CA2050377C - Method of voice mail notification for cellular telephone systems - Google Patents
Method of voice mail notification for cellular telephone systemsInfo
- Publication number
- CA2050377C CA2050377C CA002050377A CA2050377A CA2050377C CA 2050377 C CA2050377 C CA 2050377C CA 002050377 A CA002050377 A CA 002050377A CA 2050377 A CA2050377 A CA 2050377A CA 2050377 C CA2050377 C CA 2050377C
- Authority
- CA
- Canada
- Prior art keywords
- voice mail
- subscriber
- notification
- voice
- call
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
- H04M3/53—Centralised arrangements for recording incoming messages, i.e. mailbox systems
- H04M3/537—Arrangements for indicating the presence of a recorded message, whereby the presence information might include a preview or summary of the message
Abstract
A voice mail notification arrangement provides an audible notification to a mobile radiotelephone subscriber that one or more of incoming calls have been redirected to the subscribers mailbox.
An unanswered incoming call is directed to the voice mail system which stores the calling party's voice message. A flag is set in a feature data base which includes this feature for the called subscriber. When the subscriber subsequently originates a call from their cellular mobile radiotelephone, or answers any incoming call, an audible notification (e.g., a burst of special tone) is provided, via the speaker of the mobile radiotelephone handset, to alert the subscriber at the outset of an active call that there are one or more voice messages in his/her voice mailbox. The flag is cleared when the voice messages are retrieved or upon the first call originated by the mobile subscriber, depending upon the mode of operation active in the subscriber's system.
An unanswered incoming call is directed to the voice mail system which stores the calling party's voice message. A flag is set in a feature data base which includes this feature for the called subscriber. When the subscriber subsequently originates a call from their cellular mobile radiotelephone, or answers any incoming call, an audible notification (e.g., a burst of special tone) is provided, via the speaker of the mobile radiotelephone handset, to alert the subscriber at the outset of an active call that there are one or more voice messages in his/her voice mailbox. The flag is cleared when the voice messages are retrieved or upon the first call originated by the mobile subscriber, depending upon the mode of operation active in the subscriber's system.
Description
~05~377 METHOD OF VOICE MAIL NOTIFICATION
FOR CELLULAR TELEPHONE SYSTEMS
Field of the Invention This invention relates to cellular mobile radio telephone systems and in 5 particular to a method of providing notification to a mobile radiotelephone subscriber of waiting voice mail messages.
Back~round of the Invention Voice mail is a feature of modern telephone systems that allows a calling party to leave a mess~ge for subsequent retrieval by a called party. It is 10 normally subsequently retrieved by the called party (i.e.the intended recipient) by issuance of a comm~n(l or series of comm~n-l~ to the telephone system that has stored the mess~ge for such later retrieval. The voice mail feature is most often used when the called party does not answer the incoming call and ehe incoming messageis automatically redirected to the subscriber's voice mailbox.
The voice mail process involves the storage of a recorded voice message on storage e4uiplllent associated with the telephone switching network. The called party retrieves the message at a subsequent time when he/she issues a command orseries of comm~n~l~ through his/her subscriber set to the storage equipment of the telephone network. In conventional land switched telephone networks, the called 20 party is notified by a message waiting lamp (e.g.visual inciic~tor light) included with the subscriber telephone set. Different notification techniques are provided with differing subscriber e~luiplllent.
Cellular mobile radiotelephones are connected, via radio, to the land public telephone network and hence voice mail mt~ssages may be directed to storage 25 e4uipl-le[lt associated with a mobile radiotelephone system. However a message waiting lamp is not presently available on collllllel~ially available mobile radiotelephones. The mobile subscriber must be notified of this voice mail message so that action may be taken to receive it, by having the stored message read outthrough his/her mobile radiotelephone.
30 Summary of the Invention A voice mail notification arrangement, embodying the principles of the invention, provides an audible notification to a mobile radiotelephone subscriber that one or more of incoming calls have been redirected to the subscriber's mailbox.
In one particular embodiment an unanswered incoming call is directed 35 to the voice mail system which stores the calling party's voice m~ssage A flag is set in a feature data base which includes this option for the called subscriber. When the subscriber subsequently originates or answers any incoming call an audible notification (e.g. a burst of special tone) is provided to alert the subscriber at the outset of an active call that there are one or more newly received voice messages in his/her mailbox. The flag is cleared when the new voice messages are retrieved.
