US 7,657,005 B2Grant
System and method for identifying telephone callers
Issue Date:2010-02-02
•21 Claims
•4 Drawing Sheets
Abstract
A method of processing calls received at an interactive voice response (IVR) server is provided and includes receiving a telephone call at the IVR. Caller identity data that is associated with the telephone call is received and a customer profile that includes a list of individual names associated with the caller identity data is received. Each of the individual names is mapped to a speech recognition grammar pattern. Further, a caller of the telephone call is prompted to speak their name. A spoken name from the caller is received and recorded. Moreover, the spoken name is converted into a speech recognition grammar pattern. Thereafter, the speech recognition grammar pattern associated with the spoken name is compared to each of the speech recognition grammar patterns associated with the individual names retrieved from the customer profile.
Metadata
Assignee
- AT&T Intellectual Property I, L.P.
Inventor
- Hisao M. Chang
Application Information
Application Number:US 10/979,784
Filing Date:2004-11-02
Priority Date:2004-11-02
Art Unit:2614
Classifications
IPC:
H04M1/64
Patent Drawings (4 sheets)
Description
Field of the Disclosure
[0001] The present disclosure relates generally to call center systems.
Background
[0002] Telephone service providers of the public switched telephone network (PSTN) have been offering caller identification services that utilize the signaling system seven (SS7) protocol for many years. Since the early 1980's, various interactive voice response (IVR) technologies have been developed to use the caller identification function provided by SS7 to determine the originating line from which a telephone call was made. However, caller identification services only provide the telephone number from which the telephone call was initiated and the name(s) associated with the telephone number if the subscriber allows the telephone phone number to be listed. In order to determine who is calling, an IVR system or human customer service agent, must ask the caller to identify himself or herself.
[0003] Accordingly, there is a need for an improved system and method for identifying telephone callers.
Brief Description of the Drawings
[0004] The present invention is pointed out with particularity in the appended claims. However, other features are described in the following detailed description in conjunction with the accompanying drawings in which:
[0005] FIG. 1 is a general diagram of a telephone system;
[0006] FIG. 2 is a flow chart to illustrate a method for identifying telephone callers; and
[0007] FIG. 3 is a general diagram of a computer.
Detailed Description of the Drawings
[0008] A method of processing calls received at an interactive voice response (IVR) server is provided and includes receiving a telephone call at the IVR. Caller identity data that is associated with the telephone call is received and a customer profile that includes a list of individual names associated with the caller identity data is received. Each of the individual names is mapped to a speech recognition grammar pattern. Further, a caller of the telephone call is prompted to speak their name. A spoken name from the caller is received and recorded. Moreover, the spoken name is converted into a speech recognition grammar pattern. Thereafter, the speech recognition grammar pattern associated with the spoken name is compared to each of the speech recognition grammar patterns associated with the individual names retrieved from the customer profile.
[0009] In a particular embodiment, the caller identity data includes a telephone number. Also, in a particular embodiment, a caller name is identified based on a result of comparing the speech recognition grammar associated with the spoken name with each of the speech recognition grammar patterns associated with the individual names retrieved from the customer profile. Moreover, a title for the caller is determined based on the spoken name. In a particular embodiment, the title is determined based on a pitch of a voice of the caller and the pitch is derived from a recorded spoken name.
[0010] In still another particular embodiment, the method includes determining whether the probability that the title and the caller name are correct is above a predetermined threshold. The telephone call can be forwarded to a service agent terminal via a whisper transfer when the probability is below the predetermined threshold. In a particular embodiment, a name field can be automatically populated at a graphical user interface of an agent terminal with the caller name. Also, a title field can be automatically populated at the graphical user interface with the title of the caller. Additionally, the telephone call can be forwarded to a live customer service agent when the probability is above the predetermined threshold.
[0011] In another embodiment, a method of processing calls that are received at an interactive voice response (IVR) server is provided. Initially, a telephone call is received at the IVR and a caller is prompted to speak their name. Further, a spoken name is received from the caller. Based on the spoken name from the caller, a name of the caller is identified. Also, a title associated with the caller is determined.
[0012] In yet another embodiment, a system for identifying a telephone caller is provided. The system includes an interactive voice response server that includes a processor. A memory is accessible to the processor and a computer program is embedded within the memory. The computer program includes instructions to identify a name associated with a telephone caller in response to analyzing a recorded spoken name from the telephone caller. Additionally, the computer program includes instructions to determining a title associated with the caller based on the spoken name.
[0013] In still another embodiment, a graphical user interface of a customer service agent computer is provided. The graphical user interface includes a title field and the title field is automatically populated with a title of a telephone caller when a call is received at an interactive voice response server that is coupled to the customer service agent computer and forwarded to a customer service agent.
