Cisco ASR 5000 Series - Page 176

ASN Gateway Overview
▀ ASN Call Procedure Flows
▄ Cisco ASR 5000 Series Product Overview
OL-22938-02
Figure 45. Initial Network Entry and Data Session Establishment with Authentication Call Flow
H-AAA
Server
ASN BS
ASN-GW/
Authenticator
MS/SS
1
2
4
3
7
10
5
11
15
14
12
16
13
6
8
CSN/PDN/
Internet
9
DATA
Table 30. Initial Network Entry and Data Session Establishment with Authentication Call Flow Description
Step
Description
1
MS performs initial ranging with the BS. Ranging is a process by which an MS becomes time aligned with the BS. The MS
is synchronized with the BS at the successful completion of ranging and is ready to set up a connection.