DE2009320C - Method and circuit arrangement for the asynchronous transmission of messages, pulse delta modulated night information in a telecommunications system, in particular a telephone exchange - Google Patents

Description

Scanned information signal received. A control unit CU sets the signaling device of a calling and a called subscriber for the transmission or reception of information signals provided with a call number and executes further control functions, as will be described later. The control functions are carried out periodically, with information being transmitted between participants during the breaks. This is shown in FIG. 1 symbolically represented by a switching device R which, for example, connects the lines / and / with the control unit during every second period, so that the scanning and control functions can be carried out, while the lines / and r are connected to one another in the meantime, so that a transfer of information between the participants is possible.

The I · 'ig. 2 a to 2 b shows the switching device R and the control unit CU together with two subscriber equipment .SVj and .S7> consisting of a Dcltamodulatnr Ma. Mh. A delta demodulator there. Db. a call number rcgistcrCYvY /, CNb, a lcilungsnummcrnrcgistcr LNa. LNb. and a comparison circuit /; "I a. I: 1 b.

The Dcltamodulatnr Ma. Mb. Which can be ternary or binary, as a ternary modulator, generates a pulse at an output in a known manner. ///>. if the amplitude of the input

ten ouantisicrungswcrt exceeds. If the amplitude of the input signal exceeds this value, the output * «. i7> a pulse is received, and if the amplitude of the input signal does not change, or if the change is smaller than the quantization value. so the Dcltamodulator does not generate an output signal. In the case of a binary modulator, a positive or a negative pulse is always obtained. 2 a to 2 b shown Dcltamodulatorcn Ma. Mh should be ternary modulators.

The demodulator Πα, Db receives the pulse from the output na, üb of the modulator Ma. Mh. Which impulse is continued at the same time as a call number according to the above explanations. The demodulator evaluates the pulse as an increase in the signal amplitude. If a call number is received but no pulse is received, this is assessed as a reduction in the signal amplitude, and if neither a pulse nor a call number is received, this indicates that the signal amplitude has not been andening, as was done later in connection with the function of the subscriber equipment is described.

The line number register LNa. For example, LNb has a number of bistable stages. which are put into the state corresponding to the line number of the subscriber concerned.

The number register CNa. CNb is similar to the line number register. The levels of the telephone number register should be set to the appropriate state according to the telephone number that was dialed for the connection in question. The way in which this is carried out will be described later in connection with the function of the control unit.

The comparison circuit £ 1 α, E \ b consists of a number of EXCLUSIVE-OR circles corresponding to the number of stages in the line or. Phone number register The comparison circuit should z. B. compare a transmitted call number with that call number which is stored in the Rufnummemregister CNa, CNb to determine whether a transmitted information is intended for the subscriber circuit in question.

ίο Below are first; the processes during a call between the participants Sa and .SV) gcmaU FIGS. 2a and 2b described. It is assumed here that the control unit CU already has a call in the participant status number for the bctrclfcndcn call in the phone numbercrnrcgisterCWfl or CNb . E-in, for example, the pulse received at the output «« of the modulator Ma is transmitted via the conductor / 1 of the multi-core transmission line / wcitcrgclcitel,

ao rend a pulse occurring at the output να is not wcilergelcitct. The call number stored in the call number register CNa is, however, wcitergcleitct in both cases. This is done with the help of a number of AND circuits A la, the number of which

the number of bits in the number register CNa corresponds. In the present example, the number of register levels was assumed to be eight levels, which means that 256 different binary call numbers or conductor numbers are formed be able. At the one entrance for the I. 'NP-Scho! -

A la obligations, the condition that the corresponding Rufnummcrnrcgislcrstufe is in the 1 state. The request for the other entrance exists. that a pulse from one of the outputs does.

ι «of the modulator Ma via an OR circuit Ol α and an OR circuit Ola is received. Thereafter, the number is called in parallel on a number of conductors / 2 to / 9 of the multi-core transmission line / wcitcrgelcitet, with each conductor a level in the number register CWa cntspri: ht. In order to avoid that the pulse at the output // «of the modulator Ma causes the call number to be transferred to another call number register, a diode Ga. Gb is provided.

The signaling during the transmission of information between subscribers and during various control processes initiated by the control unit CU can be seen from FIGS. 4 a to 4 i. The processes involved in the transfer of information tion can be seen from FIGS. 4a to 4b. In any case, if the quantization «value is exceeded, the call number is sent via conductor / 2 to / 9 transmitted together with a pulse via the conductor / 1, as shown in FIG. 4 a can be seen

SS is. If the input signal for the modulator drops more than the quantization value, only the phone number is transmitted via the conductors / 2 to / 9, as shown in FIG. 4 b can be seen. If there is no change in the input signal, there is no signal

transferred neither on the conductor / 1 nor on the Ladders / 2 to 19.

