Building a future of communications for your business since 1979

Cloud PBX Phone System provider in Columbia, Maryland, Washington DC, Virginia and the surrounding areasACCloud Phone System


Our Cloud Phone System is an affordable, all-inclusive telecommunications solution delivering advanced features and VoIP phone service over your broadband connection. Specifically designed for businesses needing

robust unified communication features without having to own or maintain an office phone system, organizations are attracted to the flexibility of paying a recurring monthly service fee based on size and usage.



ACC Telecom will design your Cloud Telephone System your way.  Our Cloud Phone System solution is completely customizable, including your music/message-on-hold, features and applications, Auto-Attendant routing, and the buttons on your business telephone.

Our virtual phone system is a perfect fit for small to mid-market companies because you choose the features and applications that work for your budget, with the ability to increase or decrease features immediately based on the needs of your small to medium business.



ACC Cloud Phone System provides you with the tools and features you need to enhance your business for improved growth and success. Utilize countless options to take your business to the next level with a wide variety of inherent features such as Find-me Follow-Me, Conference Bridges, Mobility, Business Continuity, and more.  View our full feature set here.

Provide your valuable customers with quality assurance by utilizing our full-blown Call Center, Call Recording, and Automatic Distribution (ACD) software. Managers will appreciate the detailed statistical reports on activity and performance for each agent or per queue, such as answered vs. abandoned calls and incoming calls per DID.


ACC Cloud phone system mobile applications


  • Advanced Call Routing & Management
  • Auto Attendant
  • Call Center & Call Recording
  • Conference Bridges
  • CRM Integration
  • Disaster Recovery
  • Mobile Application & Softphones
  • Music or Messaging on Hold
  • Online Admin Portal
  • Unified Communications including Voicemail to Email & Text Message
  • Virtual Faxing (Fax via Email)






ACC’s Cloud telephone system allows you to be in the driver’s seat when it involves your business phone choices.  Say goodbye to traditional systems with proprietary phones and hello to IP phone system freedom!

Now you have the ability to choose your IP phones- providing you with more control while cutting costs.  ACC’s virtual phone system supports the following phone manufacturers:

Yealink and Grandstream SIP phones supported for hosted cloud phone systems


  • Aastra
  • Cisco
  • Cisco ATA’s
  • Digium
  • Grandstream
  • Panasonic
  • Polycom
  • Polycom Paging v4
  • snom
  • softphones
  • VTech
  • Yealink









 Q & A

Q: What separates ACC cloud communications from the competition?

Not all cloud telephone systems are created equally.  With failover technology and multiple data centers, our network uptime and call quality are second to none.  In 2016, we boasted 100% network availability, 99.99% calling services and a MOS Score of 4.0 or greater 99% of the time.

Additional competitive advantages include: 

  • Over 37 years of experience w/ an A+ BBB rating
  • Personalized assistance and free helpdesk support without lengthy Auto Attendant prompts 
  • Customized, professional installations
  • On-site & Remote Technical Support 
  • Competitive pricing and customized features
Q: Is there a difference between a Cloud phone system and Hosted phone system?

No, Cloud phone systems and Hosted phone systems are exactly the same.  Originally, cloud-based phone systems were coined 'Hosted PBX' since your provider "hosted" your phone system on your behalf in data centers.  Today, the terminology has shifted to Cloud phone system or Virtual phone system since all of your PBX features, applications, and calling services are located "in the cloud."

Q: I've read mixed reviews about cloud phone systems and VoIP phone service. How can you guarantee that I won't experience dropped calls, static and outages?

One survey targeting decision-makers involved in the selection of VoIP providers showed that problems are very rare- with only one respondent out of 208 reporting dissatisfaction with call quality. (source

Since VoIP calls are run over the public Internet, cloud phone systems and VoIP phone service are heavily reliant on network stability and quality bandwidth.   Performing a network assessment prior to installing a cloud phone system or SIP Trunking solution is the best way to avoid potential call quality issues.  

Steps you can take to beef up your network to prepare for VoIP services:

  • Run Cat5e or higher cables
  • Choose a fiber-based Internet Provider if available and/or increase your bandwidth speeds (if applicable) 
  • Separate voice and data 
  • Install an MPLS solution 
  • Install a Firewall
  • Verify all computers are free of viruses and malware
  • Add a Quality of Service (QoS) router that prioritizes voice


Q: What happens if I lose my Internet connection?

All cloud-based applications rely on Internet connectivity; however, cloud PBX solutions provide inherent disaster recovery so when you lose your broadband connection your communications infrastructure remains available. In other words, your Internet connection is no longer a single point of failure. When your business phone system resides in the cloud, you're provided with a plethora of call routing options. For example, our virtual PBX includes features like find-me-follow-me, voicemail to email, and all calls have the ability to be automatically forwarded and routed to virtually any person, device or location. Plus, we can architect a redundant broadband solution with multiple seamless Internet connections, cutting your costs.

