Skip Navigation
410-995-0101 Call or Text

Business Phone Systems

Get Voice, Video, Messaging, Mobility, Security, Unified Communications, and more in a single-source PBX System solution.

Telecommunications products and services including IP phones, conference room phone, video conferencing services, cordless SIP phones.

With over four decades of communications experience, ACC Telecom will design and install your business communications system solution, provide training and support as well as be there for you when you are ready to upgrade, expand, and/or relocate your business.

Our award-winning small, medium & large business phone systems include features such as online management, call recording, voicemail to email & text, mobile apps, video teleconferencing, chat, contact center software, in-built failover, and so much more. 



(4) Types of Business Communication Systems Available

ACC Telecom offers four types of business phone systems including a variety of ‘cloud-based’ virtual phone systems, VoIP PBX software (cloud or on-premises), VoIP office phone systems, and digital phone systems to fit the needs of any size or type of company.

ACC Telecom is conveniently located in Columbia, MD to serve the Baltimore-Washington Metropolitan area, as well as nationwide with our cloud PBX technology and SIP trunk service.  ACC provides remote and on-site installations and technical support to customers.




Cloud Phone System

Cloud-based Phone Systems (also known as Virtual or Hosted PBX) include a complete business communications solution plus nationwide calling for one low monthly cost.   

Cloud PBX System’s features and services are located in the cloud and are hosted and supported by ACC Telecom– providing you with redundancy, security, advanced applications–and complete peace of mind!

PBX Location:  In the “cloud”
VoIP Phone Service:  Included
Cost:  Monthly or Annually
Recommended Company Size: 
      1-10 users– CoreNexa 
      11-25 users– 3CX Hosted
      26-5000 users– 3CX

Cloud Phone System with online portal, mobile app, and other compatible devices.
ACC Telecom offers three (3) Cloud-based phone system solutions, CoreNexa, 3CX Hosting, & 3CX to fit the needs of any size or type of company.

*Our 3CX phone system can also be placed in your company’s existing virtual server environment, so it can be fully hosted & managed by you! 




VoIP PBX Software

3CX VoIP phone system software is the newest type of communications system to hit the market—and it’s taking the telecom industry by storm! 

Our software-based VoIP business communications system can be placed on a server in your office, in ACC’s cloud, or in a virtual server environment.  

Our 3CX VoIP PBX software eliminates per-user licensing and extension fees, offering unlimited users and advanced applications for no extra cost.

PBX Location:  Cloud, On-premises, or Virtual Server Environment
Recommended Phone Service:  SIP Trunks
Cost:  Annual
Recommended Company Size:  10-5000+ users

3CX PBX system Mobile Apps for iOS, Android, & Windows

3CX Mobile Apps for iOS, Android, & Windows

Learn more about 3CX software and view pricing here.




VoIP On-Premises Server

ESI eSIP Evolution Business Phone System server and mobile solutions for Maryland, Washington DC and Virginia businesses.

Our ESI eSIP Evolution VoIP phone system provides small to medium-sized businesses with an affordable, long-lasting, future-proof investment. ESI’s American-engineered PBX technology delivers patented and powerful features and applications without cumbersome pricing models and endless per-user licensing fees. 

PBX Location:  On-premises
Recommended Phone Service:  SIP Trunks
Cost:  Purchase or Lease
Recommended Company Size:  Up to 500 users

Learn more about ESI’s eSIP Evolution VoIP PBX and view pricing here.




Digital Phone System

Our tried and true digital phone system is perfect for businesses that deploy Cat3 cables or want their phone system investment to last 15+ years. 

Since digital phone systems are not IP based, they do not pull from your existing bandwidth making it the #1 choice for businesses that do not have reliable internet service or adequate cabling in place.

Our ESI digital phone system offers award-winning, patented technology that will provide a long-lasting, durable, and reliable business PBX solution.

PBX Location:  On-premises
Recommended Phone Service:  Landline/POTS or PRI
Cost:  Purchase or Lease
Recommended Company Size:  Up to 500 users

ESI Business Telephone

Learn more about ESI digital phone system here.


Contact Us icon

Contact Us

We are excited to customize a communications solution that gives your business the power to attract and retain customers, increase productivity, save money, enhance your image and improve customer satisfaction.

ACC Telecom specializes in Cloud Voice PBX, digital PBX, VoIP PBX software, and VoIP on-premise office telephone systems. ACC Telecom has specialized in communications equipment and service since 1979.

Service van with ACC Telecom logo

Contact us today for your free PBX system consultation and price comparison with your current vendor!

The service that ACC provides is always top-notch. They are quick to respond and very efficient. We have been a client for 28 years with an ACC-recommended phone system. We installed the 3CX system a year ago, and the easy-to-use interface gives us the control to manage the system ourselves. The web portal and mobile app also enable remote capabilities that we did not have with our previous system."

— Rae G., Office Administrator, Caves Valley Golf Course, Owings Mills, MD 21117

Contact Us

Let us help you build a future of communications for your business.

"*" indicates required fields

Join Our Newsletter?*
This field is for validation purposes and should be left unchanged.