According to the assumption, the same call number is stored in the call number register CNb of the subscriberSfe (FIG. 2b) as in the call number register

CNa of the subscriber 5a (Fig. 2a). For each incoming call number information via the conductors r 2 to r 9, it must be determined for which subscriber the signal information also arriving at the same time

7 8

is determined. This is done by comparing the In gates / i Sb via an inverting input. Consequential

hold the individual call number registerCTV ", which is displayed at the inputs mb and nb of the

CNb ... with the incoming call number information modulator Dft a pulse depending on this

mation, and with those Teilnehincrausstattungen, receive whether an impulse occurs on the conductor rl

where a full match is 5 or not.

the number information is received. * The periodic alternation of the control with

For this purpose, the subscriber equipment is about the transmission of information from the

Sa a comparison circuit E 1 b is provided. The switching device /? carried out after the

Comparative circuit consists of eight EXCLUSIVELY selected example of a relay with a number

OR circles, with one input of each io consisting of make and break contacts. the

Schallungskrciscs with a single stage in the call F- "Fig. 2b shows the switching device" in the

nummernrcgistcrCWft and the other input mil position for transmitting information while

the relevant conductor r2 to r9 of the multi-core the switching device /? in the other setting

Receiving line is connected. In order to avoid. the multi-core cables / and r with the Stcucrein-

that the transmitted signal information from the outlet (7 / connects, as will be explained later in detail

stallation of the sending subscriber is received. The switching device /? can of course

will. is an inverting OR circuit O 3 «borrowed from an electronic device

intended to carry over the contents of the and is only for the purpose of simplifying the description

RufnummemrcgislersC '/ Vfl for comparison circuit shown as a relay.

/ -; 1 α with the help of the AND gate A la blocks, so 20 FIG. 3 shows an overview of the control length a Signa! at one of the outputs, among other things, especially of the unit CU , only those circuit elements modulator Ma appearing. The outputs of the EXKLU are shown, which are required for understanding the invention-SIV-OR gate of the comparison circuit £ 1 ft. The control unit CU has the inputs for an AND gate A 3 ft, which is a number of output terminals, which are generated with a number of output terminals with the number of output terminals at all eight positions. multi-core transmission line t . The demodulator Dft has two inputs mb, nb can, as well as a number of output terminals. If a pulse is received at the input mb , which is connected to the multi-core receiving line r in Vcrbinso increases the amplitude of the output signal. 30 carry the information required for the control function and if a pulse is received at the input nb , this is how it is received, and via which the control signals are sent, the amplitude of the output signal is reduced.

a quantization word. The function of the control unit is now not received either in gang mb or in input nb . In connection with the establishment of a connection, the amplitude of the output signal remains unchanged between a calling and a called party. To generate these bc'dcn types of Im subscribers, for example between the Tcilnchptilsen from the incoming signal information mem Sa and Sb (Fig. 2), described. The process according to FIGS. 4 a to 4 b are two AND gates can be divided into five hours, namely Ab- AAb and / 15 ft - 40 calling subscriber with a dial signal. Each AND gate has three inputs. The receiving device, forwarding the select one of the entry conditions for the AND gate information. Finding the called subscriber AAb. ASb consists of doing the above mcrs and making the connection.
Obercinslirnmungssignal at the output of the AND- The control unit scans the participant equipment gate / f 3ft appears, ie. that the transmitted 45 gene from to determine whether they are free or busy Sipnulinformation for the subscriber in question and to determine whether a call is made. Is intended to furnish. As already mentioned, for this purpose the control unit CU (FIG. 3) is equipped with the information transmission and the control a line number counter LC , the function of alternating time periods of pulses from a clock pulse generator CG . This alternation is so controlled by the control unit during each control period by one step unit CV that the AND gates -4 4 ft, are switched, so that during the 256 consecutive ASb only during the time period a second other subsequent control period each the 256 lei input received, which is recorded for the transmission of the information. The content of the line mation is determined while no input dialing number LC is available via the AND gate A 20 for the time period which is provided for the control functions to the conductors τ 2 to τ 9 at the same time. Said / wide input in which the conductor r 10 is activated, whereby angcwird obtained according to the example in such a way that it is shown that a control function and not an inverse input of the relevant AND gate transfer of information between subscribers A 4b, ASb is connected to a conductor rIO. mcrn is executed, as can be seen from FIG. 4c, by the control unit CV during the time 60. The transmission of a line number period is activated, which is provided for the control functions from the line number counter LC , as will be seen later from the description of the control pendants, in addition to the activation of the unit CU. Towards conductor r 10 a further condition is met that the third input is received via the conductor rl in namely a scan is carried out and not in the form of a pulse or no pulse over the 65 the establishment of a connection. Said conductor / 1, inter alia, from the output of the Mclulators Ma. Another condition is derived from a logical unit. The conductor 1 is in direct connection with a DV via an additional condition, as will be written later with the input of the AND gate A 4 b and with the AND. The in the ordnunesecmnfVn R. - you ^, -

9 10

The following transmitted line numbers become all contents ίΚ-.s line number counters LC to one

Subscriber equipment supplied; however, only calling line numbers will register LNa via a

the equipment is activated whose line number allows AND gates Λ 21. In the Rc

mer corresponds to the transmitted line number. gistcr ZJV «the line number is therefore saved

It is assumed that during a certain 5 chert for which a pulse is received over the conductor 1 1

Time period corresponding to the participant Sa "became, together with a sampling process,

Line Ent.Timer is transmitted. As already from d. H. the line number of a calling part

guided, is the Lechmer assigned to the participant.

