`
`United States Patent
`Orwick et al.
`
`US006201856B1
`US 6,201,856 B1
`Mar. 13, 2001
`
`(10) Patent N0.:
`(45) Date of Patent:
`
`(54)
`
`(75)
`
`EMERGENCY TELEPHONE CALL
`NOTIFICATION SERVICE SYSTEM AND
`METHOD
`
`Inventors: David Anthony Orwick; Karen
`Jeanne Pelletier, both of Crystal Lake;
`Laura Marie Gri?ith, Dundee, all of
`IL (Us); Todd August Bartels, New
`Berlin, WI (US); Thomas J oseph
`McBlain, Arlington Heights, IL (US);
`Dianna Inara Tiliks, Elk Grove, IL
`Gordon Lynn Blumenschein,
`WOOdridge, IL (Us); James Danie]
`Kovarik, Batavia, IL (Us)
`
`4,510,350
`4,743,892
`5,077,788
`5,128,979
`
`4/1985 Wagner et a1. .
`5/1988 Zayle -
`12/1991 Cook et a1. .
`7/1992 Reich et a1. .
`git/$115 '
`3/1993 Carrier‘ et a1‘ '
`5’195’126
`5/1994 Patel _
`5:315:636
`7/1994 SeaZholtZ et a1. .
`5,333,173
`8/1994 Hoskinson et a1. .
`5,339,351
`1/1997 Tendler .
`5,598,460
`5,659,605 * 8/1997 Voit et a1. .......................... .. 379/243
`CI 8.1. .
`7/1998 Nlkohn, Jr. .
`9/1998 Pons et a1. .
`
`5,787,429
`5,805,670
`
`(73)
`
`Assignee: Ameritech Corporation, Hoffman
`Estates, IL (US)
`
`FOREIGN PATENT DOCUMENTS
`WO 97/35440
`9/1997 (WO) .
`
`Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U_S_C_ 154(k)) by 0 days_
`
`Appl NO _ 09/211 636
`
`'
`
`"
`
`’
`
`Filed.
`
`Dec. 15, 1998
`
`Int. Cl.7 .................................................. .. H04M 11/04
`US. Cl. ................................ .. 379/40- 379/45- 379/41
`Field of Search
`’ 379/38’ 39 40
`46 47’ 48’ 49’
`5’0 543 ’177’
`’
`’
`
`’
`
`’
`
`’
`
`’
`
`’
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`_
`_
`
`et al
`
`(21)
`(22)
`(51)
`(52)
`(58)
`
`(56)
`
`* Cited by examiner
`
`_
`Primary Examiner—Curt1s A. KuntZ
`Assistant Examiner—Melur Ramakrishnaiah
`(74) Attorney, Agent, or Firm—Brinks Hofer Gilson &
`
`Lione
`
`(57)
`
`ABSTRACT
`
`_
`A System and method for emergency telepholle can notl?'
`cation. The system includes an AIN capable syvitch, a service
`control pomt (SCP) having a database of designated contact
`numbers associated With a service subscriber telephone
`number, and an intelligent peripheral (IP) in communication
`With the SCP for contacting the designated contact numbers.
`The method includes the steps of recognizing an N11 trigger
`and the SCP initiating telephone calls, via the IP, to each of
`the contact numbers corresponding to the telephone number
`of the subscriber making the emergency telephone call.
`
`4,417,100
`4,492,820
`
`11/1983 Carlson et a1. .
`1/1985 Kennard et al. .
`
`18 Claims, 3 Drawing Sheets
`
`?8
`
`2|
`
`NETWORK ARCHITECTURE
`
`CONet (WIDE AREA NETWORK TCP/IP)
`
`2°
`
`5
`
`SUBSCR'PTION
`DATA
`
`x2
`
`8M8
`
`_ll_ 24
`/
`
`ioFErTm‘nTwloi AREA
`NFrwoRK Temp)
`FEEDS FROM $01/
`SOAC, ETC.
