Simultaneous call delivery at multiple telecommunication network accesses

The invention relates to a method for call delivery to a called subscriber in one or more telecommuni nication (= TK) networks.

Such a process is known for example from the US 5,592,541.

Telecommunication users are nowadays due to the generally increased Mobility often no longer predominantly or continuously at a single telecommunications terminal reachable. So suggests z. B. the DE 44 40 500 A1 describes a communications system, in which, after Removing a cordless terminal from an associated Cradle automatic activation of a Diversion of a corded to cordless Terminal is provided. Particularly in connection with Mobile radio systems is described in DE 38 43 870 A1 a method for Call forward provided a mobile radio station, in which call forwarding from a first mobile radio terminal is unoccupied at the time of calling or not calling will answer to another, any mobile Radio station occurs when the mobile radio station or TK-participants in the Funküberleiteinrichtung own Phone number and the Forward number of other mobile has received radio station.

New techniques also make it possible for terminals. B. means a smart card "for to take possession of" and for this Time to use as a private connection. This can cause result that a telecommunications subscriber several at a time has access to various networks. In DE 37 32 109 A1 For example, a telephone switching system proposed, in which the current location of a telecommunications Operator detected by a code card and a reputation for these PBX subscriber to a terminal in its vicinity is forwarded.

Frequently today possess TK participants but also next to a Connection to one or more fixed networks and a terminal to a mobile network. A method for call forwarding between landline and mobile network are, for example, in EP 0683589 A2 or described in DE 41 40 974 A1. Even with the telecommunication networks same type (landline or mobile) to the networks different operators differ from the technology, so that to at an entrance of the same subscriber different networks at a call forwarding problems may occur.

In DE 44 30 343 A1 discloses a method for calling a described telephone operator, in which for a telephone line defining a hunt group of telephone lines and Receiving a particular telephone line call a called line of the hunt group and a specific Response time is awaited. If the affected phone this time is not removed, is the call to another Phone line hunt group are passed, so until the called telecommunication subscriber to one of the lines answers the call. Thus, there is an automatic Diversion to a predetermined sequence of selectable lines of a hunt group.

From the above-cited US 5,592,541, finally, is a Method, in which after the party to be called TK Participants pre-determined list for his phone number incoming calls successively to his desired other Te lefonnummern be forwarded, namely so long until the called TK-participants at one of the numbers of List belonging TK terminal accepts the call or the calling subscriber interrupts the call. Here, the Routing list for successive call offering for un ferent times be designed differently.

Allen described above known processes however have in common that a called telecommunication subscriber which to several accesses a or owns several telecommunication networks, not simultaneously at each of its Network access can be achieved. At best, a Incoming call successively to different network accesses passed, but this significant time delays may result, especially if the called PABX extension is busy would be reached on the last connection of the routing list so that the calling subscriber may TK before Reaching the called telecommunications operator gives up his plan and the reputation of interrupts.

Object of the present invention contrast, it is a present method for call delivery, in which an inserted budding reputation simultaneously at several different telecommunications Netzzu transitions of the called telecommunications operator is offered, so that no greater time delay by a successive execution the routing list occurs.

This object is in a surprisingly simple and effective way solved by the called PABX subscribers of several different Network access has, of having the same number a calling telecommunications subscribers are reachable, and that a call at Selecting this single contact number by the calling telecommunications Participants in parallel to multiple network access of the called telecommunications is forwarded subscriber.

This is the accessibility of the called telecommunications operator substantially improved since it his all Netzzu crossing points at any time due to the simultaneous call Delivery is available. Opposite a successive Abar processing a predetermined routing list comes the cry much faster to the called destination subscriber.

In a particularly preferred variant of the invention Procedure is in acceptance of the call by the called telecommunication Participants at one of its network access by a corresponding Confirmation of simultaneously pending call to his other Network access triggered. Thereby, the lines to the remaining network access free.

In a further preferred variant of the method is pre- see that the called telecommunication subscriber all of its Network access group can choose, in which the parallel Call Offer by dialing a single number by is to be a calling telecommunications subscribers. Thus, the Target participants its accessibility via a specific unified number to his all network access to established his own criteria to a selected Restrict group. This group could also different Times, such as day and night or on weekdays and holidays are chosen differently.

Particularly advantageously, the novel process can Insert if the called telecommunication subscriber, a service provider is and depending on the service offered automatically particular group of samtlichen network accesses the called telecommunications Participant is selected for a parallel call delivery, the corresponding service actually supports.

Advantageously, the parallel call delivery after inventive process service feature of IN (= Intel be ligent Network) service, either by a network operator or a company engaged in the network service provider Network participants will be offered.

