Automated call screening

• US 5,109,405 A
• Filed: 08/16/1990
• Issued: 04/28/1992
• Est. Priority Date: 07/11/1988
• Status: Expired due to Term

• Current Assignee: Aspect Communications Corporation (Alvaria Incorporated)
• Original Assignee: Dytel Corp. (Enghouse Systems Limited)
• Inventors: Morganstein, Sanford J.
• Primary Examiner(s): Dwyer, James L.
• Application Number:
  US07/568,582
• Time in Patent Office: 621 Days
• Field of Search: 379/67, 379/88, 379/89, 379/210, 379/212, 379/213, 379/214, 379/142, 379/127, 379/246, 379/247, 379/201, 379/188, 379/199, 379/200, 379/95
• US Class Current: 379/88.21
• CPC Class Codes: H04M 2242/22 Automatic class or number identification arrangements
• CPC Class Codes: H04M 3/42059 Making use of the calling party identifier
• CPC Class Codes: H04M 3/436 Arrangements for screening incoming calls , i.e. evaluating the characteristics of a call before deciding whether to answer it based on the calling party profile H04M3/42059; based on location H04M3/42348; based on presence H04M3/42365; diversion H04M3/54
• CPC Class Codes: H04M 3/527 Centralised call answering arrangements not requiring operator intervention
• CPC Class Codes: H04Q 2213/1309 Apparatus individually associated with a subscriber line, line circuits
• CPC Class Codes: H04Q 2213/13091 CLI, identification of calling line
• CPC Class Codes: H04Q 2213/13103 Memory
• CPC Class Codes: H04Q 2213/13106 Microprocessor, CPU
• CPC Class Codes: H04Q 2213/13141 Hunting for free outlet, circuit or channel
• CPC Class Codes: H04Q 2213/13194 Four wire connection, transmission
• CPC Class Codes: H04Q 2213/13204 Protocols
• CPC Class Codes: H04Q 2213/1322 PBX
• CPC Class Codes: H04Q 2213/13256 Call screening
• CPC Class Codes: H04Q 2213/13282 Call forward, follow-me, call diversion
• CPC Class Codes: H04Q 2213/13336 Store & forward, messaging systems
• CPC Class Codes: H04Q 2213/1334 Configuration within the switch
• CPC Class Codes: H04Q 2213/13353 Routing table, map memory
• CPC Class Codes: H04Q 2213/13377 Recorded announcement
• CPC Class Codes: H04Q 2213/13405 Dual frequency signaling, DTMF
• CPC Class Codes: H04Q 3/62 for connecting to private branch exchanges
• CPC Class Codes: H04Q 3/70 : Identification of class of calling subscriber
• CPC Class Codes: H04Q 3/72 : Finding out and indicating number of calling subscriber

Abstract

A method for facilitating call completions utilizing a call identification telephone number which is transmitted along with an incoming call. A user of the call processor of the invention can program a list of anticipated or preferred call identification telephone numbers, together with destinations to which it is desired to route the respective incoming calls. During an incoming call, the call processor matches the associated call identification telephone number with a preprogrammed number and thereby completes the call according to the programmed destination.

Claims

1. A method for controlling routing of a telephone call, comprising the steps of:

programming a route directory with at least one potential calling party identity to be associated with one of a plurality of destinations including an intended called party and a voice messaging facility;

receiving an incoming telephone call directed to a switching system and receiving an identity of a calling party placing the incoming call;

accessing the route directory in response to the incoming call to determine the destination route of the incoming call based upon the identity of the calling party; and

in response to said step of determining the destination route, connecting the incoming call to the voice messaging facility.

2. A method of limited access controlled routing of a telephone call, comprising the steps of:

providing a programming mode in a call processor for allowing an authorized programming user to whom a call can be directed to program the call processor to control the routing of incoming calls directed to said authorized user, comprising the substeps of;

storing at least one authorization security code in a look-up table;

prompting a programming user to input a code;

comparing said code input by said programming user with said authorization codes in said look-up table;

responsive to said step of comparing, when said code input by said programming user corresponds to a said authorization code in said look-up table, authorizing said programming user to program said call processor; and

providing a program within said call processor for allowing said authorized programming user to enter calling party identifying indicia and a call route destination associated with each said identifying indicia, the call route destination selected from a plurality of destinations including said programming user and a voice messaging facility.

3. The method of claim 2, and further comprising the substep of disconnecting said programming user when said code input by said corresponding user and said authorization security code do not correspond.

4. A call processor for controlling routing of a telephone call, comprising:

a receiver adapted to receive a call identification number identifying a calling party, said identification number being received in a format selected from a group including digital and DTMF formats;

a memory for storing the call identification number;

a look-up table programmable by a user of the call processor for listing indicia for identifying calling parties and for cross-referencing a destination to said indicia, said destination selected from a plurality of destinations including the user and a voice messaging facility;

a comparator for comparing a call identification number received in association with an incoming call to said call processor with entries in said look-up table; and

call route directing apparatus for connecting the incoming call to the destination cross-referenced in said look-up table on an affirmative comparison of the call identification number via said calling party identifying indicia.

5. The call processor of claim 4, wherein said receiver is operable to digitize a respective said identification number when received in DTMF format.

6. The call processor of claim 4, wherein said receiver comprises:

a first receiver unit for receiving call identification numbers in digital format; and

a second receiver unit for receiving call identification numbers in DTMF format.

7. The call processor of claim 6, wherein said second receiver unit is adapted to digitize said call identification numbers received in DTMF format.

8. The call processor of claim 7, wherein said second receiver unit includes a general purpose multifrequency receiver.