EP1243123A1 - An implementation of call drop-back in a telecommunication network - Google Patents
An implementation of call drop-back in a telecommunication networkInfo
- Publication number
- EP1243123A1 EP1243123A1 EP99964616A EP99964616A EP1243123A1 EP 1243123 A1 EP1243123 A1 EP 1243123A1 EP 99964616 A EP99964616 A EP 99964616A EP 99964616 A EP99964616 A EP 99964616A EP 1243123 A1 EP1243123 A1 EP 1243123A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- call
- subscriber
- vms
- message server
- message
- 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.)
- Withdrawn
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
- H04M3/48—Arrangements for recalling a calling subscriber when the wanted subscriber ceases to be busy
-
- 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
- H04M3/53333—Message receiving aspects
- H04M3/53341—Message reply
Definitions
- the present invention relates to a method for performing a call drop-back in a telecommunication system and to a corresponding control device as well as to accordingly adapted telecommunication network elements provided with the same.
- a telecommunication system means any telecommunication in which at least one exchange for switching calls between at least two subscribers or between one of said subscribers and a message server is provided, and wherein said message server is adapted to maintain a record of a plurality of previous messages intended for a called subscriber and registered to the message server record from a respective calling subscriber.
- exchange is used in this specification as a term having its origin in the field of circuit switched networks, the term “exchange” is also intended to cover corresponding devices known as “routers” in the field of packet switched networks and in the filed of "Voice over IP calls" and/or Internet Telephony.
- call as used herein is intended to be understood in its broadest sense such that it covers any kind of connection (circuit switched, packet switched, or IP (Internet Protocol) based connections as well as real time, non-real time, constant bit rate or variable bit rate connections) .
- the present invention is not limited to any particular type of telecommunication system, and the present invention may be applied to a PSTN telephone system such as the ISDN network, or to a mobile radio telecommunication system such as the GSM telecommunication system or to IP telephony systems. Still further, the principles as set out in this specification may also be applied to a telecommunication system still under development such as the UMTS system (3 rd generation mobile telecommunication system) as long as any of such aforementioned systems fulfills the above noted prerequisites of an "exchange” and a "message server".
- UMTS system 3 rd generation mobile telecommunication system
- a message server means any means and/or network element adapted to keep a record of a plurality of previous messages intended for a called subscriber (and/or a plurality of subscribers registered to the network) and registered to (i.e. stored in or recorded to) the message server record from a respective calling subscriber.
- messages has to be understood in its broadest sense and it may comprise voice mail messages (recorded spoken speech messages) as well as text messages such as SMS messages and any other type of messages such as data messages comprising images and/or text and/or voice (for example also referred to as "multimedia messages") in whatever combination as long as the message has a content which is defined by the calling subscriber .
- call drop-back feature means a feature (service) offered by the telecommunication network which enables a called subscriber listening to the messages registered for him to make a direct call to a respective calling subscriber who has left the listened message for the called subscriber.
- call return service According to the prior art, several related services in connection with such a service also named call return service have been described.
- the called subscriber as the recipient of messages stored on the message server is not enabled to initiate a listening operation for learning the contents of the messages stored for him. Instead, according to this prior art arrangement, the called subscriber is contacted upon initiation of the message server, which periodically tries to contact the called subscriber m order to deliver the message.
- EP-A2-0 897 239 by Roth et al. discloses a program controlled communication system having access to a voice mail server.
- a called subscriber can retrieve messages intended for him from a voice mail server VMS.
- a calling subscriber may automatically be called back upon retrieval of the corresponding message from the VMS.
- a callback mechanism does not allow a direct callback from the ca_ led to the (previously) calling subscriber, since in connection with the callback service, only an exchange of another stored message (from the called subscriber to the previously calling) subscriber is enabled. Stated in other words, only pre-stored messages are exchanged with an interaction of the message server being involved between the called and the calling subscriber or vice versa.
