JPS6041501B2 - Pre-communication information delivery method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system for transmitting information to an exchange terminal, and more particularly to an envelope consisting of a periodic array of signal bits and a plurality of data bits.

The present invention relates to a communication advance delivery method in a switching network accommodating terminals using the transmission method. In the past, when a call was received from a mobile phone to an idle terminal, only a side call display such as Bell Aoshima Dou was displayed, and no additional information other than this could be sent to the terminal. There was a drawback that after receiving information from the exchange, it was not possible to perform an exchange service in which it was determined whether the terminal responded or not.

In order to eliminate these drawbacks, the present invention inserts an additional bond at the time of call reception in the transmission and reception of signals between terminal exchanges from call reception to response. do. FIG. 1 shows the correspondence between the terminal interface lines, that is, the T line, C line, R line, and 1 line, the envelope format on the transmission line to the exchange, and the envelope format on the reception line from the exchange. That is, the control from the terminal is exchanged via the line termination device for the T line and data bit 12, and the control from the terminal is exchanged for the C line and signal bit 11, respectively. Similarly, the information from the exchange loop is exchanged via line termination equipment, with data bits 21 on the R line and signal bits 22 on the 1 line. The operation of an exchange receiving a call to an idle terminal and simultaneously transmitting a spring call display and additional information to the terminal will be described.

FIG. 2 is an embodiment of the present invention, and shows the time-series changes of the terminal interface lines, that is, the T line, the C line, the R line, and the 1 line at the time of an incoming call. In an empty terminal, the R line is level 1 and the 1 line is off.

When a call is received from the exchange to the terminal, an additional information character is sent in which data bit 21 is preceded by an appropriate number of SYN characters. These characters are sent out directly on the R line. Furthermore, if the BEL character is transported while maintaining character synchronization, it will be sent as is on the R line, and the brown call display and additional information will be delivered to the terminal. This additional information can be determined and a response can be made on the terminal side as necessary.

The embodiment shown in Fig. 2 above displays an incoming call and delivers additional information while the 1st line is off, but the embodiment shown in Fig. 3 shown below delivers additional information when a call arrives. If 1
By changing the lines, identification on the terminal side is made easier, for example.

In FIG. 3, when a call is received from the exchange to the terminal, data bit 21 is preceded by an appropriate number of SYN characters, and at the same time signal bit 22 is changed from 0 to 1.

This change turns on the 1st line, and the terminal side can know that this is an incoming call with additional information, unlike a normal incoming call. Following the SYN character on the data bit 21, the additional information character and the BEL character are sent out in the same way as in the embodiment shown in FIG. One method is to change the 1 line or signal bit 22 from an on state to an off state at the same time that data bit 21 changes from a BEL character to a SYN character after a terminal response.

Alternatively, the on state may be changed to the off state after a certain period of time. In short, it is sufficient if a change in one line can be detected on the terminal side.
As explained above, the present invention has the advantage that additional information can be sent to an idle terminal at the same time as the exchange calls the terminal, and the terminal side can respond after determining the additional information. etc. can be easily implemented.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the correspondence between terminal interface lines and envelopes sent and received from the exchange, FIG. 2 is a diagram showing changes in the terminal interface lines when a call is received in an embodiment of the present invention, and FIG. FIG. 7 is a diagram showing changes in terminal interface lines when changes in one line are used together in another embodiment. 11, 22...Signal bit, 12, 21...7
- Tabitsuto. Figure 1 Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1. In a pre-communication information delivery method of a switching network that accommodates terminals that use an envelope transmission method consisting of a periodic array of signal bits and a plurality of data bits, when an exchange indicates an incoming call to a terminal, In the idle state, an envelope with signal bits of 0 and data bits of all 1 is continuously sent,
Unlike the normal incoming call display by continuously transmitting a paging character in which signal bits and data bits with 0 precede the synchronization character, the incoming call is indicated by transmitting an envelope string of a specific pattern other than the paging character that precedes the synchronization character. A pre-communication information delivery method characterized by delivering additional information regarding an incoming call to a terminal prior to display. 2. In the pre-communication information delivery method of a switching network that accommodates terminals that use an envelope transmission method consisting of a periodic array of signal bits and multiple data bits, when the exchange indicates an incoming call to the terminal, the signal bits are transmitted in an idle state. Continuously send an envelope in which the bit is 0 and the data bits are all 1,
Unlike the normal incoming call display by continuously transmitting a paging character in which the signal bit is 1 and the data bit precedes the synchronization character, an incoming call is indicated by transmitting an envelope string of a specific pattern other than the paging character that precedes the synchronization character. A pre-communication information delivery method characterized by delivering additional information regarding an incoming call to a terminal prior to display.