IL47446A - Communication system - Google Patents

Description

Communication system mission station given a receiving register II register in which the subscriber address call from reception effected or to which transmission is In connection the two addresses ere tbe in t case of conference connection they Let it assumed that conference conversation la to be up between the subscribers 2D who connected to a loop 1 without Tbe of 1 reproduces local position in the loop while 2 the stations communicate after tbe convseration set tbe station A receives from G end transmits to B receives and transmits to C9 and so e tbe set up of tbe connection tbe consents of the transmitting registers of tbe receiving registe of the individual stations in She stations thus lie in conference the of generally greate than of the switching and in the of scribers to the conference conversation amounts to between 1 and of the length of the switching In 4 1 is a loop in digital form circulate in 2 are subscriber stations which into One of these namel the telephone subscriber represented as block 3 is a monitoring which connected tbe loop and which not of In tbe subscriber is tbe lb tbe outgoing Tbe incoming line is connected to a timing circuit 4 to tbe input of a store This la a shift register into controlled by tbe timing on ere reed where pushed forward in the some rhythm or Finally tbe incoming line is to en electronio three position switch wbioh actuated by control circuit switch connects tbe outgoing line lb in first position to the line the seoond position to tbe output of transmission store in third one to tbe output of the receiving store Tbe capacities of the receiving store 5 and of tbe transmission store 0 are of Tbe decoder 9 decodes tbe content of the receiving store 5 and upon the ascertainment of certain bit signals to the control circuit store 5 and transmission store 3 are further to a message circuit which serves as intermediate member to the subscriber set 11 and tbe remaining circuits of tbe subscriber This circuit receives messages from the receiving store 5 and converts them into signals which can be picked up by the subscribe buzzing sounds or speech receives from the subscriber signals and speech which it converts into messages and forwards to mission store which composed of the of the sender a signalling code and apart from a further The fourth column the register contents of the reoeiver prior to and after receipt of the signal the column th signal dispatched thereupon from the station With o signal the address in the corresponds with reoeiver in others it does no A further is designated An empty indicates that the content thereof of no importance the Each line explains one type of Line It cal X to telegram X 1 Upon the selection of a number by the calling subscriber the selected or dialled e transferred into the transmitting register of designated briefly as A X is the receiver if it is line the address of the is written the and the transmitting register and a signal Y 2 X sent If it is not fre Z9 line nothing line if a calling station Y receivea the oircuit causes the ringing tone signal to be beard in the telephone receiver of th if it receives no the sound line set up X to released Subscriber therewith orders the subscribe T to store the X in the receiving register if the eddress previously stored there not equal himself to dispatch s set up connection Z address stored in the transmitting register of the set up of connection Z is equal to in t the signal brings st the the end of the ringing tone Line signal released by key V actuation of this key brings about in the transmitter transfer of the transmitting register content into the auxiliary register A the clearing of the receiving Moreover β signal ΧΘ which the request upon the subscriber in whose receiving register the X is stored to clear this register furthermore himself to retransmit holding signal Y8 4 If nothing 4 signal X132 released by key key for initialising of the multiple Its actuation in station has the result that a is with the eddress from the additional which is thereupon set to The signal reoeived by the station in whose receiving the address of the transmitting station stnnde the eddress from the additional register of the sender is written into the transmitting register of the receiver receiving station sends a signal to subscriber address stands in its Line of signal X7Z released up of the Upon hang up of the telephone the receiving address register is set to 0 a signal X7Z is in which Z is the address stored in the tra smitting address register This received b the station in whose transmitting register the address X in other words in the of loop connection the preceding station in the the address X is replaced by the address and a set up signal is With the of signalling optionally conversations can be set as will be shown by one In this for it is assumed that the subscribers called pre always The connection set up is illustrated with the aid o in which in the second the releasing the third the signal the fourth the signal the fifth the signal receiver are indicated the furthe columns reproduce the contents of the of the transmitting address registers of the receivin address registers and of the additional registers calls After completion of dialling the seleoted address A stands in the transmittin address register A call signal B1A is which is received by A end brings the recording tbe address in tbe transmitting address register receiving address register A replies with signal i received by and releases the ringing tone Second soon a set up signal A3B goes B and brings about recording of tbe A thereupon sends a set up signal which has no effect at since tbe address B already stands tbe receiving address register tbereo Thus a connection between A and B is set Third to b steps incorporates C into tbe Third stept B which causes transfer of tbe address bis transmitting address register into tbe auxiliar register at the time sets tbe receiving address register to A signal is which is received by since in tbe receiving address register tbereof tbe address B This is set to dispatches signal which is received nobody since tbe address A stands in no address receiving register Fourth tbe way as in steps 1 2 with A now B establishes connection with In this connection bereinunde the free signal Z2 and so forth is not since it is of no consequence for After the set up of the connection with on the a signal B13A is dispatched and received by since B in receiving The address A contained in the signal is written into the transmitting address register of 0 dispatches signal which is received by A and brings out the recording of C in A for his part a signal which is received and inscribes the address A 33 dispatches in conclusion additionally a signal which no effect since B stands in a conference connection is set in from C and sends to B receives from and sends to 0 receives from B sends to of the three subscribers drew further scribers into the if hie set is fitted with en auxiliary address register the circuits for the dispatch of the signals with the code numbers 8 nnd In steps 6 to Q9 incorporates the station The pattern corresponds to stops 3 to By this the set up of conference ring in with 2 is ste If A bangs up the receiver9 is set to and a signal is signal received by station in the address register of which A is replaced by contained in 0 thereupon dispatches a signal which received and writes C into the ing address Λ the Tenth Corresponding procedures course if C u then only 3 and D in the the of information the conversation there ore of which will be with the of e figure represents switching networks of a station which needed for the transfer of the conference conversatio in with the method method based on the fact respectively only the o a speaking subscriber re conducted to the other subscribers via the If the subscriber then another subscriber take over the effecte in accordance with specific sound level In is the incoming lb the outgoing 16 a switch which connects the outgoing line lb either to the incoming line or to the transmitting circuit 18 to digital the and receip of signals the stations of conference loop e coupled in such way the switch 16 is only in one of the stations the others on Also upon retransmission the addresses in the conference signals are the circuits necessary for this nre not shown in the Connected to the line is converter which converts the to the into analogue signals which go to the telephone receiver 15 and the time to rectifier filter The conversation information arriving the on line to a reotifier low filter outputs of the two low filters connected to 1 which upon of the criteria via a switoh control olrcuit 20 switches the switch to Prior to the transmission from converter 10 signal is dispatched by circuit 21 signal ver the previously subscriber to information signal is on in the conference ring from one subscriber to the in which connection respectively the address is The signnl finally arrives the station which dispatched it the switc 16 of which are Since this is the only in one of the stations in the conference each it started from itself and it does not it insufficientOCRQuality

