GPRS Call Flow Ppt

GPRS Attach:  MS

BSS

SGSN

HLR

1. Attach Request 2. Security Procedure 3. Security Procedure 4. Update Location 5. Insert Subscriber Data

6. Insert Subscriber Data D ata Ack 7. Update Location ack.

:  PDP Context activation :  MS

BSS

SGSN

DNS

GGSN

RADIUS

1. Activate PDP Context  APN

2. DNS Query  APN

3 . DNS Response GGSN IP Address

4 . Create PDP Context Request 5.Authentication/accounting request. 6.Authentication/accounting response 7 . Create PDP Context Response IP Address

8. Activate PDP Context Accept IP Address

PDP Context activation  –  – In Roaming  AIRTEL MS

BSS

GRX

SGSN

DNS1

GRX DNS

GRX

Roaming Partner  DNS2

IP BACKBONE

1. Activate PDP Context  APN

2. DNS Query 3. DNS Query  APN 4 . DNS Response IP Address of DNS2 DNS2

5. DNS Query

6 . DNS Response 7 . DNS Response

GGSN IP Address

GGSN IP Address

8 . Create PDP Context Response

9 . Create PDP Context Request 10. Activate PDP Context Accept IP Address

IP Address

GGSN