JPH02142265A - Isdn exchange - Google Patents

Abstract

PURPOSE:To use a same additional service system and to present all additional service by receiving a signal, which is inputted for the execution of the additional service by an ISDN subscriber, by a D channel, converting the signal, which is shown by a such a message, to a signal to be applied to the additional service and transferring the signal to the additional service system. CONSTITUTION:For example, in the case of catch-phone service, when an ISDN subscriber 4 calls with a subscriber A, a second calling tone is incoming and it is informed that there is the other incoming call, if the ISDN subscriber 4 executes hooking, the D channel message of this hooking signal is received by a D channel processing part 5 and in a central processing unit, the hooking signal is transferred to an ISDN signal processing part 7. Then, the hooking signal and the telephone number of the ISDN subscriber 4 are inputted to an additional service processing part 2. The additional service processing part 2 holds the incoming call from the subscriber A and connects the new incoming call to the ISDN subscriber 4. Thus, all the additional service presented to an analog subscriber can be presented to the ISDN subscriber by respectively using the same additional service system.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an ISDN exchange, and more particularly to telephone supplementary services for ISDN subscribers.

[Prior Art] Conventionally, there are a wide variety of supplementary services that can be provided to analog subscribers, and in order to execute these supplementary services, it is necessary to use the telephone line to which the subscriber is connected. Hooking signals and dialing signals were done manually. On the other hand, in the interface between the 15DN subscriber and the exchange, all control signals other than calls are sent via D channel messages to the ISDN subscriber processing equipment, so supplementary service processing is not for analog subscribers. This had to be done using different supplementary service processing methods.

[Problem to be solved by the invention]

In the conventional ISDN switch described above, the additional telephone services provided to analog subscribers are processed by analog signals sent via telephone lines.
Signals are sent and received using D channel messages, and D channel messages for hooking signals are sent to CCITT.
ISDN subscribers have the disadvantage that the supplementary service processing applied to analog subscribers cannot be applied as is, as this provision is not in the regulations.

[Means to solve the problem]

The ISDN exchange of the present invention includes means for receiving and identifying signals for using various additional services transmitted by ISDN subscribers on the D channel, and identifying signals for using the various additional services. ISDN signal processing that converts the signal into a signal similar to the signal transferred to the supplementary service processing unit based on the signal sent by the analog subscriber via the telephone line for using various supplementary services, and transfers the signal to the supplementary service processing unit. It has a department.

[Effect]

I Receives and identifies the signal manually generated by the SDN subscriber to use the supplementary service via the D channel, and sends the signal indicated by the message to the supplementary service processing system that provides the supplementary service to the analog subscriber. Since the signals are converted into signals that can be used for the supplementary service processing and transferred, all supplementary services provided to analog subscribers can be transferred to ISDN subscribers using the same supplementary service system as for analog subscribers. can be provided to

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a functional block diagram of essential parts of an embodiment of an ISDN exchange according to the present invention.

The central processing unit 1 performs general call processing including additional telephone services for analog subscribers 3 and ISDN subscribers 4 accommodated in this ISDN exchange. The analog signal processing unit 6 receives an input signal for executing an additional service sent from the analog subscriber 3 via the communication path,
The signals are arranged into signals necessary for supplementary service processing (signal indicating supplementary service, originating subscriber number, receiving number, etc.) and transferred to supplementary service processing section 2. The additional service processing unit 2 performs control processing corresponding to each type of additional service. I
The SDN subscriber processing device 8 has a D channel processing section 5,
An interface between the I SDN subscriber 4 and the exchange, which monitors the status of the I SDN subscriber and sends and receives control signals between them using D channel messages. Sending and receiving, B
Connect channels as speech paths. The I SDN signal processing unit 7 receives the signal for executing the supplementary service sent in the D channel message via the ISDN subscriber processing device 8, converts it into a signal corresponding to the corresponding supplementary service, and processes the supplementary service. Transfer to Section 2.

