DE3028971A1 - Electronic telephone exchange with individual subscriber data memory - has assigned back-up memories for subscribers requiring increased permanent capacity - Google Patents

Abstract

The system makes the fullest use of the individual memory units provided exclusively for each subscriber. These memories (Spx,Spy) have limited capacity and deal with the essential data to be stored (ABC) for each subscriber. In the case of a subscriber requiring additional facilities a further memory unit (Spy') is made available in a back-up store (EDSp). In the latter case the first memory (Spy) contains only sufficient data (A,A') to identify the existance of a further memory (Spy'), and to call up the data (ABCDE) contained. Each unit in the main memory unit (GDSp) of the exchange is identified by a logic signal, e.g. 1 for normal and zero for additional memory connected. With this system the main memory is fully utilised at each subscriber position.

Description

Procedure for a centrally controlled telecommunications system, in particular

special telephone exchange with individual subscriber Seicherolaten.

The invention relates to a method for a centrally controlled telecommunications system, in particular telephone private branch exchange, with a speech path coupling network and with for the exchange of switching technology, for the connection establishment over the speech path switching network transmitted data, addresses and control commands between Control devices provided for different tasks and connection status individually changeable and connection state individually unchangeable data memories with the data transmission line bundles enabling the exchange of information as well as with different types of sentences for internal connections, trunk connections and cross connections and special functions and where to store the subscriber-specific data (Addresses, authorizations, additional data such as call forwarding etc. +) each subscriber station has a certain amount of storage space of the same size in one Data storage is allocated.

From the German Auslegeschrift 28 10 283 such is already the aforesaid centrally controlled telecommunications system, in particular telephone branch exchange known in the individual Aniageeinheit such as participant connections and conditions Connection sets and also subscriber stations certain amounts of storage space in are permanently assigned to a data memory. Here are the individual amounts of storage space e.g. for subscriber stations of the same size and designed so that they also have the maximum can record existing amount of subscriber-specific data.

It follows that with subscriber stations with a few or no additional individual data (special authorizations, subscriber services etc.) storage space remains unused. Since these subscriber stations in general make up the majority of the subscriber stations in a private branch exchange, the unused space is essential.

The object of the method according to the invention should therefore be the storage space viewed for the individual DaXes of the subscriber stations evenly, but to be distributed among the individual subscriber stations, that as little storage space as possible remains unused. This is achieved by that the equally large amount of storage space provided per subscriber station is so small it is kept that they maximally only the individual necessary for all subscriber stations Contains basic data and that if there is insufficient memory space for a part of the subscriber stations due to multiple authorizations and necessary individual Supplementary data of the respective subscriber station includes the basic data and the supplementary data containing additional storage space in an additional data storage and that when reading out the individual data from the same amount of storage space in the first place (first bit) an indication of the presence or absence an additional storage space can be found in a supplementary data memory.

This has the advantage that the basically the same size allocated amount of storage space is essentially always used and that at an additional storage space can be assigned to a subscriber station's real need can, whereby already at the beginning of the reading of the basic amount of storage space it is determined whether additional storage space can be expected.

The method according to the invention is shown below with reference to a figure explained.

The figure consists of a basic data memory GDSp with the memory locations Spx and Spy and a supplementary data memory EDSp with the storage space Spy '.

In the case of an aforementioned centrally controlled telephone exchange there are basically data memories in which the individual data of a Each subscriber station are stored. These data relate for example on the address, the individual authorizations and additional data such as Call forwarding or night service etc. This is done by assigning the individual subscriber stations For the sake of simplicity, storage spaces of the same size are allowed, with these storage spaces basically be designed in such a way that all data possible for a station are there can be saved. Since this amount of storage space is generally used for basic and supplementary data is only actually fully utilized in a few cases it turns out that there is a substantial amount of storage space that cannot be used for other purposes remains unused.

In order to keep this amount of unused storage space as low as possible, according to the method according to the invention, the one to be assigned to each subscriber station the same amount of storage space kept as low as possible. One shares each participant station e.g. only two bytes to 4 These are sufficient to store the basic data (address A ~ and e.g. basic Authorizations such as authorized »B or semi-authorizedCf of a subscriber station to record.

In the figure, the storage space is in the basic data memory GDSp for this purpose Spx of a subscriber station Tlnx is shown.