`
`3o
`
`\ \ T e
`
`3' N0 SUBSCRIPTION
`DATA IN CSN'S
`
`6
`
`INTEROFFICE
`TRUNKING
`
`Intrado Ex. 1033 - 1
`
`
`
`US. Patent
`
`Mar. 13, 2001
`
`h
`
`3pl01
`
`US 6,201,856 B1
`
`
`
`
`
`<mm<unis.EzzmMo
`
`
`
`EEO...xmozcmz
`
`at..28v~\fl_W:829¢momma_
`
`_
`_
`
`z
`
`9.5Eommbm
`
`5.6.0
`
`Om
`
`u_
`
`INNNN_
`
`mxz:5mamm
`
`
`
`S1111
`wl/E1
`
`mommommkz.MW...»in,u,
`zo_.EEomm:moz85mmHIIIIIm022stmaa-_
`
`P282_<20_mmm
`
`N.
`
`on
`
`.4.
`
`m.mm
`
`
`
`60I<._:.:m<Omoosakzm
`
`S
`
`murmommkz.
`
`
`
`1mmoz_xz:m._.amm
`
`mm
`
`\
`
`0_
`
`mm
`
`Intrado Ex. 1033 - 2
`
`
`
`mmakomtxomd.xmogkw2
`
`0.0..
`
`_1
`
`
`
`AEEQFvEOBkmz<mm<was:$200
`
`
`
`
`
`Intrado Ex. 1033 - 2
`
`
`
`
`
`U.S. Patent
`
`Mar. 13, 2001
`
`Sheet 2 of3
`
`US 6,201,856 B1
`
`FIGS
`
`START
`
`CALLER GOES
`QFPHQQK
`(SSP)
`
`[33
`
`40
`
`DIAL TONE
`(SSP)
`
`42
`
`/
`DIALED men's
`
`FIGZ
`
`2| \
`23\ SUBSCRIBER NO. CONTACT LIST
`~---—
`(‘25
`xxx-xxxx
`xx x-xx xx
`XXX-XXXX
`XXX'XXXX
`XXX-XXXX
`
`0
`
`xxx-xxxx
`
`xxx-xxxx
`
`xxx-xxxx
`xx x-xxxx
`
`xxx-xxxx
`xxx-xxxx
`
`'
`
`xxx-{xxx
`
`50
`ANALZLROUTE
`No+ RESPONSE SENT
`T0 SSP
`
`/52
`ROUTE CAILL
`—>
`BASED ON
`ROUTING DATA
`RECVD TO 9"
`
`TCP/IP LINK TO
`CSN MESSAGE
`COMP! LED
`
`K56
`
`CSN BEGINS
`MAKING CALLS TO_*
`NUMBERS ON LIST
`
`Intrado Ex. 1033 - 3
`
`
`
`US. Patent
`
`Mar. 13, 2001
`
`Sheet 3 0f 3
`
`US 6,201,856 B1
`
`h224><|_n_
`
`mm
`
`~muzoh224><n_n:**
`
`mmmEDzMI...65.
`
`
`
`z_<o<wo<mmm2<m><m._F02On.Qz<
`
`PmmENIP02:50
`
`022mz<mo
`
`
`
`222,6EE8031E0:5E2E4
`
`2295NEmmE<$50:2N9%mo“.
`
`
`.8$5252
`
`5328VMV—LCaz2:.25E263oz
`
`8.932222
`
`
`
`
`
`«so:52:32802.52624SEQ5.2.H29.:89oz
`
`mmE265
`
`_22<><IE
`
`
`
`mam—2322.04.2200.3E
`
`
`
`owe—>0ma.5320mm
`
`Fab—20.530>m
`
`.5n_2_mZE.
