Skip to main content
Small Business
Enterprise
Developers
Talk to an expert:(800) 574 5290
Support
Plans & PricingCompany
Back to Customer Stories

Glass Doctor


Glass Doctor 2
glassdoctor.com

Products

  • RingEX
  • Team Chat
  • AI Meetings
  • Business Phone
  • Fax
  • SMS
  • RingCX
  • Webinars & Events
  • Features
  • Phones and headsets

Partners

  • Global service providers
  • Channel partners
  • ISV partners
  • Hardware partners
  • Connectivity partners
  • Affiliate partners
  • Strategic alliances

Open Ecosystem

  • Developer platform
  • APIs
  • App gallery
  • LLM Plugins & MCPs

Learning

  • What's new
  • Resource center
  • Blog
  • Customer stories
  • Newsroom
  • Events & Webinars

Company

  • About Us
  • Leadership
  • Investor relations
  • Ventures
  • Trust Center
  • Corporate Responsibility
  • Careers

Help & Support

  • RingCentral app login
  • Admin portal login
  • Customer support
  • Download app
  • View demo
  • Contact sales
Region

Americas

Company size

20–99

Industry

Retail


Products used

RingEX

Key metrics

10%

higher efficiency

50%

increase in support team capacity

RingCentral and RingCentral Video have dramatically improved our efficiency and customer service. They’ve added 10% to our bottom line, easily.

Ed Sieber

Owner and President, Glass Doctor of Charlotte

Legacy communication system led to slower response times and employee stress

In a highly competitive service industry like glass installation and repair, customer service and reputation often make the difference between a business surviving or shutting its doors. Ed Sieber opened the Charlotte franchise of Glass Doctor in 1987 — and more than three decades later, his business is one of the most successful in the company’s nearly-300-franchise portfolio.

“Our ability to consistently deliver outstanding service, and the reputation we’ve earned as a result, has meant everything to our business,” Sieber says.

But maintaining this high level of service — which earned Glass Doctor of Charlotte a “world-class” Net Promoter Score of 81 — wasn’t easy.

One of the challenges was the company’s limited communications functionality.

“In the service industry, you need real-time answers,” Sieber explains. “You can’t just call one manager with a question and wait for an answer.” Yet that was how the company was forced to conduct much of its day-to-day business, because its communication technology was limited to standard business phone lines.

Then a Glass Doctor franchise in Canada told Sieber what RingCentral could do for his business — and everything changed.

The transition to RingCentral and RingCentral Video proves quick, simple, and painless — even for Sieber’s tech-phobic employees

Additional resources

Take a quick tour of RingCentral

Watch demo

Explore all our AI-powered products

Bring your employee and customer experiences together with reliable AI communications.

Business Phone

The world’s most reliable cloud phone system with built-in team messaging – all reimagined with AI at every step.

Desktop and mobile screens displaying RingCentral's phone app interface for managing calls and voicemails.

Contact Center

Create effortless customer experiences across every channel with our AI-first contact center solutions.

How can we help? Contact us

LegalPrivacyCookie NoticeSite MapAccessibilityContact UsCookie PreferencesDo not sell or share my personal data
© 2026 RingCentral, Inc. All rights reserved.

Sieber already knew about RingCentral because Glass Doctor’s international parent company uses RingCentral to conduct webinars, training sessions, and other meetings with its hundreds of franchise owners across the US and Canada.

“But when my Canadian friend showed me what else we could do with RingCentral, it was really a no-brainer,” Sieber explains. “The phone service itself was robust, the online app was great, and the RingCentral Video collaboration workspace let us communicate in real-time, with the right teams, wherever we were.

Plus, we could do all of this within the same, intuitive platform.”

The fact that RingCentral and RingCentral Video were intuitive meant a lot to Sieber. “Many of my employees aren’t so comfortable with new tech,” he says.

“The last thing you want to do as a small business owner is roll out a new system to improve operations, but instead create a lot of anxiety among your team. With RingCentral, though, everyone was up and running so quickly that I couldn’t believe it.”

Thanks to the app, we can easily hold conference calls or even video chats with our staff wherever they are.

Ed Sieber

Owner and President, Glass Doctor of Charlotte

Sieber and his team find many ways to benefit from RingEX, and RingCentral Video

“We’re finding so many ways to improve our operations with these tools that I could go on all day about them,” says Sieber. “But I’ll describe just a few of my favorite RingCentral features.”

“The phone solution is terrific. We can record calls. We can read our voicemail messages. We can transfer our business numbers to our cell phones, or even take calls on our computers. That means my team and I can be productive anywhere.”

“Thanks to the app, we can easily hold conference calls or even video chats with our staff wherever they are. I can also host meetings with other franchisees, even if they don’t have a RingCentral account. I can even fire up a new meeting, hit the ‘Record’ button, and create training videos for my staff.”

“And I can’t say enough about the RingCentral Video collaboration workspace. Now we finally have real-time team messaging.

When I need a question answered right away, I can just RingCentral Video it out to the right team, or teams — and I know someone will be there to answer. That’s so much better than our old method of calling one person and hoping for a callback soon.”

“We even use RingCentral Video with our customers, to make scheduling easier and to keep them updated. Also, if I need to get on my soapbox and make some new policy change, I can just do it once, over RingCentral Video, and I know everyone has gotten it.”

“And finally, we’re even putting together RingCentral Video sales teams with other franchisees’ businesses. This way, our reps and their reps can share best practices, maintain a single place to find the latest pricing, and even letting each other know which businesses are great to work with and which to avoid.”

“RingCentral is really an enterprise-caliber communication solution for companies with a small-business budget.”

Create effortless customer experiences across every channel with our AI-first contact center solutions.

Events

Curate virtual, onsite, or hybrid events where AI enhances every milestone – from planning to execution.

Screenshot of RingCentral video conference interface showing participants in a virtual event with chat feature on the side.

Analytics

Empower sellers at every stage with at-a-glance sales views, AI-powered scoring, and instant call summaries.

Empower sellers at every stage with at-a-glance sales views, AI-powered scoring, and instant call summaries.

More to explore

An outdoor shot of the Waitrose & Partners storefront
Waitrose

RingCentral's cloud-based SaaS solution deployed on multifunctional devices used in-store delivers a great customer experience.

Organic

Organic By Nature saves nearly $40,000 in first year with RingCentral.

Naked Wines

To provide better service, NakedWines.com takes full advantage of the RingCentral platform, including custom click-to-call integration with the API and real-time monitoring of call queues using the new RingCentral Live Reports.

Stumptown

RingEX® and RingCentral Contact Center™ plug into Stumptown Coffee Roasters’ cloud transformation strategy.

Norauto

Norauto increases its call rate and improves the experience of its customers and employees with the combined solutions of RingCentral and RSI.

National Pharmacies

A 65-store communications transformation for National Pharmacies