JPH0748776B2 - Common line route selection identification method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exchange network, and more particularly to a common line route selection / identification method in a exchange network having a route in which a common line signal system and an individual line signal system coexist. It is about.

[Conventional technology]

Conventionally, in a switching network that has a route in which common line signaling, which has abundant inter-station services, and individual line signaling, which has little inter-station services, exist in the switching network. There was no so-called identification means for the calling subscriber to know which way the call was connected.

[Problems to be solved by the invention]

For this reason, the conventional exchange network has a drawback that the inter-station service on the common line cannot be used.

[Means for solving problems]

According to the common line route selection system of the present invention, when an incoming call exchange receives a start signal based on the common line signal system as a signal indicating an incoming call, it starts based on the common line signal system to which a predetermined identification signal is added. A means for returning a completion signal or a busy signal to the originating exchange is provided, and the originating exchange, when the start completion signal or the busy signal based on the received common line signaling system is added with the identification signal, makes a call. Equipped with means for transmitting a predetermined audible sound to the subscriber terminal, the audible sound is transmitted to the calling subscriber to confirm that all routes to the called exchange are connected by the common line signaling route. This is to notify the person.

[Action]

The present invention can enable the calling subscriber to use abundant inter-office services that are provided in the common line service.

〔Example〕

FIG. 1 is a block diagram showing an embodiment of a common line route selection / identification system according to the present invention. In the figure, 1, 2 and 3 are A station, B station and C station respectively, 4 is a calling subscriber accommodated in A station 1, and 5 is a relay connected between A station 1 and B station 2. A common line with abundant inter-office services, 6 is B
A common line which is a relay line connected between the stations 2 and C and has abundant local services, and a relay line 7 which is connected between the B station 2 and the C station 3 and which has an inter-station service. Not so many individual lines,
Reference numeral 8 denotes a called subscriber accommodated in the C station 3.

Next, the operation of the common line route selection / identification method with the above configuration will be described with reference to FIGS. First, the second
As shown in the figure, the calling subscriber 4 is station A 1 --- common line 5 ---
Station B 2 --- Common line 6 --- In the case of a pattern in which a call is made to the called subscriber 8 via station 3, the start signal 9 sent from station A 1 is the station B 2 as shown in FIG. If the terminating subscriber 8 is empty, the C station 3 returns the start-up completion signal 10 by way of the above, and at this time, the first identification signal is added and returned. Therefore, when the A station 1 receives the activation completion signal 10 and the first identification signal, it notifies the calling subscriber 4 of that fact. Therefore, the calling subscriber 4 can execute various services by this report. If the called subscriber 8 is busy, the C station 3 returns the busy signal 11 to the A station 1 via the B station. Next, as shown in FIG. 4, the originating subscriber 4 is station A 1 --- common line 5--B station 2
--Individual line 7--When making a call with the called subscriber 8 through the C station 3, the start-up transmitted from the A station 1 as shown in FIGS. 5 (a) and 5 (b) Although the signal 9 passes through the B station 2, the B station 2 activates the C station 3 as the activation signal 12 for the individual line interface, and the B station 2 returns the activation completion signal 13 to the A station 1. At this time, it is returned without adding the first identification signal or returned with the second identification signal added. Therefore, station A 1 sends this start-up completion signal.
Since no signal is received or the second identification signal is received following the reception of 13, the calling subscriber 4 is notified of that fact. Therefore, the calling subscriber 4 knows that he / she is connected to the calling subscriber 8 via the common line 5 and the individual line 7, and cannot receive the inter-office service very much. In addition, station B 2
When the TRK is busy, the busy signal 14 is returned (see FIG. 5 (b)). The flow of the common line signal described above can be shown in FIG. In the figure, D is the exit side sky (common line),
E is an outgoing side busy line (common line), F is an outgoing side individual line, G is a called subscriber busy, and H is a called subscriber empty. Therefore, when the station A 1 receives the activation completion signal or the busy signal,
Start completion signal 10 or busy signal 11, 5th as shown in the figure
As shown in FIG. 5A and FIG. 5B, the start completion signal
Since either the 13 or the busy signal 14 can be received, this is identified, and in the case of the activation completion signal 10 or the busy signal 11, a special sound is sent to the calling subscriber 1 as shown in FIG. It is a thing.

In the above description, when all the connecting routes to the receiving subscriber station are via the common line signal route, the identification signal is added to the activation completion signal and returned, but the invention is not limited to this and the activation completion signal and the identification signal are sent. It is needless to say that the signal may be an integrated signal, and that a different identification signal may be added to the busy signal and returned.

〔The invention's effect〕

As described in detail above, according to the common line route selection / identification method according to the present invention, it is automatically identified whether or not the connection routes from the calling station to the called station are all common lines, and all common lines are identified. In this case, the corresponding calling subscriber can be notified of that fact, and therefore, it is possible to use abundant inter-station services provided in the common line service and improve the service.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a common line route selection / identification method according to the present invention, and FIGS. 2 and 3 are network and signal protocols when all common lines are used in FIG. FIG. 4, FIG. 4 and FIGS. 5 (a) and 5 (b) are diagrams showing the network and signal protocol when a part of individual lines are used in FIG. 1, and FIG. It is a figure which shows the flow of the common line signal in FIG. 1, 2 and 3 ... Stations, 4 ... Originating subscribers, 5 and 6 ...
… Common line, 7 …… Individual line, 8 …… Incoming subscriber, 9 and
12 …… Startup signal, 10 and 13 …… Startup completion signal, 11 and 14 …… Busy signal.

Claims (1)

[Claims] 1. An originating exchange that accommodates an originating subscriber terminal,
In a switching center network that has a receiving switching center that accommodates the receiving subscriber terminal and these switching centers are connected by a route in which common line signaling and individual line signaling are mixed, the receiving switching center When a start signal based on the common line signaling system is received as a signal indicating, a means for returning a start completion signal or a busy signal based on the common line signaling system to which a predetermined identification signal is added to the originating exchange, The originating exchange has means for transmitting a predetermined audible sound to the originating subscriber terminal when the identification signal is added to the received activation completion signal or busy signal based on the common line signaling method. , A common feature that the calling subscriber is notified by sending the audible sound that all the routes to the called exchange are connected by the route of the common line signaling system. Catalog Select identification method.