Patent US3361961A successfully refreshed from Google Patents.
Patent US5751796A successfully refreshed from Google Patents.
US5751796A
Expired / Lapsed
US
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Rapid startup protocol for communication between a plurality of modems
Assignee: Paradyne Corp
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Filing: 1997-01-09
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Granted: 1998-05-12
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Expires: 2017-01-09
Abstract
Abstract A system having an improved startup sequence for connecting two communicating modems, wherein the system includes a calling modem and an answer modem for communicating across an established communication link. Preferably, the system uses V.34 modulation protocol for information transfer after startup. In accordance with one aspect of the invention, an improved startup method includes the step of transmitting a unique calling signal from the calling modem, wherein the calling signal identifies the configuration of the calling modem. The modem "configuration" includes information relating to the communication capabilities of the modem, as well as information relating to the physical interconnection (or communication link) of the modem. The method further includes the step of transmitting a unique answer signal from the answer modem to the calling modem, wherein the answer signal identifies the configuration of the answer modem. Thereafter, the system operates to analyze the configuration of the calling modem and answer modem to determine whether the established link passes through a hybrid converter circuit. If the established link does not pass through a hybrid circuit, then the system omits line probing and echo training sequences that are typically executed in connection with the V.34 modulation standard. If, however, the established link does pass through a hybrid circuit, then the system proceeds with the execution of the line probing and echo training in accordance with the V.34 protocol.
Inventors
- 👤 Robert Earl Scott
- 👤 Edward S. Zuranski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:03
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/18; H04W88/184; H04L; H04L5/00; H04L5/14; H04L5/1438; H04M; H04M11/00; H04M11/06; H04W76/00; H04W76/10; H04L69/00; H04L69/24; H04W88/16; H04W92/00; H04W92/02; H04W92/16; H04W92/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
115 words
In a system having a calling modem and an answer modem for communicating across an established communication link using V.34 modulation protocol for information transfer after startup, an improved startup method comprising the steps of: transmitting a unique calling signal from the calling modem, the calling signal identifying the configuration of the calling modem; transmitting a unique answer signal from the answer modem, the answer signal identifying the configuration of the answer modem; analyzing the configuration of the calling modem and answer modem to determine whether the established link passes through a hybrid converter circuit; and omitting the line probing and echo training, if the established link does not pass through a hybrid converter circuit.
Claim 2
Dependent Claim
115 words
In a system having a calling modem and an answer modem for communicating across an established communication link using V.34 modulation protocol for information transfer after startup, an improved startup method comprising the steps of: transmitting a unique calling signal from the calling modem, the calling signal identifying the configuration of the calling modem; transmitting a unique answer signal from the answer modem, the answer signal identifying the configuration of the answer modem; analyzing the configuration of the calling modem and answer modem to determine whether the established link passes through a hybrid converter circuit; and omitting the line probing and echo training, if the established link does not pass through a hybrid converter circuit.
Claim 3
Dependent Claim
35 words
The method as defined in claim 1, further including the step of proceeding with line probing and echo training in accordance with the V.34 protocol, if the established link passes through a hybrid converter circuit.
Claim 4
Dependent Claim
20 words
The method as defined in claim 1, wherein the calling signal includes frequency components of 1500 hertz and 1900 hertz.
Claim 5
Dependent Claim
24 words
The method as defined in claim 1, wherein the calling modem further includes configuration means for adjustably defining the configuration of the calling modem.
Claim 6
Dependent Claim
24 words
The method as defined in claim 1, wherein the answer modem further includes configuration means for adjustably defining the configuration of the answer modem.
Claim 7
Dependent Claim
173 words
In a system having a calling modem and an answer modem communicating across an established Public Switched Network (PSTN) communication link using a communication protocol that defines a startup sequence that precedes a communication sequence, wherein the startup sequence is defined by full-duplex communication between the calling and answer modems wherein the modems transmit and receive signals operate in the same frequency band, a method for achieving a time-efficient startup sequence comprising the steps of: transmitting a unique calling signal from the calling modem, the calling signal identifying the configuration of the calling modem; transmitting a unique answer signal from the answer modem, the answer signal identifying the configuration of the answer modem; analyzing the configuration of the calling modem and answer modem to determine whether the established link passes through a hybrid converter circuit; performing line probing and echo training sequence exchanges, if the established link passes through a hybrid converter; and omitting the line probing and echo training sequences, if the established link does not pass through a hybrid converter circuit.
Claim 8
Dependent Claim
173 words
In a system having a calling modem and an answer modem communicating across an established Public Switched Network (PSTN) communication link using a communication protocol that defines a startup sequence that precedes a communication sequence, wherein the startup sequence is defined by full-duplex communication between the calling and answer modems wherein the modems transmit and receive signals operate in the same frequency band, a method for achieving a time-efficient startup sequence comprising the steps of: transmitting a unique calling signal from the calling modem, the calling signal identifying the configuration of the calling modem; transmitting a unique answer signal from the answer modem, the answer signal identifying the configuration of the answer modem; analyzing the configuration of the calling modem and answer modem to determine whether the established link passes through a hybrid converter circuit; performing line probing and echo training sequence exchanges, if the established link passes through a hybrid converter; and omitting the line probing and echo training sequences, if the established link does not pass through a hybrid converter circuit.
Claim 9
Dependent Claim
16 words
The method as defined in claim 6, wherein the modem configuration includes information regarding network interconnection.
Claim 10
Dependent Claim
17 words
The method as defined in claim 7, wherein the modem configuration includes information regarding modem performance capabilities.
Claim 11
Dependent Claim
20 words
The method as defined in claim 6, wherein the calling signal includes frequency components of 1500 hertz and 1900 hertz.
Claim 12
Dependent Claim
24 words
The method as defined in claim 6, wherein the calling modem further includes configuration means for adjustably defining the configuration of the calling modem.
Claim 13
Dependent Claim
24 words
The method as defined in claim 6, wherein the answer modem further includes configuration means for adjustably defining the configuration of the answer modem.
Claim 14
Dependent Claim
125 words
In a system having a calling modem and an answer modem for communicating across an established communication link using V.34 modulation protocol for information transfer after startup, a computer readable storage medium containing program code for controlling an improved startup method comprising the steps of: transmitting a unique calling signal from the calling modem, the calling signal identifying the configuration of the calling modem; transmitting a unique answer signal from the answer modem, the answer signal identifying the configuration of the answer modem; analyzing the configuration of the calling modem and answer modem to determine whether the established link passes through a hybrid converter circuit; and omitting the line probing and echo training, if the established link does not pass through a hybrid converter circuit.
Claim 15
Dependent Claim
125 words
In a system having a calling modem and an answer modem for communicating across an established communication link using V.34 modulation protocol for information transfer after startup, a computer readable storage medium containing program code for controlling an improved startup method comprising the steps of: transmitting a unique calling signal from the calling modem, the calling signal identifying the configuration of the calling modem; transmitting a unique answer signal from the answer modem, the answer signal identifying the configuration of the answer modem; analyzing the configuration of the calling modem and answer modem to determine whether the established link passes through a hybrid converter circuit; and omitting the line probing and echo training, if the established link does not pass through a hybrid converter circuit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-11 | 2001-11-10 | 2002-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-11 | 2005-11-10 | 2006-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-11 | 2009-11-10 | 2010-05-12 | $7700.00 | Window Closed / Lapsed |