Advent at a Glance
|
Founded |
Formed in 2000; incorporated in 2001 |
|
Legal name |
Advent Communication Systems |
|
Headquarters |
250 Meadowlands Blvd., Washington, PA 15301 |
|
Team members |
Washington, PA · Erie, PA · Tampa, FL |
|
Leadership |
Greg Sinnamond, President & Owner |
|
Team |
Averaging 20+ years of experience in their specialties |
|
Customers |
About 2,000 active customers, from 5 to 5,000+ employees |
|
Onsite service |
Pennsylvania, West Virginia, Northeast Ohio, Western New York and the Tampa Bay area |
|
Remote support |
Customer sites across the continental U.S., Canada and Europe |
|
Services |
Managed IT & cybersecurity · Cloud communications · Building security and infrastructure |
|
Industries |
14, including healthcare, education, government, manufacturing and finance |
|
Partner status |
RingCentral Diamond Partner · Zoom Certified Delivery Partner · Extreme Authorized Partner |
|
Contact |

Our Story
Advent Communication Systems was formed in 2000 and incorporated in 2001 as a communications company, installing and supporting business phone systems. As customers' needs grew, so did Advent: the networks their phones ran on, the computers and servers on those networks, the security protecting all of it, and eventually the cameras and door access in their buildings.
Twenty-five years later, Advent is a technology integrator and managed service provider focused on three areas: managed IT and cybersecurity, cloud communications, and building security. The phone systems are still part of it – now in the cloud as well as on-site.
How We Work
Our mission is simple: Leave Your Technology to Us. Partnering with Advent means having a technology advisor by your side, not just another vendor. We take the time to understand your organization, your goals, and the problems in front of you, then recommend technology that fits your business and your budget.
We're big enough to support very large organizations and small enough to truly care: a knowledgeable team serving about 2,000 customers, led by an owner who's still involved day-to-day.
- Responsive. Calls reach a live person, and new inquiries are answered the same day or within one business day.
- Accountable. One team for your phones, network, security, and IT, so problems don't bounce between vendors.
- In it for the long run. Twenty-five years in business, and planning help that looks past today's ticket to what you'll need next.
To us, service means helping customers manage, maintain, and improve their technology – and keeping it working.

Our Mission Statement is “Leave Your Technology to Us.”
Our Executive Leadership
Our Team
Advent's team works across sales, technical support, voice services, cabling and technology planning, and they average more than 20 years of experience in their specialties. The people you'll work with are the Help Desk staff who answer your calls, the technicians and cabling crews who come on-site, the voice specialists who build your phone system, and the vCIO who plans with you.
Join Our Team
Interested in working with a team that solves problems for customers every day?
Where We Work
Our headquarters is in Washington, PA, about 30 miles south of Pittsburgh, with team members in Erie, PA, and Tampa, FL.
Onsite: Pennsylvania, West Virginia, Northeast Ohio into Cleveland, Western New York into Buffalo, and the Tampa Bay area.
Remote: Monitoring, support, and changes for networks and cloud systems at customer sites across the continental U.S., Canada, and Europe.

PITTSBURGH, PA

ERIE, PA

TAMPA, FL
RingCentral Diamond Partner · Zoom Certified Delivery Partner · Extreme Authorized Partner
Partners and Certifications
Technologies we deploy and support: Microsoft · Avaya · Hanwha Vision · Ubiquiti · Allegion · Valcom · Algo · Fortinet · Huntress · Datto · Proofpoint · ThreatLocker · Cisco Duo · WebTitan · Cavelo
Certified teams have invested in the training their technology requires, and higher-level partnerships give Advent escalation paths, product specialists, and current knowledge as platforms evolve. A Diamond or Certified designation is third-party recognition that Advent has met the manufacturer's requirements.
In simple terms: our customers get the combined strength of Advent's local expertise and the resources, training and support of the manufacturers we represent.