Modem with call waiting
First Claim
1. For use with a modem connected to a telephone line and to a data terminal, an improvement to said modem for detecting a call waiting signal on said telephone line, comprising:
- first means for detecting a loss of carrier signal on said telephone line;
second means for detecting a presence of energy in a call progress band;
third means responsive to detection of said loss of said carrier signal and subsequent detection of said presence of said energy in said call progress band for signalling a user that a new call is waiting; and
fourth means for generating a selectable default response if said user does not respond within a predetermined time period.
6 Assignments
0 Petitions
Accused Products
Abstract
A modem is adapted to accommodate a call waiting feature so that a user can select to continue an ongoing call or accept an incoming call. The modem detects a call waiting signal and generates a call waiting message. Where a call waiting signal is preceded by a loss of carrier, the modem detects the loss of carrier and then detects the presence of energy in a call progress band indicating that a new call is waiting. The modem can be selectably programmed to process the call waiting signal or to provide a call waiting message to a communications software package that can process the call waiting signal. The modem, in conjunction with the communications of software package, responds to the call waiting signal by asking whether the user wants to answer the incoming call or continue with the ongoing communication. The modem generates a programmable default response if the user does not respond within a prescribed time.
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Citations
25 Claims
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1. For use with a modem connected to a telephone line and to a data terminal, an improvement to said modem for detecting a call waiting signal on said telephone line, comprising:
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first means for detecting a loss of carrier signal on said telephone line; second means for detecting a presence of energy in a call progress band; third means responsive to detection of said loss of said carrier signal and subsequent detection of said presence of said energy in said call progress band for signalling a user that a new call is waiting; and fourth means for generating a selectable default response if said user does not respond within a predetermined time period. - View Dependent Claims (2, 3, 4, 5)
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6. A method for selectively processing calls on a communications network having a modem, comprising:
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detecting a loss of a carrier signal; subsequently detecting a call waiting signal; responding to said loss of said carrier signal and to said call waiting signal by signalling a user that an incoming call is occurring; allowing said user to cause an answering of said incoming call or a continuing with an ongoing communication. - View Dependent Claims (7, 8, 9)
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10. A modem with call waiting handling ability, comprising:
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means for placing an outgoing data carrier on a telephone line; means for receiving an incoming data carrier from said telephone line; means for detecting an absence of said incoming data carrier; means for detecting a presence of call progress energy in a call progress energy band; and means for signalling an occurrence of a call waiting signal in response to detecting said absence of said incoming data carrier and subsequently detecting said presence of said call progress energy. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification