Communication system

• US 4,947,420 A
• Filed: 04/28/1989
• Issued: 08/07/1990
• Est. Priority Date: 04/28/1989
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Stahl, John I., Michalak, David J., Knapp, Klaus
• Primary Examiner(s): Ng, Jin F.
• Assistant Examiner(s): Augustus, Jhancy
• Application Number:
  US07/345,056
• Time in Patent Office: 466 Days
• Field of Search: 379/56, 379/57, 379/58, 379/59, 379/60, 379/61, 379/62, 379/63, 340/825.44, 340/825.54
• US Class Current: 340/7.21
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 88/185 Selective call encoders for paging networks, e.g. paging centre devices

Abstract

A selective call communication system for use by an untrained person is provided. The communication system includes a number of telephones located in different locations, connected to a central switching unit. A number of selective call radios, each having an address, are assigned to the central switching unit. Upon the use of the telephone, the central unit identifies the telephone in use, and initiates an alerting call to the corresponding selective call radio automatically. The selective call radios may be pagers or two-way radios. Other features such as radio to radio communication, and radio to telephone network communication may be incorporated into the system.

Claims

1. A communication system, comprising:

at least one selective call radio having an address,

at least one communicating means for use by untrained users to initiate a call, said communicating means being assigned to at least one selective call radio, wherein said assigned selective call radio may be addressed when said call is initiated,

a central switching unit coupled to said communicating means including;

means for identifying said communicating means when said call is initiated,

means for addressing the assigned selective call radio upon initiation of said call,

means for establishing communication between said communicating means and said assigned selective call radio.

2. A communication system as described in claim 1, wherein said selective call radio includes a transmitter for establishing two way communication with said communicating means.

3. A communication system as described in claim 2, wherein said central switching unit includes means for receiving information from said selective call radio.

4. A communication system as described in claim 3, wherein said central switching unit includes means responsive to said received information for addressing another selective call radio.

5. A communication system as described in claim 3, wherein said communication system further comprises a public switching telephone network coupled to said central switching unit for addressing said selective call radio via said public switching telephone network.

6. A communication system as described in claim 5, wherein said central switching unit comprises means responsive to said received information for establishing communication with said public switching telephone network.