service number in the line number register LNa in It must now be a free number dialed by the subscriber equipment .Sa (Fig. 2) stored. OK, so that it can already be used, and this stored line number is now compared with the line number when the calling subscriber is connected to a scheme more with the code receiver KM shown arriving via the conductors r2 to r ^l ) . For this purpose, the code receiver is essentially the same as the comparison circuit E 1 α described above, the subscriber equipment. The selection of a free one is used, whereby the call number stored in the register LNa is made with the help of a call number line number via the AND gates A 6 «/.ur counter CC in the control unit CU, in which each of the comparison circuit /? 1 α is passed. These gates following settings representing a call number are received from the received via the conductor r 10. If the process is initiated, the counter CC signal is activated. Upon receipt of the agreement, the setting that represents the last selected call signal from the AND gate A 3 a is an AND ao number. The counter is activated by one gate ATa at a time. With this gate, in addition to step wcitergcschaltct, after which a pulse over the same is determined by a Vcrdem match signal, whether the wire 10 is currently being received by the counter. On the basis of the displayed number in one of the subscriber out output signal from the AND gate / 1 la , the congestion is registered or not. If the call number indicated by the counting content of the call number register CNa via the carrier CC is forwarded to the control unit C (in one of the subscribers / 2 to tR -. the phone number in question is already occupied, the numbers register CNa set to zero because This was preceded Forlschalten of the counter CC must sctiTt therefore continued is that each stage of the Rufnummemregisters be, is found to a number that SEPARATION in I of a compound to zero cingc- 30 in one of the Teilnehmerausstaltungcn not registered siciii wini from a Impuis who is a leader. the search for a Ireien number za is initiated by the line relay LKa of the subscriber to-if that is done a calling party. in this case, the signal representing the conductors / 2 from the output rf from the logical to f8 no call number is fed. Depending on whether unit Of ' This signal represents whether the subscriber is making a call or not. 35 line number counter / .C via a delay two cases are possible. If the subscriber carries out a circuit T 1 to zero at the same time as the call is made, a conductor ca is activated by the Lei- der Rufnummcrnzähler CC by a step progress relay LRa . The second one stands with a is switched, so that in the case of the abovementioned Verder inputs of an I iND gate A 8 a in connection with the last number dialed, two broader numbers: will need !. The clock pulse genestehcn. First a Ühi-u-instimmungssignal from rator CC / then switches the line number counter to the AND gate A 3 α received, and LC further, and the line numbers are activated in the second, the conductor / -10 must be activated in the correct order over the I.citerr2 output of AND gate A 8 'is transferred to the line to r9 in the same way as in the allotment, so that after all 45 conditions described in connection with the subscriber scan have been met, an impulse will be received via the ben . In parallel with the line number, Ci ■ 'is fed to the control unit via conductor / 1. The ladder / x 10 a pulse for marking the control process is shown in Fig. 4d. Performs the period transmitted as shown in Fig. 4c. Participant did not make a call. so there is no signal. During the scanning of the subscribers, the procedure in the essentials-Ladder 2 to 18, as can be seen in FIG. borrowed the same. The incoming Lettungsnum-If the subscriber concerned is busy, the mer is obtained with the stored line number'verCharacteristic for the connection from the same, and if they match, the phone number stored in the phone number register OVa via the line 1 2 to r8 nummemregister transmitted via the together with a pulse via the conductor rl, such as 55 conductor 12 to / 9. In the control unit CV shown in Fig. 4f. The control unit CF / evaluates the incoming call number from the subscriber equipment via the conductors rl to 19 in- conductor / 2 to i9 with the help of fojmation, so that if one of several EXCLUSIVE-OR gates £ 2 is not received with the signal the progression of the call number in the call number counter CC is compared via one of the conductors. I. line number counter / .C continued and the fol- lowing 60 If there is a match in all digital digits, whereby the lower line number is displayed during the next security period that the telephone number in question is being sent out for a period. On the other hand, it is placed over d ".." is. if the counter CC receives a pulse one step further, then this is switched on at the same time that the line disconnects a call. The evaluation takes place with nummemzähler LC is set to zero, after which the help of a logical unit DU in the Steucrein- 65 this is controlled in the same way if the term C / 7, which in the first case no signal at the new call number in the counter CC is free or not. Output d generated. In the latter case, a pulse occurs at the output signal of an AND gate A 22 at output d , which has the effect of transmitting the counter CC and the advancing of the counter CC

11 12

Setting the counter LC to zero. The AND- activated as a function of the fact that a Stcuer-Galtcr / 4 22 is activated under the condition that perioJe is in progress (see. Fig. 4g). The output signal is received from all EXCLUSIVE-OR gates El an out conductor r 2 to r9 on the subscriber equipment, and that a flip-flop incoming line number information is set to "1" in Vl , whereby 5 of each subscriber equipment with which it is indicated in the relevant that the search for a free call line number register stored Lcitungsniimmcr is carried out and not a normal number compared to determine for which scan the subscriber is. The flip-flop Vl is intended to participate in the information. In the state "1" set by a signal that subscriber equipment Sa, which occurs after the selected at the output d of the logic circuit DU , io belongs to the calling subscriber, if a calling subscriber is determined, the incoming line number in the While a change to the "0" state, comparison circuits E \ a with the line number follow if a free call number is found. compared, which is stored in the register I.Na, and