`
`
`
`mo...xomxo
`
`10:0...>2<
`
`
`:32uo_0>..=~50:
`
`
`um._.:>>41.6.8mmmmmmtd.._._<2
`
`Swampzaoozm2:2m.E58930.mm.222j<850.2.“29892:2,
`
`
`
`mez5<FZOoxx
`
`mum.2:2
`
`o»
`
`
`
`
`
`Nn=2m.E.<mm3m2<02\>m3m
`
`2.2mz.z_<o<mums-Dz>E.**m224><IE
`
`
`
`mu>>m2<Oz\>m:m
`
`520mzz<><._n_”90:“.0H.325FEE
`
`>420m224>3152:25...?¢oz<m224><.._n_”NE235.2.3
`
`
`
`¢oz<m224><._n_”VPSZEEh?
`
`
`
`02wat.._.<.346025950main?*
`
`m224><._n_E952:2It;“E.6
`
`Intrado Ex. 1033 - 4
`
`$5232
`
`:628328x2$8...>55$28622423¢N224E:
`
`3.25.5N2.
`
`
`
`8.vzz<oz<mzz<>4:”544E;
`
`S.
`
`20%szzoo9.So:zoEm:
`
`Intrado Ex. 1033 - 4
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`US 6,201,856 B1
`
`1
`EMERGENCY TELEPHONE CALL
`NOTIFICATION SERVICE SYSTEM AND
`METHOD
`
`BACKGROUND OF THE INVENTION
`
`In an emergency situation, people need to quickly contact
`the appropriate agency (police, ?re department, ambulance,
`poison control, etc.). Many communities provide a single
`telephone number, such as 911, Which connects a caller to a
`central dispatcher to gather information and relay the call to
`the appropriate destination. In addition to locating and
`contacting the appropriate agency, the caller may also Wish
`to notify other parties that an emergency situation exists.
`Several systems and methods for providing auxiliary
`noti?cation have been proposed. One system discloses a
`transmitting device With a panic button that is Worn by a user
`that, When activated, transmits a signal to a base unit
`attached to a telephone. The base unit automatically calls a
`predetermined list of telephone numbers and plays a prere
`corded message. Another system discloses attaching an
`emergency call monitor to a user’s telephone. When an
`emergency call is made, the monitor Waits until the call is
`complete and then automatically dials out to a messaging
`service that calls predetermined numbers and plays a pre
`recorded message. In yet another system, emergency call
`detection equipment is attached to a telephone sWitch and
`reacts to 911 telephone calls by activating a calling service
`to contact a predetermined list of telephone numbers.
`One draWback of these emergency telephone call noti?
`cation systems is the need for specialiZed equipment in
`addition to the standard telephone system equipment. Also,
`many existing noti?cation systems have limited ?exibility
`and only a feW basic features.
`Accordingly, there is a need for an improved system and
`method of communicating emergency telephone call notices
`to designated parties that provides ?exible and ef?cient use
`of existing infrastructure. BRIEF DESCRIPTION OF THE
`DRAWINGS
`FIG. 1 illustrates an emergency telephone call noti?cation
`system according to a presently preferred embodiment.
`FIG. 2 is a diagram illustrating a contact list stored at the
`SCP shoW in FIG. 1.
`FIG. 3 is a How chart illustrating a method of providing
`an emergency telephone call noti?cation service on the
`system of FIG. 1 according to a presently preferred embodi
`ment.
`FIG. 4 is a How chart illustrating a preferred method of
`contacting designated contact numbers, the method for use
`in the system of FIG. 1.
