JPH0470046A - Caller identifying method - Google Patents

Abstract

PURPOSE:To ensure the finer identification of a caller by identifying the caller based on plural information elements included in a call setting message which is transmitted from an ISDN network to each terminal at incoming. CONSTITUTION:An outgoing No. individual information table T1 is set at an incoming terminal together with an outgoing subaddress individual. information table T2, and 8 combination information table T3 where the information on both tables T1 and T2 are combined with each other. When a call setting message is received from an ISDN network, the outgoing No. information elements and the outgoing address information elements included in the received message are compared with the table T3 by reference to both tables T1 and T2 set at the incoming terminal. If the coincidence is obtained from the comparison, the identified incoming is granted and the incoming transfer service is carried out. Meanwhile the identified incoming is rejected if no coincidence is obtained. Thus the caller of the called party can be accurately identified.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to automatic private branch exchanges, key telephone devices, various telephone terminals, etc. that connect an I5DN network.
This invention relates to a method for identifying a caller using information sent from a network at the time of incoming call.

BACKGROUND OF THE INVENTION Conventionally, such caller identification has been performed using l5DNJI! ] This is a service that notifies the L5DN network whether the call sent from the terminal can be accepted at the terminal (identified call acceptance) or forwarded to another terminal (identified call forwarding). . Conventional caller identification is
This was done by using only the calling number information element in the call setup message sent when a call was received from the NI. The call setup message is defined in TTC standard JT-Q931r l5DN.
User/Network I> A message defined in Tough Ace Layer 3 Specification-1 that is sent when a user indicates a call to a network or when a call is received from a network to a user, and is determined by the types of terminals of the caller and receiver ( (telephone, facsimile, etc.), numbers, and other information elements.

Problems to be Solved by the Invention However, in the conventional identification call acceptance and identification call forwarding services, the caller is identified only by the calling number information in the call setup message sent when receiving a call from the 15DN network. There was a problem in that it was not possible to perform identification with high accuracy. For example, even if the caller's calling number information is the same, if the communication capability information that identifies telephone and non-telephone systems in the call setup message is different, the call cannot be received, so in that case, the call can be rejected by identification. must send a message.

The present invention solves these conventional problems, and provides caller identification that allows more detailed caller identification by allowing a receiving terminal to freely combine and set a plurality of information elements. The purpose is to provide a method.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides information on the calling number, the called number, the calling sub-address, the called sub-address, as well as the transmission ability,
The caller is identified by arbitrarily combining information elements such as high layer compatibility and low layer compatibility and comparing them with the information elements in the call setup message actually sent from the I5DN network when the call is received. This is what I did.

Therefore, according to the present invention, the called terminal can identify the caller with higher accuracy by arbitrarily specifying the information elements in the call setup message sent from the 15DN network to identify the caller. This has the effect that services such as automatic private branch exchanges, pushbutton telephones, recognition of incoming calls at other terminals, and forwarding of identified calls can be used more effectively.

Embodiment FIG. 1 shows nine examples of information elements of a call setup message at the time of incoming call transmitted from the 15DNI. In Figure 1,
1 is a protocol identifier used to identify the protocol specification that defines the call control message, 2 is a call number used to identify multiple calls on one signaling channel, and 3 identifies the type of message being sent. 4 is the transmission capability to identify the type of terminal on the caller's side, for example, whether it is a voice call type or a data communication type, and 5 is a channel to identify the information channel number. identifier, 6 is a progress identifier for notifying access to an analog network and notification of tone provision, 7 is a calling number indicating the number of the caller, 8 is a calling sub-address indicating the sub-address of the caller, 9 is the destination of the call. The number 10 is the sub-address of the destination, and 11 is user-user information indicating information between users. In this embodiment, a case will be described in which a caller is identified using information elements such as a calling number 7 and a calling subaddress 8.

Next, the operation of this embodiment will be explained. First, a calling number individual information table T1 and a calling subaddress individual information table T2 as shown in FIG. 2 are set in advance at the receiving terminal, and then a combination information table T3 that combines these
Set. The calling number individual information table T1 compares the name of the invention with the calling number, and the calling subaddress individual information table T2 compares the name of the other party with the calling address. The combination information table T3 is a combination of the calling party's calling number and calling sub-address, and depending on the calling party, there may be no calling sub-address.

Now, when a call setup message is sent from the 15DN network, the calling number information element and the calling address information element therein are compared with the combination information table T3 while referring to the individual information tables T1 and T2 set by the receiving terminal. If both match, a service of identification call acceptance or call transfer will be provided. If even one of the numbers does not match, the incoming call is identified and rejected. Therefore, the originator of the other party can be accurately identified.

In the implementation IPJ described above, the caller is identified using the calling number and calling sub-address, but if the transmission capability information element is used in addition to this, even if the calling number and the calling sub-address match, the transmission capability can be identified. If the information elements are different, services such as identifying and rejecting the call or changing the forwarding destination can be provided.

Effects of the Invention As is clear from the embodiments described above, the present invention allows the receiving terminal to permit the call or to transfer the call to another terminal by using the calling number in the call setup message sent from the 15DNJI8 at the time of receiving the call. This is done by identifying the caller based on not only the information element but also multiple information elements, so even if the same caller number information element is received, if the communication ability is different, the call may be rejected or forwarded to different destinations. It has the advantage that it can be made variable. In addition, since the receiving terminal can create its own combination of information elements such as the calling number and the calling 4F Guatus, each receiving terminal can create its own judgment conditions for identifying the caller. It has this effect.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of the format of a call setup message sent from an l5DN in an embodiment of the present invention, and FIG. 2 is a diagram showing an example of an individual information table and FIG. 3 is a diagram showing a combination information table. 1...Protocol identifier, 2...Call number, 3...Message type, 4...Transmission capability, 5...Channel identifier, 6...Progress identifier, 7...Calling number, 8... - Calling sub-address, 9... Calling number, 10... Calling sub-address, 11... User-user information, T1... Calling number individual information double, T2... Calling sub-address individual information full, T3... Combination information Element Daple.

Claims (1)

[Claims] When performing identification call acceptance or identification call forwarding service using the incoming call information sent from the ISDN network, the I
A caller identification method that identifies a caller based on multiple information elements in a call setup message sent from an SDN network to each terminal when a call arrives.