GSM 11.11 version 6.2.0 - TTFN Smart card pages
GSM 11.11 version 6.2.0 - TTFN Smart card pages
GSM 11.11 version 6.2.0 - TTFN Smart card pages
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(<strong>GSM</strong> <strong>11.11</strong> <strong>version</strong> <strong>6.2.0</strong> Release 1997)114TS 100 977 V<strong>6.2.0</strong> (1999-05)Case 2: Simple with short delayNetworkME<strong>GSM</strong>SIMSIMApplSMS SIM_Data_Download/Class_2ENV(SMS)(SMS)‘60’ (‘60’)‘60’ (‘60’)‘9000’(‘9000’)SMS AckThis shows the simple case where an SMS for SIM updating is received from the network, passed to the SIM by the MEand which requires some time to process by the SIM application. The processing time is "not long" and is obtained bythe SIM application sending "null procedure bytes" to the ME. Each byte has the effect of restarting the work waitingtime so that the ME does not abort the transaction before the SIM application has finished processing the command(s)sent in the SMS.Guidelines on timings:1. The SMS Ack must be sent back before the network times out and sends the SMS again.2. Use of null procedure bytes must not be excessive as during this time the ME is unable to issue normal <strong>GSM</strong>commands to the SIM.ETSI
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