JP2003518828A - Method and apparatus for executing call dropback in a communication network - Google Patents

Method and apparatus for executing call dropback in a communication network

Info

Publication number
JP2003518828A
JP2003518828A JP2001547835A JP2001547835A JP2003518828A JP 2003518828 A JP2003518828 A JP 2003518828A JP 2001547835 A JP2001547835 A JP 2001547835A JP 2001547835 A JP2001547835 A JP 2001547835A JP 2003518828 A JP2003518828 A JP 2003518828A
Authority
JP
Japan
Prior art keywords
call
message
vms
message server
sn
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.)
Pending
Application number
JP2001547835A
Other languages
Japanese (ja)
Inventor
コイヴラ アスコ
ユハ ヴァッリネン
セッポ カッリオ
ユハニ クリント
マッティ タポネン
パトリック マットソン
イルッカ メキネン
ユハ ランピネン
テロ ルオト
Original Assignee
ノキア コーポレイション
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ノキア コーポレイション filed Critical ノキア コーポレイション
Priority to PCT/EP1999/010146 priority Critical patent/WO2001047228A1/en
Publication of JP2003518828A publication Critical patent/JP2003518828A/en
Application status is Pending legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/50Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/53Centralised arrangements for recording incoming messages, i.e. mailbox systems
    • H04M3/533Voice mail systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/48Arrangements for recalling a calling subscriber when the wanted subscriber ceases to be busy
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/50Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/53Centralised arrangements for recording incoming messages, i.e. mailbox systems
    • H04M3/533Voice mail systems
    • H04M3/53333Message receiving aspects
    • H04M3/53341Message reply

Abstract

SUMMARY OF THE INVENTION The present invention proposes a method for performing call dropback in a communication system, wherein at least the communication system communicates between at least two subscribers (A, C) or one of said subscribers. At least one switch (MSC) for switching a call to and from a message server (VMS / SN), wherein the message server (VMS / SN) transmits a plurality of previous messages to a called party (A). Record, wherein the previous message is recorded in a message server record from each caller (C), and the method comprises: at least one of at least one switch (MSC); Initiating a callback call from the called party (A) to the calling party (C) based on the information recorded in the message server record via 6) and, based on the activation of the callback call, setting the system to a state in which the called party (A) can connect back to the message server (VMS / SN) after the termination of the activated callback call. And It also proposes a corresponding control device as well as a network element comprising the same device.

