Communication terminal for wire and wireless internet phone

• US 20040090949A1
• Filed: 04/16/2003
• Published: 05/13/2004
• Est. Priority Date: 11/11/2002
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Hwang, Dae-Hwan, So, Woon-Seob
• Granted Patent: US 7,522,583 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 12/2856 Access arrangements, e.g. Internet access asynchronous transfer mode networks H04L12/5601; broadband local area networks H04L12/2801; optical access or distribution networks H04Q11/0067; access to open networks H04L12/5691; digital subscriber line end-user equipment and bit-level processing of data on a PSTN-based network H04M11/00; home network gateways H04L12/2834; wireless access networks H04W
• CPC Class Codes: H04L 12/2898 Subscriber equipments DSL modems H04M11/062; cable modems H04L12/2801
• CPC Class Codes: H04L 12/5601 Transfer mode dependent, e.g. ATM
• CPC Class Codes: H04L 2012/5607 Radio
• CPC Class Codes: H04L 2012/5616 Terminal equipment, e.g. codecs, synch.
• CPC Class Codes: H04L 2012/5618 Bridges, gateways [GW] or interworking units [IWU]
• CPC Class Codes: H04L 2012/5667 IP over ATM
• CPC Class Codes: H04L 2012/5671 Support of voice
• CPC Class Codes: H04M 1/2535 adapted for voice communication over an Internet Protocol [IP] network Voice over Internet Protocol (VoIP) network equipment and services H04M7/006; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04M 1/725 Cordless telephones user interfaces specially adapted therefor H04M1/724
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation

Abstract

Disclosed is a communication terminal for a wire and wireless network phone which comprises: a communication service controller, including a RISC processor, for processing protocols that satisfy respective communication interfaces in hardware and software manners; a reset unit for applying a reset signal to be used for the communication service controller; a clock signal unit for supplying clock signals needed for the communication service controller; a memory connected to the communication service controller, for storing a start program, a terminal management program, user data, and various application programs; and an access unit for providing a VoIP telephone function, a DSL access function, an analog telephone function, an Ethernet access function, a wireless network access function, and an EIA232 access function.

Claims

1. A communication terminal for a wire and wireless network phone comprising:

a communication service controller, including a RISC (reduced instruction set computer) processor, for processing protocols that satisfy respective communication interfaces in hardware and software manners;

a reset unit for applying a reset signal to be used for the communication service controller;

a clock signal unit for supplying clock signals needed for the communication service controller;

a memory connected to the communication service controller, for storing a start program, a terminal management program, user data, and various application programs; and

an access unit for providing a VoIP (voice over Internet protocol) telephone function, a DSL (digital subscriber line) access function, an analog telephone function, an Ethernet access function, a wireless network access function, and an EIA232 (electronic industries association

     232) access function.

2. The communication terminal of claim 1, further comprising:

a keyboard, directly connected to the communication service controller, for performing a key input function by a user; and

an LCD (liquid crystal display), directly connected to the communication service controller, for displaying states of the terminal and messages necessary for the user.

3. The communication terminal of claim 1, wherein the memory comprises:

a first memory accessible through 8-bit, 16-bit, and 32-bit buses, for storing the start program and the terminal management program; and

a second memory accessible through 8-bit, 16-bit, and 32-bit buses, for storing the user data and the various application programs.

4. The communication terminal of claim 1, wherein the access unit comprises:

a handset access unit, connected to the communication service controller, for performing digital/analog reciprocal conversion on various tone signals and voice signals, and performing amplification on analog signals;

a DSL access unit, connected between the communication service controller and the DSL, for performing an access function of the DSL of the terminal;

an analog telephone access unit, connected to the communication service controller, the analog telephone, and the DSL access unit, for performing an access function of the analog telephone;

an Ethernet physical access unit, connected between the communication service controller and an Ethernet, for performing an access function of the Ethernet physical layer;

a wireless access unit, connected to the communication service controller, for performing an access function to a wireless network; and

an EIA232 access unit connected through an EIA232 port to a terminal for providing a network access service function.

5. The communication terminal of claim 4, wherein the DSL access unit is controlled by the communication service controller through a local bus, it is connected to the communication service controller through a UTOPIA (universal test and operation physical interface for ATM) bus to transmit and receive data, and it is connected to the DSL to directly transmit analog data and convert the analog data into digital data according to a DSL standard.

6. The communication terminal of claim 5, wherein the DSL access unit transmits transmit-related signals including transmit data signals, transmit cell start signals, transmit enable signals, transmit cell enable signals, and transmit data clock signals;

and receive-related signals including receive data signals, receive cell start signals, receive enable signals, receive cell receive signals, and receive data clock signals through the UTOPIA bus.

7. The communication terminal of claim 5, wherein the DSL access unit transmits data signals, address signals, data read signals that are control signals, data write signals, address valid signals, and chip select signals, through the local bus.

8. The communication terminal of claim 4, wherein the Ethernet physical layer access unit is connected to the communication service controller through a standard MII bus to perform a physical layer access function of the 10 Base-T or 100 Base-T Ethernet.

9. The communication terminal of claim 8, wherein the Ethernet physical layer access unit transmits transmit-related signals including transmit data signals, transmit enable signals, transmit data clock signals, and transmit error signals;

and receive-related signals including receive data signals, receive enable signals, receive data clock signals, receive error signals, carrier sense signals, collision detect signals, interrupt signals, control data clock signals, and control data signals.

10. The communication terminal of claim 1, wherein the communication terminal for a wire and wireless network phone is connected to the network through an Ethernet line and to the DSL access unit through a DSL, and the DSL access unit is connected to the network and the PSTN (public switched telephone network) through an ATM switch.

11. The communication terminal of claim 1, wherein the communication service controller comprises an AHB (advanced host bus), an APB (advanced peripheral bus), an APB bridge for connecting the AHB and the APB, a system-related unit connected to the APB, and an access-related unit connected to the APB.

12. The communication terminal of claim 11, wherein the system-related unit comprises:

a reset controller for generating reset signals needed for respective controllers according to externally input reset signals, and applying them to the AHB;

a clock signal controller for receiving externally input clock signals, and generating clock signals having frequencies required by the respective controllers;

a RISC (reduced instruction set computer) core, that is a RISC processor having 32-bit processing performance, for performing a whole central control processing function of the communication service controller;

an external bus controller for accessing the memory;

a DMA (direct memory access) controller for accessing the memory without control by the RISC core;

a bus arbiter, connected to the AHB together with the RISC core, for controlling the right to use buses provided between the respective controllers;

an interrupt controller for processing internal and external interrupts generated during execution of a program; and

a timer for providing reference timing of the respective controllers.

13. The communication terminal of claim 11, wherein the access-related unit comprises:

a UART (universal asynchronous receiver/transmitter) controller for controlling data input for EIA232 (electronic industries association

     232) communication, and processing the data according to the UART protocol;

an input/output controller for processing inputs/outputs of key input signals and display output signals;

a tone module and codec controller for generating DTMF (dual tone multi frequency) data, monotone data, and melody data following the ITU-T Q.23 standard;

an ATM SAR (asynchronous transfer mode segmentation and reassemble) controller for segmenting packet-type user data read from the memory through the APB into ATM cells to transmit them to a UTOPIA interface, and converting the ATM cells received from the UTOPIA interface into packet-type user data to transmit them to the memory through the APB;

an Ethernet MAC (media access controller) for processing a media access control function protocol of an Ethernet interface; and

a wireless MAC for processing a media access control function protocol of a wireless modem interface.