If there is no correspondence between the call in the same way as already described in the total number in the CC counter and one of the call numbers, 15 depending on the scanning of the subscribers via the conductors * 2 to / 9 in the proper If there is a match, the AND- Gate sequence from the subscriber equipment to Aia received a signal. As a result of the fact that when the counter LC has activated all the line numbers, the line rl and the line r10, the calling number is the one, an AND gate A 9a becomes an exit. The content of the call number counter CC is received in ao output signal. This output signal is fed to a call number register .SWC via the L'ND gate via a delay circuit Ta to an AND / 123 from an output signal from an AND gate AlOa . The purpose of the delays Gattcr / 124 entered. The activation of this approximate circuit Ta is the AND gate AND gate depends on it. that all stages of the A 10 "receive a signal during the next control period Lcitungsnummcmcm / ählcrs LC are in the state" 1 "35, _t ~ n the registration of the dialed are, and that the output of the AND gate call number in the call number register CNa of the .- (22 no signal has been received. To enable the last subscriber to call. With the condition mentioned, the AND gates A 2 (j that for the last line number combination in the control unit CU from No coincidence signal occurs in shift register SK 1. 30 is activated and, for example, from the clock pulse

! ". in free code receiver KM, whose 1 citation generator CC is step-by-step. During number in a code not shown in the following Sfucr period, the selected gcr number register in the control unit CU in the call number from the call number register .WC via the same It is intended to store the manner in which the lines r 2 to r 9 are transmitted together with a signal number of the calling subscriber in the register LNa.35 via the conductor / · 10, as in FIG ;: shown. The call number can now be registered. As will be described below, the number register CNa of the subscriber Sa on the connection of a codec receiver is essentially the reason that the same as the connection of a called partial AND- Gate AlIa from the output signal from the recipient. The number dialing can be activated after a 40 AND gate A 10 «, and that unrecognized process n take place and is therefore not described in the the delayed signal from the delay individual. After dialing the number of the circuit Ta. The signal on Jjm head MO emp line number of the called subscriber has been caught.

The connection of the free code receiver is connected to the code receiver.

The standing transmitter OMR to a 45 addressed the method described above. the

Called line number register LNB in the control- only difference is that in the first

transfer unit CU . Phase out the number of the free code receiver

To establish a connection between a subscriber (e.g. subscriber5Ό) and will send out the code receiver number register. In the same way, as already written either to a free code receiver or to a 50, the dialed call number for the code called is then called. In this case, the selected receiver KM must be forwarded to the subscriber (e.g. 56). Call number in the subscriber's equipment of the calling party As already mentioned, the number dialing can be carried out in the calling party as well as in the code receiver or in a known manner and is therefore not described in detail in the subscriber equipment of the called party, since it is registered to the subscriber. About the ladder r 2 to 55 understanding of the invention is not necessary. r9 is the line number of the calling part. After receiving the subscriber number in the coder in a first phase from the register LNa receiver, it is transferred in the translator OAfR to a via the AND gate A 25, which is translated or converted from an I citungsnummer, the signal become activated from a time delay circuit in the called line number register LNB , which is stored as a shift register 60 according to the example. The calling of the called part SK 1 is shown schematically. The shift register subscriber AB is done essentially in the same way as activated by the signal from the AND gate A 24, as in connection with the registration fourth when a free call number has been found in the equipment of the person to be called. When transferring the line number the subscriber was already described. The conductor r 1 is also activated by the first 65 line number of the called subscriber Sb stage of the shift register to mark that a procedure is routed out of the register LNR for registering in a call number in a first phase. In the second phase, however, register has been initiated. The conductor r 10 is not transmitted a call number, but a certain one

binary combination, a ring number /V.SW over the ladder ι 2 to ι ⁽ ) together with a SigiKil over the ladder rl. The various phases are controlled in the same way. as in Ζιινιηιπκηΐκιπ !; with the registration of the dialed number in the number register CXn iles of the calling subscriber. A shift register SK 2 is used in this case. that is continued by a Sicnal from the translator OMR

calling party is set to zero. The logical unit / H '' evaluates the information received. and it is au ^f a conductor /; receive a signal, the forwarding of the Lei-HüH'snummer of the called subscriber from the register LXB is initiated, which is followed by the dialed number from the register .SAT. In this case, a shift register .SA'3 is used, the first stage of which is the AND gate, -! 27 activated so that

/ next level the AND gates.-1 26 activated. The call number is sent out and registered in the call number register CXh of the called subscriber. This establishes the connection 15 and the transmission of the call signals can begin, as in connection with FIG. 4a. 4b described.

