Abstract:
A system and method for providing calling name delivery to a voicemail service subscriber. The system and method use the features of an advanced intelligent network to provide an interface between a voicemail service and a telephone service provider&#39;s calling name databases. The present invention advantageously provides this interface using standard call processing techniques without the need to establish a direct data interface between the systems.

Description:
The application is a continuation of 09/441,464 filed Nov. 17, 1999 now U.S. Pat. No. 6,456,700. 
    
    
     BACKGROUND 
     1. Field of the Invention 
     The present invention relates generally to telecommunications systems. More particularly, the present invention relates to an advanced intelligent network that provides a system and method for delivering calling name information to a voicemail system subscriber. 
     2. Background of the Invention 
     As is well known in the art, voicemail systems (“VMS”) are generally accessed by subscribers through a telephone call. That is, a subscriber dials a telephone access number for the VMS and once the call is connected, the subscriber interacts with the VMS service to access voicemail messages. The subscriber normally inputs commands to the VMS service by pressing keys on the telephone to send dual-tone multifrequency (“DTMF”) codes. Alternatively, a VMS service may use voice-recognition systems to receive audible commands from subscribers. 
     Conventional VMS systems are generally capable of delivering the calling party number for stored messages. Thus, a subscriber may receive an announcement from the VMS service such as, “You have one new voicemail message, received from telephone number 111-222-3333.” However, voicemail systems cannot provide the calling name associated with voicemail messages unless an extensive calling name database is created and maintained. 
     Some VMS services can provide limited calling name services when a private branch exchange (“PBX”) is used to provide internal telephone systems within an organization. For example, such a private VMS service provide a name associated with a voicemail message, provided the message was left by a caller using a telephone served by the PBX. However, such a VMS service cannot provide the calling name for external callers unless a database of external calling numbers and associated names is maintained. Such calling name databases are well known in the art. However, most calling name databases are maintained by common carrier telecommunications services (“telcos”). 
     Thus a system and method is needed for providing calling name delivery service on a per call basis for subscribers of VMS services. 
     SUMMARY OF THE INVENTION 
     The present invention utilizes an Advanced Intelligent Network (“AIN”) to provide a system and method for delivering the calling name information associated with a voicemail message to a voicemail system subscriber. AIN systems are described in U.S. Pat. No. 5,701,301, U.S. Pat. No. 5,774,533, Bellcore Specification TR-NWT-001284, Switching Systems Generic Requirements for AIN 0.1 which are incorporated herein by reference in their entirety. 
     The present invention provides a system and method for interfacing a conventional VMS service with a calling name delivery service. The invention advantageously uses a standard call processing model to deliver the calling name information directly to a VMS subscriber. Thus, the present invention obviates the need for external data interfaces between the VMS service and the telco&#39;s calling name databases. Functionally, a subscriber, connected by a telephone call to a VMS service, requests the calling name information associated with a voicemail message, by issuing a command to the VMS. Such a command is sent to the VMS using DTMF or voice commands as currently known in the art. The VMS system conferences a service node (“SN”) into the telephone call by dialing a customized dialing plan (“CDP”) code and the telephone number associated with the voicemail message. A CDP trigger on the service switching point (“SSP”) serving the VMS, causes the SSP to launch a query to a service control point (“SCP”) to identify which SN to conference in on the call. The SCP directs the call to a special access number for the appropriate SN based on the telephone number associated with the voicemail message. 
     Once the SN is conferenced in with the subscriber and the VMS service, the SN immediately provides the calling name for the voicemail message and may receive subsequent commands from the subscriber. For example, the subscriber may wish to have the calling name repeated. After the subscriber is finished listening to the calling name information, the SN hangs up, leaving only the subscriber and the VMS service on the telephone call. The subscriber may continue interacting with the VMS service, and issue commands, including a request for calling name information for the same or subsequent voicemail messages. 
     The SCP acts as a gatekeeper to restrict access to the SN so that only authorized callers, i.e., authorized VMS services, can obtain calling name information through this system and method. Additionally, the SCP selects the appropriate SN to handle the call based on the telephone number associated with the voicemail message. Due to the large size of a telco&#39;s calling name database, the telco may split the database into several parts and store the individual portions of the database on several SNs. Thus, the SCP maintains an index identifying which SN maintains which portion of the database. When a query is sent by the switch to the SCP, the SCP checks this index to determine the new routing instructions for the call. The SCP responds to the query by inserting the special telephone access number for the particular SN in the called party number (“CdPN”) field and inserting the telephone number provided by the VMS service in the calling party number (“CgPN”) field. 
     The SN is programmed to answer any calls to the special telephone access number as soon as a call comes in. This minimizes any delays for the subscriber requesting the calling name information. The SN uses the CgPN to look up the calling name information in its database. Upon answering the call, the SN plays a computer generated voice response delivering the calling name information, as described above. Thus, the subscriber receives the calling name information through standard call processing techniques. In a preferred embodiment, the SN is programmed to instruct the subscriber to press a pre-determined digit if the name should be repeated, or to press a different pre-defined number to return to the VMS service. 
     It is an object of the present invention to provide a system and method for interfacing conventional voicemail services with conventional calling name databases. 
     It is a further object of the present invention to deliver calling name information to a voicemail subscriber using the existing telephone infrastructure. 
    
