Labels:crt screen | earth | grass | lemon | sky | window | windowpane OCR: Sending Ti max. Outgoing end T. min T Receiving t t : + t. Receiving Incoming end min. Sending CCITT-48460 Tane-on or -off pending circuit state in which release starts isee Legend Propagation time Overall response time of signalling sender ard receiver Rt ecognition time [nterra] operating time FIGURI 5/Q 412 Releasc guard sequence Propa signa Hing Recognition FiGirE