CA2076286C - Use of incoming caller line identification - Google Patents
Use of incoming caller line identificationInfo
- Publication number
- CA2076286C CA2076286C CA002076286A CA2076286A CA2076286C CA 2076286 C CA2076286 C CA 2076286C CA 002076286 A CA002076286 A CA 002076286A CA 2076286 A CA2076286 A CA 2076286A CA 2076286 C CA2076286 C CA 2076286C
- Authority
- CA
- Canada
- Prior art keywords
- iclid
- call
- numbers
- message
- messages
- 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
- 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
- H04M3/533—Voice mail systems
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2242/00—Special services or facilities
- H04M2242/22—Automatic class or number identification arrangements
-
- 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
- H04M3/42025—Calling or Called party identification service
- H04M3/42034—Calling party identification service
- H04M3/42042—Notifying the called party of information on the calling party
-
- 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
- H04M3/42025—Calling or Called party identification service
- H04M3/42034—Calling party identification service
- H04M3/42059—Making use of the calling party identifier
-
- 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
- H04M3/487—Arrangements for providing information services, e.g. recorded voice services or time announcements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/72—Finding out and indicating number of calling subscriber
Abstract
This invention relates to a method and apparatus for providing customized greeting messages from a switch-based voice messaging service.
Advantageously, special messages may be left for identified callers. The invention further relates to a method and apparatus for determining which of a plurality of numbers received in a common channel signaling message is to be used as the ICLID
number for a specific call. The candidate ICLID numbers include the caller station telephone number, the caller's calling card number, or a special number provided by the caller. Advantageously, such an arrangement can be used to identify callers who are calling away from their home or business telephones.
Advantageously, special messages may be left for identified callers. The invention further relates to a method and apparatus for determining which of a plurality of numbers received in a common channel signaling message is to be used as the ICLID
number for a specific call. The candidate ICLID numbers include the caller station telephone number, the caller's calling card number, or a special number provided by the caller. Advantageously, such an arrangement can be used to identify callers who are calling away from their home or business telephones.
Description
USE OF INCOMING CALLER LINE IDENTIFICATION
Technical Field This invention relates to arrange",ell~s for processing incoming telecom,llu,lications calls whose caller is i~lentified.
5 Problem Incoming caller line identification (ICLID) is becoming increasingly prevalent in the United States. With ICLID, the called customer is informed, usually through a display, of the identity of the calling customer by being informed of the telephone number (and in some private branch exchanges, also the name) of the 10 caller. This arrangement not only informs the called customer as to who is calling, but is the basis of a num~r of local area sign~ling services (LASS): selective call fo,warding wherein only calls from predetermined numbers are ru,w~ded to anothernumber; selective call acceptance wherein only calls from a predetermined list of callers are completed to people or com~ul~. systems; selective call rejection wherein 15 all calls are completed except those from a predetermined list of callers; and selective distinguished alerting wherein calls from a predetermined list of callers are specially alerted with a distinctive ringing signal. A problem of the prior art is that the ICLID number most a~pr~liate for providing LASS features may not be the caller's telephone directory number as identifiçd by Automatic Number 20 Ttlentification.
Solution This problem is solved in the teleco"",lunications switch serving the called customer by de~e~ g from among the numbers received in common channel signaling messages from a switch serving the caller, that number which has 25 been indicated in the messages as being the most appro~iate number for ICLID use.
This number is then used for selecting the personalized messages and for providing the LASS features to the called customer.
Brief Description of the Drawing FIG. 1 is a flow diagram of a method for providing al)pl~liate 30 treatment of calls based on an identified ICLID number; and FIG. 2 is a block diagram of appal~lus for implementing applicant's invention.