Next, the operation of this embodiment will be explained.

Now, we will explain the call waiting service as an additional service. Assume that ISDN subscriber 4 has subscribed to a call waiting service and hears a second ring tone while talking with subscriber A, informing him that there is an incoming call from someone else. When the I SDN subscriber 4 hooks the interlocutor A with a request for hold, the D channel message of the hooking signal is received by the D channel processing unit 5 and is processed in the central processing unit 1.
The signal is transferred to the 5DN signal processing unit 7. The ISDN signal processing unit 7 inputs the hooking signal indicating the call waiting service and the telephone number of the ISDN subscriber 4 to the additional service processing unit 2. The supplementary service processing unit 2 puts the incoming call from subscriber A on hold and connects a new incoming call to ISDN subscriber 4.

In addition, in the case of trio phone service, the hooking signal input by the ISDN subscriber is transferred to the ISDN signal processing unit 7, as in the case of call waiting, and the ISDN signal processing unit 7 converts the hooking signal (call waiting) indicating the trio phone service. (The service cannot be received at the same time) and the telephone number of the 15DN subscriber 4 are input into the additional service processing section 2. The supplementary service processing unit 2 connects the second dial tone to the ISDN subscriber processing unit 8 according to the input signal. ISDN subscriber processing unit 8 sends the second dial tone from D channel processing unit 5 to ISDN subscriber 4 as a D channel message. ISDN
When the subscriber 4 sends out the third party's telephone number in response, it is received by the ISDN subscriber processing unit 8, and this dial signal is transferred to the ISDN signal processing unit 7 within the central processing unit 1. (2) The SDN signal processing unit 7 transfers the dial signal to the supplementary service processing unit 2, and the supplementary service processing unit 2 performs a predetermined call processing to make multiple connections to the ISDN subscriber 4.

In addition, when dialing a specific number first such as a transfer service, the central processing unit 1 identifies the content of the additional service from the specific number and sends the corresponding number to the 15DN signal processing unit 7.
The received signal of the 5DN subscriber processing device 8 is transferred. IS
The DN signal processing unit 7 inputs a signal indicating the content of the additional service and the subscriber number to the additional service processing unit 2. The supplementary service processing unit 2 connects the second dial tone to the ISDN subscriber processing unit 8, registers the telephone number of the ISDN subscriber 4 in a predetermined storage device, and receives, for example, the telephone number of the ISDN subscriber 4 in the same manner as in the triophone. Then register the forwarding number.

(Effects of the Invention) As explained above, the present invention allows an ISDN subscriber processing device to receive a signal inputted by an I5DN subscriber to execute an additional service via the D channel, and convert the signal indicated by the message into an analog subscriber. All supplementary services provided to analog subscribers can be converted to signals applied to the supplementary service processing and transmitted to the supplementary service processing system that provides supplementary services to analog subscribers. This has the advantage that it can be provided to I5DN subscribers using the same additional service system as .

[Brief explanation of the drawing]

FIG. 1 is a block diagram of essential functions of an embodiment of an I5DN exchange according to the present invention. 1...-Central processing unit, 2----Additional service processing unit, 3-----Analog subscriber, 4-----ISDN subscriber, 5-----D channel processing unit, 6 --------Analog signal processing section, ? -, 15DN signal processing unit, 8--ISDN subscriber processing unit.

Claims (1)

[Claims] 1. In an ISDN exchange that accommodates analog telephone subscribers and ISDN subscribers and provides various additional services to the analog telephone subscribers, in order to use various additional services sent by the ISDN subscribers. means for receiving and identifying the signals on the D channel, and after identifying the signals for using the various additional services, converting the signals into signals for using the various additional services transmitted by the analog subscriber via the telephone line. An ISDN exchange characterized in that it has an ISDN signal processing section that converts the signal into a signal similar to a signal transferred to the supplementary service processing section and transfers it to the supplementary service processing section.