Q: Do I need a new or alternate Internet connection?

You do not need a second Internet connection for business resiliency; however, a second Internet connection or MPLS is recommended, as it provides a great way to further solidify your network solution.

Q: Is your VoIP platform secure against Call Hacking?

Yes, our VoIP phone system technology has additional protocols in place to protect your VoIP account from PBX Fraud. For no additional cost, we provide real-time Call Hacking monitoring tools to disable criminal activity immediately.  Our VoIP technology includes additional safeguards such as password protected international calling and the ability to disable international calling completely. Our VoIP customers also have the authority to restrict international calling on certain hours or days directly from their online VoIP portal.

Q: Which Carrier does the platform utilize?

The benefit of our VoIP Telephone System platform is that you'll never have to deal with a traditional, long distance Carrier again. We manage all Carrier connectivity in the cloud, with 'cross-connects' directly to the PSTN. Our platform includes connectivity to multiple carriers for redundancy purposes, so no single Carrier issue will impact your business. Our Carriers are chosen and maintain favor with us based on their reliability and costs.

Q: Do you recommend performing a Network Assessment prior to installation?

We absolutely recommend performing a network assessment prior to VoIP installation. ACC Telecom’s Advanced Network Assessment Tool focuses on TCP and UDP network topology to provide accurate and objective testing of voice quality on modern telephony networks such as IP. And since no two companies are the same, ACC Telecom’s VoIP Network Assessment is custom-tailored to fit your anticipated applications and usage.

Our dedicated RiPi3 hardware and software collect data securely to analyze simulated voice traffic over your data network to measure key attributes that affect VoIP call quality including TCP bi-directional, UDP calling tests, UDP capacity, concurrent, simulated phone calls, network stability, delay, jitter, packet loss, Carrier HOPS, PING, End Mapping and Traceroutes.

Following the assessment, you will be presented with a report detailing the collected data with any suggestions to improve your network performance. A post-test assessment will also be performed following your VoIP installation.

Q: Is your Cloud PBX System as feature rich as traditional PBX systems?

Yes, our Cloud Phone System includes features most organizations could not afford with their existing phone system. You now have the ability to manage these great features via our easy to use web interface, with no expertise needed. You'll be able to access carrier-class scalability, and API-extensible apps such as or Outlook, providing you with a simple solution for all of your communication needs.

Q: How does VoIP phone system costs differ from traditional phone systems?

Data shows that businesses can save between 30-75% when moving to VoIP services. (Source) Our hosted (cloud) phone system does not require large upfront investments like traditional phone systems. Switching to VoIP technology will reduce your operating costs upfront and over time by eliminating costs such as per user licensing fees, ongoing maintenance, software packages and simple admin changes.  This means your expenses are actually reduced.  Our platform is continually updated to provide your business with new, enhanced capabilities and features- ensuring your business is always on the cutting edge of Virtual PBX technology.




  • choose your plan

  • Call Path
  • Includes main phone number per accountMain Phone Number
  • Business Extension Plan
  • Auto Attendant
  • Voicemail
  • Text Transcription Coming SoonVoicemail to Email & Text
  • Music/Message on Hold
  • Route calls to ring simultaneously or sequentially to various numbers such as your desk phone, cell phone, softphone, or home phone so you'll never miss an important phone call.Find-Me Follow-Me Call Routing
  • Ring Groups
  • User Admin Portal
  • View graphs and export data on call activity, concurrent call paths, extensions, etc.Call Accounting
  • In the event of a 'disaster', such as a power outage, incoming calls automatically reroute so you will never miss an important phone call.Disaster Recovery
  • Advanced Hacking Prevention
  • Multi-location Networking
  • Includes Yealink 3 line IP PhoneIP Phone
  • Mobile APP
  • Account virtual faxing includes email faxing, fax number, unlimited users, fax portal, & 200 minutesVirtual Faxing
  • ACD= Automatic Call DistributionCall Center & ACD
  • Basic

  • Pricing based on a 10-user account and may increase due to the number of users, add-on features & applications, and IP phone upgrade.


    per user/month

  • Unlimited Nationwide Calling including Canada & Puerto RicoUnlimited
  • Standard

  • Pricing based on a 10-user account and may increase due to the number of users, add-on features & applications, and IP phone upgrade.


    per user/month

  • Unlimited Nationwide Calling including Canada & Puerto RicoUnlimited
  • Professional

  • Pricing based on a 10-user account and may increase due to the number of users, add-on features & applications, and IP phone upgrade.


    per user/month

  • Starting at 5,000 minutes per accountMetered



Advanced Network Assessment

ACC Telecom’s Advanced Network Assessment Tool focuses on TCP and UDP network topology to provide accurate and objective testing of voice quality on modern telephony networks such as IP.  And since no two companies are the same, ACC Telecom’s VoIP Network Assessment is custom-tailored to fit your anticipated applications and usage.