Description

Description: TECHNICAL FIELD The present invention relates to a method for performing call dropback in a communication system,
With corresponding control devices and correspondingly modified communication network elements
About. (Background Art) In recent years, functions provided by communication networks related to so-called value-added services
The number has increased significantly. In this function, call the called party A (for some reason, do not reach when called)
Calling party C leaves a message on the message server for called party A.
Functions have been established that allow Therefore, it is left on the message server
Are considered as messages registered to the message server.
Is done. Callee A may be left with the person at any time thereafter (and / or
(Registered in the message server). One
In short, such a message server is an answering machine provided on the communication network side.
It has a telephone function. The following points should be noted regarding the present invention. The communication system has at least two people
Calls between subscribers, or at least between one of the subscribers and the message server
Means any communication provided with at least one switch for switching
The message server is addressed to the callee and the message server from each caller
Saves multiple previous message records registered in
ing. In this specification, the term "switch" is derived from the line.
Although used as a term in the switching network field, the term
The term is the field of packet-switched networks, and "voice over IP calls"
And / or a communication device known as a "router" in the field of Internet telephony.
It is intended to include Also, as used herein, "call"
The terms are circuit-switched, packet-switched, or IP (Internet Protocol).
Connection, as well as real-time, non-real-time, constant bit rate,
Broadly understood to cover any kind of connection, such as flat connection
That is intended. In this context, the invention is not limited to any particular type of communication system,
Further, the present invention relates to a PSTN telephone system such as an ISDN network or a GSM telephone system.
Applicable to mobile wireless communication systems such as communication systems, or IP telephone systems.
Please understand. Further, the principles described herein may be applied to any of the aforementioned systems.
As long as the system meets the essential conditions of the "switch" and "message server",
M systems (3rd generation mobile communication systems) and other communication systems currently under development
Applicable. [0005] Further, the message server may include a callee (and / or
Message server records from each of the callers
Keep multiple previous message records registered (i.e., stored or recorded) in the
Any means and / or network elements that
To taste. In this context, the term "message" needs to be understood in a broad sense
And any combination as long as the message contains the content defined by the caller.
Images and / or text and / or audio (eg, also referred to as "multimedia")
Voice mail messages (recorded utterances), as well as SMS messages
Message of any format such as text message or data message such as message
Page can be included. Further, the “call dropback function” used in this specification is a communication network.
Incoming call listening to a message provided by the work and registered to the person
Caller can directly call each caller who has left a message for the called party.
Means a function (service) that enables The prior art includes such services, also called call return services.
Some related services related to the service are described. [0007] Granted to Miller on May 29, 1990 (Bell Commun
U.S. Pat. No. 4,930,15 (assigned to the Recommendations Research)
No. 2 discloses a call return telephone service. To the disclosed device
According to the caller's phone number, the caller
Only the number list is stored in the switching device (exchange) of the network. However, this device does not include any specific menu with content defined by the caller.
It does not disclose that the message can be left at the called party. Furthermore, as a result
This prior art device does not include a message server. [0008] European Patent Application by Hnson and Rudrapatha (assigned to AT & T)
The open number EP0795992 has a prepaid litter associated with the message server.
A method and apparatus for tools are disclosed. According to this prior art device, the message stored in the message server
The callee who receives the message confirms the contents of the message stored for him / her
Cannot start listening operation. Instead, according to this prior art device, the incoming call
Attempts to contact the called party to deliver the message on a regular basis
You will be notified when the message server starts. However, the message server periodically contacts the called party, and
Can only be contacted up to the maximum number of "trials"
There is a risk that the left message will not be delivered to the person. Also, the called party is left
Message during the day, because the message cannot be
May be unpleasant if delivered at inappropriate times during the night. Messe
Page only if the message has been successfully delivered to the callee by the message server.
Open a callback to the caller (prepaid for the callback call)
The possibility to start is given. In addition, Roth et al. (Assigned to Siemens AG) published a European patent application.
The number EP0897239 contains a program that has access to the voice mail server.
A ram control communication system is disclosed. According to this prior art, the called party
A message addressed to a person can be retrieved from the voice mail server VMS. Outgoing call
Automatically call back the call based on the corresponding message search from VMS
Can receive. However, with regard to the callback service, (calling from a called party first
Only the subscriber of another stored message switch (to a caller who has
Therefore, by the callback means, from the called party (calling first)
You cannot call back directly to the caller. In other words, the caller and the caller
Message server interaction involved between the caller and the caller.
Only previously stored messages are exchanged. Thus, with respect to callback services, known prior art systems include
There are various disadvantages and disadvantages for users (subscribers). DISCLOSURE OF THE INVENTION [0012] Accordingly, it is an object of the present invention to provide a method in which a called party A has a
Meanwhile allowing each caller to call back to a different caller
. According to the present invention, the object is to perform call dropback in a communication system
Communication system is provided between at least two subscribers and
Exchanges at least one call between one of the subscribers and the message server.
At least one switch for rerouting, wherein the message server is addressed to the called party.
Saves multiple previous message records, making each outgoing call
The previous message from the sender is recorded in the message server record.
The method comprises, via at least one of the at least one switch, a message server
Callback call from called party to calling party based on information recorded in record
Call based on the triggering of the callback
After the end of the callback call, the called party can connect back to the message server.
Configuring the system as follows. Advantageous further refinements of the method according to the invention are set out in the dependent claims. Further, a potential object of the present invention is to implement call dropback in a communication system.
A control unit that performs the method of the present invention.
Has become. The control device comprises at least two communication network elements
May be dispersed. The present invention also relates to a communication network element comprising the above-mentioned control device.
Connect. In other words, according to the present invention, the called party A makes a listening call to the message server.
In doing so, it activates the call dropback function, that is, the message server
A subscription that leaves a message (the message that subscriber A hears when making a listening call)
It is possible to make a callback call to the person. The callback call is
Forked to a specific or at least one earlier switch (or just the original switch)
From which the call will be routed to the previous subscriber C
. The connection between the switch and the message server is immediately disconnected and the rerouting
If the call (callback call) does not subsequently occur or ends, the exchange
The message server connection (MSC-VMS / SN) is re-established. First with caller A
