Call reservation technique for a subscriber of another exchange utilizing a no. 7 signal

• US 5,933,485 A
• Filed: 12/04/1996
• Issued: 08/03/1999
• Est. Priority Date: 12/04/1995
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Chang, Jeong-Sik, Jung, Byung-Hae
• Primary Examiner(s): MATAR, AHMAD
• Application Number:
  US08/760,565
• Time in Patent Office: 972 Days
• Field of Search: 379/209, 379/208, 379/201, 379/207, 379/230
• US Class Current: 379/210.01
• CPC Class Codes: H04M 3/4228 in networks
• CPC Class Codes: H04Q 2213/13102 Common translator
• CPC Class Codes: H04Q 2213/13103 Memory
• CPC Class Codes: H04Q 2213/13176 Common channel signaling, CCS7
• CPC Class Codes: H04Q 2213/13348 Channel/line reservation
• CPC Class Codes: H04Q 2213/1338 Inter-exchange connection
• CPC Class Codes: H04Q 3/54533 Configuration data, translation, passwords, databases

Abstract

A call reservation technique of a first exchange serving a call of an outgoing subscriber and a second exchange serving a call of an incoming subscriber includes: outputting a message requiring a call reservation registration from the first exchange to the second exchange at the time of reserving the call, and in the second exchange, storing call reservation information according to the message requiring the call reservation registration, the second exchange being transferred to a state of the call reservation registration in response to the message requiring the call reservation registration and simultaneously outputting a call reservation registration response message, and in the first exchange, storing the call reservation information according to the call reservation registration response message and the first exchange being transferred to a state of a call reservation; and checking the state of the incoming subscriber in the state of the call reservation registration in the second exchange and then inputting the message requiring the call reservation service to the second exchange when the incoming subscriber is in an idle state, and checking the state of the outgoing subscriber according to the message requiring the call reservation service in the first exchange and then forming a calling path of the outgoing subscriber and the incoming subscriber in the first exchange and the second exchange and processing the call, when the outgoing subscriber is in the idle state.

Claims

1. A call reservation method of a first exchange serving a call of an outgoing subscriber and a second exchange serving a call of an incoming subscriber, comprising the steps of:

outputting a message requiring a call reservation registration from said first exchange to said second exchange at the time of reserving said call;

storing call reservation information in said second exchange, according to said message requiring said call reservation registration;

transferring said second exchange to a state of said call reservation registration in response to said message requiring said call reservation registration and simultaneously outputting a call reservation registration response message to said first exchange;

storing said call reservation information in said first exchange according to said call reservation registration response message and transferring said first exchange to a state of a call reservation;

said first exchange checking said state of said incoming subscriber in said second exchange upon said second exchange being in said state of said call reservation registration and then inputting said message requiring said call reservation service to said second exchange upon said incoming subscriber being in an idle state;

checking said state of said outgoing subscriber in said first exchange according to said message requiring said call reservation service and then forming a calling path of said outgoing subscriber and said incoming subscriber in said first exchange and said second exchange; and

processing said call, upon said outgoing subscriber being in said idle state.

2. A call reservation method of a first exchange serving a call of an outgoing subscriber and a second exchange serving a call of an incoming subscriber, comprising the steps of:

outputting a message requiring a call reservation registration from said first exchange to said second exchange at the time of reserving said call;

storing call reservation information in said second exchange according to said message requiring said call reservation registration;

transferring said second exchange to a state of said call reservation registration in response to said message requiring said call reservation registration and simultaneously outputting a call reservation registration response message to said first exchange;

storing said call reservation information in said first exchange according to said call reservation registration response message and transferring said first exchange to a state of a call reservation;

said first exchange checking said state of said incoming subscriber in said second exchange upon said second exchange being in said state of said call reservation registration and then inputting said message requiring said call reservation service to said second exchange upon said incoming subscriber being in an idle state;

checking said state of said outgoing subscriber in said first exchange according to said message requiring said call reservation service in said first exchange and then forming a calling path of said outgoing subscriber and said incoming subscriber in said first exchange and said second exchange;

processing said call upon said outgoing subscriber being in said idle state;

outputting a message requiring a call reservation cancellation from said first exchange at the time of receiving a call reservation cancellation code upon said second exchange being in said state of said call reservation;

responding to said message requiring said state of said call reservation cancellation from said first exchange and deleting said call reservation information in said second exchange;

and deleting said call reservation information in said second exchange according to said response message of said call reservation cancellation in said first exchange.

