In 1973, Telephone Utilities was acquired by the Pacific Power and Light Company (PP&L) of Portland, Oregon.
It continued to grow and acquire small telephone companies and, in the process, upgrading switching facilities.
Throughout the 1980s, the company diversified into other fields, including cellular telephony, and then laid a trans-Pacific cable to Japan.
Beginning in 1993, US West Communications, a Bell Operating Company, began selling some of its telephone lines to Pacific Telecom.
In 1993, Pacific Telecom announced it would acquire 45 exchanges serving 50,000 telephone lines in Colorado from US West.