In accordance with one aspect of the invention there is provided a method of notifying users of mobile radiotelephones in a cellular telephone system of existing voice mail addressed to them, comprising the steps of: storing an incoming message in a message recording medium; initiating a notification process in response to the incoming message by setting a flag in a data base describing the features that the user has subscribed to; and responding to the set flag upon the occurrence of a subsequent call involving the user's mobile radiotelephone to issue an audible notification of a voice message existing in a voice mailbox of the user.
Brief Description of the Drawin~
In the drawing:
FIG. 1 is a schematic diagram of a cellular mobile telephone architecture; and FIG. 2 is a flowchart of operation of the voice mail notification system according to the invention.
Detailed Description A typical cellular mobile telephone system is shown schematically in FIG. 1. The overall system includes a message processing system 100 which is controlled by a central cellular processor 101 (ECP) which controls operation of a cellular telephone system. In the system disclosed herein this ECP 101 is connected via a ring peripheral conkoller node (RPC) 102 to an interprocessor message switch (IMS) 103. The IMS 103 is a token ring in which messages from any processor connected to the ring can be kansmitted to any other processor connected to the ring. RPC 102 is a ring node which provides an interface - between the ECP 101 and the IMS ring 103. Token rings and its associated interface technology are well known in the art and it is not believed necessary to disclose its details herein.
Included within the message processing system and connected to the processing ring are a plurality of cell site nodes 106, 107 (CSN), a plurality of call ': ~.
- 2a- 2050377 processing/data base nodes 108, 109 (CDN) and a plurality of digital switch nodes 1 11, 1 12 (DSN3. The DSNs 1 1 1, 112 are link nodes to interconnect the IMS ring 103 to the digital cellular switches 113, 114 (DCS). The DCSs 113, 114 are connected in turn, via a trunk line, to the public switched telephone network 120 5 (PSTN) which is the land telephone network that provides public telephone service.
Each of the DCSs 113, 114 may be connected to a voice mail system 121,122 (VMS). Each VMS 121,122 is essentially a computer system attached, via a trunk, to the telephone switching system 120, via the DCS 113 and 114. A VMS
functions as a central answering machine for telephone subscribers. Each 10 subscriber who has subscribed to this answering service is assigned a "mailbox" on the disk of the VMS into which messages are entered by callers when the called subscriber does not answer. These messages may be retrieved by the subscriber ata subsequent time~ Since voice message system equipment and operation are well known by those skilled in the art A
20S(~37~
FOR CELLULAR TELEPHONE SYSTEMS
Field of the Invention This invention relates to cellular mobile radio telephone systems and in 5 particular to a method of providing notification to a mobile radiotelephone subscriber of waiting voice mail messages.
Back~round of the Invention Voice mail is a feature of modern telephone systems that allows a calling party to leave a mess~ge for subsequent retrieval by a called party. It is 10 normally subsequently retrieved by the called party (i.e.the intended recipient) by issuance of a comm~n(l or series of comm~n-l~ to the telephone system that has stored the mess~ge for such later retrieval. The voice mail feature is most often used when the called party does not answer the incoming call and ehe incoming messageis automatically redirected to the subscriber's voice mailbox.
The voice mail process involves the storage of a recorded voice message on storage e4uiplllent associated with the telephone switching network. The called party retrieves the message at a subsequent time when he/she issues a command orseries of comm~n~l~ through his/her subscriber set to the storage equipment of the telephone network. In conventional land switched telephone networks, the called 20 party is notified by a message waiting lamp (e.g.visual inciic~tor light) included with the subscriber telephone set. Different notification techniques are provided with differing subscriber e~luiplllent.
Cellular mobile radiotelephones are connected, via radio, to the land public telephone network and hence voice mail mt~ssages may be directed to storage 25 e4uipl-le[lt associated with a mobile radiotelephone system. However a message waiting lamp is not presently available on collllllel~ially available mobile radiotelephones. The mobile subscriber must be notified of this voice mail message so that action may be taken to receive it, by having the stored message read outthrough his/her mobile radiotelephone.
30 Summary of the Invention A voice mail notification arrangement, embodying the principles of the invention, provides an audible notification to a mobile radiotelephone subscriber that one or more of incoming calls have been redirected to the subscriber's mailbox.
In one particular embodiment an unanswered incoming call is directed 35 to the voice mail system which stores the calling party's voice m~ssage A flag is set in a feature data base which includes this option for the called subscriber. When the subscriber subsequently originates or answers any incoming call an audible notification (e.g. a burst of special tone) is provided to alert the subscriber at the outset of an active call that there are one or more newly received voice messages in his/her mailbox. The flag is cleared when the new voice messages are retrieved.
