USRE42661E1 - Method and apparatus for fast V.90 modem startup - Google Patents
Method and apparatus for fast V.90 modem startup Download PDFInfo
- Publication number
- USRE42661E1 USRE42661E1 US12/586,907 US58690709A USRE42661E US RE42661 E1 USRE42661 E1 US RE42661E1 US 58690709 A US58690709 A US 58690709A US RE42661 E USRE42661 E US RE42661E
- Authority
- US
- United States
- Prior art keywords
- modem
- capabilities exchange
- exchange phase
- training
- protocol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime, expires
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1438—Negotiation of transmission parameters prior to communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4902—Pulse width modulation; Pulse position modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/066—Telephone sets adapted for data transmision
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/24—Negotiation of communication capabilities
Abstract
Description
TABLE 1 |
Conventional V.90 Modem Startup |
PROTOCOL | OPERATION | TIME (seconds) |
— | |
1 |
— | |
1 |
V.8bis | Capabilities Exchange | 3.5 |
V.8 | Capabilities Exchange | 3.5 |
V.90 |
Probing & Ranging | 1.5 |
V.90 Phase 3 | Digital Impairment Learning; | 8.5 |
Initial APCM Training | ||
V.90 Phase 4 | Final APCM Training; | 2.5 |
Set Power Levels; | ||
Constellation Transmission | ||
V.42/V.42bis | Error Correction; | 0.5 |
Data Compression | ||
— | Login | 0.5-5 |
TOTAL = 22.5-27.0 | ||
TABLE 2 |
Fast V.90 Modem Startup |
PROTOCOL | OPERATION | TIME (seconds) |
— | Dialing | 1 |
|
1 | |
V.8bis (abbreviated) | Capabilities Exchange | 1 |
— | Modified |
1 |
V.90 Phase 3 + | Initial APCM Training; | 2.5 |
V.42/V.42bis | Error Correction; | |
Data Compression | ||
V.90 Phase 4 + Login | Final APCM Training; | 2-5 |
Set Power Levels; | ||
Constellation Transmission; | ||
Username & Password | ||
TOTAL = 8.5-11.5 | ||
Claims (34)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/586,907 USRE42661E1 (en) | 1999-04-12 | 2009-09-28 | Method and apparatus for fast V.90 modem startup |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12887499P | 1999-04-12 | 1999-04-12 | |
US09/361,842 US6819749B1 (en) | 1999-04-12 | 1999-07-27 | Method and apparatus for fast V.90 modem startup |
US10/753,570 US7062022B2 (en) | 1999-04-12 | 2004-01-08 | Method and apparatus for fast V.90 modem startup |
US11/205,896 US7277531B2 (en) | 1999-04-12 | 2005-08-16 | Method and apparatus for fast V.90 modem startup |
US12/586,907 USRE42661E1 (en) | 1999-04-12 | 2009-09-28 | Method and apparatus for fast V.90 modem startup |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/205,896 Reissue US7277531B2 (en) | 1999-04-12 | 2005-08-16 | Method and apparatus for fast V.90 modem startup |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE42661E1 true USRE42661E1 (en) | 2011-08-30 |
Family
ID=35513934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/586,907 Expired - Lifetime USRE42661E1 (en) | 1999-04-12 | 2009-09-28 | Method and apparatus for fast V.90 modem startup |
Country Status (1)
Country | Link |
---|---|
US (1) | USRE42661E1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230110136A1 (en) * | 2020-03-13 | 2023-04-13 | Oleksandr Vasylyovych TSARUK | Method of quick connection of pstn modems and pstn modem with fast connection according to such method |
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