Method for auto answering a call based on caller ID

• US 6,018,668 A
• Filed: 11/04/1997
• Issued: 01/25/2000
• Est. Priority Date: 11/04/1997
• Status: Expired due to Term

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Schmidt, Paul
• Primary Examiner(s): TO, DORIS HA
• Application Number:
  US08/964,215
• Time in Patent Office: 812 Days
• Field of Search: 455/414, 455/415, 455/518, 455/519, 455/445, 455/426, 455/517, 455/520, 455/416, 455/417, 455/424, 455/425, 455/435, 455/515, 455/521, 455/524, 455/526, 379/142, 379/157, 379/158
• US Class Current: 455/518
• CPC Class Codes: H04W 4/12 Messaging; Mailboxes; Announcements

Abstract

An auto answer cellular phone system is described in which the caller ID field of an originating cellular page message is modified to be a group ID number designating a plurality of cellular phones within a group. In an example embodiment, an originating phone dials a group phone number, the group phone number is routed to a group ID server by the mobile radio switch. The group ID server looks up the group number in a lookup-table to determine which cellular phones are included in the particular group and then forwards the individual group members ID codes to the switch for connection to the originating phone. Before sending the group members'"'"' ID codes to the switch, the group ID server 21 replaces the caller ID field from the originating phone ID to the group number ID. This tells the mobile stations that the call is a group call, as opposed to an individual call and forces the mobile stations into an auto-answer mode such that the mobile station then acts as a dispatch radio, as opposed to a human-answer cellular phone.

Claims

1. A method of connecting a phone call from an originating phone having an originating phone identifier to a group of phones each having a destination phone identifier and collectively having a group phone identifier, the originating phone identifier being contained in a caller id field of a call request issued by the originating phone, the method comprising the steps of:

receiving the associated group phone identifier at a group call server;

removing the originating phone identifier from the caller id field;

writing the group phone identifier into the caller id field;

identifying the destination phone identifiers for each of the phones in the group of phones based on the associated group phone identifier received by the group call server;

issuing routing instructions from the group call server to a radio switch identifying each of the destination phone identifiers for each phone in the group of phones;

receiving the routing instructions from the group call server and routing a page request including the caller id field with the group phone identifier to each phone in the group of phones;

receiving the page request;

reading the group phone identifier from the caller id field; and

looking up the group phone identifier in a group identifier lookup table.

2. A method according to claim 1, wherein the group of phones is a group including at least one cellular phone.

3. A method according to claim 1, further including the step of:

looking up the destination phone identifiers in a memory lookup table.

4. A method according to claim 1, further including:

if a match between the group phone identifier from the caller id field and a group phone identifier in the group identifier lookup table is identified, automatically answering the phone call from the originating phone.

5. A method according to claim 4, wherein the automatic answering occurs at a phone in the group of phones having a microphone, the method further including:

muting the microphone.

6. A method according to claim 5, further including:

aerially broadcasting the phone call through the phone having the microphone.

7. A group call server system, comprising:

a communication link to receive a group call request from an originating phone having a caller id field with information identifying the originating phone;

a call processor to remove the information identifying the originating phone from the caller id field, to place group information identifying the group call request into the caller id field

a memory lookup table to store group information together with destination phone identifiers corresponding to the respective group information, the processor also to look up a set of destination phones corresponding to the group call request and transmit via the communication link destination phone identifiers for each of the destination phones, together with the caller id field containing the group information; and

at least one destination phone to receive the group information, to compare the group information to a group identifier lookup table, and to automatically answer the phone call from the originating phone if the group information matches information from the group identifier lookup table.

8. A method of connecting a cellular phone to a call originating from an originating phone having a caller id feature, comprising the steps of:

1) storing group call identifiers in a memory at first pre-designated memory locations;

2) storing originator phone call identifiers in the memory at second pre-designated memory locations;

3) receiving a page request from the originating phone;

4) reading a caller id field of the page request;

5) comparing the contents of the caller id field with one of the first pre-designated memory locations; and

repeating this comparison with next pre-designated memory locations until the earlier of steps 6a) and 6b) occur;

6a) the caller id field is determined to match one of the first pre-designated memory locations, and the call from the originating phone is automatically answered by the cellular phone; and

6b) the caller id field is compared to all of the first pre-designated memory locations and no match is determined, and the cellular phone awaits a user input to answer the call from the originating phone.

9. A method according to claim 8, wherein step 6a) further includes the steps of:

muting a microphone associated with the cellular phone; and

aerially broadcasting the call from the originating phone through the cellular phone.

10. A method of connecting a phone call from an originating phone having an originating phone identifier to a destination phone having a destination phone identifier, the originating phone identifier being contained in a caller id field of a call request issued by the originating phone, the method comprising the steps of:

receiving the associated phone identifier at a call server;

removing the originating phone identifier from the caller id field;

writing the destination phone identifier into the caller id field;

identifying the destination phone based on the destination phone identifier in the caller id field;

issuing routing instructions from the call server to a radio switch identifying the destination phone identifier for the destination phone;

receiving the routing instructions from the call server and routing a page request including the caller id field with the destination phone identifier to the destination phone;

receiving the page request;

reading the destination phone identifier from the caller id field;

looking up the destination phone identifier in a group destination lookup table; and

if a match between the destination phone identifier from the caller id field and a destination phone identifier in the destination identifier lookup table is identified, automatically answering the phone call from the originating phone.

11. A method according to claim 10, wherein the destination phone is a cellular phone.

12. A method according to claim 10, further including the step of:

looking up the destination phone identifier in a memory lookup table.

13. A method according to claim 10, wherein the automatic answering occurs at a destination phone having a microphone, the method further including:

muting the microphone.

14. A method according to claim 13, further including:

aerially broadcasting the phone call through the destination phone having the microphone.