In accordance with one aspect of the invention there is provided a method of notifying users of mobile radiotelephones in a cellular telephone system of existing voice mail addressed to them, comprising the steps of: storing an incoming message in a message recording medium; initiating a notification process in response to the incoming message by setting a flag in a data base describing the features that the user has subscribed to; and responding to the set flag upon the occurrence of a subsequent call involving the user's mobile radiotelephone to issue an audible notification of a voice message existing in a voice mailbox of the user.
Brief Description of the Drawin~
In the drawing:
FIG. 1 is a schematic diagram of a cellular mobile telephone architecture; and FIG. 2 is a flowchart of operation of the voice mail notification system according to the invention.
Detailed Description A typical cellular mobile telephone system is shown schematically in FIG. 1. The overall system includes a message processing system 100 which is controlled by a central cellular processor 101 (ECP) which controls operation of a cellular telephone system. In the system disclosed herein this ECP 101 is connected via a ring peripheral conkoller node (RPC) 102 to an interprocessor message switch (IMS) 103. The IMS 103 is a token ring in which messages from any processor connected to the ring can be kansmitted to any other processor connected to the ring. RPC 102 is a ring node which provides an interface - between the ECP 101 and the IMS ring 103. Token rings and its associated interface technology are well known in the art and it is not believed necessary to disclose its details herein.
Included within the message processing system and connected to the processing ring are a plurality of cell site nodes 106, 107 (CSN), a plurality of call ': ~.
- 2a- 2050377 processing/data base nodes 108, 109 (CDN) and a plurality of digital switch nodes 1 11, 1 12 (DSN3. The DSNs 1 1 1, 112 are link nodes to interconnect the IMS ring 103 to the digital cellular switches 113, 114 (DCS). The DCSs 113, 114 are connected in turn, via a trunk line, to the public switched telephone network 120 5 (PSTN) which is the land telephone network that provides public telephone service.
Each of the DCSs 113, 114 may be connected to a voice mail system 121,122 (VMS). Each VMS 121,122 is essentially a computer system attached, via a trunk, to the telephone switching system 120, via the DCS 113 and 114. A VMS
functions as a central answering machine for telephone subscribers. Each 10 subscriber who has subscribed to this answering service is assigned a "mailbox" on the disk of the VMS into which messages are entered by callers when the called subscriber does not answer. These messages may be retrieved by the subscriber ata subsequent time~ Since voice message system equipment and operation are well known by those skilled in the art A
20S(~37~
it is not believed necessary to disclose them in detail.
A plurality of cell sites 131, 132 for co,- ." ,u~ ting with mobile radiotelephones within a cell are shown interconnected to the IMS ring via the CSNs 106, 107. These cell site nodes 106,107 are link nodes which provide an interface 5 between the IMS ring and the cell sites 131, 132. The cell itself is a geographical area, idealistically often depicted as a hexagon shaped area, which is served by cell site equipllle-lt to provide mobile radiotelephone service. Use of the cell design~tion and its technical r~mific~tions are well known in the art and it is not believednecessary to disclose the cell and its equipment in detail.
Each cell includes a cell site 131, 132 which is an in~t~ tion within the cell including the equipment necessary to set up and complete calls between the cell site and mobile radiotelephones 133. The e4uipme.ll includes tr:lnsmitting and receiving antennas shown illustratively by the antenna 134 shown tr~n~mitting and receiving signals to and from the mobile radiotelephone 133.
DCS 114 is shown connected, via a voice trunk connection 117 to each cell sites 131,132. This connection facilitates delivery of stored voice mail from the VMS systems 121, 122 to the cell site e l~liplllent at the cell sites 131, 132.
An ;~rlmini~trative call processing/database node 118 (ACDN) is connected to the IMS ring 103 and is operative for assigning calls to the CDNs 108, 20 109 for processing. An intersystem cellular node 119 (ICN) is provided as a link node to provide comm~lnicatiQns protocol between different Cellular telephone systems.
The foregoing cellular system is illustrative of cellular telephone systems to which the principles of the invention may be applied. It is not intended to 25 be limiting of cellular systems to which the principles of the invention may be applied.
A flowchart of the system operations in implementing the voice mail notification system is shown in FIG. 2. The process begins when a called party, having voice mess~ge recording service, does not answer an incoming call. The 30 incoming message is directed, by the instructions of the block 203, to a voice - message system (VMS) 121, 122 in FIG. 1 which is operative to record the caller's meSs~ge. A decision inquiry is made by stored program control in block 205 to determine if the called party has voice mail notification service. If the called party's system does not have a voice mail notification (VMaN) service, the message can be 35 recorded in the voice mail system as per block 204 and no further action is taken.