_L
Detailed Desc. i,vtion 2 0 7 6 2 8 6 FIG. 1 is flowchart of an illustrative embodiment of the invention. An incoming call is received which call includes an incoming calling line identifier (ICLID) number (action block 101). This number is identified among a plurality of 5 possible numbers as the ICLID number in a common channel signaling message containing ICLID number identification data from a ~wi~chillg system serving thecalling customer. The terminating switch determines which of these numbers is tobe used as the ICLID number by examining the identification data. The number is then used as the ICLID number for that call for display at the called telephone, and 10 voice mçss~ging and LASS features (action block 102). Test 103 determines whether the called customer accepts calls from the caller identified by the determined ICLID number. If not, the call is given approp,iate treatment such ascall fol w~ding or don't answer (action block 105). If the called customer receives calls from this ICLID number, then test 107 determines if the called customer's 15 telephone is busy or does not answer. If the called customer answers the telephone, the call is completed (action block 109). If the called line is busy or does notanswer, then test 111 determines whether message recording is available for thatcalled ~;u~ol~r. If not, the call is disconnected (action block 113). If messagerecording is available to that called customer, test 115 determines whether the called 20 customer has a selective response message service. If not, then the standard response message for the called customer is selected (action block 117). If the called customer does have selective response message service, then the a~l~,iate response message is selected according to the ICLID number (action block 119). For each number on a list of ICLID numbers having special greeting messages, there is a 25 message ID attached which represents the response message to be used. If a match is found between the received ICLID number for the call and a number on that list, then that particular response message is selected. Otherwise, if there is no match with any of the ICLID numbers of that list for the called customer, then the standard response message for that called customer is selected. The response message 30 selected in block 117 or 119 is then played back to the caller (action block 121). For some ICLrD numbers, it may be desirable that no response message be returned as one of the response message options, and/or, that no incoming message will be recorded.
In accordance with this specific imple",e"l~ion, the user uses an 35 AUDIX~M voice mess~ging system offered in SESS(~ switches manufactured by AT&T to prepare the special greetings in response to additional AUDIX pl~ for ~3~ 2076286 preparing these greetings. The user then enters the LASS feature environment to associate the message identifications, supplied by the user in response to LASS
plo~ L~, with numbers on the selective number list for LASS, in a LASS list editing session. AUD~ ploll~tillg arrangelllenls and LASS editing sessions are described5 in manufacturer's brochures supplied by AT&T. Advantageously, the special capabilities of the AUDIX system plolll~Ling features and the LASS list editing features can be used in a coordinated fashion to implement this invention, as described below.
A user of the voice messaging system prepares the special greeting in 10 response to a prompt. The user keys in digits representative of the type of action to be pelr.lmed and, in response to subsequent plullll~L~, enters the message ID. Then the user gives this message ID to the number on a LASS selective message list in a LASS editing session. The system also plolll~ the user to enter a command for deleting a specific greeting. When the specific greeting is deleted, the ICLID
15 numbers for which this greeting is to be applied is also updated to use any other message or is also deleted. Special greetings could be deleted either by specifying one of the message ID numbers for the special greeting or by letting the user listen to the repertory of special greetings one by one and select the particular greeting(s) to be deletçd.
FIG. 2 is a block diagram to illustrate the invention. Two telephones, stations 301 and 303, are connected to an origin~ting switch 305. The originating switch comprises a processor 307 operating under the control of a program 309.
Origin~ting switch 305 is connected via a common channel signaling link 320 (which may traverse one or morç signal transfer points, not shown) to a termin~fing switch 331. The tçrmin~ting switch 331 comprises a processor 333 controlled by aprogram 335. The terrnin~ting switch is connected to two telephone instruments 341 comprising an ICLID display 343 and 345 comprising an ICLID display 347. If telephone station 301 dials 0 plus a directory number and a calling card number, and indicates ~l~;rerence for the calling card ~lumber, then the originating switch 305, 30 using a data transceiver 310, will transmit a common channel signaling message (CCS) 323, which comprises an indicator that the calling card is the ICLID number, over data link 320. The calling card number is then tr~n.~mittçd to the tçrmin~ting telephone station 341. Similarly, telephone station 303 dials a number comprising an initial $~#, an idçntification number (IN), a delimiter **, and a directory number.
35 In this case, the originating switch 305 under the control of processor 307 and program 309, transmits a CCS message 327 indicating that the IN is the ICLID
number. The CCS message is received in data transceiver 336 of termmating switch 331. This number would then be folwarded to t~rmin~fing station 345 for display. Termin:~fing switch 331 also comprises a voice mess~ging system for recording incoming voice messages and for providing greeting messages including 5 specialized greeting messages to callers.
