Connecting Through Our
Carrier Partners
Established in 1992, Call One was the first telecommunications provider to be certified by the Illinois Commerce Commission as a Competitive Local Exchange Carrier and continues to be one of the largest resellers of AT&T local network services. This relationship provides our clients competitive prices previously available only to their largest customers through substantial term and volume commitments. By connecting to each of the other major carriers, Call One also provides our clients the flexibility to take advantage of new technologies as they become available.