- this object is achieved by a method for performing a call drop-back in a telecommunication system, said telecommunication system comprising at least at least one exchange for switching calls between at least two subscribers or between one of said subscribers and a message server, wherein said message server is adapted to maintain a record of a plurality of previous messages intended for a called subscriber and which previous messages were recorded to the message server record from a respective calling subscriber, wherein said method comprises the steps of: invoking a callback call from said called subscriber to said calling subscriber based on the information recorded in said message server record via at least one of said at least one exchange, and upon invoking said callback call, setting the system into a state enabling said called subscriber to be connected back to said message server after the termination of said invoked callback call.
- control device for performing a call drop- back in a telecommunication system, said control device being adapted to carry out the method according to the present invention.
- a control device may even be distributed over at least two telecommunication network elements .
- the present invention relates to a telecommunication network element comprising a control device as aforementioned.
- the call drop-back feature i.e. to make a callback call to the subscriber who has left a message (to which message subscriber A listens when making the listening call) to the message server.
- the callback call will be dropped to some or at least one of the previous exchanges (or even to the originating exchange) from where the call will be routed to the previously calling subscriber C.
- the connection between the exchange and the message server will be released immediately and if the re-routed call (callback call) does not succeed or is terminated, the exchange-to-message- server connection (MSC-VMS/SN) will be re-established.
- the parameter / indication includes at least a call drop back type indicator (CDB TYPE INDICATOR) , indicating if a re-establishment of the listening call to the message server (VMS/SN) is needed after the callback call is terminated, a call drop back release reason indicator (CDB RELEASE REASON INDICATOR) , indicating whether the callback call to said calling subscriber (C) has been successful or not, and a message server session indicator (VMS/SN SESSION ID) , containing a subscriber identification of the listening called subscriber A and a message identification identifying the message listened to, these identifications enabling to resume the listening call after the callback call has terminated.
- CDB TYPE INDICATOR indicating if a re-establishment of the listening call to the message server (VMS/SN) is needed after the callback call is terminated
- CDB RELEASE REASON INDICATOR indicating whether the callback call to said calling subscriber (C) has been successful or not
- a called subscriber listening to his messages left for him at the message server, is enabled to carry on listening to his messages after a callback call to the subscriber who has left that message, without the need to make a new call to the message server afterwards.
- a called subscriber can make different calls to several different numbers during one message server session.
- Fig. 1 shows a schematic block diagram of a telecommunication network architecture and the relevant components required for the present invention to be carried out;
- Fig. 2 (composed of Figs. 2A and 2B) illustrates a schematic signaling scenario of signals relevant for the present invention which are transmitted between subscribers and telecommunication network elements depicted in Fig. 1 ;
- Fig. 3 shows a basic example of a message record provided m the message server and the data stored therein;
- Fig. 4 shows an example of a data format usable for transmission of the VMS service indication
- Fig. 5 shows an actual format of the VMS service indication .
- Fig. 1 shows a schematic block diagram of a telecommunication network architecture and the relevant components required for the present invention to be carried out.
- the architecture of a mobile telecommunication network has been chosen, such as for example, the GSM network.
- a calling subscriber C when calling a called subscriber A, communicates via an air interface AIR-I/F with a base station subsystem BSS, which in turn communicates via an interface A-I/F with a network switching subsystem NSS.
- the base station subsystem BSS comprises at least one base station (not shown) and at least one base station controller (not shown) .
- the base station subsystem and/or the at least one base station controller communicates via the interface A-I/F with a network switching subsystem NSS, particularly, with one of at least one exchange such as a mobile service switching center MSC.
- a network switching subsystem NSS particularly, with one of at least one exchange such as a mobile service switching center MSC.
- MSC mobile service switching center
- the exchange MSC communicates via an interface VMS-I/F with a message server such as, for example, a voice mail server / service node VMS/SN.
- a message server such as, for example, a voice mail server / service node VMS/SN.