`
`DETAILED DESCRIPTION OF THE
`PRESENTLY PREFERRED EMBODIMENTS
`
`As described in greater detail beloW, a preferred system
`and method for providing an emergency telephone call
`noti?cation service utiliZes advanced intelligent netWork
`infrastructure to avoid the need to add or maintain additional
`hardWare to support the service. FIG. 1 illustrates a tele
`communications system 10 according to a preferred embodi
`ment. The system preferably includes a subscriber telephone
`12 in communication With a ?rst advanced intelligent net
`Work (AIN) capable service sWitching point (SSP) 14 over
`a voice/information line 16. The ?rst SSP 14 is in commu
`nication over a voice/information line With a public safety
`access point (PSAP) 18. The PSAP 18 is preferably an
`emergency call receiving station having one or more emer
`
`15
`
`25
`
`35
`
`45
`
`55
`
`65
`
`2
`gency dispatchers to handle and route emergency telephone
`calls to the appropriate agency. In one embodiment, the
`PSAP 18 is accessible from the subscriber telephone 12 by
`dialing a predetermined telephone number such as 911.
`The ?rst SSP 14 includes an AIN emergency telephone
`number trigger recognition capability for recogniZing dialed
`digits of any of a number of emergency telephone numbers.
`In a preferred embodiment, the ?rst SSP 14 is con?gured to
`recogniZe an N11 trigger When a 911 telephone number is
`dialed.
`The system 10 also includes one or more service control
`points (SCP) 20. An SCP 20 is an AIN netWork element
`containing logic and data necessary to provide functionality
`required for the execution of a desired communication
`service. An SCP 20 generally permits separation of service
`logic from sWitching functionality such that additional ser
`vices maybe developed Without the need to provision soft
`Ware in each individual SSP. A suitable SCP 20 is the
`Advantage SCP manufactured by Lucent Technologies. In a
`preferred embodiment, the SCP 20 includes a designated
`contact number list 21 (FIG. 2) stored in memory corre
`sponding to each subscriber telephone number that sub
`scribes to the emergency telephone number noti?cation
`service described beloW. The contact list 21 includes a list of
`subscriber telephone numbers 23 and a list of the contact
`telephone numbers 25 associated With each subscriber tele
`phone number.
`Other than speci?c system memory limitations and tele
`phone company policy, there may be any number of contact
`numbers per subscriber. In one embodiment, each subscriber
`is permitted four contact numbers. In another embodiment,
`a subscriber may be represented by a range of telephone
`numbers so that each telephone number in the range of
`numbers is associated With the same set of contact numbers.
`For example, a subscriber may be a company having a range
`of consecutive telephone numbers Where the same contact
`numbers are desired for all of the numbers in the range.
`Additionally, the contact numbers may also be for commu
`nication devices or services other than a standard plain old
`telephone service (POTS) telephone. For example, the con
`tact numbers may be for cellular telephones, paging
`services, or other communication devices and services.
`The SCP 20 communicates With SSP’s, such as the ?rst
`SSP 14, over a data channel via at least one service transfer
`point (STP). The system 10 may include local STP’s (LSTP)
`22 and a regional STP (RSTP) 24. The LSTP’s 22 and RSTP
`24 are connected via data channels and also connect the SCP
`to the SSP’s via data channels. A suitable data signal
`extended for use With the STPs is the American National
`Standards Institute (ANSI) signalling system No. 7 (SS7). A
`suitable SCP/SSP communication protocol is the AIN 0.1
`SCP/SSP protocol set forth in Bellcore Technical Reference
`TR-NWT-001285, entitled AIN SWitch-Service Control
`Point Application Protocol Interface Generic Requirements,
`Issue 1, August 1992.
`The SCP 20 also communicates With one or more compact
`service nodes (CSN) 26 or other type of service node/
`intelligent peripheral. In one embodiment, the SCP 20
`communicates directly With each CSN 26 over a Wide area
`netWork
`28 such as CONet using transfer control
`protocol/internet protocol (TCP/IP). Other networks capable
`of running TCP/IP are also suitable for facilitating commu
`nication betWeen each CSN and an SCP. In other
`embodiments, the SCP may communicate With the CSN 26
`via one or more STPs and an SSP.
