JP3028786B2 - Digital transmission line accommodation position information saving method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a save position information saving method for a single-slot call and a multi-slot call in a digital transmission line used in a multiplex transmission system using a time division multiplex system.

[0002]

2. Description of the Related Art Conventionally, transmission lines of digital telephone networks and ISDNs have been constituted by a multiplex transmission system based on a "time division multiplexing system" in which a plurality of channels are packed into one transmission line by a concentrator. This channel is called a time slot, a call using only one channel such as an analog subscriber is called a single slot call, and a plurality of channels (a basic interface adapted for home use is two channels, PBX, etc.) like an ISDN subscriber. (The primary rate interface used to accommodate a maximum of 30 channels) is called a multi-slot call.

[0003] Time slot information, which is a channel number on a transmission path, is stored in a time slot section provided in an accommodation position information save area in a communication path memory in which data transmitted between a subscriber and an exchange is stored. However, in the conventional multiplex transmission system, the time slot portion is reserved for 30 channels, which is the maximum number of multi-slot calls, regardless of whether the call used is a single-slot call or a multi-slot call. I was

[0004]

In the conventional system as described above, the time slot portion in the accommodation position information save area is set whether the call used is a single-slot call or a multi-slot call. 30 channels, which is the maximum number of multislot calls, are secured. However, since the number of channels used in a single-slot call is one, in that case, the memory for 29 channels is not used, resulting in a waste in the accommodation position information save area and the communication path memory. There is a point.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and is intended to be applied to a case where a call to be used is a single-slot call or a multi-slot call. It is an object of the present invention to provide a digital transmission line accommodation position information saving method that does not cause waste in an information save area or a communication path memory.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method for storing information on data transmitted in a multiplex transmission system based on a time division multiplex system in a communication path memory provided in a transmission path. And stored in the channel memory.
When a call used in a multiplex transmission system is a multi-slot call in a digital transmission line accommodation position information saving method in which a communication channel is set based on the received information, information on data to be transmitted is stored. have a stowed position information save area, the accommodation position information service area
And communication based on the information stored in the channel memory.
A speech channel is set .

[0007] In addition, the receiving position information save area,
It is characterized by having a header section for storing a speech path number and the number of time slots, and a time slot section for storing data for 30 channels.

Further, the speech path memory includes a header portion that the communication path number and the number of time slots is stored, and a time slot in which the data of one channel is stored,
If the call to be used in multiplex transmission system is a multi-slot call, characterized in that the number of the receiving position information save area to the time slot is stored.

(Operation) In the present invention configured as described above, in addition to the channel memory storing data to be transmitted in the multiplex transmission system based on the time division multiplex system, the present invention is used in the multiplex transmission system. When a call to be used in a multiplex transmission system is a single-slot call, an accommodation position information save area for storing data to be transmitted is provided when the call is a multi-slot call. The transmitted data is stored in the channel memory, and when the call used in the multiplex transmission system is a multi-slot call, the transmitted data is stored in the accommodation position information save area.

Thus, even when the slot information that can be stored in the channel memory is one channel, it is possible to cope with a multi-slot call, and the call used in the multiplex transmission system is a single-slot call. Also, when the call is a multi-slot call, no waste occurs in the accommodation position information save area or the communication path memory.

[0011]

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

FIG. 1 is a diagram for explaining the operation when subscriber information is transmitted by the time division multiplexing method.

A digital telephone network or an ISDN transmission line is constituted by a system based on a time division multiplex system, and as shown in FIG.
The signals are multiplexed by a and 1b and transmitted to the line controller 3. Here, transmission to the line control device 3 is performed by multiplexing a large number of channels into several digital transmission lines by multiplexing. This channel is called a time slot, and a call using one channel, such as analog subscriber A, is called a single slot call. An ISDN subscriber B belonging to the basic interface and an ISDN subscriber C belonging to the primary rate interface are called. A call using a plurality of channels (two basic interfaces and a maximum of 30 primary rate interfaces) is called a multi-slot call.

FIG. 2 is a diagram showing an embodiment of a communication path memory in the digital transmission path accommodation position information saving method according to the present invention.

As shown in FIG. 2, an accommodation position information save area 10 is set in the communication path memory, and the accommodation position information save area 10 has a header section for storing the communication path number and the number of time slots. 11 and a time slot unit 12 in which information for one channel is stored.

FIG. 3 is a diagram showing an embodiment of an accommodation position information save area for a multi-slot call in the accommodation position information save method of the digital transmission line according to the present invention. In this embodiment, as shown in FIG. 3, although the number of multi-slot calls differs depending on the system, a plurality of accommodation position information save areas are provided according to the number of multi-slot calls, and each of the accommodation position information save areas is provided. Is composed of a header section 31 in which a call path number and the number of time slots are stored, and a time slot section 32 in which data of 30 channels, which is the maximum number of multi-slot calls, is stored.

