JPH03242074A - Junction line connection system - Google Patents

Abstract

PURPOSE:To improve the efficiency of communication lines used by plural repeating routes adopting the common line signal system by sharing communication lines among calls set to respective repeating routes. CONSTITUTION:Repeating routes Ra to Rn, private signal lines 300a to 300n corresponding to them, and plural communication lines 400 common to repeating routes Ra to Rn are provided. The communication line used for calls set to respective repeating routes Ra to Rn is selected from plural communication lines 400. Consequently, calls set to repeating routes Ra to Rn share the communication lines. Thus, the efficiency of communication lines used by plural repeating routes adopting the common line signal system is improved.

Description

[Detailed Description of the Invention] [Summary] Regarding a trunk line connection system between exchanges connected by a plurality of relay routes each adopting a common line signaling system, The aim is to improve the efficiency of the communication paths used in multiple relay routes that adopt the signaling method as much as possible by providing dedicated signal paths for each relay route. A plurality of communication paths are provided in common, and communication path sharing means is provided for selecting a communication path to be used for a call set for each relay route from among the plurality of communication paths.

[Industrial application field]

The present invention relates to a trunk line connection system between exchanges connected by a plurality of relay routes each employing a common line signaling system.

CCIT is a signaling system that quickly transfers a rich variety of control signals between exchanges, mainly for voice calls.
Although the Aim 7 common line signaling system based on the T recommendation is in practical use,
Furthermore, the common channel signaling system (hereinafter referred to as the D channel common channel signaling system), which uses the D channel in the Integrated Services Digital Network (ISDN) and complies with the CCITT Recommendation ■ series, supports data calls (unrestricted digital 64) is also being developed as a target.

As a result, when it became necessary to add data calls between stations that had originally adopted the AIM7 common line signaling system for voice calls only, the relay routes that adopted the existing 1LH7 common line signaling system were changed. , a situation may arise in which a relay route that adopts the D channel common line signaling system is installed.

[Conventional technology]

FIG. 4 is a diagram showing an example of a conventional trunk line connection system, and FIG. 5 is a diagram showing an example of the switch in FIG. 4.

In FIG. 4, exchange 1 has the same exchange 2 as
A relay route R1 that employs the M7 common line signaling system for setting up voice calls and a relay route R1 that employs the D channel common line signaling system mainly for setting up data calls are provided.

For the relay route R, one signal route 3 and a plurality of communication routes 4□ are provided, and for the relay route R1, one signal route 3. and multiple communication channels4. and is provided.

Further, in FIG. 5, signal paths 31 and 3. are accommodated in the network (NW) 11 via common line signaling devices (C3E) 13□ and 13b, respectively, and all communication paths 4□ and 4. is also accommodated in the network (NW) 11.

In addition, the central control unit (CC) that controls call control in the exchange 1
) 12 includes a transmission control unit 122 . ,
Incoming call control unit 123□, communication path blockage control unit 241, and outgoing call control unit 122 for relay route R6. , incoming call control unit 1
23. and communication path blockage control section 124. and is provided.

Communication path blockage control units 1241 and 124. 4. are all communication channels, respectively. and 4b air block information.

In FIGS. 4 and 5, when a voice call to exchange 2 occurs in exchange 1, central control unit (CC) 1
The call control unit 121 in the exchange 2 analyzes the originating call and identifies it as a voice call based on the incoming telephone number, etc., and decides to set up the call via the relay route R1.
request a call setup.

The transmission control unit 1221 refers to the communication channel empty/blocked control unit 1241, selects and captures one free communication channel 41 from all the communication channels 41 included in the relay route R1, and selects and captures one free communication channel 41 from among all the communication channels 41 included in the relay route R1. ．． After blocking the signal path 3., the signal path 3. A call setup request signal specifying the captured communication path 41 is sent out.

Thereafter, various control signals are transmitted and received between exchanges 1 and 2 via the signal path 31 based on the service procedure defined in the floor 7 common line signaling system, and the captured communication path 4. Perform voice communication via.

Also, a voice call is generated at the exchange 2, and the voice call is terminated at the exchange 1, and from the exchange 2 to the signal path 3. When a call setup request signal specifying the communication path 41 arrives via the central control unit (CC
) 12 is a common line signaling device (C5
E) Analyze the call setup request signal received via 13□,
When the four specified communication channels are identified, the communication channel blockage control section 124 is referred to, and after blocking the identified communication channels 41, a call setting request signal is transmitted to the call control section 121.

Thereafter, various control signals are transmitted and received between exchanges 2 and 1 via the signal path 3, based on the service procedure specified in the N117 common line signaling system, and voice communication is performed via the identified communication path 43. .