When the call / connection between the calling caller C is released, the subscriber A
Since the connection with the message server is re-established, subscriber A
To the person who left the message after listening to the next message left on the server (subscriber)
A new callback call can be made. [0015] To achieve this, the required information is passed in the message
Between the switch and the switch, but the transmission is an ISUP (ISDN user part) signal.
Based on the use of the formula. The name of the new parameter, also called the sending "designator"
The name may be “VMS service indicator”. Parameters / designators are
After listening to the callback call, listen to the message server (VMS / SN)
Call drop-back indicator that indicates whether call re-establishment is required
(CDB format indicator), callback call to caller (C) works well
Call dropback release reason indicator (CDB release)
Reason indicator), the subscriber identifier of the called party A being listened to, and the message to be heard.
Server indicator that includes a message identifier that identifies the message
(VMS / SN session ID).
The listening call can be resumed after the call ends. Thus, as outlined briefly above, the present invention provides a message service
Callees who listen to messages left to them in the
Do not call the message server after the callback call to the caller.
It is advantageously possible to listen to the called party's message. That is, the called party
Calls another number to several different numbers during one message server session.
You can make a roll out. Further, the problems of the prior art described in this specification are solved by implementing the present invention.
it can. The present invention will be readily understood by reference to the description of preferred embodiments in conjunction with the accompanying drawings.
It should be possible. (Best Mode for Carrying Out the Invention) The present invention has been described in detail with reference to the drawings. FIG. 1 illustrates the communication network architecture and adaptation necessary to carry out the present invention.
It is a schematic block diagram of a severe component. For the specific embodiment described, an example
For example, mobile communication network architecture such as GSM network is selected
Have been. However, other network architectures may be utilized, as described above.
I.e., packet-switched networks and switches where switches are replaced by routers.
And / or voice over an IP network (Internet telephone network)
A similar architecture can be used. However, in the present invention, it is called an exchange.
The terms are intended to include the meaning of both switches and routers. For the sake of simplicity, the following description exemplifies the GSM network
The architecture is shown. To make a call to called party A, calling party C must use the air interface AIR-I /
Communicate with the base station subsystem BSS via F, and then the base station subsystem BS
S is a network switching subsystem via the interface AI / F
Communicate with NSS. The base station subsystem BSS includes at least one base station (FIG.
) And at least one base station controller (not shown). Base station subsystem and / or at least one base station subsystem controller
(Not shown) via the interface A / F, specifically the mobile service
Network disconnection with one of at least one switch such as switching center MSC
It communicates with the switching subsystem NSS. Of course, large areas and / or multiple subscriptions
In a network covering multiple users, multiple exchanges, ie, MSCs, are required.
It is provided for that purpose. However, in order to simplify the explanation and make it easier to understand
In particular, the present invention will be described with reference to only one exchange MSC. The exchange MSC, for example, via the interface VMS-I / F,
Communication with a message server such as a service server / service node VMS / SN. Thus, if caller C calls caller A, then subscriber A gets a call and
Responds, the signal flow should be indicated as C → BSS → MSC → BSS → A.
Can be. In contrast, callee A is busy or powers down the phone
If the call / terminal is not answered for any reason, such as
C can be notified. Next, the subscriber C sets up a message server V for the called party A.
The message can be left in the MS / SN. The signal flow in this case is roughly C
→ BSS → MSC → VMS / SN. Or, it is detected that
When a message is issued, the exchange MSC will automatically hold the message.
May be. Thereafter, at any point in time, the called party previously called is the message server VMS
Inquires / SN to see if there is any message left for the person
Can be confirmed. In this case, the flow of information is A → BSS → MSC → VMS / SN →
MSC → BSS → A. Therefore, the subscriber listening to the voice mail addressed to the person
A can directly call the caller who left the listening message without dialing the number.
Can initiate a callback. That is, if A tries to call back to C
, Call connects subscriber A to the message server from the message server
Is "dropped back" to the previous switch MSC included in the route, and then
The callback call is further connected to the caller C who made the call earlier. Conventionally, when a call is dropped back to the MSC,
Since the connection with the message server VMS / SN is released, the subscriber A is addressed to himself / herself.
To listen to the voicemail of
Needed to establish a new connection to the message server. The present invention and a novel communication between the switch and the message server as described herein
According to the numbering method, a call is made to the person who is listening to a message addressed to the person, such as a voice mail.
The called party makes a new call to the message server after making a call back to the calling party.
You can continue listening to messages without having to establish a call. This is described in more detail in connection with FIGS. FIG. 2 (FIGS. 2A and 2B) illustrates the subscriber and communication network element shown in FIG.
FIG. 1 illustrates a schematic signaling scenario of a signal transmitted to and from the
Show. In order to simplify the drawing and facilitate the description, the base station subsystem shown in FIG.
The stem BSS has been excluded here. However, it actually exists,
It is included in the "real" signaling. Furthermore, in FIG.
Network elements and subscribers, as well as the signaling scheme itself, are shown horizontally.
However, the time axis is shown in the vertical direction. Referring to FIG. 2A, in step S 1, the caller C determines that the exchange MSC (and the base
Attempt to call called party A via local station subsystem BSS (not shown)
You. In step S1a, it is detected that the called party A is disconnected. In response, in step S2, subscriber C sends a message to subscriber A (
(Not shown) to determine if you want to leave
Is notified to the subscriber C, or at the exchange MSC side, the calling party C
The possibility of leaving a message to the called party is automatically given to the VMS / SN. Me
The method of leaving the message on the message server is outside the scope of the present invention, so
In the following, the description will be simplified by merely schematically illustrating the signal flow. Thereafter, at any time, when the called party A called earlier starts communication,
In step S3, the subscriber A leaves the message server VMS / SN
Via the exchange MSC to listen for one or more messages that have been
Then, a listening call is started to the message server VMS / SN. like this
Then, the VMS / SN session is started and the call dropback function (C
DB function) is started. (Hearing the message as described in detail below
Note that it is assumed to start from the first number and advance one by one in order
I want to be. Next, in step S 4, a record of the message server VMS / SN is listened to.
It is detected whether any message to the subscriber has been recorded. Inspection
The message is shown to be executed on the message server side, but is executed on the exchange side.
It is also possible. In the former case, the corresponding control device is at least two
Network elements, but in the latter case the control unit
Will be located at and / or form part of the switch. Next, in step S5, the listening subscriber A sends a message of the stored message.
Get message information. In other words, one such message (if any
) Is transferred to the called party A. The message contains the caller's phone
The identifier of the caller C who called earlier, such as the number MSISDN or the name itself,
Both include voice mail messages. When this information is received,