Claims (1)

1. is system for transferring s which connected in into s loopff on without conn net in that in the case o subscriber the o one other subscriber stored in via which the d signalling information is contain at least one one code are subscriber only when the address contained in the signal corresponds with sn sddrese stored fi in which connection in the conversation state the ch the content of whic depends o the produced received by rt in the of connection between several subscribers a conference ring is in the of which subscriber receives from second subscriber e third subscriber and each signal received by subscriber is to the nex one until it to the first A for transferring sa in 19 characterised subscriber in the conference loop contains device which the level of the incoming of its own with each in accordance with preset end amplitude criteria initiates of station to nt the signal which in the conference owe to nest about the of the speaking subscribe from transmitting to ao in the conference ring respectively only the signals emanating one subscriber for the set up of conferenoe conversation by incorporating further subscriber into conversation between connected to one another in accordance with in the subscriber who wishes incorporate a subscriber into en existing connection deposits the address of the most two subscribers direct oorcnjunicetion with him into auxiliary sets up connection with the further subscriber and of the address so that be up the connection with the subscriber identified by A as in characterised in upon the withdrawal o a from the conferenoe this latter the address of one of the two s with he is in direct to the other induces to up the direct connection with the subscriber identified by the address A communication before with to and in For the Applicants Wol f Bregman and Gol insufficientOCRQuality