Here the message will remain until the called party decides to access the voice 205~;~77 m~ss~ge system to inquire if mess~ges have been deposited for him/her.
If the mobile subscriber's system has VMaN service the instructions of decision block 205 direct the process flow to a decision block 206 with instructions to determine if the system serving the subscriber has the basic routing option or the S VMS control option. The option is determined by the cellular service provided and is common to all subscribers in that system. With the basic routing option, one audible notification is provided to the mobile subscriber through the speaker of the mobile radiotelephone handset. This one audible notification is provided when the subscriber subsequently receives a call or originates a call, signifying that one or 10 more incoming calls have been transferred to the voice mess~ge system (VMS) 121, 122. Notification on received calls continues until and upon the first mobile originated call. With the alternative VMS control option, notification of existing voice messages is given upon all originations and tt~rmin~hQns until all the newmessages have been retrieved by the mobile subscriber.
If the subscriber's system utiliæs the basic routing option, process flow proceeds to the block 207 with instructions to set a flag in the cellular switch custom calling feature data base associated with the DCS 113, 114 to in(lirate the redirection of the call to the VMS. Failure to leave a voice mess~ge does not affect the setting of this flag. The nature of the next subscriber call connection as either received or 20 originated is determined in decision block 209. If the connection is a received mobile terrnin~ion connection, e.g. a call directed to the mobile subscriber, the process flow proceeds to the block 211 whose instructions cause the issuance of a VMaN tone to notify the subscriber that a call was redirected to the VMS. Process flow returns to the input of block 209 so that repeat notification may be given upon occurrence of 25 the next call.
If the call is initiated or originated by the mobile subscriber the process flow proceeds to block 213 whose instructions cause the issuance of a VMaN tone to notify the subscriber that a call was redirected to the VMS. Process flow proceeds to block 215 which resets the flag in the data base. Process flow then returns to the 30 beginning of the announcement notification process.
Where the subscriber's system has the VMS control option as determined by decision block 206 the process flow continues to a decision block 221 whose instructions determine if the caller has left a m.oss~ge with the VMS. Thecaller may choose to leave a voice mess~e If none is left, no further action is 35 taken. Otherwise, if no other unread mss~ges exist in the voice mailbox the flow process proceeds according to the instructions of decision block 222 to the ;~05(~377 instructions of block 223. If previous unread voice mloss~ges exist in the subscriber's mailbox the flow process proceeds directly to the input of the block 227.
If a new voice mto.ss~ge has been entered and there are no existing voice messages in a subscriber's mailbox, the VMS sends information to the cellular mobile switch 5 center associated with DCS 113, 114, as per the instructions of block 223, andaccording to the instructions of the block 225 a flag indicating the existence of the recorded voice m~ss~ge is set in the data base of the cellular switch.
The process flow proceeds to the decision block 227 to dete~ e if a subsequent call is originated by or termin~ted at the mobile radiotelephone unit and 10 if all new voice messages have been retrieved by the mobile subscriber. If the call terminates at the mobile unit and all new messages have not been retrieved the instructions of block 229 cause a VMaN tone to be issued, via the speaker of themobile radiotelephone handset, and the process flow returns to the input of block 227. Likewise if the call is originated by the mobile unit the instructions of block 15 231 cause the VMaN tone to be issued. Since all new m~ss~ges have not been retrieved the flow returns to the input of block 227.
Upon retrieval of all new stored voice mess~çs~ information indicating this event is sent to the cellular switch in accord with the instructions of the block 233. The flag in the switch custom calling feature data base signifying the existence 20 of a voice message is reset according to the instructions of the block 235 and the process flow returns to the beginning of the announcem~nt notification process.
Following herein is a list of acronyms and technical terms as used in the precee-ling portion of the specification and their respective definitions.
ACDN:
Administrative Call Processing/Database Node - A CDN that has responsibility for assigning new calls to CDNs for processing.
Basic routing option A mode of VMaN which is the alternative to the VMS control option.
As incoming calls to a mobile subscriber are redirected to a VMS, the VMaN flag is 30 set. It is cleared upon the first outgoing call placed by the subscriber from their mobile unit.
ccf: custom calling feature A feature which is usually subscriber changeable, i.e., the subscriber has the ability to turn the feature on and off with a dial tone combination.
Z~)5(~37 ccfdb: custom calling feature data base Repositoly of custom calling feature data, stored on a per subscriber basis, for custom calling features which are subscriber changeable.