API / CRM Integration

API Tokens are web-based applications that integrate with our Cloud Phone System software to provide features such as Click-to-Dial, Screen-Pops and Call logging. Examples of API tokens include and Outlook.

Busy Signal Eliminator

With our On-Demand Burstable Call Path feature, your customers will never hear a busy signal when trying to reach you.  Our system automatically increases your company's call paths if all of your call paths are in use, thus allowing callers to access your Auto Attendant or Voicemail System--while eliminating the dreaded busy signal.


Cat5e or Cat6 cables are recommended for VoIP services. Contact us to schedule your complimentary infrastructure cabling site survey today.

Call Recording

Our Call Recording solution includes a Dedicated Server.  Each server can handle an estimated 1,500 extensions (extensions not included) and 20 concurrent calls (SIP trunks not included), but actual capacity may vary by application. Additional servers may be grouped to provide on-demand redundancy. Call recording plan includes up to 20 concurrent recorded calls. No domestic or international usage is included in this package. Requires setup fee and ACC Telecom voice services.

COMING SOON:  Virtual Dedicated Servers

Each Virtual Dedicated Server will hold up to 1,500 seats and 200 concurrent calls.  Anticipated for release by Dec 2017.

Communications Client

Our Communications Client allows users to manage incoming and outgoing calls from their computer- using their mouse, without ever picking up their handset. Features include an on-screen dial pad, internal video calling, chat, one-click voicemail, call history & contacts, and call management capabilities including hold, transfer, mute, and DTMF keypad.

Conference Bridge

A Conference Bridge (also called a conference room) connects multiple parties participating in a conference call.  Our Conference Bridge feature includes password protected bridges with Moderator controls. 


Conference Room Phones

Enhance your conference calling experience with our IP Conference Room Phones and external microphone ports.  For a complete conference experience, visit our Conference Room Solutions page.

Cordless Phones

SIP Cordless Phones are available for use on our Cloud platform.  Pricing depends on make/model and is subject to change.  Please contact us for cordless phone pricing, specs, and compatibility.  

DID Numbers

Direct Inward Dial (DID) numbers provide users with personal business phone numbers for direct calling, bypassing the operator or Auto Attendant.

Inbound CNAM

Inbound CNAM (popularly known as Inbound Caller ID) provides the caller's name on inbound calls.  Outbound CNAM is included in our cloud packages for no additional cost.

PoE Switch

A Power over Ethernet (PoE) Switch allows a single cable to provide both data connectivity and electrical power to VoIP phones and is highly recommended for VoIP systems.

QoS Router

A Quality of Service (QoS) Router is highly recommended for Cloud Phone Systems to prioritize voice over the network.

SIP Doorbox w/ Door Control

Security starts at your door with our Cloud Phone System's integrated SIP Doorbox with Door Control unit.  Our IP door box controller connects directly through your Cloud Phone System as a business extension, thus enabling two-way communications with the ability to provide door control access directly through your IP phones.  To complete your IP security solution, we recommend integrating our IP Security Camera System

SIP Trunking

Business-class VoIP service (SIP Trunks) are available for any on-premise IP phone system.  Our SIP Trunking service includes an admin portal, advanced call routing features, Call Accounting and disaster recovery.  

Smartphone APP

Our mobile application allows users to manage business calls on the go with features such as extension dialing to co-workers, Virtual Attendant, one-click button to join conference calling with calendar integration, mobile number privacy, "Do Not Disturb", Visual Voicemail with Voicemail to Text transcription (CS), access to company international dialing plan, and more. 

Video Calling

Extension to extension video calling is available with our Yealink and Grandstream IP video phones.

Virtual Faxing / Fax Machine Adapter

Our Virtual Faxing (vFax) packages do not restrict the number of users that can send and receive faxes via email.  Companies will also enjoy a secure, fax portal to manage users, view a complete fax history and send faxes. 

DON'T WANT TO GIVE UP YOUR FAX MACHINE?  No problem!  With our fax machine adapter, you'll have the ability to fax via email and machine!


phone and cloud icons inside a circle, indicating cloud / hosted phone system technology

Contact Us for Your Free Consultation

Please contact us to learn more about our Cloud phone system for businesses or how you can try our VoIP service for free.  

ACC Telecom is centrally located in Columbia, MD to conveniently support business phone systems throughout Maryland, Washington DC, and Northern VA.

ACC Telecom's quick reference guide for Cloud Phone System features for businesses in Columbia, MD, Washington DC and Virginia.

ACC Cloud PBX Quick Reference Guide

Cloud phone system solutions brochure for Maryland, Washington DC, Virginia businesses and beyond

Learn more about ACC Telecom’s Cloud PBX and VoIP solutions.

ACC Telecom
8335 Guilford Road, Suite H Columbia, MD 21046
Phone: 410-995-0101