Upon listening to the e-mail, the called party A calls back the calling party C who has previously called.
Whether they need to be checked (for example, depending on the content of the
And / or by the identity of subscriber C who left the message for called party A)
. If it is necessary to make a callback, in step S 6, the called party
Call, but the callback call is activated via the exchange MSC.
Is transferred to the message server VMS / SN. On the message server side
, The pointer is in the record of the recorded message immediately heard by called party A.
Item. When the callback call is invoked in this way, a message
On the server side, in step S7, the indicator, that is, the VMS service indicator is
Generated and sent to exchange MSC via VMS-I / F interface
. This indicator, that is, the VMS service indicator, is, for example, an ISUP (ISDN user).
The part is transmitted using a signaling method. When the transmitted indicator is received, the exchange cancels the listening call.
More precisely, beyond S3 there is a connection from subscriber A to the exchange MSC.
Furthermore, there is a connection from the exchange MSC to the message server VMS / SN.
Releasing the listening call can result in a connection from the exchange MSC to the message server.
Means that it is released. Next, in step S 9 (step S 9 a and step S 9 b),
Based on the (still) surviving connection between party A and switch MSC (step
Step 9a), a connection to the caller C who made the call earlier is established (step 9).
b). The connection between subscribers A and C is also called a callback call. Therefore, when a call is made to the subscriber C, the subscriber A makes a direct call
Can talk to him. When the conversation between subscribers A and C ends, call
The back call is released (step S10). But the callback call
There is another reason to cancel. For example, the telephone cannot be connected to the subscriber C (for example,
, Busy), a callback call cannot be established,
In this case as well, the callback call (trial) is canceled, and the process proceeds to step S10.
And the release reason is returned to the exchange MSC. In step S 11, the exchange reason transmitted on the exchange side is the VMS service.
Call drop-back release reason indicator of the status indicator (described in detail below)
Data (CDB release reason indicator). Ma
In addition, the VMS session indicator is written in the VMS service indicator parameter.
Will be included. Thereafter, in step S12, the message server
Session (VMS / SN session) is resumed (in step S7,
When the CDB format indicator of the transmitted VMS service indicator indicates "yes"
Is set to a value instructing the message server) in step S13.
The stored message record is updated. That is, in step S12
The reason for releasing the CDB sent to the indicator in the
I will be absorbed. In step S 14, the partition assigned to the called / listening subscriber
One or more messages recorded in the message server record in the
The presence or absence is detected, but these are called and the message server V
Root of successful callback call to caller leaving message to MS / SN
It is not labeled as acting as a basis. If such a message exists, the procedure returns to step S5,
Steps S5 to S14 are repeated. If a message exists, the message
The Sage Server session ends. That is, callee A calls him during one message server session.
A plurality of different numbers can be called for each caller who calls.
After a callback call is made to the caller who made the call earlier,
There is no need to make a new call to the message server. The data exchanged between the message server VMS / SN and the exchange MSC is:
This constitutes one aspect of the present invention. Therefore, for a better understanding of the present invention,
Refer to FIGS. 3 and 4 for examples of these data and possible data formats.
Will be explained. FIG. 3 shows a message record provided in the message server VMS / SN.
MESSAGE RECORD and one embodiment of the data stored therein
Show. All message records are partitioned into subscriber partitions. FIG.
, The partition of subscriber A is shown. Partition is
Identified by the caller's call number MSISDN (eg, MSISDN A)
Wear. In a more reliable method, a personal identification code such as a PIN number (personal identification number),
And / or combinations thereof and, if desired, in an encrypted form.
It may be an expression. In each such partition, the following data is stored in each data file:
Field. 1) Calling number (CALL No.) This indicates a calling telephone number. In the simplest system design, call number
Is related to the time the message was recorded in the record. For example, call
Number # 1 represents the oldest message and call number #N is the most recently recorded
Represents a message. Or, order the messages according to the priority of the registered messages.
Can be aligned. For example, a caller may find that his message is urgent (high priority).
), Normal importance (medium priority), or lower importance (low priority)
Degrees). As a result, the message
Reorder, if necessary, in combination with the recorded time, if necessary
Can be. 2) Caller Identifier (Caller ID (MSISDN) No.) This identifies the caller's identifier, for example, his telephone number (C1, C2,.
n) and used to establish a callback call. Also call
MSISD along with the subscriber's name to facilitate caller identification of the caller
The N number can be stored. In addition, the message is combined with the above-described sorting according to the registration time and / or priority.
In combination, it can be stored according to the subscriber's telephone number and / or name. 3) Message (MESSAGE) This is assigned to store a message left by calling party C to calling party A.
Indicates the memory area of the message record that is being displayed. The message is, for example, a voice mail
Message (VM1, VM2,..., VMn) or any other message described above.
Page. 4) Call Dropback Release Reason (CDB Release Reason Indicator) To enter this, the callback invocation was established and successfully executed
At least one indicator must be provided to indicate whether or not. That is,
Subscriber A listens to the voice mail addressed to himself from Subscriber C, and at the same time
A flag that indicates whether the rollback was successful is provided with a minimal solution
There is a need. Therefore, the most common system design encodes this information
1 bit is sufficient for example (e.g., "YES" = 1 means that after a successful callback)
Normal termination, "NO" = 0 indicates all other error reasons for callback failure
Represent). However, in more sophisticated system designs, depending on a number of reasons,
It is necessary to give a large number of bits to encode the information. Generally, 2 n Reason
In order to code the reason, n bits are given to code the “CDB release reason”.
Need to be The data entry items of the subscriber partition described in the items 1) to 3) are as follows.
Written when a message is recorded by caller C when caller A is not reachable
However, the data input items described in item 4) are
When the message record is updated at the same time as the
I will be absorbed. In another system design, “CDB release” = “YES” (the flag is
Input items such as "1") do not need to be written to the record,
The message to be sent is for each subscription in the message record of the message server
Callback is good because it can be deleted from the user partition
The number of messages in the record after the execution has been reduced can be continuously reduced. FIG. 4 shows the basic data format that can be used for transmitting the VMS service indicator.
Here is an example. As shown, the VMS service indicator comprises three fields,
Are further divided into subfields. A) VMS / SN Session ID “VMS / SN Session ID” is the value after the callback call is executed.
Identifies the session with the message server that will be returned. For this purpose
, The “VMS / SN session ID” field includes the subscriber ID field
, For example, the subscriber's telephone number MSISDN, such as MSISDN A. This addition
The subscriber ID is a pointer to the subscriber partition of the message record.
Represent. Further, “VMS / SN session ID” is a message ID, that is,
Contains the identifier of the message that was sent. For example, the message ID is the call number (
(Represented in connection with the description of FIG. 3). That is, the message ID is
This number in each subscriber partition (indicated by the subscriber ID)
Represents a pointer to the specific message to contain. B) CDB Release Reason Indicator This field is similar and / or identical to that described in connection with FIG.
. However, in step S7, the "VMS service indicator" of "CDB release reason"
