PROTOCOLES DE ROUTAGE: pour rôle l’échanges des informations de routes calculées par les Tâches d’une passerelle IP. Pour chaque datagramme IP qui traverse une passerelle, le protocole IP: . Niveau 2: HDLC. Niveau 3: X In this course, we discuss peer-to-peer protocols and local area networks. Part one in this course is to answer the question of how does a peer-to-peer protocol. The field of the invention is that of data transmission in the telecommunications sector, according to the ISO standards track protocol, particularly according to the .
|Published (Last):||5 July 2017|
|PDF File Size:||9.11 Mb|
|ePub File Size:||9.56 Mb|
|Price:||Free* [*Free Regsitration Required]|
Method for handling redundant switching planes in packet switches and a packet switch for carrying out the method. He suffers no advance FIFO 88 if the channel is empty, and is incremented otherwise. So it was possible, even necessary, to deal separately with each channel, the multiplication of components 41, 42, 43 on several parallel tracks only offset by the permitted and configuration flexibility.
Then when the logic 94 generates courx signal 93 applied to the memory 85, 86, optionally the information incremented by the incrementer 90 is reregistered to an address which is then still that of the considered channel. Demand assign multiplexer providiing efficient demand assign function in multimedia systems having statistical multiplexing transmission. Le processeur de gestion 61 comporte en outre d’autres fonctions: The data stored in the FIFO 73 is then read by the means 74 of analysis and processing of words.
In a preferred embodiment of the invention, said means for analyzing and word treatment include, for addressing said channel information memory, determining means of the channel number of the received current word, cooperating with means for writing said channel information in the memory and reading of said means to channel information of said transcoding means.
The embodiment of the inventive system will be described more precisely in relation to a data switch as shown in Figure 5. MIC coupler further comprises firstly a local memory 63, and secondly two processing branches 64, 65 respectively corresponding to the receiving module and the coupler transmitting module.
Connection to a PCM link 10 is effected hvlc a PCM coupler 57 preferably connected in parallel to two buses 52, Another object of the invention is to provide such a system for receiving and processing frames, together with a standard processor, reduces the execution time of repetitive frames of analysis.
The data is transmitted in successive blocks of bits, being repeated endlessly, the type of the block shown in Figure 3. Furthermore, said transcoding means also advantageously have an input for receiving status information corresponding to the occurrence of a synchronization signal, said information being supplied by said HDLC decoding means for each synchronization byte of the received PCM frame.
In each PCM frame, each channel sees reservations same predetermined rank byte. Are already known HDLC frame receiving systems transmitted over such channels MIC, comprising either a machine specialized from slice processors or a plurality of processors each assigned to a channel of the PCM link. BE Free format text: The invention also aims to provide for such a system, a wired device, simple design, fast operation, and supports the cohabitation of different procedures simultaneously on the PCM channels eg CCITT n7 and X The ROC field is reset on event “end of frame or fault detected”, but keeps its value to “incomplete byte”.
Each of the lines 44 corresponding to a distinct channel feeds a common memory remultiplexing 47 which concentrates the decoded frames 48 before they are transmitted on a 50 processing bus 49 with processor 3 ISO level. La fin du signal 96 produit le signal transitoire 88 qui provoque l’avance du compteur de voies The processing device preferably further comprises means for triggering the prootocole cycle of the means for analyzing prootcole processing prootcole, after execution of the current word processing cycle.
An advantageous embodiment of the structure of the means 74 of analysis and processing of words is shown in Figure 8. SE Free format text: Method and apparatus for converting data packets between a higher bandwidth network and a lower bandwidth network having multiple channels.
A1 Designated state s: As already noted, the PCM link supports 32 time intervals. The end of the signal 96 produces the transient signal 88 which causes the advance of the line counter System according to claim 1 characterised in that said word analysing and processing means 74 comprise means 85; 90 for counting the number of bytes received for each HDLC frame received on each channel and in that the number of bytes is supplied to said transcoding means 80 in order to identify specific processing of each byte according to the location of the byte in the frame.
The transcoding memory 80 works in cooperation with the following modules: System according to claim 1 characterised in that said transcoding means 80 have an input for status information 72 corresponding to the occurrence of a synchronisation signal, said information 72 being supplied by said HDLC decoding means 70 for each synchronisation signal of the received PCM frame.
The means 70 dispose the data received from the PCM link, their HDLC envelope and provide relevant data in an amount of information per time interval e. System according to claim 1 characterised in that said automatic processor comprises means for triggering each new cycle of said word analysing and processing device 74 triggered after performing each of the word processing cycles.
Preferably, the analysis means and word processing includes counting means the number of bytes received for each HDLC frame received on each channel, and said number of bytes of information is supplied to said transcoding means for identifying a specific processing of each byte according to the rank of this byte in the complete frame to which said byte belongs.
System according to claim 1 characterised in that it comprises a FIFO memory 73 between said frame receiving means 70 and said word analysing and processing means Lapsed in a contracting state announced via postgrant inform.
The advance takes place at the end of cycle, which allows the use of common components. Elementary switch for automatic switching unit using an protocple multiplexing technique. AT Date of ref document: B1 Designated state s:
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.