Communication device between a digital network and a telematic equipment

• US 5,331,640 A
• Filed: 05/29/1990
• Issued: 07/19/1994
• Est. Priority Date: 10/17/1988
• Status: Expired due to Term

• Current Assignee: Netbricks
• Original Assignee: Omnitel Corporation
• Inventors: Ledu, Jacques
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): Hom, Shick
• Application Number:
  US07/460,136
• Time in Patent Office: 1,512 Days
• Field of Search: 375/7, 375/8, 375/121, 375/100, 370/110.1, 370/77, 358/442, 358/426
• US Class Current: 370/420
• CPC Class Codes: H04Q 11/0428 Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
• CPC Class Codes: H04Q 11/0471 Terminal access circuits
• CPC Class Codes: H04Q 2213/034 Codec; PCM compression
• CPC Class Codes: H04Q 2213/093 Personal computer
• CPC Class Codes: H04Q 2213/174 Data transmission
• CPC Class Codes: H04Q 2213/199 Modem

Abstract

A device for providing communications between an integrated services digital network (ISDN) and telematic equipment is provided. This device has an S-interface which is connected to the network, a coding-filtering-decoding circuit connected to the S-interface, and a modulator-demodulator circuit directly connected to said coding-filtering-decoding circuit and telematic equipment.

Claims

1. Device for providing communication between an integrated services digital network and telematic equipment, which includes a S-interface to be connected to said network, and a coding-filtering-decoding circuit connected to said S-interface,

said device further including a modulator-demodulator circuit directly connected to said coding-filtering-decoding circuit and to be connected to said telematic equipment.

2. Device according to claim 1, wherein said modulator-demodulator circuit includes several components, each for supporting transfers according to at least one specific protocol.

3. Device according to claim 1, further including at least one circuit for allowing transfers according to protocols specific to said digital network and connected at a position located between said S-interface and said coding-filtering-decoding circuit.

4. Device according to claim 1, further including a driving and controlling circuit for constituting an interface with a microcomputer.

5. Device according to claim 1, wherein the entire device is located on a printed circuit board.

6. Device according to claim 5, wherein said board includes an edge connector to be fitted in an elongated connector of a mother board of a microcomputer and including connections of driving and controlling circuits.

7. Device according to claim 6, said board further includes separated connectors for connecting said S-interface and for connecting said modulator-demodulator.