CDN:
Call Processing/Database Node - A type of link node in a cellular switch which is responsible for call processing activity. It is a normally a digital computer.
CSN:
Cell Site Node - Link node which provides the interface belweell the Cell Site and the IMS ring.
DCS: digital cellular switch Digital Cellular Switch - A switch with custom hardware and software used as a telephone switch within the cellular systems.
DN:
Directory Number - A mobile subscriber's unique 10-digit mobile phone 15 number.
DSN:
Digital Switch Node - Link node which provides the interface between the Digital Cellular Switch and the IMS ring.
ECP:
Executive Cellular Processor - A colllpulel which is the main processor for the cellular system.
ICN:
Inlel~y~L~ Cellular Node - An link node which provides co..~...l..-ir~tion~ protocol between two cellular switching systems.
IMS ring:
Interprocessor Message Switch ring - A token ring: It carries Messages from the one processor to any other processor on the system.
MRS: mess~ge recording service Message Recording Service - A custom calling feature allowing callers 30 and subscribers to access a centralized answering m~rhinr for the MSC, thus allowing deposit and retrieval of messages.
Mobile Switching Center - All of the control and switching elements of a cellular system. In a typical cellular system the MSC consists of the ECP, IMSring and DCS. (The MSC is also sometimes called the MTSO.) z05(~377 PSTN: public switched telephone network Public Switched Telephone Network - The network that provides public telephone service.
RPC:
S Ring ~eliphelal Controller (node) - Ring node which provides the interface between the ECP and the IMS token ring.
VMaN: flag A bit set in the ccf data base, on a per mobile subscriber basis, to indicate whether there is new voice mail in the subscriber's mailbox (VMS control 10 option), or when a call has been redirected to the mobile subscriber's mailbox (basic routing option).
VMaN: tone An audible tone issued to a mobile subscriber, upon originating a call and/or a call termin~ting to the mobile, when new voice mail is present in the 15 subscriber's mailbox (VMS control option), or when a call has been redirected to the mobile subscriber's mailbox (basic routing option).
VMaN: Voice Mail Notification An optional feature which provides an audible tone to a mobile subscriber when a new voice mail message has been deposited in their voice mail 20 box (VMS control option), or when a call has been redirected to the mobile subscriber's mailbox (basic routing option).
VMS: control option A mode of VMaN which is controlled by co~ --nir~tions between the VMS and the the cellular switch. As new voice mail mrss~ges are deposited and 25 subsequently retrieved from a mobile subscriber's voice mail box, the VMS signals pertinent il~rollnation to the cellular switch, which in turn controls the VMaN flag.
This option is the alternative to the Basic Routing Option.
VMS: voice mail system A co~ ul,l system attached to a telephone switching system, which 30 functions as a central answering m~rhine for telephone subscribers. Each subscriber is assigned a "mailbox", into which messages are deposited by callers, until they are retrieved by the subscriber.
A plurality of cell sites 131, 132 for co,- ." ,u~ ting with mobile radiotelephones within a cell are shown interconnected to the IMS ring via the CSNs 106, 107. These cell site nodes 106,107 are link nodes which provide an interface 5 between the IMS ring and the cell sites 131, 132. The cell itself is a geographical area, idealistically often depicted as a hexagon shaped area, which is served by cell site equipllle-lt to provide mobile radiotelephone service. Use of the cell design~tion and its technical r~mific~tions are well known in the art and it is not believednecessary to disclose the cell and its equipment in detail.
Each cell includes a cell site 131, 132 which is an in~t~ tion within the cell including the equipment necessary to set up and complete calls between the cell site and mobile radiotelephones 133. The e4uipme.ll includes tr:lnsmitting and receiving antennas shown illustratively by the antenna 134 shown tr~n~mitting and receiving signals to and from the mobile radiotelephone 133.
DCS 114 is shown connected, via a voice trunk connection 117 to each cell sites 131,132. This connection facilitates delivery of stored voice mail from the VMS systems 121, 122 to the cell site e l~liplllent at the cell sites 131, 132.
An ;~rlmini~trative call processing/database node 118 (ACDN) is connected to the IMS ring 103 and is operative for assigning calls to the CDNs 108, 20 109 for processing. An intersystem cellular node 119 (ICN) is provided as a link node to provide comm~lnicatiQns protocol between different Cellular telephone systems.
The foregoing cellular system is illustrative of cellular telephone systems to which the principles of the invention may be applied. It is not intended to 25 be limiting of cellular systems to which the principles of the invention may be applied.