`Each CSN 26 is a netWork element of the AIN that
`contains resources to exchange information With an end user
`
`Intrado Ex. 1033 - 5
`
`
`
`US 6,201,856 B1
`
`3
`and perform other functions such as call origination and tone
`generation. The CSN 26 provides special resources for
`interactions betWeen the end user and the netWork such as
`dual tone multi-frequency (DTMF) recognition, playing
`pre-recorded announcements and tone generation. A service
`node/intelligent peripheral platform suitable for use as a
`CSN is manufactured by Lucent Technologies. Although the
`system 10 illustrated in FIG. 1 shoWs a certain number of
`netWork elements (SCPs, CSNs, STPs, and SSPs), those of
`ordinary skill in the art understand that the presently pre
`ferred system and method may include more complex net
`Works having a plurality of the interconnected netWork
`elements. Preferably, each CSN 26 is con?gured to com
`municate emergency call notices to numbers stored in the
`SCP database 21 and transmitted to the CSN 26 over the
`WAN 28 or other communication link. In one embodiment,
`the CSN 26 includes a caller ID generator 31 utiliZing
`standard caller ID logic and containing a caller ID message
`to send to the contact telephones 36 associated With a
`particular subscriber number. In another embodiment, the
`CSN 26 contains a plurality of emergency noti?cation
`message templates 33 stored in memory. Each of the tem
`plates 33 may have a general voice or teXt message for
`transmission to the contact telephones 36. Information
`regarding the particular emergency telephone call made by
`the subscriber is insertable into the appropriate message
`template. The CSN 26 is in communication With a second
`SSP 30 via data 32 and voice 34 lines. Although the CSN’s
`26 in FIG. 1 are connected to a different SSP than the
`subscriber 12, the CSN’s may also be connected to the same
`SSP as the subscriber.
`The system 10 further includes one or more contact
`telephones 36 connected to a third SSP 38. Each contact
`telephone is associated With a designated contact telephone
`number in the designated contact list 21 stored at the SCP
`20. Again, although the contact telephones 36 are shoWn as
`communicating With an SSP separate from the SSPs con
`nected to the subscriber and the CSN’s, different con?gu
`rations are contemplated Wherein the subscriber telephone
`12, contact telephones 36 and CSN’s 26 are all connected to
`the same SSP or other combinations of SSPs. In order to
`implement the emergency telephone call noti?cation
`service, the CSN preferably contains a port identity transfer
`control protocol/user de?ned protocol (TCP/UDP) address
`along With an internet protocol (IP) address identi?ed by a
`socket. This virtual port (socket) number is identi?ed and
`assigned on the CSN 26. Preferably, a CSN 26 is in
`communication With a SSP 30 over both data and voice lines
`utiliZing ISDN-BRI connectivity. SS7 TCAP messaging is
`utiliZed betWeen the SSP’s and the SCP.
`Referring noW to FIG. 3, a preferred embodiment of the
`method of implementing an emergency telephone number
`noti?cation service is described beloW With relation to the
`system shoW in FIG. 1. When a subscriber 12 goes off-hook
`(picks up the telephone receiver), the SSP 14 presents a dial
`tone to the subscriber and subscriber dials a telephone
`number (at steps 38, 40 and 42). The ?rst SSP 14 receives
`these dialed digits and eXamines the dialed digits to see if
`they correspond With an AIN trigger. If the dialed digits are
`an emergency telephone number, such as 911, the SSP
`recogniZes an N11 trigger and contacts the SCP 20 for
`instructions (at step 44). If no N11 trigger is recogniZed, the
`telephone call is processed and sent off to the designated
`destination. When an N11 trigger is encountered and the SSP
`14 contacts the SCP 20, an infoianalyZe query is sent to the
`SCP 20 containing the calling party ID as Well as standard
`SS7 call information (at step 26). The SCP 20 receives the
`
`10
`
`15
`
`25
`
`35
`
`45
`
`55
`
`65
`
`4
`infoianalyZe query and determines Whether or not the
`calling party ID is associated With an emergency telephone
`noti?cation service subscriber (at step 48). The SCP pref
`erably performs this step by comparing the calling party ID
`With the information stored in the subscriber list 21 at the
`SCP 20.