This field of the indicator may be a data entry, or at least generally
Note that it does not include anything known and meaningless.
In FIG. 5 described below, such a data entry is referred to as "no indicator".
It is. C) CDB Format Indicator This call dropback format indicator is used when a callback invocation is established.
It is necessary to return to the message server VMS / SN after further release, and
And / or indicate whether it is possible. That is, the CDB format indicator is used in general system design.
Here, “return: yes” (for example, “1”) or “return: no” (
For example, coding may be performed using one bit indicating “0”). However, in a practical system design, “no indicator”, “non-monitoring CDB”
, "Monitoring CDB", or "CDB return".
May be assumed). When the corresponding information is received, then the exchange MS
C starts an appropriate operation according to the received information. For details, refer to the explanation of Fig. 5.
I will describe. The setting of the “CDB format indicator” in the practical system design described above
When incorporating the function of the present method into a work apparatus, it may be performed at the time of manufacture. However, when subscriber A sets his / her own service, the "CDB format indicator"
, Subscriber A's order to listen to messages left for him in VMS / SN
Accordingly, it can be set by VMS / SN. However, it is conceivable to adopt a “dynamic” setting of a kind of “CDB format indicator”.
This may be executed on the message server side prior to step S7. sand
That is, VMS / SN depends on the service that VMS / SN provides to subscriber A,
And depending on whether a message is left in the message server VMS / SN
, "CDB format indicator" may be determined. In connection with this, for example, the setting of the “CDB format indicator” corresponds to the data item described above.
Can be performed based on the following embodiment of the logic evaluation. "CDB format indicator" is current call number <maximum call number n
Or any of the "CDB release reason indicators in the (partition) record
Is "YES" when "" indicates "unsuccessful". (In the latter case ("OR" clause
) Contains a callback call for a previously unsuccessful callback invocation attempt
Retry of the call is brought in the flow). The “CDB format indicator” is: current call number = maximum call number n,
In addition, the “CDB release reason indicator” indicating “unsuccessful” is a record of the partition.
If it is not, the answer is “NO.” Of course, various modifications of the logic evaluation can be further considered.
The order of the indicators in the indicator is not limited to that of the example, but may be other data.
Data arrangement may be employed. Also, in step S12, "CDB format instruction
The "child" does not need to be sent back to the message server after evaluation, in which case the "designator"
A "None" value may be sent. FIG. 5 shows the actual format of the VMS service indicator,
The designator subfile is shown in detail. As shown in FIG. 5, the VMS service indicator may be used for future indicators if necessary.
Spare fields and / or spare bits used to provide data expansion potential.
Including For example, for a number of CDB release reasons that require encoding of a number of bits,
Coding may be required. The CDB format indicator consists of two bits and encodes four contents and / or meanings.
it can. Each is as follows. “00” represents “no indicator”, and the “no indicator” value is MSC-VMS /
The SN connection is re-established (see step S12 in FIG. 2B), the IAM (initial address).
Message) in the CDB format indicator. Call Dro
"No indicator" value exists in the REL (release) message that activates the callback function
Switch MSC operates as in the unsupervised CDB (see below).
However, in this case, there is no return to the VMS / SN connection. “01” represents “CDB without monitoring”, and according to the setting, the call is
After a call back call is initiated to caller C (the one who made the call earlier)
In any case, it does not return to VMS / SN. This is due to cost reasons, etc.
Wants network operators to incorporate the invention into their networks
This is a setting option when it is not possible. “10” represents “CDB with monitoring”, and a call is issued according to the setting.
The call back to caller C was not successful (e.g., CDB release
If the reason does not indicate successful completion of the CDB call), then return to VMS / SN. “11” represents “intelligent CDB” and is called according to this setting.
The call to the caller C is not successful and the call to the caller C is not successful.
If the back call is successful, return to VMS / SN. In addition, the CDB release reason is coded using 3 bits and up to 8 CD
It is possible to code the reason for releasing B. The actual format of the VMS service indicator shown
For the mat, five values are used. That is, “000” means “no indication” (the reason for releasing the CDB in the call-back call attempt).
Is determined, for example, is transmitted in step 7), and “001” indicates that, for example, due to the terminal being switched off,
The call cannot be made to caller C (not called back) who called earlier
"010" indicates that caller C is busy, ie, by another call and / or data transmission.
“100” indicates normal termination of the CDB, that is, successful establishment of a callback call.
For example, a successful call after subscribers A and C have conversed.
"111" indicates that the subscriber C is not on the call
No response to the pop-up attempt. [0059] Finally, the VMS session indicator is 8 to 28 bits with the content described above.
After the end of the (new) callback invocation, or
After the successful establishment of the callback call, the VMS / SN session is
Contains the subscriber ID and message ID needed to resume. As noted above, the present invention has been described primarily with reference to methods. But the book
The invention also relates to a corresponding control device for performing the method. This eye
In order to achieve the target, the control device, like the updating means, has a correspondingly improved listening.
Take / session release / CDB function activation means, detection means, acquisition means, callback
Call activation means, indicator transmission means, listening call release means, callback call
Outgoing establishment and release means, session resumption and indicator transmission setting means (shown in FIG.
Zu). [0061] These means also include a single network element such as a switch (MSC).
However, if appropriate, the means for configuring the control device should be at least
Also spans two communication network elements, for example, the exchange MSC and the
It may be provided separately in the message server VMS / SN. Thus, as explained above, the present invention is a method for cold communication in a communication system.
Propose a method of performing ropback, at least the communication system has at least two people
Between the subscribers (A, C), or one of the subscribers and a message server (VMS / S).
N) at least one switch (MSC) for switching the call to and from
The message server (VMS / SN) provides a plurality of destination messages to the called party (A).
Message records, and the previous messages
Recorded in the message server record from the caller (C) of
Sends the message via at least one of the at least one switch (MSC)
From the called party (A) to the calling party (C) based on the information recorded in the server record
Activating the callback call (S6);
Call, after the invoked callback call has finished,
(A) is set to be able to connect back to the message server (VMS / SN)
Stages. A corresponding control device and a network comprising the same device.
・ It proposes an element. The foregoing description and accompanying drawings are intended to be merely illustrative of the present invention.
Please note. Accordingly, preferred embodiments of the present invention vary within the scope of the appended claims.
It may be. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a communication network architecture and a suitable configuration required for implementing the present invention.
It is a schematic block diagram of a part. 2 comprises the subscriber and the communication network element shown in FIG.
FIG. 1 shows an outline of a signaling scenario of a signal related to the present invention transmitted to and from a client.
You. FIG. 3 is a message record provided in a message server and stored in the message record.
Here is a basic example of the data being stored. FIG. 4 shows one embodiment of a data format that can be used for transmitting a VMS service indicator.
Is shown. FIG. 5 shows the actual format of the VMS service indicator.

