High speed dial-up sevice using PCM modem tech

A modem and controller technology, applied in the field of data communication, can solve problems such as insufficient models, and achieve the effect of fast data transmission rate

Inactive Publication Date: 2003-02-19
MOTOROLA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current model will become insufficient

Method used

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  • High speed dial-up sevice using PCM modem tech
  • High speed dial-up sevice using PCM modem tech
  • High speed dial-up sevice using PCM modem tech

Examples

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Embodiment Construction

[0019] An exemplary point-to-point connection 10 using the present invention is shown in FIG. 1 . User A initiates a call using their analog modem 12a. The call reaches CO (Central Office) A 16 via some analog local loop 14 . From this point on, the call is converted to digital and goes all the way to CO B 20 digitally. The call is then converted back to analog and reaches subscriber B over some analog local loop 30 (using subscriber B's analog modem 12b).

[0020] Both A and B use the next-generation ITU-TV.90 analog PCM modem 12, which uses CM modulation in both directions of the call, currently under development in the ITU and TR-30.1 standards committees, and is known as the ITU- TV.90 Issue 2 Modem. This new standard will be numbered ITU-TV.92 when completed. Such a modem 12 is described in co-pending patent application Serial No. 09 / 390,106, filed September 3, 1999, entitled "METHOD AND APPARATUS FOR A START-UP PROCEDUREFOR DIGITAL AND ANALOG MODEMS UTILIZING PULSECO...

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Abstract

A high speed dial up service includes a multimedia unit (22) comprising of two (or more) digital modems (26) and a controller section (24). The controller (24) provides the interface between the two (or more) digital modems (26). When data is sent from a first analog modem (12a) to a second analog modem (12b), a user calls a first digital modem (26a) in the network. Next, the first digital modem (26a) establishes a connection with a second digital modem (26b). Segments of the controller (24) may be co-located or located in different locations and connected through either Internet or PSTN. Then, the second digital modem (26b) dials up the second analog modem (12b) under direction of the controller (24). Subsequently, the controller (24) commands the digital modems to establish a connection at the fastest possible symmetric rate, near-symmetric, or any other pre-configured rate. Last, the controller (24) bridges traffic between the digital modems and enables the two analog modems to communicate transparently.

Description

technical field [0001] This invention relates to data communication via telephony and networks, and more specifically to dial-up Internet access using PCM modem technology. Background technique [0002] Improved modem technology has dramatically increased the speed at which data can be sent and received over point-to-point and multipoint connections. Modems operating over digital connections (eg, DSL, ISDN, etc.) are capable of providing high throughput with minimal errors. However, digital modems are not an option for modems used on POTS (Plain Old Telephone System) lines. Some parts of the world's PSTN (Public Switched Telephone Network) still use analog lines, often in the form of twisted-pair copper wires carrying analog signals. Even though the central office (CO) has a digital infrastructure through digital switches and backbones, the CO to the home is still through an analog local loop. The analog local loop segment of POTS from the CO to the home is known in the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M3/00H04L5/14H04L25/49H04M11/00H04M11/06
CPCH04L5/1438H04L25/4927H04M11/06H04L12/00
Inventor 塞弗·麦雷班扎德胡安明
Owner MOTOROLA INC
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