Telephone instrument 304 simply dials a directory number and the default CCS message which in~lic~tes the origin~ting station directory number (ODN) 304 as the number to be displayed at the termin~fing customer's telephone.This is shown in CCS message 329 which in(lic~tes that the ODN is to be used as the 10 ICLID number.
While in this specific embodiment, it is assumed that the ICLID number, i.e., the number which would be displayed at the called customer's telephone station or, unless privacy rest~ictions apply, is the same number that is used for LASS
selective features and for controlling the voice mess~ging system as described above, 15 and while this is the most convenient arrangement with the present signaling format in which the ICLlD number is specifically identified, this need not be the case in future implementations in which an LASS number (i.e., a number to be used for LASS selective fea~ s) and an ICLID number (a number to be displayed to the called customer) can be two sep~le qn~ntities each suitably idçnfified directly or by 20 default.
As indicated above, the ICLlD number need not be the calling customer's telephone number but can be an identification number or a calling card number. If the caller dials an identification number, plop~,lly idçntified, for example, by a preliminary ## and a termin~l **, or gives an indication, in response to a 25 prompt, that a calling card number which has been supplied for a call should be used instead of the calling station directory number and uses this alternate number instead of the calling station directory number for the purpose of searching the lists associated with LASS features and greeting message choice. The advantage of suchan arrangement is that if a caller calls from public station that caller can still access 30 special greeting messages or LASS features use intçn-lçd for that caller even though the calling telephone number is not recognized.
The idçntifi~ation number may consist of a personal i~lentification number plus a special directory number. If the personal identification number matches a number stored in switch 331, then the special directory number is used as 35 the ICLID number for display, for LASS features and for accessing the special greeting message.
Cullelllly the CCS messages between the origin~ting switch and the termin:~ting switch contain a plurality of numbers including both the calling telephone number and calling card number. In order to implement this invention, only a one-byte space in the CCS message needs to be allocated to accommodate the 5 acquired indication data identifying which number is to be used for caller identification. In the pl~rt;lled emb~liment, if the caller keys an identification number, that number should be tr~n~mitte~l in a presently unused field of the Initial Address Message (IAM) tr~nsmittecl to the terminating switch.
It is to be understood that the above description is only of one plerelled 10 embodiment of the invention. Nulllclvus other arrangemenl~ may be devised by one skilled in the art without departing from the scope of the invention. The invention is thus limited only as defined in the accolllpallying claims.
Technical Field This invention relates to arrange",ell~s for processing incoming telecom,llu,lications calls whose caller is i~lentified.
5 Problem Incoming caller line identification (ICLID) is becoming increasingly prevalent in the United States. With ICLID, the called customer is informed, usually through a display, of the identity of the calling customer by being informed of the telephone number (and in some private branch exchanges, also the name) of the 10 caller. This arrangement not only informs the called customer as to who is calling, but is the basis of a num~r of local area sign~ling services (LASS): selective call fo,warding wherein only calls from predetermined numbers are ru,w~ded to anothernumber; selective call acceptance wherein only calls from a predetermined list of callers are completed to people or com~ul~. systems; selective call rejection wherein 15 all calls are completed except those from a predetermined list of callers; and selective distinguished alerting wherein calls from a predetermined list of callers are specially alerted with a distinctive ringing signal. A problem of the prior art is that the ICLID number most a~pr~liate for providing LASS features may not be the caller's telephone directory number as identifiçd by Automatic Number 20 Ttlentification.
Solution This problem is solved in the teleco"",lunications switch serving the called customer by de~e~ g from among the numbers received in common channel signaling messages from a switch serving the caller, that number which has 25 been indicated in the messages as being the most appro~iate number for ICLID use.
This number is then used for selecting the personalized messages and for providing the LASS features to the called customer.
Brief Description of the Drawing FIG. 1 is a flow diagram of a method for providing al)pl~liate 30 treatment of calls based on an identified ICLID number; and FIG. 2 is a block diagram of appal~lus for implementing applicant's invention.