[Procedural Amendment] Submission of Translation of Article 34 Amendment of the Patent Cooperation Treaty [Submission Date] February 15, 2002 (2002.15) [Procedure Amendment 1] [Document Name to be Amended] Specification Subject item name] Claims [Correction method] Change [Content of amendment] [Claim 1] A method for performing call drop-back in a communication system, wherein at least the communication system At least one switch (MSC) for switching a call between two subscribers (A, C) or between one of said subscribers and a message server (VMS / SN), said message server (VMS / SN) is adapted to store a plurality of previous message records addressed to the called party (A), wherein the preceding message is stored in each of the calling parties (C) or (C). From the called party (A) based on information recorded in the message server record via at least one of the at least one switch (MSC). Activating a callback call to the caller (C) (S6), based on the activation of the callback call, causing the system to: The called party (
A) setting a state in which the message server (VMS / SN) can be connected to the message server (VMS / SN) in a reverse manner, wherein the setting step includes the step of calling the callback from the called party (A) to the calling party (C). Is completed, the message server (VM) is sent from the subscriber (A).
Sending the instructions necessary to reroute the call to the S / SN (S7)
) Wherein the indicator comprises a corresponding interface (VMS-I) from the message server (VMS / SN) to at least one of the at least one switch (MSC) before the callback call is released. / F). 2. Prior to the start-up phase, via at least one of the at least one switch (MSC),
1) establishing a listening call from the called party (A) to the message server (VMS / SN) (S3); and the calling party (C) in the message server record (VMS / SN). Detecting the previous recording of the message to the caller (A) (S4). 3. After the transmitting step, releasing the listening call (S8); and making the call from the called party (A) via at least one of the at least one exchange (MSC). (C) establishing a callback call to the caller (C)
9, S9a, S9b), based on the termination of the established callback call, based on the transmitted indicator, via at least one of the at least one switch (MSC), and (A) to the message server (VM
Reestablishing a listening call to the S / SN (S8) (S8). 4. When the established callback call is terminated prior to re-establishing the listening call, a call dropback indicating whether the callback call to the caller (C) was successful. 4. The method according to claim 3, wherein a release reason indicator is written to the indicator (S11). 5. The transmitted indicator may be an interface (VMS-I)
The method according to claim 1, wherein the transmission is performed using ISDN user part signaling (ISUP) via / F). 6. The message server (VMS / SN) at least after a callback call is completed.
A) a call drop-back type indicator to indicate whether the listening call needs to be re-established; and a call drop to indicate whether the callback call to the caller (C) was successful. A message server including a back release reason indicator, a subscriber identifier and a message identifier of the called party (A) being listened to, and by means of which the listening call can be resumed after the end of the callback call. The method according to claim 1 or 3, comprising: a session indicator. 7. After writing the release reason indicator in the indicator, the indicator is sent from the exchange (MSC) to the message server (VMS / S).
The method according to claim 4, further comprising the step of: (S12) transmitting the message record to the N); and updating the message record in the message server using information included in the indicator (S13). The described method. 8. A control device for performing call drop-back in a communication system, wherein the control device executes the method according to claim 1. Description: 9. The control device according to claim 8, wherein the control device is distributed over at least two communication network elements (MSC, VMS / SN). 10. A communication network element comprising the control device according to claim 8. 11. The method according to claim 1, wherein the indicator (S7) is delivered before establishing the callback call.