`If the calling party ID is not recogniZed by the SCP as a
`subscriber to the emergency telephone call noti?cation
`service, the SCP sends an analyZediroute message back to
`the SSP and the SSP routes the call based on standard 911
`routing data to the appropriate 911 operator at a PSAP 18 (at
`steps 50, 52). The analyZediroute message includes a called
`party ID, a calling party ID and a primary trunk group. If the
`SCP does recogniZe the calling party ID as a subscriber to
`the emergency telephone call noti?cation service, the SCP
`20 calls on enhanced 911 (E911) logic residing in memory
`at the SCP 20 and establishes a communication link, such as
`a TCP/IP link over the WAN 28, to a CSN 26 (at step 54).
`Preferably, the TCP/IP message sent by the SCP includes the
`subscriber’s telephone number, a time When the subscriber
`called 911, a list of contact numbers associated With that
`subscriber number, and dialing instructions. In one alterna
`tive embodiment, the dialing instructions may already reside
`on the CSN and the SCP simply forWards the contact
`numbers and emergency telephone call information.
`As soon as the CSN responds and con?rms receipt of the
`instructions, the SCP returns a message to the ?rst SSP 14
`alloWing the 911 call to terminate at the PSAP 18. Finally,
`the CSN 26, pursuant to the instructions received from the
`SCP 20, begins making telephone calls via the second SSP
`30 to the designated contact numbers on the list (at step 56).
`As shoWn in FIG. 1, the contact telephones 36 are connected
`to a third SSP 38 that is in communication With the second
`SSP 30 over interof?ce trunk lines 39. In other
`embodiments, the contact telephones 36 may be connected
`to any sWitch or may be connected to an intermediary
`communications device, such as a PBX, that is in commu
`nication With a sWitch.
`As shoWn in FIG. 4, one preferred method of contacting
`telephone numbers listed on the contact list associated With
`a subscriber number is shoWn. The CSN 26 dials the ?rst
`number on the contact list received from the SCP 20 (at step
`58). In dialing each number, the CSN also transmits a caller
`ID message from the caller ID generator 31 indicating that
`the call is an emergency noti?cation call. Preferably, the
`CSN invokes standard caller ID logic and uses a pseudo
`caller ID message such as “911 Notify” rather than the
`number of the 911 caller. If there is no ansWer at the ?rst
`contact number, the CSN proceeds to dial the neXt contact
`number (at step 60) if there is an ansWer at any particular
`contact number, the CSN invokes ansWer veri?cation logic
`Which, in a preferred embodiment, consists of playing an
`announcement in response to detecting an ansWer (at step
`62). Preferably, the announcement is a pre-recorded message
`assembled from the appropriate one of the message tem
`plates 33 stored at the CSN 26 stating that the call is a
`message from the 911 Noti?cation Service. In one
`embodiment, the ansWer veri?cation logic at the CSN may
`include a live ansWer detector Where the ansWering party is
`requested to either press a key on the telephone pad or orally
`respond. In this Way, the CSN can determine Whether a
`person or ansWering device ansWers the call. The CSN then
`Waits for a response and checks to see if there is a touch-tone
`or voice response (at step 64).
`If the CSN 26 receives no response and an ansWering
`machine or voice mail system is detected then an announce
`ment is played for recordal on the ansWering machine or
`
`Intrado Ex. 1033 - 6
`
`
`
`US 6,201,856 B1
`
`5
`voice mail and a timer in the answer veri?cation logic at the
`CSN Will keep track of the number of calls made to a given
`contact number and the time interval betWeen each repeated
`call. In one embodiment, the CSN Will place subsequent
`telephone calls to the contact number every ?ve minutes (at
`steps 66, 68). The announcement left on the ansWering
`machine preferably includes information related to the sub
`scriber telephone number and of time and day When the
`emergency telephone call Was made from that number.
