Business Phone Systems in Maryland
Advanced Communication Systems (ACS) provides business phone systems for small to midsized businesses and government agencies. From independent offices to multisite operations, we deliver tailored end-to-end services designed, installed and supported by one accountable partner. Our consultative approach helps organizations without dedicated IT staff connect teams, reduce costs and scale reliably.

Office Phone Systems Built for Maryland Businesses
Every organization has unique communication needs. We don't offer off-the-shelf solutions. Whether you operate a practice near Fort McHenry or manage multiple locations, our team designs office phone systems fully customizable for MD businesses:
- Avaya IP Office: Hybrid platforms combining traditional telephony with advanced VoIP capabilities, delivering security and reliability.
- Hosted VoIP: Cloud-based calling that supports remote teams, simplifies operations and reduces ongoing hardware maintenance.
- Microsoft Teams Phone: Native voice integration within Teams for seamless collaboration and enhanced availability.
- Cisco solutions: Secure, scalable phone systems engineered for businesses prioritizing data protection and IT efficiency.
- Hybrid deployments: Blended configurations that combine on-site and cloud components for maximum flexibility.
We evaluate your current environment, budget and growth plans to recommend the right system architecture.
Why Local Businesses Choose Advanced Communication Systems
Organizations trust us as their Maryland business phone provider because we show up, follow through and stay accountable. Our track record speaks for itself:
- Over 20 years serving business and government clients throughout the DC Metro region and as a national provider.
- 5,000+ clients relying on our communication systems for their daily operations
- A+ BBB rating reflecting our dedication to service quality and customer satisfaction
- Certified partnerships with Avaya, AT&T, Cisco and Mitel
- Trained engineers who understand complex deployments, integrations and compliance requirements
We operate as your complete communication partner for business systems. From initial system design and installation to ongoing training and technical support, you work with one partner who knows your setup and takes responsibility for results.
Flexible Deployment Options
Organizations have different preferences when it comes to infrastructure. We support three proven deployment models:
- Cloud/hosted systems deliver voice services over the internet, eliminating on-site hardware requirements and enabling access from anywhere. This model saves time and money for distributed teams, prioritizing mobility.
- On-premise platforms keep infrastructure in-house, offering direct control for businesses with regulatory requirements, specific uptime expectations or sensitive data protection needs.
- Hybrid configurations blend on-site and cloud components, giving you flexibility while maintaining survivability where it matters most. This approach allows organizations to transition gradually without forcing an all-or-nothing migration.
We can walk you through the trade-offs, explain what each option requires and help you make an informed choice based on your operational needs.
Featured Client Success Stories
"Having had exposure to ACS at other companies, I was delighted to see that the company commitment, passion and drive for excellence is still thriving." - American Cancer Society
Fantastic installation by ACS! You made it easy for us to ensure that everything runs smoothly with our new Avaya system. Very professional, very helpful and always there when we need you. - Allstate Insurance
It was terrific to work with an organization that was able to adapt to our needs so readily and effectively. Your installers were exceptional and showed a willingness to ensure that all users had a good understanding of the new phone system. - Harris Teeter
We cannot thank you enough for the dedication and professionalism displayed by your entire team. The new phone system installation and training was a big success. All promises met and delivered. Thank you for all of your efforts. - Mitsubishi Industries
The service your company provides is top quality – from initial request for info, to the proposal and execution. You understood our unique requirements and improvised when requested. Raytheon - Raytheon
Request a Quote for Business Telephone Systems
Ready to move past outdated equipment or unreliable support? Advanced Communication Systems designs solutions that fit your organization. If you need a complete system replacement or want to explore your options, we provide straight answers and practical recommendations.
Contact our team today for a free consultation and system design review. We'll assess your current setup, understand your requirements and outline a solution that grows with your business. Explore our hosted VoIP phone solutions, Avaya IP Office systems or Cisco phone system platforms to learn more.