
Get Voice, Video, Messaging, Mobility, Security, Unified Communications, and more in a single-source PBX System solution.
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.
1 | 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
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!

2 | VoIP PBX Software

3CX Mobile Apps for iOS, Android, & Windows
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
Learn more about 3CX software and view pricing here.
3 | VoIP On-Premises Server
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.

4 | 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
Learn more about ESI digital phone system here.
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.