Methods of establishing a two-way call in a radio communication system

• US 5,491,739 A
• Filed: 03/04/1994
• Issued: 02/13/1996
• Est. Priority Date: 03/04/1994
• Status: Expired due to Term

• Current Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Wadin, Craig P., Marko, Paul D.
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): OEHLING, GEORGE J
• Application Number:
  US08/205,455
• Time in Patent Office: 711 Days
• Field of Search: 379/57, 379/58, 379/59, 379/61, 379/63, 455/33.1
• US Class Current: 340/7.21
• CPC Class Codes: H04M 11/022 Paging systems personal calling arrangements or devices G08B3/1008; selective calling networks H04W84/022

Abstract

A method for providing two-way calling between first and second handsets (402, 404) using a base station (406) and a paging terminal (412). The method for making the call includes storing a base line phone number for each line within the base station (406). A communication link is established between the first handset (402) and the base station (406) and between the base station (406) and the paging terminal (412). The paging terminal (412) prompts the caller for information to be sent to the second handset and the caller responds by entering a sequence that allows the base station itself to forward the base line phone number and an alias code, representing the identification of the first handset, to the paging terminal (412). The paging terminal (412) then pages the second handset (404) with the base line phone number and the alias code. Any communciations device may return the call by calling the base line phone number and entering the alias code, thus establishing a communications link with the first handset (402).

Claims

1. A method of establishing a two-way call between a caller using a first cordless handset having an identification number and a second party having access to means for making telephone calls and a pager with a corresponding pager number, the two-way call being established over a system including a first base station with a two-way call feature and capable of wireless communication with the first cordless handset, a public switched telephone network coupled to the first base station through a plurality of lines, and a paging terminal coupled with the public switched telephone network and capable of paging the second party through the pager, the method comprising the steps of:

storing, in the first base station, a telephone number for each line;

establishing, by the caller using the first cordless handset, a first communication link between the first cordless handset and the first base station;

initiating, by the caller using the first cordless handset after establishing the first communication link, a paging service call with the paging terminal wherein a second communication link is established between the first base station and the paging terminal through the public switched telephone network, and wherein a line of the plurality of lines is used in establishing the second communication link;

entering, by the caller using the first cordless handset, a sequence which enables the two-way call feature;

assigning, by the first base station, an alias code representing the identification number of the first cordless handset;

sending, by the first base station to the paging terminal through the public switched telephone network in response to entering the sequence, data representing the telephone number of the line and the alias code;

terminating by the first base station, the first communication link;

transmitting, by the paging terminal after sending the data, to the second party a page including the data and the alias code; and

initiating, by the second party after receiving the data and the alias code, a return call to the telephone number of the line by using the data;

establishing, through the public switched telephone network, a connection between the second party and the line of the first base station;

requesting of the second party, by the first base station, the alias code; and

entering by the second party in response to the requesting the alias code, the alias code, and establishing, by the first base station, a connection between the first base station and the first cordless handset using the stored identification number represented by the alias code.

2. The method of establishing the two-way call of claim 1, wherein the data is the telephone number.

3. The method of establishing the two-way call of claim 1, further comprising the steps of:

encrypting, by the first base station before sending the data, the telephone number;

wherein the means for making telephone calls by the second party includes a second cordless handset and a second base station capable of wireless communication with the second cordless handset; and

wherein the step of making a return call includes decoding, by the second base station, the encrypted data thus re-creating the telephone number.

4. The method of establishing the two-way call of claim 1, further comprising the steps of:

sending, by the paging terminal to the caller after establishing the second communication link, a pager number prompt;

entering, by the caller using the first cordless handset in response to the pager number prompt, the pager number;

sending, by the paging terminal to the caller prior to the caller entering the sequence enabling the two-way call feature, an information prompt.

5. The method of establishing the two-way call of claim 1, wherein:

the means for making telephone calls includes a dial-back feature; and

the step of making the return call includes entering, by the second party using the dial-back feature, a dial-back function code.

6. The method of establishing the two-way call of claim 1, wherein the pager is a stand-alone pager.