1951
• June 29 - DeKalb Telephone Cooperative received its charter.
• July 10 - First meeting of the Board of Directors was held. There were seven directors.
Mc Allen Foutch served as legal counsel and was instrumental in the establishment of the cooperative.
• December 17 - First loan was approved to construct the Alexandria, Liberty, and Temperance Hall exchanges.

1952
• March 6 - Schedule of rates was adopted:
     One-party Business Service - $6.00
     One-party Residential Service - $4.75
     Eight-party Service - $3.25

1953
• December 19 - Cut-over celebration was held and system was placed in operation for 508 subscribers.

1954
• Gordonsville Home Telephone System, Auburntown Telephone Company, and Smithville Telephone Company were purchased.

1955
• Hickman Telephone Company was purchased and service was expanded to the Gassaway community.

1956
• Service was provided to the Gordonsville, Auburntown, and Smithville exchanges.
• Board of Directors expanded, with one director representing each exchange and one director representing the members-at-large.

1958
• Additional funds were borrowed and the systems at Milton, Readyville, Woodbury, Short Mountain, Statesville and Norene were acquired.

1959
• Began providing service to the Milton, Norene, and Woodbury exchanges.
• Three directors were added to represent the three newest exchanges.

1960
• New Middleton Telephone Company was acquired.

1964
• Brush Creek Telephone Company was acquired.

1968
• Eight-party service was deleted and all subscribers began receiving one-party or two-party service.
• New rates were implemented:
     One-party Business $8.75
     One-party Residential $6.00
     Two-party Business $7.50
     Two-party Residential $5.00

1972
• Board authorized an REA loan request to upgrade to one-party service.

1974
• Two-party service was deleted and new rates were established for all one-party service.
     Business $15.00
     Residential $9.75
• The organization was converted into a cooperative, nonprofit, general welfare,
membership corporation, and therefore the name became DeKalb Telephone Cooperative, Inc.

1976
• Woodland exchange was added to the service area.

1980
• A new building was constructed in Alexandria to house the plant and warehouse operations.
• The Woodbury commercial office was reopened as a customer service center and retail phone store.

1981
• A new building was constructed and opened as a customer service center and retail phone store in Smithville.
• The cooperative's first digital switch was installed in Woodbury.

1985
• Voting machines were authorized to be used in all future elections of cooperative directors.

1987
• New rates were established:
     Business $19.00
     Residential $10.75

1988
• A new warehouse was constructed.

1989
• DTC won the lottery drawing for a cellular license to serve an eight-county rural area in Middle Tennessee, which included the DTC service area.
• Digital switches were installed in Smithville, Alexandria, Liberty, Gordonsville, and Temperance Hall.
• New rates were established:
     Business $21.00
     Residential $12.75

1990
• Digital switches were installed in Auburntown, Milton, Woodland, and Norene.

1991
• A subsidiary, Advantage Cellular Systems, Inc., was established to provide cellular service.

1993
• Woodbury's DMS-10 digital switch was replaced with a DMS 100/200.
• Toll free calling area was expanded through County Seat and then County Wide Calling.
• Equal access through 1+ dialing to any long distance carrier serving the area became available for all subscribers.

1994
• Company Wide Calling became available, allowing toll free calling throughout the cooperative's service area.
• Metro Area Calling became available for subscribers in Rutherford and Wilson counties.
• Approximately 80 miles of fiber optic cable was installed.
• Paging service was expanded to provide regional, statewide and nationwide coverage through paging resale.

1995
• Integrated Services Digital Network (ISDN) service and Internet access became available.
• Bylaws were changed to allow the cooperative to offer new services such as TV and other entertainment, as permitted by state laws.

1996
• The cooperative was now providing more than just basic telephone service. Therefore DeKalb Telephone Cooperative, Inc. began doing business as DTC Communications to better promote the wide array of services offered.

1997
• DTC purchased the BLSS property adjacent to DTC's existing customer service office in Woodbury.

1998
• A new customer service office and retail store was opened in Gordonsville.
• DTC was successful in obtaining Local Multi Point Distribution Service (LMDS) licenses for three areas.
• A new building was constructed and opened for the customer service and retail store in Woodbury on the former BLSS property.

2000
• The new 215 exchange was opened in Smithville due to numbers in the 597 exchange being exhausted.

2001
• Digital Subscriber Line (DSL) service became available.
• DTC began offering long distance service to its members.

2002
• DTC became an Internet Service Provider.

2003
• Implemented Early Voting Procedures to be more convenient for members.

2005
• Changed logo to represent goal.  DTC -- Dedicated To Customers