an operational support system includes a network interface and a report unit . the network interface receives an identifier and password from a user , determines whether to grant access to the operational support system based on the identifier and password , and transmits , when access is granted , the identifier and password to the report unit . the report unit automatically compares the identifier and password to stored identifiers and passwords and grants access to the report unit when the identifier and password correspond to one of the stored identifiers and passwords .