T (416) 324-2848
F (905) 888-7029
TF 1 (855) 324-2848

Network Telecom Specialists Serving the Markham, Richmond Hill, Concord, Newmarket, Aurora and GTA area. Certified Partners of Avaya/Nortel, Cisco and ALLWORX.


ADDCOMM provides a wide range of services including Telephone System Sales and Services and Telephone, Computer, Network, Coaxial, Data, Audio and Fiber Cabling for commercial and residential properties in the Markham, Richmond Hill, Concord, Newmarket, Aurora and GTA area.

If you don't see what you are looking for here, contact us. We will be happy to answer any of your service questions.


Telephone and Voicemail Systems

Telephones are indispensable in the information and communication age. Even in this era of computer based communication systems, everyone uses a Telephone, most of us on a daily basis. We can't even go to the store or out of the office without a Telephone anymore. Whether in the office, at home or while out on errands, everyone needs to use a phone at some point. ADDCOMM has been installing Telephone Systems for years throughout the Markham, Richmond Hill, Concord and GTA area, and we are experts at troubleshooting and upgrading them as well. Our skilled and certified technicians have the knowledge and experience needed to install even the most complex network Telephone Systems.

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Computer Data Wiring/Network Telephone Cabling

Most people think that computer data wiring and network telephone cabling only applies to large corporations or businesses that need to allow for information and networks to be shared between large numbers of people. While it is true that most of today's businesses need computer data wiring and network telephone cabling for their enterprise to function and be effective, these techniques are becoming more and more popular amongst individuals and family units that wish to connect their home systems for better communication and sharing of data between individuals and/or hardware.

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About Us

At ADDCOMM, we believe in customer service, safety, and fair prices. We are the Newmarket , Aurora, Concord and surrounding area's number 1 choice low voltage experts who go the extra mile to make certain that our technicians are experienced, well trained and skilled. Our technicians know exactly what they are doing, therefore they don't need to waste time figuring things out, so that keeps our labor costs down. We pass those savings on to our customers and have been for many years.


Contact Us

ADDCOMM is the leading Network Telecom contractor you will find the Newmarket and GTA area, specializing in Telephone System Services, CCTV System Services, Data Networking, Paging, Wireless and Cabling. Contact us, and your Network Telecom needs will be taken care of promptly, safely, and cost effectively. We pride ourselves on excellent customer service and constantly update and train our technicians on all the new trends in the ever changing world of technology and communications.