Fig. 5 shows a block diagram of a telephone system according to the invention with two groups

let the line message is sent out in connection with the forwarding of the io, while the line number of the called subscriber is sent to the
RciNter LXR. The first stage of the shift register
> K2 is in charge of ÜberraüuiiL! the line number
of the called subscriber from the LXR register
via the AND gate A 27. during the second
Sti'fe the transmission of the ring signal number W.SA '
initiates from a Lüiiienummemreüister RR via the AND gate A 28 / u of the subscriber equipment,
which is prepared for reception in the first phase

would. The ringing signal number is constant during 20 _V cn subscribers Gl and G2, with the subscribers being able to lead to all subscriber congestion from one group to another during the periods of the transmission of information. The ringing signal code generator, not shown, can of course have any number of conductors rl to; 9 together with a delta subscriber groups, and only for modulated ringing signal via the conductor rl, only two parts of the description were sent. Here, a correspondence signal is selected in subscriber groups. Each group Gl or G2 de.i subscriber equipment generated, which corresponds to a ringing signal to be received in connection with Fig. 1, and in their call number-described group. According to the selected example register the ringing signal number essentially in each group comprises 256 participants. The control is registered in the same way as unit at a 30 CU is arranged in this case so that normal call. the occurrence of Ubereinstim- _s j _e the control functions for connections within mung signal from the aND gate / 13 b depends DA in each group and run between the groups from from that in the comparison circuit Elfe can. The function of this control unit corresponds to agreement established A distinction was made between the essentially the function of the special 35 stored in connection in the call number register CA'ft with the F i e. 3 described control unit. Devices are drawn into their ringing signal number and that via the conductor in FIG. 3, the ringing signal number arriving at / • 2 to r9 from that of the control unit in one of several groups of ringing signal code generators. Here, the AND participants comprehensive system are required. Gate / 14 b, A 5h activated in exactly the same way In a system comprising several groups as in connection with the forwarding of 40 to F i 5. 5, the various Ftink call information is described (cf. FIGS. 4a to 4b). tion periods "does not consist only in that each transfer period divided but each group on whether the handset is hung up or have _mu ß jh _re own tax period. The Rufnicht, the demodulated audio information to a non-transferable only in tax periods and call The only difference The loudspeaker shown in the telephone set can be connected in parallel to the groups concerned during a call transmission period

The calling subscriber Sa receives simultaneous transmission of calls to the other group through

tig a ringing sign, for example from the code, so that this is secured, as later

recipient who will be described with the participant during the 50th. For example, will the

Establishing the connection is connected, and control periods for the two groups with 111 and

which denotes a delta-modulated ringing character together with ul , and is the call transfer

The dialed number for the calling sub-periodc within the relevant group with / 0

recipient sends back, so that this is designated via the ab-, and is also the call transfer

gcnommcr.cn handset receives a ringing period from group Gl to group G2 and

catches. from group G2 to group Gl with / 1 or / 2

If the called party answers Sb,
so the conductor ch receives a potential from the
Lcitungsrelais LR b in the same way as if

the participant Sa makes a call. The 60 and call number series within the means that the relevant subscriber groups will be used during the next scan. As long as Vcr-Läutcsignalnummcr RSN, which is registered in the call number register CNb , to the lines / 2 to / 9
is routed together with a signal via the

Conductor / 1 from the AND gate / 18 b, as in the 6 ₅ bcnc process the process to be performed

Fig. 4i shown. As can be seen from FIG. 4d, however, with the difference that the control unit

is, the difference to a call is that Stcucrfunktioncn within the groups concerned

that with a call the number register executes the during the Stcucrperiodcn ui or «2.

the periods can be as follows
Repeat patterns have: / 0, / 1, / 0, / 2, / 0,
ιιί, / 0, / 1, / O, / 2, / 0,1 / 2 ... etc. Same line

links only between participants of the same
Group should be established as long as corresponds
which is described in connection with Figs.

For this purpose, the control unit activates during the relevant control period the ladder groups rl to rlO and / 1 to / 9, which belong to the relevant subscriber group, via the switching means R I or R 2, which belong to each subscriber group, in the same way as described in V'en Jung with only one subscriber group. For the sake of simplicity, the switching means are shown as logical switching units with AND gates / (51. A 52 and, 161. A (si . Each AND -Gatterschaltung includes nine aND gates, associated with the conductors / 1 relevant to r9. During the Anrufübertragungsperiodc / 0, the aND gate. Λ 51 and a 61 activated by a conductor ft 12, for example from an unillustrated shift register into the control unit CU. Here, the ^ nrufinformatioii the group (71 and transmitted within the group G2 in the same way as only one subscriber group. While the members of the group Gl control period til the AND gate A52 is activated by a shift register, not shown, via a conductor A1, the transmission of information from the subscriber group Gl to the control unit CU for the purpose of interpretation being made possible. In the same way, the AND gate A 62 is activated during the control period z / 2 via a conductor ft I, the transmission of information from the subscriber group G2 to the control unit being made possible. An AND circuit A 53 is provided for transferring actuator information from the control unit to group G1. This circuit is activated in the same way as the AND circuit A 52, namely by means of a signal via the conductor α 12 from the control unit. An AND circuit A 63 is provided for transmitting control information within group G2. The difference between this circuit and the AND circuit A 53 is that ^ the AND circuit A 63 is connected to the conductor α 12 via a reversing output, which means that the AND circuits A 53 and A 63 are never closed can be activated at the same time. This simplified control procedure is of course only possible in a system with two groups of participants. In a system with several user groups, several lines must be used to connect one group to the control unit. As already stated, the transmission of call information from group Gl to group G 2 and from group G 2 to group G 1 is carried out during the period / 1 and / or/2. There is a common leader to transfer the phone number and call information between the groups. provided, while the signal on the conductor α 12 indicates for which group the information is intended. The call information intended for a subscriber within the same group or for a subscriber in a different group occurs in the groups concerned only during the time period / 0. In order to store the information intended for another group until the transfer can be carried out, a storage device is required. According to the example chosen, a buffer register HR 1 is provided in which the call information is stored in the correct order during the period / 0, which is present in the group Gl and is intended for the group Cl until the transmission in the period / '? is allowed. For the same reason, a pitffcr register HR 2 is provided in which information from group G2 intended for group G1 is stored until it can be forwarded in period / 2.

