Identification of called directory number at multiple directory

Details Identification of called directory number at multiple directory Identification of called directory number at multiple directory

1994-11-23

1996-08-06

Hofsass, Jeffery

Telephonic communications

Polystation line system

379164, 379251, 379252, 379373, 379376, H04M 520, H04M 1300

Patent

active

055442358

ABSTRACT:
A telecommunication network having a switching system connected to a called station by a line that provides notification to a called party of information relating to an incoming call. This information generally consists of the called number, but may also include an extension or other code. The called party identification is delivered to the called telephone station set during the silent period after ringing, or, advantageously, before ringing starts. A signal (e.g., FSK) is sent to the called telephone station set shortly before the ringing signal is sent to the called station. A converter at the customer premises receives the FSK signal and demodulates it. A control unit connected to the converter then causes the called DN to be displayed, may cause a distinctive ring to be made, or take other action depending upon its program.

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