    
     These and other objects of the present invention are described in greater detail in the detailed description of the invention, the appended drawings and the attached claims. 
     DESCRIPTION OF THE DRAWINGS 
     FIGS. 1 a - 1   d  are block diagrams showing the interactions between a caller, a voicemail system and a service node when the caller requests and receives a calling name announcement using the present invention. 
     FIG. 2 is a schematic diagram showing the key components of an AIN used in an embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The block diagrams in FIGS. 1 a - 1   d  provide a functional description of the present invention. As shown in FIG. 1 a , caller  100  connects to a voicemail system, VMS  105 , through a telephone call, i.e., voice channel  110 . Caller  100  communicates with VMS  105  using the voice channel to issue commands to VMS  105 , e.g., play, delete, save, or replay a message. Using the system and method of the present invention, when caller  100  requests the calling name information associated with a voicemail message, VMS  105  conferences SN  120  into the telephone call via voice channel  115 , as shown in FIG. 1 b . Since voice channel  115  represents a conference call, it functionally extends voice channel  110  to a voice channel between caller  100  and SN  120 , shown schematically as voice channel  125  in FIG. 1 c.    
     When voice channel  125  is established, the telephone number associated with the voicemail message is passed on to SN  120  as described below. Thus, when SN  120  receives the telephone call, SN  120  looks up the calling name in its databases. SN  120  plays a message over voice channel  125  announcing the calling name information to caller  100 . SN  120  remains connected to caller  100  and VMS  105  until caller  100  instructs SN  120  to disconnect voice channel  115 . When voice channel  115  is disconnected, SN  120  drops out of the telephone call leaving only voice channel  110  between caller  100  and VMS  105 , as shown in FIG. 1 d . Caller  100  can continue issuing instructions to VMS  105 , including a new request for calling name information as described above. 
     FIG. 2 is a schematic diagram showing the interaction between components of the AIN used to implement an embodiment of the present invention. Caller  10  is a subscriber of VMS service provider  21 . The present invention allows caller  10  to request calling name information for any calling parties leaving messages on VMS  21  for caller  10 . In a preferred embodiment, caller  10  calls VMS  21  using telephone  11  and line  12 . As shown in FIG. 2, caller  10  may connect to VMS  21  through public switched telephone network (“PSTN”)  13 . Alternatively, a caller, such as caller  14 , may connect to VMS  21  using telephone  15  and line  16 , connected to PBX  17  as shown in FIG.  2 . In either case, the present invention provides the calling name information to the caller upon request. 
     The caller requests the calling name information as an option on VMS  21 . That is, upon listening to a voicemail message, if the caller wants to know the identity of the person leaving the message, the caller enters a code recognized by VMS  21  as a request for calling name delivery. Upon receipt of the request, VMS  21  dials the CDP code and the telephone number from which the message was received. For example, suppose a message was left for caller  10  on VMS  21  from a telephone with a calling number of 222-333-444. Suppose further that VMS  21  is programmed to instruct caller  10  to enter the code “3” to receive the calling name information. Finally, suppose the CDP code assigned by the telco for the system of the present invention is “9.” Then, if caller  10  enters “3” during or immediately after listening to the message, VMS  21  initiates a telephone call, i.e., establishes voice channel C, by dialing the following digits: 92223334444#. The first digit is the CDP code, the next ten digits are the telephone number to be analyzed, and the # is used to delimit the end of the string. 
     SSP  22  receives the dialed digits and, in response to the CDP code, sends an Info 13  Analyzed query, query  1 , to SCP  24  (via Common Channel Signaling System 7 (“SS7”) Network  23 ). Query  1  contains the string of digits received from VMS  21 . SCP  24  uses the information received to determine which SN to direct the call to. As shown in FIG. 2, the calling name database may be divided into one or more parts and housed on multiple SNs. The database master is managed by Service Management System (“SMS”) server  25  which updates the databases maintained on each SN as required. SMS  25  also provides SCP  24  with information needed to maintain an index for tracking the range of calling numbers stored on each SN. 
     Thus, in the present example, suppose SN  26  has the calling name database for all calling numbers between 000-000-0000 and 333-333-3333 and SN  27  has the calling name database for all calling numbers between 777-777-7777 and 999-999-9999. The calling name databases for numbers within other ranges would be on other SNs, not shown in FIG.  2 . In this case, SCP  24  would determine that the calling party name information is stored on SN  26 . SCP  24  issues response  2  to SSP  22  directing the telephone call to SN  26 . Response  2  comprises an Analyze_Route message having the telephone access number for SN  26  in the CdPN field and the telephone number to be looked up, i.e., “2223334444,” in the CgPN field. 
     As shown in FIG. 2, SN  26  is served by SSP  28 . Thus, SSP  22  sends call setup message  3  to SSP  28  via SS7 network  23 . SSP  28  completes the call setup in response  4  and establishes voice channel C′. As discussed above, SN  26  answers the call as soon as it arrives, thus completing voice channel C″. As discussed above, a telephone call, i.e., voice channel C-C′-C″, is established between caller  10  and SN  26 . In a preferred embodiment, caller  10  hears little or no ringing upon connection of this call. SN  26  uses the CgPN information from the call setup message to look up the calling name information. SN  26  plays a computer generated voice message over voice channel C-C′-C″ to caller  10 . The message is an audible message providing caller  10  with the calling name associated with the voicemail message left on VMS  21 . 
     In a preferred embodiment, the SN also plays a message informing caller  10  how to repeat the message or how to return to VMS  21  to retrieve more voicemail messages. 
     The foregoing disclosure of embodiments of the present invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many variations and modifications of the embodiments described herein will be obvious to one of ordinary skill in the art in light of the above disclosure. The scope of the invention is to be defined only by the claims appended hereto, and by their equivalents.