- the signal flow can be depicted as C -> BSS -> MSC -> BSS -> A, in case that subscriber A can be reached and answers his phone.
- the called subscriber A does not answer his phone / terminal either to some defect, due to being busy with another call, or because he has switched off his terminal, this may be informed to the subscriber C.
- the subscriber C may then initiate to leave a message via the exchange MSC at the message server VMS/SN which is intended for the called subscriber A.
- the signal flow in this case can be summarized as C -> BSS -> MSC -> VMS/SN.
- the leaving of a message may be implemented to be performed automatically at the side of the exchange MSC upon detection that the called subscriber is not reachable.
- the previously called subscriber may then interrogate the message server VMS/SN to learn whether any message has been left for him.
- the information flow is A -> BSS -> MSC -> VMS/SN -> MSC -> BSS -> A.
- the subscriber A thus listening to his voice mail may initiate a direct callback call to - li the calling subscriber who has left the message listened to, without the need for dialing a number. Namely, when A wants to call back C, the call is "dropped back" from the message server to a previous exchange MSC involved in connecting the subscriber A to the message server, from where the callback call is then connected further to the previously calling subscriber C.
- the present invention and to the new signaling between the exchange and the message server as presented m the present specification, it is enabled to a previously called subscriber listening to his messages such as voice mails, to continue to listen thereto after having made a callback to a calling subscriber without the need to establish a new call to the message server.
- Fig. 2 (composed of Figs. 2A and 2B) illustrates a schematic signaling scenario of signals relevant for the present invention which are transmitted between subscribers and telecommunication network elements depicted in Fig. 1.
- the base station subsystem BSS indicated in Fig. 1 has now been omitted m the drawing. Nevertheless, actually, it is still present and involved in the "real" signaling. Moreover, in Fig. 2, the network elements and subscribers involved in the signaling as well as the signaling itself are illustrated in the horizontal direction, while the time axis is intended to be represented m vertical direction.
- a calling subscriber C, m step SI tries to call a called subscriber A via the exchange MSC (and the base station subsystem BSS (not shown) .
- a step Sla it is detected that the called subscriber A is not reachable.
- this is either signaled to the subscriber C in order to decide whether he wants to leave a message for the subscriber A (not shown) , or at the side of the exchange MSC there is automatically provided the possibility to the calling subscriber C to leave a message for the called subscriber at the message server VMS/SN, as shown in step S2. Since the way of leaving a message in the message server is not within the scope of the present invention, the corresponding description is somewhat abbreviated and kept short by merely outlining the signal flow in principle.
- step S3 the subscriber A initiates a listening call via the exchange MSC to the message server VMS/SN in order to listen to one or more messages which have been left for him at the message server VMS/SN.
- a VMS/SN session is opened, and the call drop back feature (CDB feature) is invoked.
- CDB feature call drop back feature
- the detection is illustrated as being performed at the message server side, this can also be performed at the exchange side.
- a corresponding control device would then be distributed over a plurality of at least two network elements, while in the latter case, the control device would be located at and/or form part of the exchange MSC.
- the listening subscriber A obtains the message information of the stored message (s) .
- the message information of one such message is forwarded to the called subscriber A.
- the message contains for example a voice mail message together with an identification of the previously calling subscriber C, for example his telephone number MSISDN, or already his name. Having received this information, i.e. having listened to the voice mail, the called subscriber A may personally decide (e.g. dependent on the contents of the listened voice mail and/or dependent on the identity of the subscriber C who has left this message for the called subscriber A) whether he wants to call back the previously calling subscriber C.
- step S6 the called subscriber invokes a callback call, the callback call invocation being forwarded via the exchange MSC to the message server VMS/SN.
- a pointer points to the entry in the record of recorded messages which has immediately been listened to by the called subscriber A. If a callback call is thus invoked, at the message server side an indication, i.e. a VMS service indication is generated and transmitted, step S7, via the VMS-I/F interface to the exchange MSC.
