IPC Definitions - January 01, 2012

H04M 1/00 - Definition fr

Definition statement

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

Informative references

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