`Additionally, the message left on the ansWering machine or
`voice mail is preferably only left one time. Subsequent
`ansWers by ansWering machine or voice mail system Will not
`trigger the announcement again. Additionally, if an ansWer
`ing machine or voice mail system is encountered after the
`?rst hour of attempting to place the emergency noti?cation
`call, the CSN Will continue placing calls at a greater interval
`of time for up to 24 hours after the original emergency
`telephone call Was made by the subscriber. In one embodi
`ment the interval of contacting the telephone number on the
`contact list Would be increased to every 15 minutes. In
`another embodiment, the CSN may be instructed to leave an
`announcement every hour that the noti?cation system is
`trying to reach the person at the number and repeating the
`information that an emergency call Was placed from a
`particular number at a given time and day (at step 70).
`If a response (touch tone or voice) is received from a
`person ansWering at the contact number dialed by the CSN,
`the CSN 26 may play an announcement indicating that the
`emergency call Was placed from the subscriber telephone 12
`at a particular time/day and Will automatically attempt to
`connect the person ansWering the noti?cation call to the
`subscriber telephone (at steps 72, 74). Additional messages
`indicating the system is attempting to connect the call may
`be played While the contact person is Waiting on hold. If the
`subscriber telephone 12 from Which the emergency tele
`phone call Was originally placed is busy, or no ansWer is
`received, the CSN 26 may simply play an announcement
`indicating that the line is busy and that the contact person
`should try later or may repeat the attempt to connect the
`contact person to the subscriber telephone number a prede
`termined number of times (at steps 76, 78). In another
`embodiment, the SCP may instruct the CSN to dial all of the
`contact numbers simultaneously to reach as many of the
`subscriber’s chosen contact group as quickly as possible.
`The system and method described above provides the
`advantage of an automated emergency telephone noti?ca
`tion implemented on eXisting hardWare such as AIN netWork
`elements. No additional hardWare is required. Furthermore,
`in a preferred embodiment AIN communication protocols
`may be implemented to easily adapt and con?gure AIN
`netWork elements to alloW for expeditious contact of des
`ignated parties While not interfering With the emergency
`telephone call placed by the subscriber. Preferably, the
`system and method described above may be used With
`emergency telephone call systems such standard 911,
`enhanced 911, or other custom emergency telephone call
`systems.
`It is intended that the foregoing detailed description be
`regarded as illustrative rather than limiting, and that it be
`understood that the folloWing claims, including all
`equivalents, are intended to de?ne the scope of this inven
`tion.
`We claim:
`1. In a telecommunications system having at least one
`subscriber telephone in communication With an advanced
`intelligent netWork (AIN) capable sWitch, at least one intel
`ligent peripheral (IP) in communication With the AIN
`
`15
`
`25
`
`35
`
`45
`
`55
`
`65
`
`6
`capable sWitch, at least one service control point (SCP) in
`communication With the sWitch, and a public safety ansWer
`ing point (PSAP) in communication With the SCP and the
`sWitch, a method of notifying at least one designated tele
`phone number that an emergency telephone call has been
`made from the subscriber telephone, the method comprising
`the steps of:
`recogniZing an emergency telephone call at the sWitch;
`the sWitch informing the SCP of the emergency telephone
`call;
`the SCP instructing the IP to dial the at least one desig
`nated telephone number;
`the IP informing the at least one designated telephone
`number of the emergency telephone call from the
`subscriber telephone; and
`automatically placing a call from the at least one desig
`nated telephone number to the subscriber telephone if
`a person ansWers the at least one designated telephone
`number.
`2. The method of claim 1, Wherein the emergency tele
`phone call is a 911 telephone call.