[0014] Referring initially to FIG. 1 , a telecommunications system is shown and is generally designated 100. As shown, the system 100 includes a telecommunications network 102. In a particular embodiment, the telecommunications network 102 is a public switched telephone network. In another embodiment, the telecommunications network 102 is a voice over Internet protocol (VoIP) network. As illustrated in FIG. 1 , a first telephone 104 and a second telephone 106 are coupled to the telecommunications network 102. FIG. 1 also depicts a caller identification system 108 coupled to the telecommunications network 102. The first telephone 104 and the second telephone 106 are for illustrative purposes and many more telephones can be coupled, or otherwise connected, to the telecommunications network 102.
[0015] In a particular embodiment, as indicated in FIG. 1 , the caller identification system 108 includes an interactive voice response (IVR) server 110. The IVR server 110 includes a memory device 112 and a processor 114 coupled to the memory device 112. In an illustrative embodiment, the IVR server 110 also includes an automatic caller identification module 116 that is embedded within the memory device 112. In a particular embodiment, the automatic caller identification module 116 can retrieve caller identification information related to calls received at the IVR server 110. FIG. 1 further depicts an automatic speech recognition module 118 that is embedded within the memory device 112 in the IVR server 110. The automatic speech recognition module 118 can be used to determine a caller's name and gender after a call is received at the IVR and after the caller is prompted to speak his or her name.
[0016] Still referring to FIG. 1 , a first-name and gender matching database 120 is coupled to the IVR 110. In a particular embodiment, the first-name and gender matching database 120 includes information that can be used by the automatic speech recognition module 118 for determining the gender of a caller, e.g., based on the first name of the caller or the pitch of the caller's voice. FIG. 1 also shows a customer service database 122 that is coupled to the IVR 110. Particularly, the customer service database 122 can include customer information such as, account information, customer address information, etc.
[0017] As depicted in FIG. 1 , a computer 124 can be coupled to the caller identification system 108. In a particular embodiment, the computer 124 can be a customer service agent computer or a customer service agent terminal. Further, in a particular embodiment, many more computers 124 can be coupled to the caller identification system 108 than the single computer 124 illustrated in FIG. 1 .
[0018] Referring now to FIG. 2 , a flow chart to illustrate a method for identifying telephone callers is shown and commences at block 200. At block 200, an incoming telephone call is received. At decision step 202, a determination is made as to whether caller identification information is delivered with the incoming telephone call. If caller identification information is not delivered with the incoming telephone call, the method moves to block 204 and the caller is prompted to speak an identification number. In a particular embodiment, the identification number can be a telephone number, an account number, a social security number, or any other number linked to a customer's account for identification purposes. From block 204, the method can move to block 208.
[0019] Returning to decision step 202, if the caller identification information is delivered, the method continues to decision step 206. At decision step 206, a determination is made as to whether the present call is about the telephone number identified in the caller identification information. For example, the present call can be a service call concerning the identified telephone number and the present call can be made from the telephone or location associated with the identified telephone number. If the present call is not about the identified telephone number, the method continues to block 204 and the caller is prompted to speak an identification number. Next, at block 208, the caller's voice is recorded. The method can then proceed to block 210.
[0020] Returning to decision step 206, if the call is about the identified telephone number, the method moves to block 210. At block 210, a customer record associated with the identified telephone number is retrieved. In a particular embodiment, the customer record can be retrieved from the customer service database 122 (FIG. 1 ). Moving to block 212, a speaker-independent name recognition grammar is dynamically created. In a particular embodiment, the name recognition grammar is a phonetic spelling of the user's name. Next, at block 214, the caller is prompted to identify himself or herself. Further, at block 216, the caller's voice is recorded while he or she is identifying himself or herself.
[0021] Continuing to block 218, automatic speech recognition is performed on the recorded voice. In a particular embodiment, the automatic speech recognition is performed in the automatic speech recognition module 118 within the IVR server 110. Further, in a particular embodiment, the automatic speech recognition module 118 measures the pitch of the speaker's voice in order to determine the gender of the speaker. Additionally, the automatic speech recognition module 118 attempts to recognize the spoken name by comparing the dynamically created name grammar to a table of names. In a particular embodiment, the table of names can be a comprehensive table of names. In another particular embodiment, the table of names corresponds to the names associated with a particular account, e.g., a husband name and a wife name. In a particular embodiment, the table of names can be a comprehensive table of names. In another particular embodiment, the table of names corresponds to the names associated with a particular account, e.g., a husband name and a wife name.
