Enterprise Systems established itself as an expert systems integrator for Avaya Call Servers, Voice Messaging, Contact Center Servers, Wired and Wireless Ethernet Switching and related applications for many years. Recognizing that Avaya solutions may not be right for every customer, Enterprise Systems has aligned with other industry leaders including HP, Shoretel, Enterasys, Lifesize and Watchguard.
Enterprise Systems’ consultive approach to delivering the best overall solution may for example in one instance be a total Avaya voice and data package, another may be Avaya with Watchguard and HP components, or yet another an Siemens voice solution with Avaya data and Enterasys Security components.
ESC Canada
Enterprise Systems is one of only a handful of Avaya Partners Authorized for distribution in both the United States and Canada. Located in Toronto, Ontario, Enterprise Systems offers full service and support for Avaya end users utilizing systems as diverse as BCM, Meridian 1, CS1000 or IP Office Enterprise Systems Canada provides service and support to all provinces.
PCC
Enterprise Systems personnel have been members of the Avaya Partner 
Community Council since 1996. The PCC is the research and development partnership between Avaya and its most technically advanced Partners.
Sandler Partners
Sandler Partners is one of the largest and most respected master agencies in the country. Sandler Partners serves the telecom, cloud and IT communities through a service-oriented model based on strategic partnership and shared success. More than 2000 of the country’s leading communications 
consultants, IT and cloud experts, MSPs, and interconnects rely on Sandler Partners for carrier and provider agreements, training, market knowledge, and on-demand sales engineering and closing support
Alpheus
Alpheus provides telecommunications and data center services for enterprises and carriers. As the competitive fiber backbone for Metro Texas, Alpheus is in a unique position to supply resilient data center platforms and support services that help businesses focus on their operations-not their IT.
Alpheus serves enterprise customers in the healthcare, energy, banking, IT and legal fields. As an optical network provider for backhaul, transport and outsourced fault management service, 
Alpheus is flexible, content-neutral and responsive to client needs. Alpheus delivers metro transport to the places where carrier clients need to go, including end-user building, cell sites, carrier hotels, microwave relay points, and Wi-Fi hotspots.
