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Cisco Cisco ASR 5000
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▀ Contents
▄ SGSN Administration Guide, StarOS Release 18
SGSN Support for RAI Based Query ................................................................................................. 93
SGSN Support For Sending Extended Bits Bi-directionally ............................................................... 94
SGSN support to Ignore PDP Data Inactivity ..................................................................................... 94
Short Message Service (SMS over Gd) ............................................................................................. 94
SMS Authentication Repetition Rate .................................................................................................. 95
SMSC Address Denial ........................................................................................................................ 95
Status Updates to RNC ...................................................................................................................... 95
Topology-based Gateway (GW) Selection ......................................................................................... 95
Threshold Crossing Alerts (TCA) Support .......................................................................................... 95
Tracking Usage of GEA Encryption Algorithms ................................................................................. 96
VLR Pooling via the Gs Interface ....................................................................................................... 96
Synchronization of Crash Events and Minicores between Management Cards ................................ 97
Zero Volume S-CDR Suppression ..................................................................................................... 97
How the SGSN Works ............................................................................................................................ 98
First-Time GPRS Attach ..................................................................................................................... 98
PDP Context Activation Procedures ................................................................................................... 99
Network-Initiated PDP Context Activation Process .......................................................................... 101
MS-Initiated Detach Procedure ........................................................................................................ 102
Supported Standards ............................................................................................................................ 103
IETF Requests for Comments (RFCs) ............................................................................................. 103
3GPP Standards ............................................................................................................................... 103
ITU Standards .................................................................................................................................. 108
Object Management Group (OMG) Standards ................................................................................ 109
SGSN in a 2.5G GPRS Network ..................................................................... 111
2.5G SGSN Configuration Components ............................................................................................... 112
The SGSN_Ctx ................................................................................................................................. 112
The Accounting_Ctx ......................................................................................................................... 113
How the 2.5G SGSN Works ................................................................................................................. 115
For GPRS and/or IMSI Attach .......................................................................................................... 115
For PDP Activation ........................................................................................................................... 116
Information Required for the 2.5G SGSN ............................................................................................. 118
Global Configuration ......................................................................................................................... 118
SGSN Context Configuration ........................................................................................................... 120
Accounting Context Configuration .................................................................................................... 121
SGSN 3G UMTS Configuration ...................................................................... 123
3G SGSN Configuration Components .................................................................................................. 124
For GPRS and/or IMSI Attach .......................................................................................................... 125
Information Required for 3G Configuration ........................................................................................... 126
Global Configuration ......................................................................................................................... 126
SGSN Context Configuration ........................................................................................................... 128
Accounting Context Configuration .................................................................................................... 130
SGSN Service Configuration Procedures .................................................... 133
2.5G SGSN Service Configuration ....................................................................................................... 135
3G SGSN Service Configuration .......................................................................................................... 137
Dual Access SGSN Service Configuration ........................................................................................... 139
Configuring the S4-SGSN ..................................................................................................................... 141
Configuring an SS7 Routing Domain .................................................................................................... 143
Configuring an SS7 Routing Domain to Support Broadband SS7 Signaling ................................... 143
Example Configuration ................................................................................................................. 143
Configuring an SS7 Routing Domain to Support IP Signaling for SIGTRAN ................................... 144
Example Configuration ................................................................................................................. 145
Configuring GTT ................................................................................................................................... 146
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