, call routing and voicemail, two-way SMS, shared numbers, a built-in CRM with booking, and an AI receptionist. We rebuilt it from scratch with Node.js and React Flow. It comes with a 7-day free trial, no card needed, at openvbx.app.
• DialEdge AI. A calling dashboard we worked on, built on the MERN stack, for contact management and call tracking for sales and support teams.
• TextBolt. A messaging platform we worked on, built on the MERN stack, for creating, scheduling and managing SMS campaigns from one dashboard.
• Textjin. An SMS campaign tool we worked on, built on the MERN stack, with a responsive dashboard.
• NovaBlast. A messaging platform we worked on, built on the MERN stack, for sending, scheduling and managing SMS through a React interface.
• Telefeo and PBX Drives. Projects we worked on in business calling and VoIP/PBX.

Our approach

1. Scope the channels. Which calls and messages, which numbers (local 10DLC, toll-free or short code), what volume, and which systems need the data.
2. Account setup. We work in your Twilio account, so the numbers, data and billing stay yours. Twilio bills usage directly to you at Twilio’s rates.
3. Build and connect. Webhooks, call and message flows, and the integration with your app or CRM, tested on staging numbers first.
4. Register and go live. A2P 10DLC or toll-free verification, number porting, and a monitored launch.
5. Support. After launch, we can stay on for updates, fixes and ongoing changes. We’ll agree the support arrangement with you as part of the project.

Tech we use

Node.js, React, React Flow, PHP and Laravel, MongoDB and MySQL.

Time zones and communication

We’re based in India (IST, UTC+5:30, which doesn’t change for daylight saving), and we work with clients in the USA and Canada. We schedule calls that fit your working day. Between calls we send written updates.

Why work with Xsquare on Twilio

• We run a Twilio product in production. OpenVBX is live SaaS on Twilio, so we deal with real call quality, carrier registration and uptime questions, not only demo code.
• Since 2013. Over a decade of building web, mobile and communication software. We also build custom web apps and CRMs, mobile apps and websites.
• Your account, your data. We build inside your Twilio account. Code and IP terms are agreed in the contract before work starts. We sign an NDA with clients as standard.
• ISO 27001:2022 and ISO 9001:2015. Our sister company, Xsquare Techies LLP, is certified to ISO/IEC 27001:2022 and ISO 9001:2015. See certifications →

Xsquare Technology is an independent company. We are not affiliated with or endorsed by Twilio.

Need Twilio work done?

Tell us what you want calls and texts to do, which tools they need to talk to, and whether you already have a Twilio account. We’ll reply with questions and a suggested approach. If OpenVBX already does what you need, we’ll point you there, because a ready-made product is usually cheaper than custom code.

Book a free Twilio consultation → · Try OpenVBX free for 7 days · Email info@xsquaretec.com

Frequently asked questions

How much does a Twilio integration cost?

It depends on the channels (SMS, voice or both), how complex the call flows are, and which systems need to connect. Twilio’s own usage charges for calls, texts and numbers are billed by Twilio directly to your account and are separate from our development fee. We give a written estimate after we understand the scope.

Do I need my own Twilio account?

Yes, we recommend it. Building in your own account means you own the phone numbers, the message history and the billing relationship with Twilio. We help you set it up if you don’t have one.

Can you help with A2P 10DLC registration?

Yes. We help you prepare and submit the brand and campaign registration, set up the messaging service, and attach your numbers. Approval decisions and timing are up to Twilio and the US carriers.

Can Twilio connect to our CRM?

Usually, yes. Most CRMs have an API or webhooks, so calls and texts can be logged against contacts, and CRM events can trigger messages. If your CRM is custom, we can build the integration directly.

Should we use a ready-made phone system or build custom on Twilio?

If you need standard business calling, texting and an IVR, a ready-made product like OpenVBX is faster and cheaper to start. Custom Twilio development makes sense when calls and texts have to be built into your own app, follow unusual rules, or connect to systems an off-the-shelf product doesn’t support.

Can you take over or fix an existing Twilio integration?

Yes. We start by reviewing your code, call and message flows, and Twilio account setup, fix what’s breaking first, and then extend it.

Can you port our existing business numbers to Twilio?

Yes. We help you move your current numbers into Twilio so you keep the numbers your customers already know. Porting timelines depend on your current carrier.