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Reserved speech path forming method in a parallel-connected telephone system

  • US 5,838,778 A
  • Filed: 01/19/1996
  • Issued: 11/17/1998
  • Est. Priority Date: 04/26/1995
  • Status: Expired due to Fees
First Claim
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1. A method for forming a reserved speech path in a parallel-connected telephone system comprising at least two telephone sets connected in parallel to a common telephone line, said method comprising the steps of:

  • determining, at a first telephone set, whether a second telephone set connected in parallel with said first telephone set to said common telephone line within said parallel-connected telephone system is in an on-line state;

    permitting input of a reserved function key at said first telephone set without disconnecting said second telephone set from said common telephone line, when said second telephone set within said parallel-connected telephone system is in said on-line state;

    setting said first telephone set in a reserved speech path mode in response to input of said reserved function key;

    determining, at said first telephone set, whether said second telephone set shifts from said on-line state to an off-line state; and

    informing a user of said first telephone set of the availability of the common telephone line for dialing a telephone number and forming said reserved speech path, after said second telephone set within said parallel-connected telephone system shifts from said on-line state to said off-line state.

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