3. A method of handling a reserved call between a first exchange serving a call of an outgoing subscriber while in a call reservation state, and a second exchange serving a call of an incoming subscriber while in a call reservation registration state, comprising the steps of:

transmitting a message requiring a call reservation service upon an incoming subscriber in said second exchange being in said call reservation registration state;

checking a state of said outgoing subscriber reserving said call in said first exchange receiving said message requiring said call reservation service;

outputting a response message notifying a call reservation service requirement failure upon said outgoing subscriber being not in an idle state;

repeatedly performing said checking and outputting steps by transferring said state of said incoming subscriber to said state of said call reservation registration in said second exchange receiving said response message of said call reservation service requirement failure;

outputting a response message of a call reservation service requirement success upon said outgoing subscriber being in an idle state;

transferring said state of said incoming subscriber to a call reservation service standby state in said second exchange receiving said response message of said call reservation service requirement success; and

forming a calling path of said outgoing subscriber and said incoming subscriber in said first exchange and said second exchange, so as to perform a calling service.

4. A call reservation apparatus including a first exchange serving a call of an outgoing subscriber and a second exchange serving a call of an incoming subscriber, comprising:

a means for outputting a message requiring a call reservation registration from said first exchange to said second exchange at the time of reserving said call;

a means for storing call reservation information in said second exchange according to said message requiring said call reservation registration;

a means for transferring said second exchange to a state of said call reservation registration in response to said message requiting said call reservation registration and simultaneously outputting a call reservation registration response message to said first exchange;

a means for storing said call reservation information in said first exchange according to said call reservation registration response message and transferring said first exchange to a state of a call reservation;

said first exchange including a means for checking said state of said incoming subscriber in said second exchange upon said second exchange being in said state of said call reservation registration and then inputting said message requiring said call reservation service to said second exchange upon said incoming subscriber being in an idle state;

a means for checking said state of said outgoing subscriber in said first exchange according to said message requiring said call reservation service in said first exchange and then forming a calling path of said outgoing subscriber and said incoming subscriber in said first exchange and said second exchange; and

a means for processing said call, upon said outgoing subscriber being in said idle state.

5. A call reservation apparatus including a first exchange serving a call of an outgoing subscriber and a second exchange serving a call of an incoming subscriber, comprising:

a means for outputting a message requiring a call reservation registration from said first exchange to said second exchange at the time of reserving said call;

storing call reservation information in said second exchange according to said message requiring said call reservation registration;

a means for transferring said second exchange to a state of said call reservation registration in response to said message requiring said call reservation registration and simultaneously outputting a call reservation registration response message to said first exchange;

a means for storing said call reservation information in said first exchange according to said call reservation registration response message and transferring said first exchange to a state of a call reservation;

said first exchange including a means for checking said state of said incoming subscriber in said second exchange upon said second exchange being in said state of said call reservation registration and then inputting said message requiring said call reservation service to said second exchange upon said incoming subscriber being in an idle state;

a means for checking said state of said outgoing subscriber in said first exchange according to said message requiring said call reservation service and then forming a calling path of said outgoing subscriber and said incoming subscriber in said first exchange and said second exchange;

a means for processing said call upon said outgoing subscriber being in said idle state;

a means for outputting a message requiring a call reservation cancellation from said first exchange at the time of receiving a call reservation cancellation code upon said second exchange being in said state of said call reservation;

a means for responding to said message requiring said state of said call reservation cancellation from said first exchange and deleting said call reservation information in said second exchange; and

a means for deleting said call reservation information according to said response message of said call reservation cancellation in said first exchange.

6. An apparatus for handling a reserved call between a first exchange serving a call of an outgoing subscriber while in a call reservation state, and a second exchange serving a call of an incoming subscriber while in a call reservation registration state, comprising:

a means for transmitting a message requiring a call reservation service upon an incoming subscriber in said second exchange being in said call reservation registration state;

a means for checking a state of said outgoing subscriber reserving said call in said first exchange receiving said message requiring said call reservation service;

a means for outputting a response message notifying a call reservation service requirement failure upon said outgoing subscriber not being in an idle state;

a means for repeatedly performing said checking and outputting steps by transferring said state of said incoming subscriber to said state of said call reservation registration in said second exchange receiving said response message of said call reservation service requirement failure;

a means for outputting a response message of a call reservation service requirement success said outgoing subscriber being in an idle state;

a means for transferring said state of said incoming subscriber to a call reservation service standby state in said second exchange receiving said response message of said call reservation service requirement success; and

a means for forming a calling path of said outgoing subscriber and said incoming subscriber in said first exchange and said second exchange, so as to perform a calling service.