This slide will give you a brief idea about how the calls originate and terminate on your CDMA MS.

1. Presented By: Mukesh Kumar

5. ) ) ) ) ) ) ) ) ) ) ) Registration message ( ( ( ( ( ( ( ( ( ( ( Registration accept order Location update request Location update accepted MSC BS MS LOCAL REGISTRATION

8. MSC BSC BTS PAGING ACCESS PAGING TRAFFIC CHANNEL Receiving an incoming call Page message is sent on PCH MS responds on Access channel Channel assignments on paging Mobile gets a traffic channel

11. Paging channel MS Access channel Forward Traffic channel Reverse Traffic channel Base station ack. order Channel assignment message General page message Continuous frames of all 000’s Base station ack. order Service connect message Page response message Traffic channel preamble: Frame of 000’s Mobile station ack. order Service connect complete message Mobile Terminated Call

12. MTC/MOC BTS MS paging request channel request immediate assignment paging response authentication request authentication response ciphering command ciphering complete setup call confirmed assignment command assignment complete alerting connect connect acknowledge data/speech exchange BTS MS channel request immediate assignment service request authentication request authentication response ciphering command ciphering complete setup call confirmed assignment command assignment complete alerting connect connect acknowledge data/speech exchange MTC MOC

15. Paging channel MS Access channel Forward Traffic channel Reverse Traffic channel Base station ack. order Channel assignment message Continuous frames of all 000’s Base station ack. order Service connect message Origination message(By probing) Traffic channel preamble: Frame of 000’s Mobile station ack. order Service connect message complete Mobile Originated Call

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