Next, when a data call occurs in exchange 1 with exchange 2 as the terminating station, the call control unit 121 analyzes the originating call, identifies it as a data call based on the incoming telephone number, etc., and sends the call via relay route R1. It is decided to perform the settings, and the transmission control unit 122. requests call setup to exchange 2.

Transmission control unit 122. refers to the communication path blockage control unit 124b, and all communication paths 4. included in the relay route R5. Select and capture one free communication channel 4b from among the captured communication channels 4. After blocking the signal path 3., the signal path 3. The captured communication channel 4. A call setup request signal specifying the call setting request signal is sent.

Thereafter, various control signals are transmitted and received between the exchanges 1 and 2 via the signal path 3b based on the service procedure defined in the D channel common line signaling system, and the captured communication path 4. Data communication is performed via.

In addition, a data call is generated in exchange 2, and the data call is terminated at exchange 1, and from exchange 2 to signal path 3. Communication path 4. When a call setting request signal specifying arrives, the incoming call control unit 123
．． analyzes the call setup request signal received via the common line signaling device (C3E) 13b, and selects the specified communication path 4. When the communication path blockage control unit 124. After blocking the identified communication path 45 with reference to , a call setting request signal is transmitted to the call control unit 121.

Thereafter, signal path 3. The identified communication path 4. transmits and receives various control signals via the Data communication is performed via.

[Problem to be solved by the invention]

As is clear from the above explanation, in the conventional trunk line connection system, exchange 1 connects exchange 2 with relay route R1 that uses the 7-channel common line signaling system, and relay route R1 that uses the D channel common line signaling system. If route R1 is installed,
A plurality of communication paths 4 for each relay route R and R1, respectively. and 4 were provided exclusively, so each communication channel 4.
There was a problem that the usage efficiency of and 4 was reduced.

An object of the present invention is to improve as much as possible the efficiency of communication channels used in a plurality of relay routes provided between an opposing station and each employing a common line signaling system.

[Means to solve the problem]

FIG. 1 is a diagram showing the principle of the present invention.

In FIG. 1, 100 is an exchange to which the present invention is applied;
200 is a counter station connected to the exchange 100 by a plurality of relay routes Ra...R7, each employing a common line signaling system.

300,...300□ are each relay route R according to the present invention.
1...R, respectively, are dedicated signal paths.

Reference numeral 400 denotes a plurality of communication paths provided in common to each of the relay routes R1 to R7 according to the present invention.

500 is a communication path sharing means provided in the exchange 100 according to the present invention.

[Effect]

The communication path sharing means 500 connects each relay path R1...Rfi
The communication channel 400 to be used for the call set for the four parties is selected from among the plurality of communication channels 400.

Therefore, calls set on each relay route share the communication path, improving the efficiency of using the communication path.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a diagram showing a trunk line connection system according to an embodiment of the present invention, and FIG. 3 is a diagram showing an example of the exchange in FIG. 2. Note that the same reference numerals indicate the same objects throughout the figures.

In FIG. 2, the exchange 1 is shown as the exchange 100 in FIG. 1, the exchange 2 is shown as the opposite station 200 in FIG. 1, and the relay route R in FIG.
Two sets of relay paths R1 and R5 are shown as 1...R, and signal paths 300 . ...30
0. as signal path 3. for each relay path R8 and R1, respectively. and 3 are provided, and a plurality of communication paths 4o are provided as the plurality of communication paths 400 in FIG.

Further, in FIG. 3, as the communication path sharing means 500 in FIG.
28 are provided in common for the relay routes R and R1, respectively.

The communication channel blockage control unit 128 holds the blockage information of all the communication channels 4c.

In FIGS. 2 and 3, when a voice call to exchange 2 occurs in exchange 1, central control unit (CC) 1
The call control unit 125 in 2 analyzes the originating call and identifies it as a voice call based on the incoming telephone number, etc., and decides to set up the call via the relay route R1, and sends the call control unit 126 to the relay route R1. R
, and requests the exchange 2 to set up a call.

The transmission control unit 126 refers to the communication path blockage control unit 128, selects and captures one free communication channel 4C from 1I (8B4o) in the picture, blocks the captured communication channel 4c, and then selects a relay method. Common line signaling device (C3E) corresponding to route R3 3.
via signal path 3. is caused to send out a call setup request signal specifying the captured communication path 4o.

Thereafter, various control signals are transmitted and received between exchanges 1 and 2 via the signal path 31 based on the service procedure specified in the 7-way signal method 2, and voice communication is performed via the captured communication path 46. I do.