_L
Detailed Desc. i,vtion 2 0 7 6 2 8 6 FIG. 1 is flowchart of an illustrative embodiment of the invention. An incoming call is received which call includes an incoming calling line identifier (ICLID) number (action block 101). This number is identified among a plurality of 5 possible numbers as the ICLID number in a common channel signaling message containing ICLID number identification data from a ~wi~chillg system serving thecalling customer. The terminating switch determines which of these numbers is tobe used as the ICLID number by examining the identification data. The number is then used as the ICLID number for that call for display at the called telephone, and 10 voice mçss~ging and LASS features (action block 102). Test 103 determines whether the called customer accepts calls from the caller identified by the determined ICLID number. If not, the call is given approp,iate treatment such ascall fol w~ding or don't answer (action block 105). If the called customer receives calls from this ICLID number, then test 107 determines if the called customer's 15 telephone is busy or does not answer. If the called customer answers the telephone, the call is completed (action block 109). If the called line is busy or does notanswer, then test 111 determines whether message recording is available for thatcalled ~;u~ol~r. If not, the call is disconnected (action block 113). If messagerecording is available to that called customer, test 115 determines whether the called 20 customer has a selective response message service. If not, then the standard response message for the called customer is selected (action block 117). If the called customer does have selective response message service, then the a~l~,iate response message is selected according to the ICLID number (action block 119). For each number on a list of ICLID numbers having special greeting messages, there is a 25 message ID attached which represents the response message to be used. If a match is found between the received ICLID number for the call and a number on that list, then that particular response message is selected. Otherwise, if there is no match with any of the ICLID numbers of that list for the called customer, then the standard response message for that called customer is selected. The response message 30 selected in block 117 or 119 is then played back to the caller (action block 121). For some ICLrD numbers, it may be desirable that no response message be returned as one of the response message options, and/or, that no incoming message will be recorded.
In accordance with this specific imple",e"l~ion, the user uses an 35 AUDIX~M voice mess~ging system offered in SESS(~ switches manufactured by AT&T to prepare the special greetings in response to additional AUDIX pl~ for ~3~ 2076286 preparing these greetings. The user then enters the LASS feature environment to associate the message identifications, supplied by the user in response to LASS
plo~ L~, with numbers on the selective number list for LASS, in a LASS list editing session. AUD~ ploll~tillg arrangelllenls and LASS editing sessions are described5 in manufacturer's brochures supplied by AT&T. Advantageously, the special capabilities of the AUDIX system plolll~Ling features and the LASS list editing features can be used in a coordinated fashion to implement this invention, as described below.
A user of the voice messaging system prepares the special greeting in 10 response to a prompt. The user keys in digits representative of the type of action to be pelr.lmed and, in response to subsequent plullll~L~, enters the message ID. Then the user gives this message ID to the number on a LASS selective message list in a LASS editing session. The system also plolll~ the user to enter a command for deleting a specific greeting. When the specific greeting is deleted, the ICLID
15 numbers for which this greeting is to be applied is also updated to use any other message or is also deleted. Special greetings could be deleted either by specifying one of the message ID numbers for the special greeting or by letting the user listen to the repertory of special greetings one by one and select the particular greeting(s) to be deletçd.
FIG. 2 is a block diagram to illustrate the invention. Two telephones, stations 301 and 303, are connected to an origin~ting switch 305. The originating switch comprises a processor 307 operating under the control of a program 309.
Origin~ting switch 305 is connected via a common channel signaling link 320 (which may traverse one or morç signal transfer points, not shown) to a termin~fing switch 331. The tçrmin~ting switch 331 comprises a processor 333 controlled by aprogram 335. The terrnin~ting switch is connected to two telephone instruments 341 comprising an ICLID display 343 and 345 comprising an ICLID display 347. If telephone station 301 dials 0 plus a directory number and a calling card number, and indicates ~l~;rerence for the calling card ~lumber, then the originating switch 305, 30 using a data transceiver 310, will transmit a common channel signaling message (CCS) 323, which comprises an indicator that the calling card is the ICLID number, over data link 320. The calling card number is then tr~n.~mittçd to the tçrmin~ting telephone station 341. Similarly, telephone station 303 dials a number comprising an initial $~#, an idçntification number (IN), a delimiter **, and a directory number.