As already stated, within the the same telephone numbers for the groups of the Tcüneiimer rows used. To do this even with connection

ίο to enable / wipe groups is the calling Participants within their group are assigned a phone number while the called party Subscriber within his group is assigned a different number. Belongs to the connection

therefore two different phone numbers. When establishing connections between the groups, there is therefore a translation '. ι the phone number required that is valid within the group in question. The translation of a for example to

Call number belonging to group Gl into a call number which is assigned to the relevant connection in group G2 is carried out with the aid of an address translation register Ad belonging to group Gl. This register ACl is available with the partial

user equipment connected via the multi-core transmission line t . A call number in group G 2 is also translated into a call number belonging to group Gl with the aid of an address translation register AC2. Each address translation register is equipped with one memory cell for each call number within its own group, which is called by the occurrence of the call number concerned on conductors ti to / 9 of the bus /. In the memory cells that correspond to the call number within its own group, the control unit can store the call number in the relevant address translation register AC1, AC 2 , which is valid for the connection in another group, together with a marking that indicates the group as yet is described. The establishment of a connection between subscribers of different groups takes place essentially in the same way as already described for the establishment of a connection within a group, n. As an example it is assumed that a subscriber belonging to the group Gl calls Steinen subscriber Sd in the group G2 . The call is determined during the scanning of the group Gl during the control period u \ , after which the calling subscriber is assigned a call number, the subscriber being connected to a free code receiver Kivl exactly in the manner already described. In order to display in the control unit for which group a line

number or a calling number is determined, the line number and calling number registers have another step that is connected to the ladder fll2 for the group to be specified can be. This process is shown in FIG. 3

shown schematically. This further stage in the registers is set to status »1« or »0« depending on whether the content of the registers concerned is intended for group Gl or G2 is. Locating a called party with the help of the received from the code receiver Note information and the introduction of the pillar signal success! in the manner already described. In this case, however, the procedure in the for

17 18

the group Gl foreseen tax period ill If a call intended for another group is carried out. since the called subscriber heard information about the leader rl in parallel with the assumed / ur group Gl . In order to receive valid call numbers from the call number register CC for the called leader il to i9 with the help of their own group, the call subscriber enables a free call number within the 5 number information in the translation registers to select the group Gl , which is used for the calling transmission the call number in the other group belonging to that call subscriber in the group Gl number belonging to the buffer from the register SNC in a register SNA overstored in parallel with the call information. In the buffer car. This transfer can, for example, result from any known execution, if the line number of the called io can consist, the subscriber's number information is stored from the translator OMR by means of a, which has been received from the translation register par signals on a conductor, allele is obtained with the call information, and in which case the AND circuits A 29 are later forwarded via the conductor s. While being activated. A response from a reasonable transmission period y'O is d ' Jr subscriber and subscriber means that a signal from the i; In the groups concerned, existing information ... of the logical unit DU is received via the conductor r in the manner already described via the AND. and that for the called subscriber circuit Λ 51 to the conductors r \ to ^r 9 further selected call number passed from the register SNC , while the AND circuits / 4 30 for other groups in a memory register information in the correct order .WB is entered. 20 are stored in the relevant buffer registers. As already stated, the must for the relevant the. So that in the buffer register BR1 or BR2 connection in the other group valid call numbers are not registered in that memory cell during the control period u 1 and 2, the AND circuits A 54 or the relevant call number are in of their own / 164 are provided, which lock the translation register ACX group in the translation registers ACl or ACl 25 and ACl . The calling and calling numbers for the group in question when establishing an information item are, for example, heard from the buffer connection between different groups. register BRl and the UVD circuits AlO to the -Each translation register has, for example, the same time transferred to the associated network of binary flip-flop circuits in the group related information about an AND each column of a digit in a call number in the circuit A 71 is obtained. This AND switch corresponds to another group. The associated conditions are activated via a head al from the group in question informatics is contained in the Rufnum- not shown shift register in the control unit. Each Reil.e in the network corresponds to the CU during the transmission period / 1. Your phone number in your own group. The rows corresponding to the AND circuits A 80 and can for example by means of a non ones shown, 35 A 81 presented during the period / 2 for the transmission of diode network via one of the conductors / 2 of an information from the group Gl gehörenbis / 9 from the own group from or from which the buffer register BR2 is activated via a conductor b2 control unit via the one shown schematically.