A flowchart of the system operations in implementing the voice mail notification system is shown in FIG. 2. The process begins when a called party, having voice mess~ge recording service, does not answer an incoming call. The 30 incoming message is directed, by the instructions of the block 203, to a voice - message system (VMS) 121, 122 in FIG. 1 which is operative to record the caller's meSs~ge. A decision inquiry is made by stored program control in block 205 to determine if the called party has voice mail notification service. If the called party's system does not have a voice mail notification (VMaN) service, the message can be 35 recorded in the voice mail system as per block 204 and no further action is taken.
Here the message will remain until the called party decides to access the voice 205~;~77 m~ss~ge system to inquire if mess~ges have been deposited for him/her.
If the mobile subscriber's system has VMaN service the instructions of decision block 205 direct the process flow to a decision block 206 with instructions to determine if the system serving the subscriber has the basic routing option or the S VMS control option. The option is determined by the cellular service provided and is common to all subscribers in that system. With the basic routing option, one audible notification is provided to the mobile subscriber through the speaker of the mobile radiotelephone handset. This one audible notification is provided when the subscriber subsequently receives a call or originates a call, signifying that one or 10 more incoming calls have been transferred to the voice mess~ge system (VMS) 121, 122. Notification on received calls continues until and upon the first mobile originated call. With the alternative VMS control option, notification of existing voice messages is given upon all originations and tt~rmin~hQns until all the newmessages have been retrieved by the mobile subscriber.
If the subscriber's system utiliæs the basic routing option, process flow proceeds to the block 207 with instructions to set a flag in the cellular switch custom calling feature data base associated with the DCS 113, 114 to in(lirate the redirection of the call to the VMS. Failure to leave a voice mess~ge does not affect the setting of this flag. The nature of the next subscriber call connection as either received or 20 originated is determined in decision block 209. If the connection is a received mobile terrnin~ion connection, e.g. a call directed to the mobile subscriber, the process flow proceeds to the block 211 whose instructions cause the issuance of a VMaN tone to notify the subscriber that a call was redirected to the VMS. Process flow returns to the input of block 209 so that repeat notification may be given upon occurrence of 25 the next call.
If the call is initiated or originated by the mobile subscriber the process flow proceeds to block 213 whose instructions cause the issuance of a VMaN tone to notify the subscriber that a call was redirected to the VMS. Process flow proceeds to block 215 which resets the flag in the data base. Process flow then returns to the 30 beginning of the announcement notification process.
Where the subscriber's system has the VMS control option as determined by decision block 206 the process flow continues to a decision block 221 whose instructions determine if the caller has left a m.oss~ge with the VMS. Thecaller may choose to leave a voice mess~e If none is left, no further action is 35 taken. Otherwise, if no other unread mss~ges exist in the voice mailbox the flow process proceeds according to the instructions of decision block 222 to the ;~05(~377 instructions of block 223. If previous unread voice mloss~ges exist in the subscriber's mailbox the flow process proceeds directly to the input of the block 227.
If a new voice mto.ss~ge has been entered and there are no existing voice messages in a subscriber's mailbox, the VMS sends information to the cellular mobile switch 5 center associated with DCS 113, 114, as per the instructions of block 223, andaccording to the instructions of the block 225 a flag indicating the existence of the recorded voice m~ss~ge is set in the data base of the cellular switch.
The process flow proceeds to the decision block 227 to dete~ e if a subsequent call is originated by or termin~ted at the mobile radiotelephone unit and 10 if all new voice messages have been retrieved by the mobile subscriber. If the call terminates at the mobile unit and all new messages have not been retrieved the instructions of block 229 cause a VMaN tone to be issued, via the speaker of themobile radiotelephone handset, and the process flow returns to the input of block 227. Likewise if the call is originated by the mobile unit the instructions of block 15 231 cause the VMaN tone to be issued. Since all new m~ss~ges have not been retrieved the flow returns to the input of block 227.
Upon retrieval of all new stored voice mess~çs~ information indicating this event is sent to the cellular switch in accord with the instructions of the block 233. The flag in the switch custom calling feature data base signifying the existence 20 of a voice message is reset according to the instructions of the block 235 and the process flow returns to the beginning of the announcem~nt notification process.
Following herein is a list of acronyms and technical terms as used in the precee-ling portion of the specification and their respective definitions.
ACDN:
Administrative Call Processing/Database Node - A CDN that has responsibility for assigning new calls to CDNs for processing.
Basic routing option A mode of VMaN which is the alternative to the VMS control option.
