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With to conversion of the three exchanges to dial or common battery operations, many of the small service station systems connected to the exchanges for switching service did not want to go to the expense of modifying equipment to meet the required standard and were purchased by the Davis Company. The following is a list of these systems and the year they were taken over:

1952 - Mink Lake Telephone Co. Ltd. (20 phones)
1955 - Brougham and Gratton Telephone Co. Ltd. (14 phones)
1956 - Cormac and Eganville Telephone Co. Ltd. (24 phone)
- Lightning Telephone Co. Ltd. (11 phones)
- Pine Valley Telephone Co. Ltd. (38 phones)

1957 - Upper Admaston Rural Telephone Co. Ltd. (17 phones)

1959 - Foster Bros Telephone Co. Ltd. (11 phones)
- Gratton No. 7 Telephone Association Ltd. (21 phones)
- Lower Bonnechere Telephone Co. Ltd. (16 phones)
- Wilberforce Rural Telephone Co. Ltd. (27 phones)

1960 - Bromley Telephone Association Ltd. (44 phones)
- Evergreen Telephone Co. Ltd. (8 phones)

The Davis system also purchased the Golden Lake exchange from the Madawaska Valley Telephone Co. Ltd. in 1956. Madawaska had previously taken over this exchange with its purchase of the North Algona Telephone Co. Ltd., but it was closer to the centre of the Davis operation than to that of Madawaska and it seemed logical that it should be part of the Davis System.