Leader group d 12 are elected. After receipt As already stated, the call number of the calling subscriber and information from the relevant subscriber equipment of the called subscriber are only transmitted in the SNA device if the amplitude and SNB must be changed to the relevant input signal, the translation registers AC1, AC2 are entered larger than the so-called quantization value. the. During the positive changes belonging to group C1, the transmitted control period ul corresponds to the columns of the information register / ICl shown in FIG. which on the conductor group d 12 corresponds in a carried information to the first phase shown in FIG. 4b via the AND circuits A 31 via information. In the case of several subscribers that are transmitted by a level in a non-group, in both cases via the conductor all the shift registers shown can be activated 5 ° a signal belonging to the group can be received. Here nen. The corresponding to the content of the register SNA is the transmission to the relevant group so chende row of the translation register ACl is controlled that the AND circuits A 54 and A 64 selected in a second phase when the content of the dependent on the Head al2 an-Rcrir.ters SNA üh # r the AND circuits A 32 are switched to incoming signal. If there is an alternating group of conductors <212 is transmitted. On these 55 separate activations of the conductors al and bl , the manner is transmitted in the relevant memory cell in the information from the group Gl or G2. Translation register ACl the phone number in the The plant described above assigns to other group for the connection received. In other known systems the advantage that the registration of the call number in the group Gl a conference call is possible without a period u 2 provided for this purpose in the translation register AC2 during the control 60 the same procedure is followed. Needs to be in. It is also possible in this case that the columns are activated by the content of the multiplex division within the relevant group register SNA , while the relevant group is to be carried out in order to merge the informa series of the content of the register SWZ? is chosen. A number belonging to the group Gl can be received by several subscribers at the same time, suddenly in the translation register AC2 in the one information is randomly transmitted to the recipients, originating from the connection in question. without a disturbance being noticeable.

For this purpose 2 sheets of drawings

Claims (7)

