Communications system having pre-defined calling group

• US 20050014522A1
• Filed: 06/28/2004
• Published: 01/20/2005
• Est. Priority Date: 01/15/1997
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Labs Incorporated (AT&T, Inc.)
• Inventors: Goldberg, Andrew, Coppola, Andrew, Tirabassi, Karen, Melampy, Patrick, Stanhope, Mary, Butz, Greg
• Granted Patent: US 7,200,415 B2
• Time in Patent Office: Days
• US Class Current: 455/518
• CPC Class Codes: H04M 2203/2044 Group features, e.g. closed user group
• CPC Class Codes: H04M 2207/18 wireless networks
• CPC Class Codes: H04M 3/382 using authorisation codes or passwords
• CPC Class Codes: H04M 3/44 Additional connecting arrangements for providing access to frequently-wanted subscribers, e.g. abbreviated dialling at the subscriber's set H04M1/27; automatic redialling H04M3/424
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 8/186 Processing of subscriber group data
• CPC Class Codes: H10K 19/00 Integrated devices, or assemblies of multiple devices, comprising at least one organic element specially adapted for rectifying, amplifying, oscillating or switching, covered by group H10K10/00

Abstract

A communications system having a pre-defined calling group with a plurality of members is disclosed. A plurality of personal communication devices (PCDs) each have a system ID and a group ID, and each member of the group is assigned one of the PCDs. The system ID and the group ID both have a predetermined characteristic, where each system ID has a first variation thereof and each group ID has a second variation. A first group -member having a first PCD contacts a second member having a second PCD by entering into the first PCD the second PCD group ID. The first PCD transmits the first PCD system ID and the second PCD group ID to a communications switch. Based on the first PCD system ID, the communications switch locates a record for the first PCD in a switch database and determines therefrom that the first PCD can contact the second PCD by way of the second PCD group ID. A group database in switchable communication with the communications switch has the system ID and group ID for each group member PCD. The communications switch forwards the contact and the second PCD group ID to the group database for further processing. The group database determines that the second PCD group ID is located therein, locates the second PCD system ID based on the second PCD group ID, and forwards the attempted contact and the second PCD system ID to an appropriate communications switch for further processing.

Claims

1. A method of communicating within a pre-defined calling group having a plurality of members, the method comprising:

providing a pre-defined calling group having a plurality of members, each member of the group being assigned a respective personal communication device (PCD) having a system ID and a group ID that are unique from system IDs and group IDs of PCDs of other members of the group;

entering, into a first PCD of a first member of the group, a group ID of a second PCD;

transmitting, from the first PCD to a communications switch, a system ID of the first PCD and the group ID of the second PCD; and

locating a record for the first PCD in a database based on the system ID of the first PCD;

determining, based on the record for the first PCD, that the first PCD is allowed to contact the second PCD by way of the group ID of the second PCD;

determining the system ID of the second PCD based on the group ID of the second PCD; and

establishing a telecommunications connection between the first PCD and the second PCD.

2. The method of claim 1 further comprising preventing the first PCD from receiving a telephone call from a party who is not a member of the group.

3. The method of claim 1, wherein the pre-defined calling group comprises at least one restricted member, and wherein the method further comprises preventing a telecommunications connection between the first PCD and the at least one restricted member.

4. The method of claim 1, wherein a number of digits in the system ID is different from a number of digits in the group ID.

5. The method of claim 1, wherein the first PCD comprises a cellular telephone and wherein the system ID of the first PCD comprises a telephone number of the first PCD.

6. The method of claim 1, wherein the locating, determining, and establishing acts are performed by the communications switch.