35 In this case, the originating switch 305 under the control of processor 307 and program 309, transmits a CCS message 327 indicating that the IN is the ICLID
number. The CCS message is received in data transceiver 336 of termmating switch 331. This number would then be folwarded to t~rmin~fing station 345 for display. Termin:~fing switch 331 also comprises a voice mess~ging system for recording incoming voice messages and for providing greeting messages including 5 specialized greeting messages to callers.
Telephone instrument 304 simply dials a directory number and the default CCS message which in~lic~tes the origin~ting station directory number (ODN) 304 as the number to be displayed at the termin~fing customer's telephone.This is shown in CCS message 329 which in(lic~tes that the ODN is to be used as the 10 ICLID number.
While in this specific embodiment, it is assumed that the ICLID number, i.e., the number which would be displayed at the called customer's telephone station or, unless privacy rest~ictions apply, is the same number that is used for LASS
selective features and for controlling the voice mess~ging system as described above, 15 and while this is the most convenient arrangement with the present signaling format in which the ICLlD number is specifically identified, this need not be the case in future implementations in which an LASS number (i.e., a number to be used for LASS selective fea~ s) and an ICLID number (a number to be displayed to the called customer) can be two sep~le qn~ntities each suitably idçnfified directly or by 20 default.
As indicated above, the ICLlD number need not be the calling customer's telephone number but can be an identification number or a calling card number. If the caller dials an identification number, plop~,lly idçntified, for example, by a preliminary ## and a termin~l **, or gives an indication, in response to a 25 prompt, that a calling card number which has been supplied for a call should be used instead of the calling station directory number and uses this alternate number instead of the calling station directory number for the purpose of searching the lists associated with LASS features and greeting message choice. The advantage of suchan arrangement is that if a caller calls from public station that caller can still access 30 special greeting messages or LASS features use intçn-lçd for that caller even though the calling telephone number is not recognized.
The idçntifi~ation number may consist of a personal i~lentification number plus a special directory number. If the personal identification number matches a number stored in switch 331, then the special directory number is used as 35 the ICLID number for display, for LASS features and for accessing the special greeting message.
Cullelllly the CCS messages between the origin~ting switch and the termin:~ting switch contain a plurality of numbers including both the calling telephone number and calling card number. In order to implement this invention, only a one-byte space in the CCS message needs to be allocated to accommodate the 5 acquired indication data identifying which number is to be used for caller identification. In the pl~rt;lled emb~liment, if the caller keys an identification number, that number should be tr~n~mitte~l in a presently unused field of the Initial Address Message (IAM) tr~nsmittecl to the terminating switch.
It is to be understood that the above description is only of one plerelled 10 embodiment of the invention. Nulllclvus other arrangemenl~ may be devised by one skilled in the art without departing from the scope of the invention. The invention is thus limited only as defined in the accolllpallying claims.
Claims (6)
1. A method of processing a call comprising the steps of:
receiving, in a terminating switching system, a common channel signalling message, said message comprising a plurality of numbers and indication data of which of said plurality of said numbers is to be used as an Incoming Caller Line Identification (ICLID) number for a said call; and using the number determined from said indication data as an ICLID number for processing said call in said terminating switching system.
receiving, in a terminating switching system, a common channel signalling message, said message comprising a plurality of numbers and indication data of which of said plurality of said numbers is to be used as an Incoming Caller Line Identification (ICLID) number for a said call; and using the number determined from said indication data as an ICLID number for processing said call in said terminating switching system.
2. The method of claim 1 wherein said using step comprises transmitting said number for display to a called telephone.
3. The method of claim 1 wherein said using step comprises using said ICLID number as an ICLID number for Local Area Signalling Services (LASS) features for a called customer of said call.
