83 Ill. Adm. Code 730.405
Call Data Records
Section 730
Section 730.405 Call Data
Records
Recording devices, when used in
connection with telecommunications service to collect call data from which the
customer's bills are prepared, shall show:
a) Called customer's telephone number;
b) Calling customer's telephone number;
c) Date;
d) Time of day; and
e) Duration of message.