Furthermore, when a voice call terminating at the exchange 1 occurs in the exchange 2 and a call setup request signal arrives from the exchange 2 via the signal path 31, the incoming call control unit in the central control unit (CC) 12]27 analyzes the call setup request signal received via the common channel signaling device (C3E) 1.3 4c, a call setup request signal is transmitted to the call control unit 125.

Thereafter, various control signals are transmitted and received between exchanges 2 and 1 via the three signal paths based on the service procedure specified in the NCk7 common line signaling system, and voice communication is performed via the identified communication path 4C. .

Next, when a data call occurs in exchange 1 with exchange 2 as the terminating station, the call control unit 125 analyzes the originating call, identifies it as a data call based on the incoming telephone number, etc., and sends the call via relay route R1. It decides to perform the setting and requests the originating control unit 126 to set up a call to the exchange 2 via the relay route R5.

The transmission control unit 126 refers to the communication channel empty/blocked control unit 128, selects and captures one free communication channel 4c from all the communication channels 4e, blocks the captured communication channel 4c, and then selects a relay method. Signal path 3. via common line signaling device (C5E) 13b corresponding to path R1. A call setup request signal specifying the captured communication channel 4c is sent out.

Thereafter, signal path 3. It transmits and receives various control signals via the communication path 4o, and performs data communication via the captured communication path 4o.

Further, when a data call that terminates at the exchange 1 occurs in the exchange 2 and a call setup request signal arrives from the exchange 2 via the signal path 3b, the incoming call control unit 123 controls the common line signaling device (
After analyzing the call setup request signal received via C3E) 13b and identifying the designated communication path 4c) fr-, referring to the communication path blockage control unit 128, and blocking the identified communication path 4e, A call setup request signal is transmitted to the call control unit 125.

Thereafter, signal paths 3. It transmits and receives various control signals via the communication path 4c, and performs data communication via the identified communication path 4c.

As is clear from the above description, according to this embodiment, calls set on relay routes R□ and Rh are selected and captured by sharing the same communication path 4c.

Note that FIGS. 2 and 3 are only one embodiment of the present invention, and for example, the relay routes R□ and Rh are each M7.
It is not limited to those that adopt the common line signaling system and the D channel common line signaling system, and the relay routes R1 and R5 both adopt the common line signaling system, or both relay routes R1 and R5 adopt the common line signaling system, or both
By adopting the channel common line signaling system, signal paths 31 and 3. Although many other modifications may be considered, such as duplication of data to improve reliability, the effects of the present invention remain the same in either case. In addition, the communication path sharing means 500 includes a calling control section 126 and a receiving control section 12 shown in the figure.
7 and the communication path blockage control unit 128 (although many other modifications may be considered, the effects of the present invention will not change in any case. 100 is not limited to the illustrated exchange 1, and many other modifications may be considered, but the effects of the present invention remain the same in any case.

〔Effect of the invention〕

Second, according to the present invention, calls set on each relay route share the communication path, improving the efficiency of using the communication path.

m, 4b, 4e and 400 are communication paths, 11 is a network (NW), 12 is a central control unit (CC), 13a
and 13b is a common line signaling device (C3E), 121 and 125 are call control units, 122, .122., and 126
are transmission control units, 123, . 123. and 127 are incoming call control units, 124, . 124b and 128 are communication channel blockage control units, 200 is an opposing station, and 500 is a communication channel sharing means.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a diagram showing a trunk line connection system according to an embodiment of the present invention, FIG. 3 is a diagram showing an example of the switch in FIG. 2, and FIG. FIG. 5 is a diagram showing an example of a conventional medium line connection system, and FIG. 5 is a diagram showing an example of the exchange shown in FIG. In the figure, 1.2 and 100 are exchanges, 3, . 3b
, 300. and 300. , are signal paths, 4 Principle diagram of the present invention Figure l Trunk line connection system according to the present invention % Formula % Figure 2 Exchange in Figure 3 Conventional trunk line connection system Figure 4 Exchange in Figure

Claims (1)

[Scope of Claims] In an exchange (100) having a plurality of relay routes (R_a...R_n) each employing a common line signaling system between the opposite station (200), each of the relay routes (R_a... A dedicated signal path (300_a...300_n) is provided corresponding to each relay route (R_n), and a plurality of communication paths (400) are provided in common for each of the relay routes (R_a...R_n), A communication channel (400) used for a call set up for the plurality of communication channels (R_a...R_n)
A trunk line connection system characterized by providing a communication channel sharing means (500) selected from among the members (400).