`3. The method of claim 2, Wherein the step of recogniZing
`an emergency telephone call trigger further comprises rec
`ogniZing an N11 trigger.
`4. The method of claim 1, Wherein the SCP further
`comprises a database having a list of subscriber telephones
`and a list of at least one designated telephone number
`associated With each of the subscriber telephones in the list
`of subscriber telephones, and Wherein the step of the SCP
`instructing the IP to dial the at least one designated tele
`phone number comprises the SCP retrieving a ?rst of the at
`least one telephone number associated With the subscriber
`telephone number and instructing the IP to contact the ?rst
`of the at least one telephone numbers that an emergency
`telephone call has been placed from the subscriber tele
`phone.
`5. The method of claim 1, Wherein the SCP further
`comprises a database having a list of subscriber telephone
`numbers and a list of at least one designated telephone
`number associated With each of the subscriber telephone
`numbers, and Wherein the step of the SCP instructing the IP
`to dial the at least one designated telephone number com
`prises the SCP retrieving all of the telephone numbers
`associated With the subscriber telephone number and
`instructing the IP to contact all of the designated telephone
`numbers simultaneously.
`6. The method of claim 1, Wherein the step of the IP
`informing the at least one designated telephone number
`further comprises the step of the IP supplying a caller ID
`message to the at least one designated telephone number
`indicating an incoming call from an emergency call noti?
`cation service.
`7. The method of claim 1, Wherein the step of the IP
`informing at least one designated telephone number further
`comprises playing a prerecorded message if a person
`ansWers the emergency call noti?cation call.
`8. The method of claim 1, Wherein the step of the IP
`informing the at least one designated number comprises the
`IP dialing a ?rst of the at least one designated numbers and
`Waiting a predetermined number of rings before trying to
`contact a neXt one of the at least one designated numbers.
`9. An emergency call noti?cation system comprising:
`a subscriber telephone;
`an AIN capable sWitch in communication With a public
`service access point (PSAP) and the subscriber
`telephone, the AIN sWitch con?gured to recogniZe an
`emergency telephone call;
`
`Intrado Ex. 1033 - 7
`
`
`
`US 6,201,856 B1
`
`7
`a service control point (SCP) in communication With the
`switch, the SCP comprising a database having a list of
`emergency call noti?cation service subscribers, the
`SCP con?gured to determine if an emergency telephone
`call Was made by an emergency call noti?cation service
`subscriber and correlate the emergency call noti?cation
`service subscriber number With a list of at least one
`designated contact number for the emergency call
`noti?cation service subscriber;
`an intelligent peripheral (IP) in communication With the
`SCP, the IP responsive to an instruction from the SCP
`to contact the at least one designated contact number;
`and
`means for automatically connecting a designated contact
`number ansWered by a person to the emergency call
`noti?cation service subscriber number.
`10. The system of claim 9 further comprising a caller ID
`generator comprising a predesignated message stored in
`memory.
`
`10
`
`15
`
`8
`11. The system of claim 10 Wherein the ansWer veri?ca
`tion logic comprises a call repetition timer.
`12. The system of claim 10 Wherein the ansWer veri?ca
`tion logic further comprises a live ansWer detector.
`13. The system of claim 10 Wherein the ansWer veri?ca
`tion logic comprises a prerecorded message for transmission
`to an ansWering machine.
`14. The system of claim 9 Wherein the IP comprises
`ansWer veri?cation logic.
`15. The system of claim 9, Wherein the IP is in commu
`nication With the SCP via a Wide area netWork.
`16. The method of claim 1, Wherein the step of the SCP
`instructing the IP comprises sending a message via a Wide
`area netWork connection to the IP.
`17. The method of claim 16, Wherein the message com
`prises a TCP/IP message.
`18. The system of claim 9, Wherein the IP further com
`prises a plurality of prerecorded message templates.
`
`*
`
`*
`
`*
`
`*
`
`*
`
`Intrado Ex. 1033 - 8
`
`