PACKET INTERMEDIATION CALL SET-UP METHOD OF ISDN SWITCH

摘要

41-51 assigning the sending call id number when receiving the X.75 call request packet from a relay sending switch, arranging a sending call table and a control packet buffer, analyzing the send/receive signal and checking a network utility, and requesting a link connection to request a number translation; 52-55 selecting a route according to a relay route status, choosing a connection link by requesting the receive call control request and transferring the receive PHM number and the link number into a send process; 56-60 storing the receive PHM number and the link number transferred from a receive process; 61-74 assigning the receiving id number and the inner call id number when receiving the call request packet for inner transmitting from the send process, storing the send processing information by arranging the receiving table and the control packet buffer, checking the network utility by separating the header of the call request packet, and transferring the call request packet into the relay sending switch; 75-87 checking the call connection packet, deciding the receive process control variable, arranging the receive data packet buffer, and transferring the call connection packet into the send process; and 88-100 deciding the send process flow control variable and the packet size for transmitting, arranging the send process data packet buffer, and transferring the send process call connection packet into the relay sending switch.