# intelligent Gb Routing System

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Descriptions

iGRS (intelligent Gb Routing System) is an intelligent Gb router. iGRS is inserted between the BSC and the SGSN to monitor and to route the Gb traffic. iGRS extracts the IMSI from the attach request message of a GPRS user to check his user type from the iPALIM. iGRS inquires the user type of an IMSI from the iPALIM through the iPi (iPALIM inquiry) interface. After knowing the iPALIM user type, iGRS will route the attach request to the corresponding SGSN according to the user type and location (Routing Area Identity). iGRS is transparent to the BSC and the SGSN.

The principle benefits of the iGRS include:

•Enable iPALIM to support GPRS.

•Aggregation of BSC Gb to enable sharing one SGSN Gb by multiple BSC.

•Redirect Hybrid Users to a particular GGSN by APN replacement. APN replacement function also enables Hybrid User to use the local GPRS service without changing the internet setting in his mobile device.

•Allow operator to apply the Captive Portal technique to redirect iPALIM users to special web page for local service promotion or GPRS service billing by payment gateway or curbing internet traffic.

See Also

• iGRS Parameter Dictionary

Feature List

Feature | Descriptions
Capacity | Gb interface: •256 BSCs •8 SGSNs Subscriber: •100k online GPRS users Traffic: •200k attach per hour •200k RAU per hour •200k PDP context activation/deactivation per hour
Interface | Gb interface to BSC and SGSN SNMP interface to EMS (Element Management System)
Basic Services | Gb routing •Mobile to GSN •GSN to Mobile •ID request APN (Access Point Name) replacement
License Control | Application flag 1 to 256 BSC Gb in the increment of 1 1 to 8 SGSN Gb in the increment of 1 100 to 100k GPRS subscribers at multiples of 100
Operation and Maintenance | SNMP network management IE browser client console Web page based graphic user interface Real time status display System parameter maintenance Organized call measurements and operation logs

iGRS Parameter Dictionary

Parameter | Definition | Range
System | -- | --
•System ID | Specify the System ID of the iGRS. | 0 - 255
•Primary PALIM IP | IP address of the master iPALIM connecting to iGRS. | Dotted decimal format
•Secondary PALIM IP | IP address of the slave iPALIM connecting to iGRS.
BSS | Create virtual connections between iGRS and BSS. | Max 256 items
•Administration State | (Read Only) Control the operation of the managed interface. | •Locked •Unlocked
•SNS Type | Specify the type of subnetwork service sub-layer. | •IP •Frame Relay
> NSE | Network Service Entity | 1 item
•Administration State | (Read Only) The state of the current setting entry. | •Locked •Unlocked
•NSEI | Specify network service entity identifier (NSEI) to identify the NSE. | 0 - 65535
>> NSVC | Network Service Virtual Connection | Max 2 items
•Administration State | (Read Only) The state of the current setting entry. | •Locked •Unlocked
•Blocking Status | (Read Only) The block status of the current setting entry. | •Blocked •Unblocked
•Alive Status | (Read Only) The running status of the current setting entry. | •Alive •Dead
•NSVCI | Specify network service virtual connection identifier (NSVCI) to identify the NSVC. | 0 - 65535
•Local IP | IP address of the iGRS. | Dotted decimal format
•Local Port | iGRS transmission port for the virtual connection. | 0 - 65535
•Peer IP | IP address of the BSS. | Dotted decimal format
•Peer Port | BSS transmission port for the virtual connection. | 0 - 65535
SGSN | Create virtual connections between iGRS and SGSN. | Max 8 items
•Administration State | (Read Only) Control the operation of the managed interface. | •Locked •Unlocked
•SNS Type | Type of subnetwork service. | •IP •Frame Relay
> NSE | Network Service Entity | Max 255 items
•Administration State | (Read Only) The state of the current setting entry. | •Locked •Unlocked
•NSEI | Specify network service entity identifier (NSEI) to identify the NSE. | 0 - 65535
>> NSVC | Network Service Virtual Connection | Max 2 items
•Administration State | (Read Only) The state of the current setting entry. | •Locked •Unlocked
•Blocking Status | (Read Only) The block status of the current setting entry. | •Blocked •Unblocked
•Alive Status | (Read Only) The running status of the current setting entry. | •Alive •Dead
•NSVCI | Specify network service virtual connection identifier (NSVCI) to identify the NSVC. | 0 - 65535
•Local IP | IP address of the iGRS. | Dotted decimal format
•Local Port | iGRS transmission port for the virtual connection. | 0 - 65535
•Peer IP | IP address of the SGSN. | Dotted decimal format
•Peer Port | SGSN transmission port for the virtual connection. | 0 - 65535
Routing Area | -- | Max 1024 items
•MCC | Mobile Country Code. | Numeric max 4 digits
•MNC | Mobile Network Code.
•LAC | Location Area Code. | 0 - 65535
•RAC | The Routing Area Code identifies a routing area within the specific location area.
•Administration State | (Read Only) Control the operation of the managed routing area. | •Locked •Unlocked
> Routing Table | -- | --
•User Type | (Read Only) iPALIM user type. | •Private •Public •Hybrid
•Administration State | (Read Only) The state of the current setting entry. | •Locked •Unlocked
•SGSN ID | Specify ID of the serving SGSN virtual connection. | 0 - 7
•APN Replace Flag | Enable or disable replace the current access point name. | •Enable •Disable
•APN | Specify the modified APN if the replace flag is enabled. | --
> BVC Mapping | BSSGP Virtual Connection | Max 16 items
•NSEI | Specify the value of Network Service Entity Identifier. | 0 - 65535
•BVCI | Specify the value of BSSGP Virtual Connection Identifier.
•Administration State | (Read Only) The state of the current setting entry. | •Locked •Unlocked

Return to

• Tasks List

• Elements List

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