Patent claims: 1. Method for asynchronous message transmission, pulse-delta-modified message information in a telephone. in particular Fernspreclivermiltlungsanlage. between at least two subscribers cine ¹ group \ on subscribers, marked by ii, that the pulse-modulated message information can be blocked in addressable form by means of call numbers. such as 1.1, the digitally encoded ι jesprächsnummeni of the respectively at a Verbindum: participating Participate: in which Speieher regis trie ^r! and Dall the GespraciiMiummei u in Purallelfoim / usamnien with the pulse delta modulated N'achriehieninl'ormaiioiien to all 'eilüehmeispeieiie:'! the beuetlenden group are transmitted, b 'identity of each written in the relevant memory conversation numbers are a Empiang the pulse delta modulated information. 2. Circuit arrangement for performing the method according to claim I, characterized by a control unit (Ci '') with means (CC, LC, A 20). who select a call number from a number of call numbers when establishing a connection, and are marked with means (A 26) which forward the selected call number to those η subscriber equipment between which "a V." connection is to be established, and dad'irch that each subscriber equipment (A ' [ to S 256) has a delta modulation transmitter (Ma, Mb) and a delta modulation receiver (Da, Db) and registration means (CNa, CNb) for registering the dialed call number, means (A 1 a, Alb) for Transmission of the registered call number together with each message element to all subscriber status information and a comparison device (E la, Ei b) which compares each call number received from a subscriber equipment with the call number registered in the registration means (CNa, CNb) , and that activation medium (A 3 a, A 3 b ) activate the named recipients (Da, Db) if between the received and the registered call number matches. 3. Circuit arrangement according to claim 2, characterized by a switching device (R). which during mu alternating periods of time the participant equipment (S 1 to S 256) connects to each other for the transmission of signal elements between the subscribers and the subscriber equipment with the control unit (CU) for transmitting control information between the control unit and the subscriber equipment. 4. Circuit arrangement according to claim 2 or 3, characterized in that each subscriber equipment has a line number register (LJVa, LNb) in which the line number belonging to the subscriber in question is registered, and characterized in that the comparison device (E 1 a, Eib ) compares the line number registered in the line number register (LNa, LNb) with each control information transmitted from the control unit (CU) during those time periods which are intended for a transmission of control information between the control unit (CU) and the subscriber equipment in order to determine whether the .Control information is intended for the subscriber. 5. Circuit arrangement according to one of claims 2 to 4, characterized in that the system has a Läutesignalkodegenerator, which constantly sends a Läutesigr.alnummer (RSN) together with a ring signal representing Signals.ement to all subscriber equipment that the control unit (CU) Means (.VA'2) for registering the ringing signalnunimer in the registration means (OVa, CNb) of each called subscriber , so that in those subscriber equipment in which a match is determined by the comparison device (EIa, E 1 b) between the ί äutesignalnumrner registered in the registration means (OVa, CNb) and the ringing signal number which is sent out by the ringing signal code generator, the demodulation device (Da, Db) is activated in the same way as when other signal elements are received. 6. Circuit arrangement according to one of claims 2 to 5, characterized in that the control unit (CU) has a ringing tone code generator which is connected to a calling subscriber and signal elements representing a ringing tone together with that in the registration means (CNa, CNb) of the calling subscriber registered call number, and that the signal elements representing the ringing tone are demodulated in the same way as those of other signal elements. 7. Circuit arrangement according to one of claims 2 to 6, characterized in that the participants are arranged in groups (Gl, Gl) , that the Teilneiimerausstattungen belonging to the same group are directly connected to each other during the certain time periods for transmitting signal information, that each Group has a translation register (ACl, ACl) with a memory cell for each possible call number in its own group, in which a call number is stored that belongs to a subscriber belonging to another group with which. a connection has been established so that when a subscriber sends out a specific call number for a subscriber in another group together with a signal element, the transmitted call number in the translation register (AC 1, ACl) is replaced by the call number contained in the other group is valid and stored in the relevant memory cell, and that the control unit (CU) has means with which the call number is stored in the translation register (ACl, ACl) of the relevant group, which was selected for the other group, which storage in that Cell that corresponds to the dialed number in its own group when a connection is established between subscribers belonging to different groups. 3 4 S. To handle the circuit arrangement after one of the advertisement talks, which the plant Proverbs 2 to 7, characterized in that no more than normal conversations / wipe ak: each participant group (C, 1st Gl) influence a puller participant. register (BR 1, BR 2), in which the for The method according to claim 1 in a different group certain signal elements in 5 telecommunication system through a circuit arrangement of the proper sequence of the own according to claim 2 a development. The entire group is stored and that the "-tiiltiing of the arrangement according to claim 2 in the control unit indicating means for the onward connection with 3 is achieved, duLl thereby. D;". The Leitu "j £ of the signal elements from the desk register Subscriber equipment alternately niiteinandei [BR \, BR 2) , so that the forwarding is carried out in order to transfer the message information and from different register registers in a cyclical manner with a control unit for transferring the Sicuer sequence. information can be connected to one fncliMC '). Circuit arrangement according to one of the submission possibilities, in order to ermitsprüche 2 to S. dadurcli characterized that teln. . is intended for information which Teilnehmeraussiattung a Sleuerjede subscriber group (Ci 1. (Ί 2) control circuits 15 feed the appropriate (Rl Rl A 70. A 71. A 80. A 81), has the Trained Teilnehmeraiisstattungen according to claim 4..! - by the timing means in the control unit del. In the embodiment of the arrangement, the arrangement is activated after a s> o, so that the transmission of In- of claims 5 and 6 is additionally achieved, since 1.1 formations between subscribers of the same d? s calls are simplified, that in the case of the coming group during certain, periodically repeated time multiples: n, repeated time periods (/ 0) occur for each participant, in which a special point in time is required Arrangement according to correct information in the buffer registers formed one of claims 7 to 9, whereby (BRl, BR 2) takes place while the transmission it is possible to send messages between hen several groups of information from the relevant buffer 2t pen of participants to transmit, register to other groups within time. In the drawings the th time periods are separated, and that FIG. 1 shows the application of the Fr control of the various group alternations in a telecommunications system in which an as \ nselnd during a single time period (u 1, 30 chrone Delta modulation is used, and is carried out in the μ 2), which is separated from those signal elements forwarded between subscribers periods in which the information is transmitted to the same group of subscribers. belong, 2a to b show two subscriber equipment in the telecommunications system, F i g. 3 a control unit in the system for establishing connections between participants, F i g. 4 shows the activation of line The invention relates to a method and a terdrähten in the transmit and receive lines Circuitry for asynchronous messages 40 at various times during manufacture Transmission of pulse delta modulated message information a connection and the mations in a telecommunications, in particular telecommunications F i g. 5 shows an illustration of a system for the telephone exchange system, between at least two routing of delta-modulated signals between subscribers of a group of subscribers. participants belonging to different groups of participants The German patent specification 1,299,734 includes 45 subscribers. Circuit arrangements have already been proposed in FIG. 1 shows the application of the invention to which digital address numbers are sent out with in a telecommunications system in which an asynchronous subscriber store stored address numbers is used, and ^: n which the. Be signal possibilities. As a result of the German disclosure elements between subscribers forwarded to werschrift 1 804 624, telephone systems are also restricted which are known to the same group of subscribers in which synchronized subscriber stations are listening. The invention, however, is not restricted to delta modulation asynchronous with a loop-shaped closed line, but can be bundled and in which a calling subscriber can use one of a timer station as free in any type of time-division multiplex system , ie also on systems in which a marked multiple channel! proven. Pulse amplitude modulation and a 55 ^ Impulskode-In the former arrangement, the address numbers used modulationbenutztwird.MehrereTeilnehmersindüber and only for making a comparison eineeit.zelneTeilnehmerschaltungSl to 5 256 at a single bond with the second-mentioned check-in subscriber circuit S 1 to S 256 can be a binge only synchronous time division systems shared transmission multiplex line ί and connected to a common ground. 60 same reception multiplex connection r connected. According to the invention, each subscriber is based on the object of providing pulse delta modulated messages to the line / transmitted information signal directing information between at least two subscribers with a call number, with the informant to a group of subscribers with the calling number. 65 the line r to all subscriber equipments S 1 Since the method according to the invention does not run any time to 5,256. Only those subscriber multiple contact « ¹ required, it is possible to equip equipment that can be used to receive the transmitted asynchronous delta modulation and that have been set up with a call number.