- This indication i.e. the VMS service indication is, for example, transmitted using ISUP (ISDN User Part) signaling.
- the listening call Upon having received the transmitted indication, at the exchange side, the listening call is released. More precisely, from step S3 onwards, there exists a connection from subscriber A to the exchange MSC, and also further from the MSC to the message server VMS/SN. Releasing the listening call now means, that only the connection between the exchange MSC to the message server is released.
- step S9 a connection to the previously calling subscriber C is established (step S9b) .
- This connection between subscribers A and C is also referred to as callback call.
- the subscriber A can directly call back the subscriber C and talk to him. Having finished the conversation between subscribers A and C, the callback call is released, step S10.
- the callback call is released, step S10.
- the callback call can not be established due to the subscriber C being not reachable (e.g. because of being busy in another call, etc., as mentioned above)
- the callback call (attempt) is released and the release reason is returned in step S10 to the exchange MSC.
- step Sll at the exchange side, the transmitted release reason is set and/or written in a call drop-back release reason indicator (CDB release reason indicator) m the VMS service indication (to be described later in greater detail). Also, the VMS session indicator will be written to the VMS service indication parameter. Thereafter, in step S12, the message server session (VMS/SN session) is resumed (if the CDB type indicator in the VMS service indication previously transmitted in step S7 was set to a value indicating indicated "YES"), and m step S13, the record of messages kept at the message server is updated. That is, the CDB release reason transmitted in the indication in step S12 is written into a corresponding message record.
- CDB release reason indicator the VMS service indication
- step S14 it is detected whether there is/are one or more other messages recorded at the message server record within the partition assigned to the called /listening subscriber which are not labeled as having served as a basis for a successful callback call to the calling subscriber who has originated the call/ left the message at the message server VMS/SN.
- step S5 If such a message is present, the sequence returns to step S5 and the steps from S5 through S14 are repeated. Otherwise, the message server session is terminated.
- the called subscriber A can make a call to several different numbers of previously calling subscribers who have called him, during one message server VMS/SN session. There is no longer a need to make a new call to a message server after a callback call has been made to a previously calling subscriber.
- Fig. 3 shows an example of a message record MESSAGE RECORD provided in the message server VMS/SN and the data stored therein .
- a partition may be identified by the subscribers telephone number MSISDN (e.g. MSISDN A). In a more secure manner, it may be identified by a personal identification code such as a PIN number (personal identification number) and or a combination thereof, also in a ciphered form, if desired.
- MSISDN e.g. MSISDN A
- PIN number personal identification number
- call number #1 represents the oldest message
- call number #N represents the most recently recorded message
- the order of the messages can be arranged such that they are arranged in an order of priority of the registered message. For example, there may be provided a possibility for a calling subscriber to indicate that his message is urgent (high priority) , of normal importance (medium priority) or of subordinated importance (low priority). Then, the messages can be sorted according to the indicated priority thereof, if necessary in combination with the time of being recorded.
- CALLING SUBSCR. ID (MSISDN) No.) This indicates the identity of the calling subscriber, for example by his telephone number (Cl, C2, ..., Cn) , which is used for establishing the callback call. Also, the MSISDN number can be stored together with the subscriber's name in order to simplify the recognition of the calling subscriber to the called subscriber.
- the messages can be sorted according to the subscribers' telephone numbers and/or names, also in combination with the above mentioned sorting according to time of registration and/or priority.
- the message may for example be a voice mail message (VM1, VM2, ..., VMn) , or any other message as mentioned earlier above.
- VM1, VM2, ..., VMn voice mail message
- the data entries in a subscriber partition mentioned under items 1 to 3 herein above are written at the time of recording the message by the calling subscriber C who can not reach the called subscriber A at that time, while the data entry mentioned under item 4 is written in step S13 in Fig. 2B, when the message record is updated upon a callback call establishment.
- Fig. 4 shows a basic example of a data format usable for transmission of the VMS service indication.
- the VMS service indication comprises three fields, which are partly again divided in sub-fields.
