Platform for selectively providing a channel service unit/data service unit, a router/bridge, and a dial-up modem

• US 6,631,436 B1
• Filed: 08/31/2000
• Issued: 10/07/2003
• Est. Priority Date: 08/31/2000
• Status: Expired due to Fees

• Current Assignee: Comptrend Corporation
• Original Assignee: Comptrend Compound
• Inventors: Liu, Sheng-Wei, Chan, Tsai-Kuen
• Primary Examiner(s): Ray, Gopal C.
• Application Number:
  US09/652,885
• Time in Patent Office: 1,132 Days
• Field of Search: 710/12, 710/14, 710/22, 710/300, 710/301, 710/105, 710/305, 710/308, 710/317, 709/250, 711/105, 375/222, 379/88.17, 379/88.13, 379/93.14, 379/100.12, 379/900, 379/908, 379/74, 370/908, 370/910, 370/911
• US Class Current: 710/305
• CPC Class Codes: H04M 11/062 using different frequency bands for speech and other data

Abstract

A universal modem platform has different modems integrated therein for matching the protocols of telephone and data communications. The circuit structure of the universal modem platform primarily comprises a mother board and a plurality of baby boards. The mother board has a processing unit, a bit-stream/PCM converter, a cross switch, and high level data link controls. The baby board slot connectors connect the mother board with the baby boards through the cross switch, the bit-stream/PCM converter, and the high level data link controls.

Claims

1. A universal modem platform comprising a mother board and a plurality of baby board slot connectors for connecting the mother board with a plurality of baby boards to function as a modem, the mother board includes a bit-stream/PCM converter, high level data link controls, a cross switch, data is converted through the bit-stream/PCM converter or the high level data link controls by a connection of the cross switch, wherein products selected from one of the group consisting of a channel service unit/data service unit (CSU/DSU) series, a router/bridge series, and a dial-up modem series are integrated in a single platform modem.

2. The universal modem platform as claimed in claim 1, wherein the mother board has a power source, an RS232 communication port, a 10/100M Ethernet, a universal asynchronous receiver/transmitter, a DRAM, and direct memory access interface cards.

3. The universal modem platform as claimed in claim 2, wherein the bit-stream/PCM converter or the cross switch are formed by logic circuits;

subsequent to specific parameters being input to the mother board from the baby boards, the cross switch connects the signals of the baby boards with the signals of the bit-stream/PCM converter or the high level data link controls, to provide a product selected from one of the group consisting of the channel service unit/data service unit (CSU/DSU) series, and the router/bridge series.

4. The universal modem platform as claimed in claim 2, wherein the baby board slot connectors each have forty pins, a first pin is a TDO_S output mode;

a second pin is a TCLK_S output mode;

a third pin is a T8K_S output mode;

a fourth pin is a TC_T output mode;

a fifth pin is a RDI_S output mode;

a sixth pin is a RCLK_S output mode;

a seventh pin is a R8K_S output mode;

an eighth pin is a LOOP output mode;

a ninth pin is not defined;

a tenth pin is a SYS_CLK output mode;

an eleventh pin is not defined;

a twelfth pin is a EXIST# output mode;

a thirteenth pin is not defined;

a fourteenth pin is not defined;

a fifteenth pin is a RST# output mode;

a sixteenth pin is a INTI# output mode;

a seventeenth pin is a ALE output mode;

an eighteenth pin is a INTO# input mode;

a nineteenth pin is a READY input mode;

a twentieth pin is a CS2# output mode;

a twenty-first pin is a WR# output mode;

a twenty-second pin is a CS1# output mode;

a twenty-third pin is a RD# output mode;

a twenty-fourth pin is a CS0# output mode;

a twenty-fifth pin is a AD7 input/output mode;

a twenty-sixth pin is an AD6 output/input mode;

a twenty-seventh pin is an AD5 output/input mode;

a twenty-eighth pin is an AD4 output/input mode;

a twenty-ninth pin is an AD3 output/input mode;

a thirtieth pin is an AD2 output/input mode;

a thirty-first pin is an AD1 output/input mode;

a thirty-second pin is an AD0 output/input mode;

a thirty-third pin is an A9 output mode;

a thirty-fourth pin is an A8 output mode;

a thirty-fifth pin is a GND;

a thirty-sixth pin is a GND;

a thirty-seventh pin is at +5V;

a thirty-eighth pin is a +3V3;

a thirty-ninth pin is a GND;

a fortieth pin is a +3V3.

5. The universal modem platform as claimed in claim 1, wherein the baby boards are each selected from one of a xDSL interface card, a V.35/RS449 interface card, a T1/E1 interface card, and a T1/E1 drop/insert interface card with conversion.

6. The universal modem platform as claimed in claim 1, wherein the channel service unit/data service unit (CSU/DSU) is formed by the bit-stream/PCM converter, a the cross switch of the mother board, and the baby boards;

wherein data is communicated between the baby boards through the bit-stream/PCM converter and the cross switch.

7. The universal modem platform as claimed in claim 1, wherein the router/bridge is formed by the bit-stream/PCM converter, the cross switch, the high level data link controls, a DRAM, a 100/10M Ethernet, and the baby boards of the mother board;

wherein data is communicated between the baby boards through the cross switch, the bit-stream/PCM converter, and the high level data link controls using direct memory access of the DRAM.

8. The universal modem platform as claimed in claim 1, wherein the dial-up modem is formed by the bit-stream/PCM converter, the cross switch, the high level data link controls, a DRAM, a universal asynchronous receiver/transmitter, and the baby boards;

wherein data from the plurality of the baby boards are communicated with an RS232 port of the universal asynchronous receiver/transmitter through the cross switch, the bit-stream/PCM converter, and the high level data link controls using direct memory access of the DRAM.