As incoming calls to a mobile subscriber are redirected to a VMS, the VMaN flag is 30 set. It is cleared upon the first outgoing call placed by the subscriber from their mobile unit.
ccf: custom calling feature A feature which is usually subscriber changeable, i.e., the subscriber has the ability to turn the feature on and off with a dial tone combination.
Z~)5(~37 ccfdb: custom calling feature data base Repositoly of custom calling feature data, stored on a per subscriber basis, for custom calling features which are subscriber changeable.
CDN:
Call Processing/Database Node - A type of link node in a cellular switch which is responsible for call processing activity. It is a normally a digital computer.
CSN:
Cell Site Node - Link node which provides the interface belweell the Cell Site and the IMS ring.
DCS: digital cellular switch Digital Cellular Switch - A switch with custom hardware and software used as a telephone switch within the cellular systems.
DN:
Directory Number - A mobile subscriber's unique 10-digit mobile phone 15 number.
DSN:
Digital Switch Node - Link node which provides the interface between the Digital Cellular Switch and the IMS ring.
ECP:
Executive Cellular Processor - A colllpulel which is the main processor for the cellular system.
ICN:
Inlel~y~L~ Cellular Node - An link node which provides co..~...l..-ir~tion~ protocol between two cellular switching systems.
IMS ring:
Interprocessor Message Switch ring - A token ring: It carries Messages from the one processor to any other processor on the system.
MRS: mess~ge recording service Message Recording Service - A custom calling feature allowing callers 30 and subscribers to access a centralized answering m~rhinr for the MSC, thus allowing deposit and retrieval of messages.
Mobile Switching Center - All of the control and switching elements of a cellular system. In a typical cellular system the MSC consists of the ECP, IMSring and DCS. (The MSC is also sometimes called the MTSO.) z05(~377 PSTN: public switched telephone network Public Switched Telephone Network - The network that provides public telephone service.
RPC:
S Ring ~eliphelal Controller (node) - Ring node which provides the interface between the ECP and the IMS token ring.
VMaN: flag A bit set in the ccf data base, on a per mobile subscriber basis, to indicate whether there is new voice mail in the subscriber's mailbox (VMS control 10 option), or when a call has been redirected to the mobile subscriber's mailbox (basic routing option).
VMaN: tone An audible tone issued to a mobile subscriber, upon originating a call and/or a call termin~ting to the mobile, when new voice mail is present in the 15 subscriber's mailbox (VMS control option), or when a call has been redirected to the mobile subscriber's mailbox (basic routing option).
VMaN: Voice Mail Notification An optional feature which provides an audible tone to a mobile subscriber when a new voice mail message has been deposited in their voice mail 20 box (VMS control option), or when a call has been redirected to the mobile subscriber's mailbox (basic routing option).
VMS: control option A mode of VMaN which is controlled by co~ --nir~tions between the VMS and the the cellular switch. As new voice mail mrss~ges are deposited and 25 subsequently retrieved from a mobile subscriber's voice mail box, the VMS signals pertinent il~rollnation to the cellular switch, which in turn controls the VMaN flag.
This option is the alternative to the Basic Routing Option.
VMS: voice mail system A co~ ul,l system attached to a telephone switching system, which 30 functions as a central answering m~rhine for telephone subscribers. Each subscriber is assigned a "mailbox", into which messages are deposited by callers, until they are retrieved by the subscriber.
Claims (7)
1. A method of notifying users of mobile radiotelephones in a cellular telephone system of existing voice mail addressed to them, comprising the steps of:
storing an incoming message in a message recording medium; initiating a notification process in response to the incoming message by setting a flag in a data base describing the features that the user has subscribed to; and responding to the set flag upon the occurrence of a subsequent call involving the user's mobile radiotelephone to issue an audible notification of avoice message existing in a voice mailbox of the user.
storing an incoming message in a message recording medium; initiating a notification process in response to the incoming message by setting a flag in a data base describing the features that the user has subscribed to; and responding to the set flag upon the occurrence of a subsequent call involving the user's mobile radiotelephone to issue an audible notification of avoice message existing in a voice mailbox of the user.
2. A method of notifying users of mobile radiotelephones in a cellular telephone system of existing voice mail addressed to them as claimed inclaim 1, further comprising the step of resetting the flag when the user originates a call.
3. A method of notifying users of mobile radiotelephones in a cellular telephone system of existing voice mail addressed to them as claimed inclaim 1, further comprising the step of resetting the flag when all new stored voice messages are retrieved by the mobile subscriber.