- the VMS/SN SESSION ID identifies the session at the message server to which -after a callback call has been performed- is to be returned.
- the VMS/SN SESSION ID field includes a subscriber ID field, e.g. including the subscriber's telephone number MSISDN, such as the MSISDN A. This subscriber ID represents a pointer to the subscriber partition in the message record.
- the VMS/SN SESSION ID includes a message ID, i.e. an identification of the message that has been listened immediately before.
- the message ID is represented by the call number (mentioned m connection with the Fig. 3 description) .
- the message ID thus represents a pointer to a specific message having this number within the respective subscriber partition (pointed to by the subscriber ID) .
- this field CDB RELEASE REASON INDICATION of the VMS SERVICE INDICATION does not contain a data entry, or at least one which is commonly known as “don't care” and which has no meaning.
- a data entry is referred to as "No Indication"
- CDB TYPE INDICATOR This call drop-back type indicator indicates whether a return to the message server VMS/SN is necessary and/or possible after a callback call has been established and thereupon released.
- CDB TYPE INDICATOR may be coded, in a most general implementation, by using one bit indicating "return: yes” (e.g. "1") or "return: no” (e.g. " 0 " ) .
- the CDB TYPE INDICATOR may assume four values (coded by 2 bits) referred to as "NO indication”, "Unsupervised CDB”, “Supervised CDB” or “CDB return” (the latter being also referred to as “intelligent CDB”) .
- the exchange MSC Upon receipt of the corresponding information, the exchange MSC then initiates an appropriate action depending on the received information. Further details are set out in connection with the description of Fig. 5.
- the CDB TYPE INDICATOR will be set in the VMS/SN according to the instructions of the subscriber A listening to the messages left for him at the VMS/SN when the subscriber A configures his services.
- the VMS/SN may be adapted to make the decision concerning the CDB TYPE INDICATORE depending an the services offered by the VMS/SN to the subscriber A and depending on whether there are messages left in the message server VMS/SN.
- the setting of the CDB TYPE INDICATOR may be performed based on the following examples of a logic evaluation of data items described before :
- CDB TYPE INDICATOR "YES” if current call number ⁇ maximum call number n OR “YES” if any CDB RELEASE REASON INDICATION in the record (of the partition) indicates "not successful”. (In the latter case ("the OR clause"), a retry for a callback call for a previously unsuccessful callback call attempt can result in the flow) .
- step S12 the CDB TYPE INDICATOR need not be transmitted back to the message server, as it has been evaluated before, so that in such a case, also the value "NO indication" may be transmitted.
- Fig. 5 shows an actual format of the VMS service indication which shows the subfields of the VMS service indication in greater detail.
- the VMS service indication comprises spare fields and /or spare bits which are used to provide for a possibility to expand the indicators in the future, if necessary. For example, it could become necessary to code more CDB release reasons etc., for which coding more bits are required.
- the CDB type indicator is composed of two bits, thus enabling the coding of four contents and/or meanings, namely:
- the value "No indication” is used in the CDB type indicator in the IAM (Initial Address Message) with which the MSC-VMS/SN connection will be re-established (see step S12 m Fig. 2B) . If there is the value "No indication” in the REL (RELease) message which invokes the call dropback functionality, the exchange MSC is caused to operate like in case of the Unsupervised CDB (see below), where there is no return to the VMS/SN connection.
- CDB release reason is coded using three bits, thus enabling the coding of up to eight CDB release reasons.
- Five values are used in connection with the illustrated actual format of the VMS service indication, namely :
- the VMS Session Indicator consists of 8 to 28 bytes having a contents as discussed above, i.e. containing the subscriber ID and a message ID needed to resume the VMS/SN session after the (new) callback call has finished or after an unsuccessful establishment of the callback call.
- a control device comprises (not shown) accordingly adapted means for listening / session opening / CDB feature invocation, detection, obtaining, callback call invocation, indication transmission, listening call release, callback call establishment and release, setting session resumption and indication transmission, as well as for updating.
