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Business Phone Service Providers & Telecom Companies in Frederick, MD

Serving Frederick, Maryland Business Telecommunications Since 1979

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

Are you looking for a reliable phone service provider that you can trust?  With over three decades of experience in telecommunications in Frederick, Maryland and the surrounding areas, ACC Telecom is your best choice for business telephone systems, including IP PBX, digital phone systems, ACC Cloud PBX, Voice over IP SIP service, and security surveillance systems solutions. Headquartered in Columbia, MD, ACC Telecom is centrally located to serve your Frederick, Maryland business and all of Maryland, Washington DC and Northern Virginia (NoVA).  Our professional sales and support staff will design a voice and data solution to fit your needs and specifications at an affordable price. At ACC we understand the importance of a reliable communications system, which is why all of our solutions are backed by a 90-day satisfaction guarantee. Our specialties include design, installation,

upgrades & on-going support for the following products and services:  ACC Telecom is a certified 3CX, ESI, and Toshiba phone system provider and we provide our very own Hosted PBX solution, ACC Cloud PBX. As a leading PBX solutions provider, ACC Telecom will accomplish whatever the communications goals of your Frederick, MD business.  During your communications consultation, we always ask for your long-term business goals because we want to design a flexible, scalable solution to meet your needs- whether that is expanding nationwide or moving locations. Our PBX systems are migration-ready so you can simply upgrade or expand your office phone system or security camera system as needed. Please contact ACC Telecom today by calling 410-995-0101 or toll-free at 888-226-2216 to schedule your free consultation and site survey.

Our Specialties Include:

Business Phone Systems

  • ACCloud, 3CX, ESI
  • Hosted PBX
  • IP PBX Servers
  • Virtual Servers
  • Digital PBX
  • Cloud Server Configuration

Phone Service


  • IP Security Camera System
  • Security Camera Installation
  • SD WAN security
  • Network firewall security
  • Cybersecurity & website content filtering


  • Telecom Support & Service
  • On-site PBX support & telephone system repair
  • Authorized Toshiba phone system sales and support dealer
  • Authorized ESI phone system sales and support dealer
  • Authorized 3CX phone system sales and support dealer
  • Certified VoIP / SIP Trunk sales and support
  • Free Helpdesk Support for Customers

PBX Applications

  • Business Call Recording
  • Business SMS
  • Call Center software
  • Call Accounting software
  • Conference Call Services
  • ACD (Advanced Call Distribution)
  • Web Conferencing Solutions
  • Video Conferencing / Web Meeting
  • IVR (Interactive Voice Response)
  • Auto Attendant / Virtual Receptionist
  • Voicemail, Voicemail to email, Voicemail Transcription
  • Call Manager
  • Click to Call
  • Unified Communications
  • Enterprise Mobility Applications (EMAs) / Mobile APP Clients
  • Softphones / Soft PBX
  • Internal Chat
  • Line appearance / Presence
  • QoS Monitoring


PA Systems


  • Wireless & Mobility Apps
  • Conference Room Setup
  • Conference Call Services
  • Secure Communications
  • Door Access Control Systems
  • Headsets


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