[0022] Moving to decision step 220, a decision is made in order to determine whether the automatic speech recognition is performed successfully, i.e., whether the automatic speech recognition module recognizes the name spoken. If the automatic speech recognition is not performed successfully, the method moves to block 222 and the name recording is forwarded to a customer service agent via a “whisper transfer” so that the customer service agent can hear the name recording and greet the caller using the recorded name. In a particular embodiment, during the “whisper transfer,” the caller is placed in hold and the IVR connects to an available customer service agent. Then, the recorded name is played to the customer service agent before the call is transferred to the customer service agent. The customer service agent can listen to the recorded name and compare it to a name in a name field, if present, to determine the appropriate greeting for the caller. The method then ends at state 224.
[0023] At decision step 220, if the automatic speech recognition is performed successfully, the method proceeds to block 226 and the caller's name and title is determined. In a particular embodiment, the spelling of the caller's name can be determined. Particularly, the name and title can be determined by comparing the text string corresponding to the recorded name, e.g., the dynamically created recognition grammar, to a list of names. Further, to determine a caller's title, a gender table including common first names is used to determine if a name recognized by the automatic speech recognition module is most likely associated with a male or female caller. If a match is found, the title information obtained from the gender table is assigned to the name. If an initial match is not found, pitch characteristics of the voice recording are used to attempt to determine the gender of the caller.
[0024] Moving to decision step 228, a decision is made in order to determine whether the gender determination is accurate within a predetermine probability. If not, the method continues to block 222 and the telephone call is transferred to a customer service agent using a “whisper transfer.” The customer service agent can compare the voice recording to the text of the name that appears in a GUI. The customer service agent can decide the gender of the caller and greet the caller appropriately. If the gender determination is deemed to be accurate above a certain probability, the method proceeds to block 230 and a name field and a title field in a GUI are automatically populated with the caller's name and title. Further, an address field, an account number field, and an account type field can be automatically populated. Moving to block 232, the telephone call is forwarded to a live agent. Then, the method ends at state 224.
[0025] Referring now to FIG. 3 , a computer configured to support a customer service agent is shown and is generally designated 300. As illustrated in FIG. 3 , a GUI 302 can be displayed at the computer 300. In a particular embodiment, the GUI 302 can include a title field 304, a name field 306, an address field 308, an account number field 310, and an account type field 312. In a particular embodiment, the title field 304 and the name field 306 can be automatically populated, as described herein, in order to present a caller's name and title to a customer service agent using the computer 300. The remaining fields 308, 310, 312 can be populated with information retrieved from the customer service database 122.
[0026] With the configuration of structure described herein, the system and method provides a way for a customer service agent to appropriately greet a caller who is calling regarding a particular telephone number. The telephone call may concern account information, repair information, and/or the addition of services to an account. Further, the system and method automates the task of asking a caller his or her name, eliminates the need for the customer agent to ask who is calling, and reduces the time that a customer agent service must spend on the phone with callers. Additionally, the system and method can provide improved accuracy for determining a user's name and gender.
[0027] For many types of services, e.g., local telephone service, long distance telephone services, Internet-based services, multiple users may initiate a customer service call at different times for the same account. In this type of scenario, the system and method described herein can determine who among the users associated with an account is calling and greet the caller appropriately.
[0028] The above-disclosed subject matter is to be considered illustrative, and not restrictive, and the appended claims are intended to cover all such modifications, enhancements, and other embodiments, which fall within the true spirit and scope of the present invention. Thus, to the maximum extent allowed by law, the scope of the present invention is to be determined by the broadest permissible interpretation of the following claims and their equivalents, and shall not be restricted or limited by the foregoing detailed description.
Claims
What is claimed is:
1. A method of processing calls received at an interactive voice response (IVR) server, the method comprising:
receiving a telephone call at the IVR server;
receiving caller identity data associated with the telephone call and receiving a text list of names of individuals associated with the caller identity data;
dynamically creating multiple name recognition grammar patterns by generating a phonetic spelling of each name in the text list of names of individuals associated with the caller identity data;
prompting a caller of the telephone call to speak a name associated with the caller;
receiving and recording a spoken name from the caller;
converting the spoken name into a speech recognition grammar pattern;
selectively comparing the speech recognition grammar pattern associated with the spoken name to the multiple name recognition grammar patterns;
determining a text string from the text list of names of individuals associated with the caller identity data corresponding to a name recognition grammar pattern that matches the speech recognition grammar pattern;
comparing the text string to entries in a table to determine a gender of the caller, the table including a plurality of first names and an associated indication that a particular first name indicates the caller is one of a male caller and a female caller;
assigning a title to the caller based on the gender of the caller when the text string matches an entry in the table; and
forwarding the telephone call and the title to a service agent terminal.