4. The method of claim 1 wherein said using step comprises:
responsive to determining that message service is to be provided for said call, comparing said ICLID number with stored ICLID numbers corresponding to a specialgreeting message; and if said received ICLID number matches one of said stored numbers, returning on said call a greeting message corresponding to said matched stored number.
responsive to determining that message service is to be provided for said call, comparing said ICLID number with stored ICLID numbers corresponding to a specialgreeting message; and if said received ICLID number matches one of said stored numbers, returning on said call a greeting message corresponding to said matched stored number.
5. The method of claim 1 wherein said receiving comprises receiving common channel signalling (CCS) messages comprising said numbers and said indication data.
6. Apparatus for processing a telephone call comprising:
means for receiving a common channel signalling message; and processor means operative under the control of a program for processing messages for said call, said messages comprising a plurality of numbers and indication data of which of said numbers is to be used as an ICLID number for said call fordetermining the ICLID number for said call; and for using the determined ICLID
number for processing said call in response to previously stored indications from a called customer of said call of how calls from said determined ICLID number are to be processed.
means for receiving a common channel signalling message; and processor means operative under the control of a program for processing messages for said call, said messages comprising a plurality of numbers and indication data of which of said numbers is to be used as an ICLID number for said call fordetermining the ICLID number for said call; and for using the determined ICLID
number for processing said call in response to previously stored indications from a called customer of said call of how calls from said determined ICLID number are to be processed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/783,052 US5278894A (en) | 1991-10-25 | 1991-10-25 | Use of incoming caller line identification |
| US783,052 | 1991-10-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2076286A1 CA2076286A1 (en) | 1993-04-26 |
| CA2076286C true CA2076286C (en) | 1996-05-07 |
Family
ID=25128021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002076286A Expired - Fee Related CA2076286C (en) | 1991-10-25 | 1992-08-18 | Use of incoming caller line identification |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5278894A (en) |
| EP (1) | EP0539102B1 (en) |
| JP (1) | JP3339889B2 (en) |
| AT (1) | ATE168236T1 (en) |
| CA (1) | CA2076286C (en) |
| DE (1) | DE69226147T2 (en) |
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| US5568540A (en) * | 1993-09-13 | 1996-10-22 | Active Voice Corporation | Method and apparatus for selecting and playing a voice mail message |
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| US7142846B1 (en) | 1994-01-05 | 2006-11-28 | Henderson Daniel A | Method and apparatus for improved paging receiver and system |
| US7426264B1 (en) * | 1994-01-05 | 2008-09-16 | Henderson Daniel A | Method and apparatus for improved personal communication devices and systems |
| US6427064B1 (en) | 1994-01-05 | 2002-07-30 | Daniel A. Henderson | Method and apparatus for maintaining a database in a portable communication device |
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| GB2303761A (en) * | 1995-07-25 | 1997-02-26 | Callcatchers Limited | Telephone answering and diary system |
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-
1991
- 1991-10-25 US US07/783,052 patent/US5278894A/en not_active Expired - Lifetime
-
1992
- 1992-08-18 CA CA002076286A patent/CA2076286C/en not_active Expired - Fee Related
- 1992-10-16 EP EP92309441A patent/EP0539102B1/en not_active Expired - Lifetime
- 1992-10-16 AT AT92309441T patent/ATE168236T1/en not_active IP Right Cessation
- 1992-10-16 DE DE69226147T patent/DE69226147T2/en not_active Expired - Lifetime
- 1992-10-23 JP JP28480692A patent/JP3339889B2/en not_active Expired - Lifetime
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|---|---|
| ATE168236T1 (en) | 1998-07-15 |
| US5278894A (en) | 1994-01-11 |
| EP0539102B1 (en) | 1998-07-08 |
| CA2076286A1 (en) | 1993-04-26 |
| JP3339889B2 (en) | 2002-10-28 |
| EP0539102A2 (en) | 1993-04-28 |
| EP0539102A3 (en) | 1994-03-23 |
| DE69226147T2 (en) | 1999-04-15 |
| JPH05227295A (en) | 1993-09-03 |
| DE69226147D1 (en) | 1998-08-13 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKLA | Lapsed |