────────────────────────────────────────────────── ─── Continuation of front page    (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, I T, LU, MC, NL, PT, SE), OA (BF, BJ , CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, K E, LS, MW, SD, SL, SZ, TZ, UG, ZW ), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, C R, CU, CZ, DE, DK, DM, EE, ES, FI , GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, K Z, LC, LK, LR, LS, LT, LU, LV, MA , MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, S K, SL, TJ, TM, TR, TT, TZ, UA, UG , US, UZ, VN, YU, ZA, ZW (72) Inventor Clint Yuhani             Finland FFIEN-02150 D             Spoo Keila La Dentier 4 Noki             A Networks Osaka Snow               Inside (72) Inventor Luo Terror             Finland FFIEN-02150 D             Spoo Keila La Dentier 4 Noki             A Networks Osaka Snow               Inside (72) Inventor Taponen Matti             Finland FFIEN-02150 D             Spoo Keila La Dentier 4 Noki             A Networks Osaka Snow               Inside (72) Inventor Kallio Seppo             Finland FFIEN-02150 D             Spoo Keila La Dentier 4 Noki             A Networks Osaka Snow               Inside (72) Inventor Mekinen Ilkka             Finland FFIEN-02150 D             Spoo Keila La Dentier 4 Noki             A Networks Osaka Snow               Inside (72) Inventor Mattson Patrick             Finland FFIEN-02150 D             Spoo Keila La Dentier 4 Noki             A Networks Osaka Snow               Inside (72) Inventor Juha Lampinen             Finland FFIEN-02150 D             Spoo Keila La Dentier 4 Noki             A Networks Osaka Snow               Inside (72) Inventor Asco Coyvla             Finland FFIEN-02150 D             Spoo Keila La Dentier 4 Noki             A Networks Osaka Snow               Inside F term (reference) 5K015 AB02 AF08 GA02                 5K024 BB05 GG01

