Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent
1988-01-22
1989-02-21
Schreyer, Stafford D.
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
379100, 178 1, 178 2R, H04M 1100, H04N 132
Patent
active
048072761
ABSTRACT:
In a communication system having an automatic transmission/reception function to perform data communications through telephone lines associated with teletex systems, facsimile systems and the like, re-transmission operations are performed when an addressee called for communications is busy (calling) or when communications is interrupted after an addressee has responded. In the re-transmission operation, a response from an addressee is detected and decided as to whether the response is automatically originated from a communication unit or originated by a person. When the latter response is detected, a wrong telephoning is decided and restrictions are placed on the re-transmission operation to thereby minimize trouble given to the addressee. On the condition that a wrong telephoning and a communication failure transmission operation are decided, the addressor station sequentially reduces the calling time or response waiting time in the communication system for each of re-transmission operations following the communication failure transmission operation, and on the condition that a response is received but no negotiation is settled within a predetermined period of time whereby a wrong telephoning and a communication failure transmission operation are decided, the addressor station inhibits communication operations following the communication failure transmission operation when time runs within a midnight discount time zone and permits the communication operations, inclusive of the initial transmission operation, to be performed twice when time runs outside the midnight discount time zone.
REFERENCES:
patent: 4471489 (1984-09-01), Konetski et al.
patent: 4595951 (1986-06-01), Filliman
patent: 4710951 (1987-12-01), Hezono
Hitachi , Ltd.
Schreyer Stafford D.
LandOfFree
Re-transmission method and apparatus in communication system usi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Re-transmission method and apparatus in communication system usi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Re-transmission method and apparatus in communication system usi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1528846