IPC Definitions - January 01, 2012
H04M 1/00 - Definition
This main group covers:
Substation equipment, e.g. for use by subscribers;
Constructional details of telephone sets;
Arrangements for indicating or recording called number or number of calling subscriber at the substation equipment;
Arrangements for answering calls and for recording messages and conversations at the substation equipment;
Substation extension, e.g. cordless telephones;
Arrangements for testing;
User guidance features in telephone sets;
Devices for signalling identity of wanted subscriber, e.g. telephone directories;
Substation equipment including speech amplifiers;
Arrangements for preventing unauthorized or fraudulent calling.
Relationship between large subject matter areas
Arrangements for services at the substation equipment are classified here. Arrangements for services at exchanges are classified at H04M 3/00.
References relevant to classification in this main group
This main group does not cover:
Subscriber services or facilities provided at exchanges | H04M 3/00 |
Prepayment telephone coin boxes | H04M 17/00 |
Current supply arrangements | H04M 19/08 |
Terminal devices in mobile radio systems | H04W 88/00 |
Attention is drawn to the following places, which may be of interest for search:
In-vehicle arrangements for holding or mounting articles, e.g. for telephones, radios and TV sets | B60R 11/02 |
Arrangements for converting discrete items of information into a coded form, e.g. keyboards | G06F 3/023 |
Interaction techniques for graphical user interfaces between user and computer | G06F 3/048 |
Digital output to displays? | G06F 3/14 |
Housing or supporting of instruments or other apparatus | G12B 9/00 |
Keyboard switches in general | H01H 13/70, H03K 17/94 |
Casing, cabinets or drawers for electric apparatus | H05K 5/00 |