4. A method of providing an audible notification to the user of a mobile radiotelephone in a cellular telephone system to alert the user of at least one existing voice message in a message recording system; comprising the steps of:
responding to a receipt of voice mail in a voice mailbox system by generating a notification that is addressed to the user of a mobile radiotelephone by determining if the mobile radiotelephone subscriber is subscribed to voice mail notification system;
upon determination of a subscriber subscription to a voice mail notification service determining if a caller has left a message on the voice message service recording medium;
upon determination of a recorded voice message setting a flag in a data base dedicated to defining subscriber features that are subscribed to;
issuing an audible voice mail notification tone upon the next use of the mobile radiotelephone; and resetting the flag when the voice mail message has been retrieved.
responding to a receipt of voice mail in a voice mailbox system by generating a notification that is addressed to the user of a mobile radiotelephone by determining if the mobile radiotelephone subscriber is subscribed to voice mail notification system;
upon determination of a subscriber subscription to a voice mail notification service determining if a caller has left a message on the voice message service recording medium;
upon determination of a recorded voice message setting a flag in a data base dedicated to defining subscriber features that are subscribed to;
issuing an audible voice mail notification tone upon the next use of the mobile radiotelephone; and resetting the flag when the voice mail message has been retrieved.
5. A method of providing an audible notification as claimed in claim 4, further comprising the step of re-issuing the audible voice mail notification at each use of the mobile radiotelephone until all new voice mail messages have been retrieved.
6. A method of providing an audible notification as claimed in claim 4, further comprising the step of repeating the audible voice mail notification with each call terminated at the mobile radiotelephone until the first call origination of the mobile radiotelephone.
7. A method of providing an audible notification to the user of a mobile radiotelephone in a cellular telephone system as claimed in claim 4, comprising the further steps of:
determining if the mobile radiotelephone subscriber is subscribed to a basic routing option of a voice mail notification system;
upon determination of a subscriber subscription to a basic routing option of a voice mail notification service determining if an incoming call was redirected to a message recording system;
upon determination of a redirected call to a message recording system, setting a flag in a data base dedicated to defining subscriber features that aresubscribed to; issuing an audible voice mail notification tone upon the next use of the mobile radiotelephone; and resetting the flag at an origination of a call from the mobile radiotelephone.
determining if the mobile radiotelephone subscriber is subscribed to a basic routing option of a voice mail notification system;
upon determination of a subscriber subscription to a basic routing option of a voice mail notification service determining if an incoming call was redirected to a message recording system;
upon determination of a redirected call to a message recording system, setting a flag in a data base dedicated to defining subscriber features that aresubscribed to; issuing an audible voice mail notification tone upon the next use of the mobile radiotelephone; and resetting the flag at an origination of a call from the mobile radiotelephone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/599,572 US5177780A (en) | 1990-10-18 | 1990-10-18 | Method of voice mail notification for cellular telephone systems |
| US599,572 | 1990-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2050377C true CA2050377C (en) | 1995-05-23 |
Family
ID=24400180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002050377A Expired - Fee Related CA2050377C (en) | 1990-10-18 | 1991-08-30 | Method of voice mail notification for cellular telephone systems |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5177780A (en) |
| EP (1) | EP0481683B1 (en) |
| JP (1) | JP2834353B2 (en) |
| KR (1) | KR100244353B1 (en) |
| AU (1) | AU637005B2 (en) |
| CA (1) | CA2050377C (en) |
| DE (1) | DE69129437T2 (en) |
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-
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- 1991-09-27 AU AU84828/91A patent/AU637005B2/en not_active Ceased
- 1991-10-04 JP JP3284177A patent/JP2834353B2/en not_active Expired - Fee Related
- 1991-10-10 EP EP91309334A patent/EP0481683B1/en not_active Expired - Lifetime
- 1991-10-10 DE DE69129437T patent/DE69129437T2/en not_active Expired - Lifetime
- 1991-10-11 KR KR1019910017933A patent/KR100244353B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AU637005B2 (en) | 1993-05-13 |
| EP0481683A2 (en) | 1992-04-22 |
| DE69129437T2 (en) | 1998-10-01 |
| US5177780A (en) | 1993-01-05 |
| EP0481683B1 (en) | 1998-05-20 |
| JP2834353B2 (en) | 1998-12-09 |
| EP0481683A3 (en) | 1992-12-16 |
| DE69129437D1 (en) | 1998-06-25 |
| KR100244353B1 (en) | 2000-02-01 |
| KR920009137A (en) | 1992-05-28 |
| JPH04265046A (en) | 1992-09-21 |
| AU8482891A (en) | 1992-04-30 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKLA | Lapsed | ||
| MKLA | Lapsed |
Effective date: 20090831 |