DE2618427C3 - Circuit arrangement for dialing devices in telecommunication systems, in particular telephone systems - Google Patents

Description

The invention relates to a circuit arrangement for dialing devices in telecommunications, in particular Telephone systems, consisting of an integrated, clock-controlled pulse generator module with Temporary memory for a direct dialing number and other integrated, clock-controlled memory modules for the direct dialing numbers, the memory modules with the pulse generator module via a common information line system for the serial storage and transfer of the individual Identifier of a speed dialing number are connected and where the for the dialing pulse generation by the pulse generator module required times are specified by the work cycle for the modules. Such Arrangements are, for example, by the publication AY-5-9200 from General Instruments, First known in 1974.

With the introduction of long-distance dialing and the ability to dial through to the subscriber in PBXs often result in the need to only the area code or the extension number as a speed dialing number in the speed dialing device to save and the actual participant

dial number directly.

This means that with such a combined dialing, a one-touch dialing number and post-dialing digits are sent one after the other according to their position, is known from known Arrangements - e.g. B. DE-AS 1255 727 - the buffer memory coupled to the pulse generator module designed in such a way that target dialing number and suffix dialing number are recorded one after the other can. The transfer of the identifier of a one-touch dialing number takes place in parallel so that post-dialing digits can be dialed without delay. at If you use the blocks described at the beginning, this requirement is not met because the characters are transferred serieil and the same work cycle for all modules to the timing conditions of the impulse is adapted. A separate buffer would therefore have to be introduced. The invention however avoids these difficulties and enables an immediate by-election by the fact that when used the destination dialing device as a call number transmitter with steep intermediate storage of directly dialed digits, e.g. B. Subscriber number in a private branch exchange, the memory modules are operated with an increased clock frequency compared to the pulse generator module, so that the Transfer of a selected direct dialing number from the memory module to the pulse generator module via the common line system is definitely completed when the first post-dialing digit arrives,

jo so that this is appropriate to the pulse generator module can be supplied immediately.

The invention makes use of the knowledge that the working cycle of the pulse generator module may not be influenced, but that the binding

J5 generation of the memory modules to the specified time conditions and thus to the specified work cycle is not required. So these building blocks can work faster if you have their work rate increased contrary to the manufacturer's information.

A separate buffer can thus be dispensed with and the existing modules can can be used universally. The work cycle for the pulse generator module is expediently derived from the work cycle derived for the memory modules by a frequency divider.

From DE-OS 2418391 an arrangement is known in which two different clocks are also used, namely one time 100 Hz corresponding to a clock pulse train with a pulse train time of 10 ms for the derivation of a digit burst series with a pulse ratio of 40 to 6 '.) Ms and on the other hand H) Hz corresponding to a clock pulse train with a pulse train time of 100 ms to control the MFC signaling. Both clocks are therefore not a work clock for dynamic, integrated modules to ensure the operation of these modules, but rather clocks for measuring time segments in the transmission of dialing characters. As a result, this citation does not provide any indication that similar, integrated modules with per se the same work cycle, z. B. 18 kHz, to operate with a different work cycle to solve the task at hand.
Further details of the invention are explained in more detail below with reference to an embodiment shown in the drawing.

This shows the well-known pulse generator module AY-5-91ÖÖ or AY-5-911Ö and memory modules

AY-5-9200 from General Instruments, which are designated with JG or SP1 to SPn .

The pulse generator module JG controls the relays NSA and NSI in a manner known per se, the contacts of which simulate the contacts of a dial. The external control A -ST with the clock generator TG is also shown.

Of the individual control lines, only the four lines Cl to C4 are for the transmission of the addresses identifying the call numbers in the individual memory modules SPl to SPn and for the transmission of the characters of a selected target dialing number, and the control line COM for controlling the address and character transmission from the external control A-ST to the individual memory modules as well as from the individual Speirher modules to the pulse generator JG and the clock lines t are shown. All other control lines between the external control A-ST and the individual modules are shown combined in the bundle ST .

As a result of the invention, the clock frequency for the memory modules 5Pl to SPn is excessive compared to that for the pulse generator module JG, for example in a ratio of 3: 1, so that a frequency divider T is connected upstream of the clock input for the pulse generator module JG. The known mode of operation of the arrangement is not influenced by this, but it is only ensured that the transfer of a target dial number selected in a memory module SP ... to the pulse generator module JG takes place much faster than before, so that subsequent digits that are in per se are received in a known manner by the external control A-ST , after overstoring the target dial number can be recorded by the pulse generator JG and cached appropriately.

Then the following flow of information results on the control lines Cl to C4:

Saving a direct dialing number: On the basis of a specified address, the external control A-ST selects a specific memory module, for example 5Pl, and selects a specific memory field in it, and deletes information contained in it. the

The memory module is selected via a line of the bundle 57 ″, while the Memory field address binary coded via the control line Cl to C4 is given. The individual digits of the one-touch dialing number are given below.

mer one after the other via the control lines C1 to C4 into the selected and deleted memory field transfer.

2. destaging a stored Zielwahlnum- ¹ 'mer: On the basis of a predetermined memory array address is activated the associated storage field in the storage as a speed dial number. With another control command via the trunk group ST , the

- ° Transfer of the selected Z'.J dialing number to

the pulse generator module JG vera: [leave and this is then sent out. The individual digits are transmitted to the pulse generator module JG again via the control line Cl to CA.

3. Transfer of post-dial digits: Post-dial digits picked up by the external control A-ST are sent directly to the pulse gel / building block JG via the control line C1 to C4

Jü forwarded where they supplement the destination number are cached according to the job.

The arrangement shown can be used directly for a subscriber in an individual assignment or Ji also centrally as a call number transmitter for several subscribers. In the first case, the address output and the input of the individual dialing codes take place directly through a keyboard of the external control A-ST, in the other case through supplied dialing digits.

1 sheet of drawings

Claims (2)

Patent claims: 1. Circuit arrangement for dialing devices in telecommunications, in particular telephone systems, consisting of an integrated, clock-controlled pulse generator module with a buffer for a drawing number and other also integrated and clock-controlled memory modules for the dialing numbers, the memory modules with the pulse generator module via a common information line system for serial storage and transfer of the individual characteristics of a target dialing number are connected and the times required for the dialing pulse transmission by the pulse generator module are predetermined by the work cycle for the modules B. subscriber number in a private branch exchange) the memory modules (z. B. 5Pl to SPn) compared to the pulse generator module (JG) operated with increased clock frequency earth, so that the transfer number, a selected one-touch dialing number from the memory module (e.g. B. 5Pl) to the pulse generator module (JG) via the common line system (Cl to C4) is safely completed when the first suffix e ;. it is met so that it can be directly fed to the pulse generator module (JG) in a location-appropriate manner. 2. Circuit arrangement na 'h claim 1, characterized in that the working cycle for the pulse generator module (JG) is derived from the working cycle for the memory modules (for example 5Pl to 5P; i) by a frequency divider (T) .