For the. Basic data ABCl the storage space is sufficient.

If the memory location is read out (from right to left), then recognizes the reading control already based on the first bit (1) that in the present two bytes die full existing and necessary for the subscriber station Information is available.

There are so many individual stations in a subscriber station - for example Tlny Data - basic data "ABC" and supplementary data "DE - assigned that these in the two the subscriber station is not accommodated in the byte (Spy) assigned to the basic data memory can be, then this subscriber station in a supplementary data memory an additional storage space allocated to Spy '. This is in the first place in the storage space Spy of the basic data memory GDSp, for example, stored a zero, whereby the querying control unit can immediately recognize that there is still to be information transfer a memory location (Spy ') in the supplementary data memory EDSp is to be queried. In In such a case, the storage location Spy essentially only contains the address a A of the subscriber station (Tlny) and the address »AH of the memory location to be queried (Spy ') in the supplementary data memory EDSp. The basic data (A, B, C) as well as the supplementary data (D, E) and thus the complete, individual data Data of the subscriber station.

The amount of storage space (Spy ') allocated to the subscriber station (Tlny) in the ErgXn7-ungsdatenspeicher depends on the individual needs of the subscriber station away. The allocated amount of storage space must accordingly be given or dax to be changed authorizations and special functions or subscriber services provided or changed.

As with the basic data memory GDSp also shows in the supplementary data memory EDSp the first bit, for example, by a stored 1, that in the assigned Amount of storage space Spy 'stores all individual data of the subscriber station are. From this notification procedure, the possibility can be derived that a subsequent extension the amount of additional storage space (Spy ') is possible without a general reorganization of the supplementary data memory. Recognizes the requesting control unit at the query of the supplementary data memory in the first bit a stored 2, then there is another storage space in this supplementary data memory for complete information or to query in another data memory. The corresponding further Address to be expected at the end of the supplementary data.

From the above it appears that it is according to the invention Method is possible in a simple manner, the individual subscriber stations one centrally controlled telecommunications system initially equal amounts of storage space for to assign participant-specific data, but also to a larger storage space requirement to do justice to individual stations, with as little unused storage space as possible accrues.

4 claims 1 figure Blank page

Claims (4)

Patent claim procedure for a centrally controlled telecommunication system, in particular telephone private branch exchange, with a speech path coupling network and with for the exchange of switching technology, for the connection establishment over the speech path switching network transmitted data, addresses and control commands between Control devices and connection status provided for different tasks individually changeable and connection status individually not changeable Data storage with data transmission line bundles that enable the exchange of information as well as with different types of sentences for interconnections, trunk connections and interconnections and special functions and where to store the subscriber-specific data (Address, authorizations, additional data such as call forwarding, etc.) of each subscriber station allocated a certain amount of storage space of the same size in a data store is, that the same size per subscriber station (one, Tlny) the intended amount of storage space (Spx, Spy) is kept so small that at most only the individual basic data required for all subscriber stations (A, B, C), and that if there is insufficient memory (Spy) for one Part of the subscriber stations (Tlny) due to several authorizations and necessary individual supplementary data (DE) of the respective subscriber station (Tlny) a die Basic data and additional storage space containing the supplementary data (A, B, C, D, E) (Spy ') is assigned in a supplementary data memory (EDSp) and that when reading out of the individual data from the same amount of storage space (Spx, Spy) first Digit (first bit) an indication of the presence (0) or non-existence (1) of an additional storage space can be found. 2. The method according to claim 1, d a d u r c h g e -k e n n t z E i c h e t that when an additional tape space (Spy ') is assigned to a subscriber station (Tlny) in the supplementary data memory the allocated storage space (Spy ') into a memory part for the basic data (ABC) and a memory part for the supplementary data (DE) is divided. 3. The method according to claim 2, d a d u r c h g e -k e n n z e i n e t that the allocated amount of storage space (Spy ') depends on the actual requirement is dependent on individual data (ABCDE) for the subscriber station. 4. The method according to claims 2 and 3, d a -d u r c h g e it is not possible to state that from the first bit of the allocated amount of storage space (Spy ') in the supplementary data memory (EGDSp) it can be seen whether this amount of memory (Spy ') actually contains all the individual data of the participant station (Tlny).