U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
(a) The expenses related to central office equipment are summarized in the following accounts:
Table 1 to Paragraph (
Central Office Switching Expense | Account 6210. |
Operator Systems Expense | Account 6220. |
Central Office Transmission Expense | Account 6230. |
(b) The expenses in these accounts are apportioned among the operations on the basis of the separation of the investments in central office equipment—Accounts 2210, 2220 and 2230, combined.