Local usage details (LUD) are a detailed record of
local call
In telephony, the term local call has the following meanings:
# Any call using a single switching center; that is, not traveling to another telephone network;
# A call made within a local calling area as defined by the local exchange carrier;
# ...
s made and received from a particular phone number. These records are regularly available to
police
The police are Law enforcement organization, a constituted body of Law enforcement officer, people empowered by a State (polity), state with the aim of Law enforcement, enforcing the law and protecting the Public order policing, public order ...
in the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
and
Canada
Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
with a
court order
A court order is an official proclamation by a judge (or panel of judges) that defines the legal relationships between the parties to a hearing, a trial, an appeal or other court proceedings. Such ruling requires or authorizes the carrying o ...
, and were traditionally subject to the same restrictions as
telephone tapping
Wiretapping, also known as wire tapping or telephone tapping, is the monitoring of telephone and Internet-based conversations by a third party, often by covert means. The wire tap received its name because, historically, the monitoring connecti ...
.
In the United States, LUDs may be legally used by the police without first obtaining a
warrant, as determined by ''
Smith v. Maryland'' (1979).
Other terms for call records include CDR (call detail records) or SMDR (station message detail recordings). These terms normally apply to "raw call records" before they have been processed to apply locations and rates.
See also
*
Pen register
A pen register, or dialed number recorder (DNR), is a device that records all numbers called from a particular telephone line. The term has come to include any device or program that performs similar functions to an original pen register, includin ...
Law enforcement in the United States
References
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