Call One


Call One, the leader in Simplification as a Service (SAAS), combines its VoIP platform with ShoreTel to provide the leading solution for business and enterprise consumers. Call One is unique in its ability to pair flexible and reliable network services with focused and personal customer support that has earned an industry-leading 97% customer retention rating.

Call One's enhanced VoIP platform provides nationwide telephone number availability, IT Security, Disaster Recovery, Enhanced 911 and a variety of hand-off methods, including legacy service, TDM, SIP, Ethernet and IP. These are a few of the hallmarks that make Call One the premier communications alternative for businesses seeking to maximize their investment with one of the nation’s most reliable service providers. Call One’s robust voice/video collaboration, professional services and wireless transport options make it the number one choice for businesses seeking a full-spectrum communications partner.


Nationwide telephone number availability

Enhanced directory listings

Enhanced 911

Dynamic Redundancy

E-care customer portal


Unique carrier/vendor cost efficiencies

Best in class customer service

Bridge multi-site and technologies

Simplified carrier and access diversity

Customized invoicing

Adtran can be provided and fully monitored and supported for a small monthly fee.

Call One ST Connect ONSITE App Note with Adtran
Call One ST 14.2 App Note with Adtran

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