Communication network with hidden calling number capability

• US 5,832,072 A
• Filed: 11/27/1996
• Issued: 11/03/1998
• Est. Priority Date: 11/27/1996
• Status: Expired due to Term

• Current Assignee: George Washington University
• Original Assignee: Bell Communications Research, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Rozenblit, Moshe
• Primary Examiner(s): Wolinsky, Scott
• Application Number:
  US08/757,560
• Time in Patent Office: 706 Days
• Field of Search: 379/201, 379/142, 379/127, 379/196, 379/197, 379/198, 379/222, 379/223, 379/215, 379/245, 379/246, 379/247
• US Class Current: 379/246
• CPC Class Codes: H04M 1/571 Blocking transmission of caller identification to called party
• CPC Class Codes: H04Q 11/0435 Details
• CPC Class Codes: H04Q 2213/13091 CLI, identification of calling line
• CPC Class Codes: H04Q 2213/13095 PIN / Access code, authentication
• CPC Class Codes: H04Q 2213/13097 Numbering, addressing
• CPC Class Codes: H04Q 2213/13176 Common channel signaling, CCS7
• CPC Class Codes: H04Q 2213/13209 ISDN
• CPC Class Codes: H04Q 2213/13256 Call screening
• CPC Class Codes: H04Q 2213/1328 Call transfer, e.g. in PBX
• CPC Class Codes: H04Q 2213/13405 Dual frequency signaling, DTMF
• CPC Class Codes: H04Q 3/72 Finding out and indicating number of calling subscriber

Abstract

A method and apparatus are disclosed for delivering calling line information in a manner which preserves the privacy interests of the caller while providing useful information to the called party. The caller initiates a call from a caller terminal of a communication network. A destination central office or other network element receives the call along with a complete calling line number and delivers partial calling line information to the called party prior to connecting the call. The partial calling line information may include an NPA-NXX portion of an NPA-NXX-XXXX calling line number, geographical information such as state, county, city, township and zip code associated with the calling line, and/or an indication as to whether the call is from a residence, business, pay phone, cellular phone or other particular source such as a hospital or hotel. The central office or other network element may store the full calling line number in an incoming call log maintained for the called party, and a name selected by the called party may be associated with the calling line number. The central office will then deliver the selected name as part of the partial calling information when subsequent calls are placed from the calling line to the called party. This allows the called party to perform selective screening, call transfer and other functions without ever learning the full calling line number. The called party can also direct the central office to utilize the full calling line number stored therein to initiate a return call to the corresponding calling line.

Claims

1. A method of processing calls in a communication network, the method comprising the steps of:

receiving in a network element a call initiated by a caller over a calling line to a called party;

delivering partial calling line information to the called party prior to connecting the call, partial line information including only a first portion of a calling line number corresponding to the calling line, such that a second portion of the calling line number is hidden from the called party; and

storing the full calling line number associated with the calling line in an incoming call log maintained for the called party.

2. The method of claim 1 further including the step of storing the full calling line number with a name selected by the called party.

3. The method of claim 2 further including the step of supplying the name selected by the called party to the called party as part of the partial calling line information for a subsequent call initiated over the calling line to the called party.

4. The method of claim 1 further including the step of using the stored calling line number to initiate a return call to the calling line in response to a subsequent request from the called party.

5. An apparatus for processing calls in a communication network, the apparatus comprising:

a memory for storing calling line numbers; and

a processor coupled to the memory and operative to receive a call initiated by a caller over a given calling line to a called party, and for delivering partial calling line information to the called party prior to connecting the call, the partial calling line information including only a first portion of a calling line number corresponding to the given calling line, such that a second portion of the calling line number is hidden from the called party;

wherein the memory stores the full calling line number associated with the calling line in an incoming call log maintained for the called party.

6. The apparatus of claim 5 wherein the memory stores the full calling line number with a name selected by the called party.

7. The apparatus of claim 6 wherein the processor is operative to supply the name selected by the called party to the called party as part of the partial calling line information for a subsequent call initiated over the calling line to the called party.

8. The apparatus of claim 5 wherein the processor is further operative to utilize the stored calling line number to initiate a return call to the calling line in response to a request from the called party.

9. A method of processing calls in a communication network, the method comprising the steps of:

receiving in a network element a call initiated by a caller over a calling line to a called party; and

delivering to the called party prior to connecting the call only a first portion of the calling line number corresponding to the calling line and delivering, in place of a second portion of the calling line number, a generalized indication of the nature of the calling line.

10. The method of claim 9 wherein said generalized indication identifies the calling line as an OUTWATTS line.

11. The method of claim 9 wherein said generalized indication identifies the calling line as a pay phone line.

12. The method of claim 9 wherein said generalized indication identifies the calling line as a cellular telephone line.

13. A method of processing calls in a communication network, the method comprising the steps of:

delivering a full calling line number as well as other partial calling line information to destination called parties of a first group of callers, wherein the first group of callers have not requested privacy; and

delivering only the partial calling line information to destination called parties of a second group of callers that have requested privacy.

14. The method of claim 13 wherein the full calling line number is of the form NPA-NXX-XXXX and the step of delivering only the partial calling line information to the destination called parties includes delivering the NPA-NXX portion such that the XXXX portion remains hidden from the destination called parties.

15. The method of claim 13 wherein the partial calling line information delivered to the destination called parties further includes an indication of a characteristic of the calling line.