The storage position information storing process in the digital transmission line storage position information saving method of the present invention will be described below. FIG. 4 is a flowchart for explaining the storing processing of the accommodation position information in the accommodation position information saving method of the digital transmission line according to the present invention.

First, a call path memory as shown in FIG. 2 is captured (step S1), and the address of the accommodation position information save area therein is designated (step S2).

Next, it is detected whether the call to be used is a multi-slot call (step S3). If the call is detected as a multi-slot call, the multi-slot call as shown in FIG. The storage location information save area is captured (step S4), and its start address is specified (step S5).

If it is detected in step S3 that the call used is not a multi-slot call but a single-slot call, or after the processing in step S5 has been performed, the channel number of the subscriber, ie, the time slot is determined. (Step S6), the single slot call specified in Step S2 is stored in the channel memory and
For the multi-slot call, the time slot information is stored in the header portion and the time slot portion in the accommodation position information save area for the multi-slot call (step S7).

Thereafter, it is again detected whether or not the call to be used is a multi-slot call (step S8). If it is detected that the call is a multi-slot call, the call is stored in the accommodation position information save area of the call memory. Then, the data stored in the header portion of the multi-slot call accommodation position information save area is written, and the number of the multi-slot call accommodation position information save area is stored in the time slot portion (step S9).

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The operation of one embodiment of the present invention will be described below in detail.

First, when a single-slot call A, which is an analog subscriber in FIG. 1, uses channel 1, a call path memory is captured, an address of an accommodation position information save area is designated, and a time slot is specified. Is determined, the communication path number, the number of time slots (= 1), and the time slot information (channel 1) are obtained, and are respectively saved in the accommodation position information save area. On the other hand, FIG.
When the multi-slot call B, which is an ISDN subscriber belonging to the basic interface, uses channels 2 and 3, the call path memory and the multi-slot call accommodation position information save area are captured, and the multi-slot call When the address of the storage location information save area is specified and the time slot is determined, the channel number, the number of time slots (= 2) and the time slot information (channel 2,
Since 3) is obtained, each is saved in the multi-slot call accommodation position information save area.

Next, this is written in the header part in the accommodation position information save area in the communication path memory, and the number of the multislot call accommodation position information save area is written in the time in the accommodation position information save area in the communication path memory. Store it in the slot.

It should be noted that the case of the ISDN subscriber C belonging to the primary rate interface in FIG. 1 is stored in the same procedure as the case of the subscriber B.

[0026]

As described above, in the present invention,
In addition to the channel memory in which data transmitted in the multiplex transmission system based on the time division multiplex method is stored, the data to be transmitted is stored when the call used in the multiplex transmission system is a multi-slot call. If the call used in the multiplex transmission system is a single-slot call, the data to be transmitted is stored in the channel memory and the call used in the multiplex transmission system In the case of a multi-slot call, the data to be transmitted is stored in the accommodation position information save area, so that even if the slot information that can be stored in the channel memory is one channel, it corresponds to the multi-slot call. Whether the call used in the multiplex transmission system is a single-slot call or a multi-slot call, It is possible to prevent waste occurs in the information save area and the speech path memory.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an operation when subscriber information is transmitted by a time division multiplexing method.

FIG. 2 is a diagram showing an embodiment of a communication path memory in the digital transmission path accommodation position information saving method of the present invention.

FIG. 3 is a diagram showing an embodiment of an accommodation position information save area for a multi-slot call in an accommodation position information save method for a digital transmission line according to the present invention.

FIG. 4 is a flowchart illustrating a process of storing accommodation position information in an accommodation position information saving method for a digital transmission line according to the present invention.

[Explanation of symbols]

 1a, 1b Concentrator 3 Line controller 10 Housing location information save area 11, 31 Header section 12, 32 Time slot section

Claims (3)

(57) [Claims] 1. A information about the data transmitted in the multiplex transmission system according to a time division multiplexing scheme stored in the speech path memory provided in the transmission path, stored in a vent talk path memory
In a digital transmission line accommodation position information saving method in which a communication channel is set based on the received information, data transmitted when a call used in a multiplex transmission system is a multi-slot call. It has a housing position information save area for storing information relating to, the accommodation position information Sa
Service area and the information stored in the channel memory.
An accommodation position information saving method for a digital transmission path, wherein a communication channel is set based on the communication channel . 2. The accommodation position information save system according to claim 1, wherein the accommodation position information save area includes a header section for storing a communication path number and the number of time slots, and an area for 30 channels. And a time slot unit for storing data. 3. The digital communication path accommodation position information saving method according to claim 2, wherein said communication path memory includes a header section storing a communication path number and a number of time slots, and data for one channel. and a time slot unit to be stored, if the call to be used in multiplex transmission system is a multi-slot call, characterized in that the number of the receiving position information save area to the time slot are stored Digital transmission path accommodation position information saving method.