Signaling protocol for a noisy communications channel

Details Signaling protocol for a noisy communications channel Signaling protocol for a noisy communications channel

H - Electricity

04

L

H04L 29/08 (2006.01) H04L 1/18 (2006.01) H04L 29/06 (2006.01) H04L 1/12 (2006.01)

Patent

CA 2145701

The retransmission of signaling messages that data terminals (e.g., modems) might exchange prior to exchanging user data is controlled by arranging a data terminal that receives multiple copies of the same signaling message so that it saves only the first copy thereof, but transmits a response to the sending terminal following receipt of each such copy. The sending terminal terminates its transmission of the signaling message upon receipt of a response from the receiving terminal. The inventive procedure is especially advantageous for controlling theretransmission of signaling messages during a n-way handshake between two terminals.

La retransmission des messages de signalisation que les terminaux de données (par ex., les modems) peuvent s'échanger avant la transmission des données des utilisateurs est contrôlée en configurant un terminal de données qui reçoit de multiples copies du même message de signalisation de façon qu'il ne sauvegarde que la première copie de ce message et transmette une réponse au terminal expéditeur après la réception de chacune de ces premières copies de message. Le terminal expéditeur met fin à la transmission du message de signalisation quand il reçoit la réponse transmise par le terminal récepteur. La procédure de l'invention est particulièrement utile pour contrôler la transmission des messages de signalisation lors de l'établissement d'une communication à n entrées entre deux terminaux.

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