It also like voice call. However or when you trying to use the GPRS or packet data services that will occupy whole 64kbps. i hope you will know about voice call flow.
In BTS, they will use EVDO card for particularly Data purpose and some vendor equipment same card will control 1xcall ( Voice call ) and data.
Little Bit more wide:
-AT Request to AN(UATI request)
-AN sends UATI Assignment to AT.
-Session establised after UATI assignment.
-Authetication for access to AN AAA server.
– Establish link btwn AN & PCF.
-Establish link btwnPCF to PDSN.
– Establish PPP connection btwn PDSN to AT & start TX Data.
Pls. correct if i am wrong.
Thanks
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