2. The method of claim 1, wherein the caller identity data includes a telephone number.
3. The method of claim 1, further comprising:
identifying a caller name at least partially based on a result of the selective comparison.
4. The method of claim 3, further comprising determining whether a probability that the title and the caller name are correct is above a predetermined threshold.
5. The method of claim 4, further comprising populating a name field at a graphical user interface of the service agent terminal with the caller name when the probability that the title and the caller name are correct is above the predetermined threshold.
6. The method of claim 5, further comprising populating a title field at the graphical user interface with the title of the caller.
7. The method of claim 5, further comprising forwarding the telephone call to a live customer service agent.
8. A method of processing calls received at an interactive voice response (IVR) server, the method comprising:
receiving a telephone call at the IVR server;
prompting a caller to speak a name associated with the caller;
receiving and recording a spoken name from the caller;
converting the spoken name into a speech recognition grammar pattern;
identifying a name of the caller based on a comparison between the speech recognition grammar pattern and at least one name recognition grammar pattern that is dynamically created by generating a phonetic spelling of a name in a text list of names of individuals associated with a telephone number from which the telephone call was initiated, the text list obtained from a customer service database;
determining a text string associated with the name of the caller from the text list;
comparing the text string to entries in a table to determine a gender of the caller, the table including a plurality of first names and an associated indication that a particular first name indicates the caller is one of a male caller and a female caller;
assigning a title to the caller based on the gender of the caller when the text string matches an entry in the table and displaying the title and the name of the caller on a service agent terminal; and
forwarding the telephone call, the name, and the title to the service agent terminal via a whisper transfer when a probability that the caller name is correct is determined to be below a predetermined threshold.
9. The method of claim 8, wherein the text string corresponds to a spelling of the name associated with the caller.
10. The method of claim 9, further comprising forwarding the telephone call to a customer service agent computer when the caller name is likely to be correct.
11. The method of claim 10, further comprising populating a name field at a graphical user interface displayed at the customer service agent computer with the identified name of the caller.
12. The method of claim 10, further comprising populating a title field at a graphical user interface displayed at the customer service agent computer with the title.
13. A system for identifying a telephone caller, the system comprising:
an interactive voice response server including a processor;
a memory accessible to the processor; and
a computer program embedded within the memory, the computer program comprising:
instructions to identify a name associated with a telephone caller by:
converting a recorded spoken name from the telephone caller into a speech recognition grammar pattern; and
comparing the speech recognition grammar paftem to at least one name recognition grammar pattern that is dynamically created by generating a phonetic spelling of a name in a text list of names of individuals associated with a telephone number that initiated a received call, the text list obtained from a customer service database;
instructions to determine a title associated with the telephone caller by:
determining a text string associated with the name associated with the telephone caller from the text list;
comparing the text string to entries in a table to determine a gender of the telephone caller, the table including a plurality of first names and an associated indication that a particular first name indicates the caller is one of a male caller and a female caller; and
assigning the title to the telephone caller based on the gender of the telephone caller when the text string matches an entry in the table; and
instructions to forward the title and a telephone call associated with the telephone caller to a service agent terminal.
14. The system of claim 13, wherein the text string corresponds to a spelling of the name associated with the telephone caller.
15. The system of claim 14, further comprising a customer service agent computer coupled to the interactive voice response server.
16. The system of claim 13, wherein the computer program further comprises instructions to forward the telephone call to a customer service agent computer.
17. The system of claim 16, wherein the computer program further comprises instructions to automatically populate a name field at a graphical user interface displayed at the customer service agent computer with the name associated with the telephone caller, when a probability that the title and the name associated with the telephone caller are correct is above a predetermined threshold.
18. The system of claim 17, wherein the computer program further comprises instructions to automatically populate a title field of a graphical user interface displayed at the customer service agent computer with the title.
19. The method of claim 1, further comprising determining a title of the caller at least partially based on a pitch of a voice of the caller when the text string does not match any entry in the table, wherein the pitch is derived from a recording of the spoken name.
20. The method of claim 8, further comprising determining a title of the caller at least partially based on a pitch of a voice of the caller when the text string does not match any entry in the table, wherein the pitch is derived from a recording of the spoken name.
21. The system of claim 13, wherein the instructions further comprise instructions to determine the title associated with the telephone caller at least partially based on a pitch of a voice of the telephone caller when the text string does not match any entry in the table, wherein the pitch is derived from the recorded spoken name.
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