In an advantageous development of this method variant is the service feature "parallel call delivery" when selecting the ordinary number of the called PABX operator activated. Thus the calling PBX participants need to build a connection with the called destination subscriber only to remember the normal number or this a Information service or the phone book query.

Alternatively, the service feature "parallel call delivery" at existing dialing an additional service code composite number can be activated as well as the ordinary number of the called PABX operator. Thereby can the caller itself between the option "Call delivery to a specific network access" and "parallel "Select. For the service feature" call offering parallel Call Offer "could then possibly additional fees when calling subscriber traffic.

Particularly advantageous method of the invention is, if the telecommunications networks to which the called telecommunication subscriber has access, technically different telecommunications networks, in particular fixed networks and Mobile networks have been implemented. This is the accessibility of the called destination subscriber via different telecommunications networks and various network technologies involved substantially improved.

Advantageously, the inventive method is so be constructed so that a call of a calling telecommunications subscriber to the called telecommunications subscriber initially via a first "setup Message "to a point in the telecommunications network, preferably a Switching center is built up on which the par for the allelverzweigung the call to the different network accesses the called telecommunications operator required information is present can be or accessed, and that the call from there - also via telecommunications networks of different operators and different Network technologies involved - to the network access of the called telecommunications Participant over another "Setup Message" parallel is forwarded.

In a further preferred process variant, finally , the call set-up according to the "call drop-back" procedure be carried out and in particular already happened a Parallel also a Exchange are returned to the call set-up tree to optimize.

Further advantages of the invention will become apparent from the Be and the drawing. Also, the above mentioned and inventions the features further listed tion according to either individually or collectively in be arbitrary combination be used. The illustrated and Described embodiments are as exhaustive understand enumeration but rather have exemplary Character for describing the invention.

The invention is illustrated in the drawing and is based an embodiment explained in more detail. Show it:

<b>Fig.</b> 1 is a schematic representation of an exemplary Network configuration for use of the invention process;

<b>Fig.</b> 2a shows a possible variant of the invention Ver connection setup in a network configuration to <b>Fig.</b> 1; and

<b>Fig.</b> 2b triggering the on the other network access standing call for acceptance of the call to a network access according to parallel call delivery <b>Fig.</b> 2a.

In <b>Fig.</b> 1 is an example configuration illustrated in which If a called party B each have a network connection to a landline <b>1</b> an operator I by a terminal <b>11</b>, to a landline <b>2</b> an operator II by a terminal <b>12</b> and to a mobile network <b>3</b> an operator III by means of a mobile phone <b>13</b> owns. The toll<b>1</b> communicates with the fixed network <b>2</b> and with the mobile network <b>3</b> each over a signaling network, for example, a # 7 line, in conjunction. Another telecommunications subscriber A, in the example shown an access to the fixed network <b>1</b> possesses, tries on his telecommunications terminal <b>10</b> a build communication relationship to TKTeilnehmer B.

The rest of the connection structure according to the inventions to the invention method for parallel Rufumstellung's <b>Fig.</b> shown 2a. Here, the service feature "parallel Call Offer "for either the called telecommunications subscriber B fixed be adjusted, in which case usually his "ordinary" Telephone number should be used, or it may be a Service code from the calling telecommunications subscriber A explicitly selected will.

The call is a first "Setup Message" setup 1 to a point in the fixed network <b>1</b> constructed on which the Ver for branching of the call to the different network accesses of ge called PABX operator B is present necessary information or at least can be accessed. This is usually a Exchange LE or other network node to be. From there, the call, also through various other networks Operators and different technologies involved means another setup message setup 2 to the various Network access of the called telecommunications operator B forwarded.

However, the TK-subscriber B can also parallel call delivery restricted to a particular group of its network access. one particular for the case that the called telecommunication subscriber B Service provider is, he could be the parallel call delivery only be done to those terminals that service those really support that through the phone to be requested by the calling telecommunications subscriber A is selected. This decision can be either automatic already take place either in the network or in the terminal be taken of the called telecommunications operator B itself.

The parallel call delivery of the invention may in particular his service feature an IN (Intelligent Network) service and by setting appropriate parameters, the above services include options described.

Has the called telecommunication subscriber B to call on one of best adopted Henden or selected network access, this is how in <b>Fig.</b> 2b, via the corresponding message "Connect" to the initiating unit which the "parallel Call Offer "adrift returned. In the illustrated case game this was an exchange LE in the fixed network <b>1</b>,

From there, now the parallel pending calls to the other network access, where the called telecommunication subscriber B just is not, in the example shown to the terminals <b>11</b> and <b>12</b>, Triggered by a release message.

To optimize the structure of call-tree can using the Call- Drop-back process, a call to a board to be Network access are also returned to exchanges LE, which have already happened for the first time during call setup.