- those means may be provided in a single network element such as the exchange (MSC) , but where appropriate, the means constituting the control device may also be distributed over at least two telecommunication network elements e.g. over the exchange MSC and the message server VMS/SN.
- MSC exchange
- VMS/SN message server
- the present invention proposes a method for performing a call drop-back in a telecommunication system, said telecommunication system comprising at least at least one exchange (MSC) for switching calls between at least two subscribers (A, C) or between one of said subscribers and a message server (VMS/SN) , wherein said message server (VMS/SN) is adapted to maintain a record of a plurality of previous messages intended for a called subscriber (A) and which previous messages were recorded to the message server record from a respective calling subscriber (C) , wherein said method comprises the steps of: invoking (S ⁇ ) a callback call from said called subscriber (A) to said calling subscriber (C) based on the information recorded in said message server record via at least one of said at least one exchange (MSC) , and upon invoking said callback call, setting the system into a state enabling said called subscriber (A) to be connected back to said message server (VMS/SN) after the termination of said invoked
- MSC message server
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1999/010146 WO2001047228A1 (en) | 1999-12-20 | 1999-12-20 | An implementation of call drop-back in a telecommunication network |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1243123A1 true EP1243123A1 (en) | 2002-09-25 |
Family
ID=8167539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99964616A Withdrawn EP1243123A1 (en) | 1999-12-20 | 1999-12-21 | An implementation of call drop-back in a telecommunication network |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1243123A1 (en) |
JP (1) | JP2003518828A (en) |
AU (1) | AU3040600A (en) |
CA (1) | CA2395150A1 (en) |
WO (1) | WO2001047228A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6839555B2 (en) * | 2001-04-30 | 2005-01-04 | Lucent Technologies Inc. | Method and apparatus for supporting voice message services with automatic rebound in a wireless intelligent network |
FI112019B (en) * | 2001-06-06 | 2003-10-15 | Elisa Comm Oyj | Method and arrangement for establishing a connection by means of a feedback function of a voicemail service and a voicemail system equipped with the feedback function to establish a connection |
DE102004046402A1 (en) | 2004-09-24 | 2006-04-06 | Siemens Ag | A method for output handling messages stored in mailboxes of a message storage system |
ATE541400T1 (en) * | 2007-06-20 | 2012-01-15 | Alcatel Lucent | METHOD AND DEVICES FOR ESTABLISHING A CALLBACK BY A USER WHO RECEIVES A MEDIA STREAM |
KR102485787B1 (en) * | 2016-12-23 | 2023-01-09 | 엘지디스플레이 주식회사 | Array Substrate for Thin Film Transistor And Display Device Of The Same |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR9306961A (en) * | 1992-08-26 | 1999-01-12 | Bellsouth Corp | Personal number communications system |
CA2119086C (en) * | 1994-03-15 | 1998-06-16 | Thomas A. Gray | Help desk improvement |
US6393108B1 (en) * | 1998-07-02 | 2002-05-21 | Lucent Technologies Inc. | Voice messaging system which allows a remote user to return a call without disconnecting from a telephone line |
-
1999
- 1999-12-20 WO PCT/EP1999/010146 patent/WO2001047228A1/en not_active Application Discontinuation
- 1999-12-20 JP JP2001547835A patent/JP2003518828A/en active Pending
- 1999-12-21 AU AU30406/00A patent/AU3040600A/en not_active Abandoned
- 1999-12-21 EP EP99964616A patent/EP1243123A1/en not_active Withdrawn
- 1999-12-21 CA CA002395150A patent/CA2395150A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO0147228A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2001047228A8 (en) | 2002-11-07 |
AU3040600A (en) | 2001-07-03 |
JP2003518828A (en) | 2003-06-10 |
CA2395150A1 (en) | 2001-06-28 |
WO2001047228A1 (en) | 2001-06-28 |
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