Claims (1)

  1. Claims: 1. A method for performing call drop-back in a communication system, wherein at least said communication system is between at least two subscribers (A, C) or of said subscribers. At least one switch (MSC) for switching a call between one and a message server (VMS / SN), wherein said message server (VMS / SN) is addressed to a called party (A); Storing a plurality of previous message records, wherein the previous messages are recorded in the message server record from respective callers (C), the method comprising: The called party (A) based on the information recorded in the message server record via at least one of the three exchanges (MSC) A step (S6) to start a callback call to said caller to (C), based on the start of the call-back call, the system, after completion of the initiated callback call, the called party (
    A) setting up a state in which the message server (VMS / SN) can be connected in reverse. 2. The method according to claim 1, further comprising the step of: after the call-back call from the called party (A) to the calling party (C) is completed, from the subscriber (A) to the message server (VMS / SN). ), Sending an indication necessary to re-route the call to the at least one message server (VMS / SN).
    The corresponding interface (VMS-
    2. The method according to claim 1, wherein the transmission is performed via an I / F). 3. Prior to the start-up phase, via at least one of the at least one switch (MSC),
    1) establishing a listening call from the called party (A) to the message server (VMS / SN) (S3); and the calling party (C) in the message server record (VMS / SN). Detecting the previous recording of the message to the caller (A) (S4). 4. The step of releasing the listening call (S8) after the transmitting step; and the calling from the called party (A) via at least one of the at least one switching center (MSC). (C) establishing a callback call to the caller (C)
    9, S9a, S9b), based on the termination of the established callback call, based on the transmitted indicator, via at least one of the at least one switch (MSC), and (A) to the message server (VM
    Reestablishing a listening call to the S / SN (S8) (S8). 5. The call drop-back indicating whether the callback call to the caller (C) is successful when the established callback call is terminated prior to the re-establishment of the listening call. The method according to claim 4, wherein a cancellation reason indicator is written in the indicator (S11). 6. The transmitted indicator may be an interface (VMS-I)
    3. The method according to claim 2, wherein the transmission is performed using ISDN user part signaling (ISUP) via / F). 7. The message server (VMS / SN) at least after a callback call is completed.
    A) a call drop-back type indicator to indicate whether the listening call needs to be re-established; and a call drop to indicate whether the callback call to the caller (C) was successful. A message server including a back release reason indicator, a subscriber identifier and a message identifier of the called party (A) being listened to, and by means of which the listening call can be resumed after the end of the callback call. The method according to claim 2 or 4, comprising: a session indicator. 8. After writing the release reason indicator in the indicator, the indicator is sent from the exchange (MSC) to the message server (VMS / S).
    The method according to claim 5, further comprising the step of: (S12) transmitting the message record to the N), and the step of: (S13) updating the message record using information included in the indicator in the message server. The described method. 9. A control device for performing a call drop-back in a communication system, wherein the control device executes the method according to claim 1. Description: 10. The control device according to claim 9, wherein the control device is distributed over at least two communication network elements (MSC, VMS / SN).
    The control device according to claim 1. 11. A communication network element comprising the control device according to claim 9.
JP2001547835A 1999-12-20 1999-12-20 Method and apparatus for executing call dropback in a communication network Pending JP2003518828A (en)

Priority Applications (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
JP2003518828A true JP2003518828A (en) 2003-06-10

Family

ID=8167539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001547835A Pending JP2003518828A (en) 1999-12-20 1999-12-20 Method and apparatus for executing call dropback in a communication 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010530683A (en) * 2007-06-20 2010-09-09 アルカテル−ルーセント Method and apparatus for setting a callback by a user receiving a media stream

Families Citing this family (3)

* Cited by examiner, † Cited by third party
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2142890C (en) * 1992-08-26 1999-03-09 Drina C. Yue 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010530683A (en) * 2007-06-20 2010-09-09 アルカテル−ルーセント Method and apparatus for setting a callback by a user receiving a media stream

Also Published As

Publication number Publication date
EP1243123A1 (en) 2002-09-25
WO2001047228A1 (en) 2001-06-28
CA2395150A1 (en) 2001-06-28
AU3040600A (en) 2001-07-03
WO2001047228A8 (en) 2002-11-07

Similar Documents

Publication Publication Date Title
US9036801B2 (en) Enhanced call return in a communications network
US8611863B2 (en) Instant video and voicemail messaging method and means
AU695947B2 (en) Remote access telephone control system
EP1519526B1 (en) Unified messaging server and method integrating multimedia messaging service functions and legacy handsets
KR100503869B1 (en) System and method of forwarding data calls in a radio telecommunications network
US7035385B2 (en) Method and system for screening calls during voicemail messaging
US7031703B1 (en) System and method of communicating operating capabilities in a telecommunication network
AU748197B2 (en) On-line notification in a mobile communications system
US7289616B2 (en) User-configurable call answering/redirection mechanism
EP1113655B1 (en) Call features for automatic call distribution system
DE69534153T2 (en) Method and arrangement for retrieving a talk to a mobile station
KR100828210B1 (en) Mobile voice mail screening method
US6169796B1 (en) Call rerouter method and apparatus
US5905774A (en) Method and system of accessing and operating a voice message system
US8046470B2 (en) Method and system for incoming call notification
CA2050377C (en) Method of voice mail notification for cellular telephone systems
US6850604B2 (en) Method and system for sending a data message to a calling phone while communicating with a first phone
US8515396B2 (en) Method and system for providing presence information using ringback tone
CN1092910C (en) System and method for selectively accepting telephone calls without establishing voice communication
CA2220707C (en) Method and apparatus for data network call processing
US6311057B1 (en) Method of calling a mobile station in a mobile telephone system
CN100508660C (en) Dropped call continuation
ES2340850T3 (en) Finished call control for mobile phone subscriber itinerance.
AU640410B2 (en) Call completion system
US6999572B1 (en) Automated call connection system

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050825

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050905

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20060213