GSM R - University of Houstonklong/posters/gsm.pdfABIS Stacks < MAP TCAP sccp MTP HI-R ISUP psTN...
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GSM R - University of Houstonklong/posters/gsm.pdfABIS Stacks < MAP TCAP sccp MTP HI-R ISUP psTN 8 ... GSM CM MM LAPDm MS Protocol LAPDm BTS ... TRAU TRX Public Switched Network