US Code regarding telephone privacy

http://www4.law.cornell.edu/uscode/search/display.html?terms=telephone%20customer%20information&url=/uscode/html/uscode47/usc_sec_47_00000222----000-.html
TITLE 47 > CHAPTER 5 > SUBCHAPTER II > Part I > § 222
§ 222. Privacy of customer information



Release date: 2006-01-11

(a) In general
Every telecommunications carrier has a duty to protect the confidentiality of proprietary information of, and relating to, other telecommunication carriers, equipment manufacturers, and customers, including telecommunication carriers reselling telecommunications services provided by a telecommunications carrier.

(b) Confidentiality of carrier information
A telecommunications carrier that receives or obtains proprietary information from another carrier for purposes of providing any telecommunications service shall use such information only for such purpose, and shall not use such information for its own marketing efforts.

(c) Confidentiality of customer proprietary network information
(1) Privacy requirements for telecommunications carriers
Except as required by law or with the approval of the customer, a telecommunications carrier that receives or obtains customer proprietary network information by virtue of its provision of a telecommunications service shall only use, disclose, or permit access to individually identifiable customer proprietary network information in its provision of (A) the telecommunications service from which such information is derived, or (B) services necessary to, or used in, the provision of such telecommunications service, including the publishing of directories.

(2) Disclosure on request by customers
A telecommunications carrier shall disclose customer proprietary network information, upon affirmative written request by the customer, to any person designated by the customer.

(3) Aggregate customer information
A telecommunications carrier that receives or obtains customer proprietary network information by virtue of its provision of a telecommunications service may use, disclose, or permit access to aggregate customer information other than for the purposes described in paragraph (1). A local exchange carrier may use, disclose, or permit access to aggregate customer information other than for purposes described in paragraph (1) only if it provides such aggregate information to other carriers or persons on reasonable and nondiscriminatory terms and conditions upon reasonable request therefor.


(d) Exceptions
Nothing in this section prohibits a telecommunications carrier from using, disclosing, or permitting access to customer proprietary network information obtained from its customers, either directly or indirectly through its agents—
(1) to initiate, render, bill, and collect for telecommunications services;
(2) to protect the rights or property of the carrier, or to protect users of those services and other carriers from fraudulent, abusive, or unlawful use of, or subscription to, such services;
(3) to provide any inbound telemarketing, referral, or administrative services to the customer for the duration of the call, if such call was initiated by the customer and the customer approves of the use of such information to provide such service; and
(4) to provide call location information concerning the user of a commercial mobile service (as such term is defined in section 332 (d) of this title)—
(A) to a public safety answering point, emergency medical service provider or emergency dispatch provider, public safety, fire service, or law enforcement official, or hospital emergency or trauma care facility, in order to respond to the user’s call for emergency services;
(B) to inform the user’s legal guardian or members of the user’s immediate family of the user’s location in an emergency situation that involves the risk of death or serious physical harm; or
(C) to providers of information or database management services solely for purposes of assisting in the delivery of emergency services in response to an emergency.