This feature uses an IMSI to send a ReadyForSM to the HLR and handles the response

Feature cheat sheet

Feature Name Network Operator Data Used in PlanId(s) Stateful or Stateless POJO Feature or SBB Feature

IPSMGWReadyForSM

No

SMMA, Sh_PNR, register

Stateless

POJO

Session Input variables

The feature reads the following fields in Session State

Session State variable name Variable type Comments 
IMSI

String

The IMSI to use in the ReadyForSM operation

 
MSISDN

String

The MSISDN to use for addressing the HLR by GT

 
SRI4SMResult

enum

Indicates if the SendRoutingInfoForSM request has succeeded. Allowed values are NOT_ATTEMPTED, SUCCESS, and FAILED

Session Output variables

The feature sets the following fields in Session State

Session State variable name Variable type Comments 
ReadyForSMResult

enum

Indicates if the ReadyForSM request has succeeded. Allowed values are NOT_ATTEMPTED, SUCCESS, and FAILED

 
ReadyForSMError

TcapError

The TcapError received in response to the ReadyForSM

Statistics

IPSMGWReadyForSM statistics are tracked by the sentinel.ipsmgw SBB and can be found under the following parameter set in REM:
SLEE-Usage → sentinel.ipsmgw service → sentinel.ipsmgw SBB → feature → IPSMGWReadyForSM
or with rhino-stats:
"SLEE-Usage.Services.ServiceID[name=sentinel.ipsmgw,vendor=OpenCloud,version=4.0.0].SbbID[name=sentinel.ipsmgw,vendor=OpenCloud,version=4.0.0].feature.IPSMGWReadyForSM"

Name Description 
SentReadyForSM

Incremented when the ReadyForSM message is successfully sent to the HLR

 
FailedToSendReadyForSM

Incremented when the ReadyForSM message fails to be sent to the HLR

 
NoIMSIAvailable

Incremented when the IMSI was not available from session state

 
SRI4SMFailed

Incremented when the SendRoutingInfoForSMRequest failed and the feature cannot do anything as a result

 
SuppressedReadyForSM

Incremented when the ReadyForSM message is suppressed

Configuration

The feature is configured with configuration scoped according to a Sentinel Selection Key. The Profile Table used to hold feature configuration is IPSMGWSharedConfigProfileTable.

The following attributes are available

Attributes Type Meaning 
HlrAddress

String

Address of the HLR to send the ReadyForSM request, used when establishing the MAP dialog if UseMsisdnAsHlrAddress is not configured

 
UseMsisdnAsHlrAddress

boolean

Controls whether to address the outbound HLR leg using a GT address formed from the subscriber MSISDN, instead of using the configured HlrAddress

 
SentinelOriginatingAddress

String

Address of Sentinel used when establishing the MAP dialog

 
InvokeTimeout

int

The timeout in milliseconds for the response from HLR. Used in the TCAP layer for the invoke timeout. Default is 5000

 
SuppressHLRInteraction

boolean

If true, no MAP messages will be sent to the HLR. Can only be set to true when DeliveryOrder is PS_ONLY. For more information, refer to Suppression of HLR Interaction

Using MSISDN as HLR Address

The Ready For SM feature can optionally address the HLR leg using a GT address formed from the inbound subscriber MSISDN, as opposed to using the destination addresses configured in the IPSMGWMapProxyConfigProfileTable profile table described above.

This behaviour can be enabled or disabled by setting the UseMsisdnAsHlrAddress attribute in the Shared Configuration Profile.

MAP Application Context

The feature uses MAP Application Context mwdMngtContext_v2_ac. This application context was added in GSM MAP Phase 2.

Behaviour

When triggered on a TCAP message the feature checks that an IMSI is present in session state field named IMSI. It then initiates a ReadyForSM operation to the HLR with an alert reason of:

  • Memory Available if session Plan Id is SMMA

  • MS Present if session Plan Id is Sh_PNR or register

When the ReadyForSM operation completes, the feature sets the ReadyForSMResult session state field based on the response, SUCCESS if the ReadyForSM operation is successful, FAILED if the ReadyForSM operation returns an error or a timeout. It also sets the ReadyForSMError session state field with the TcapError if the response was a failure.

It can be inhibited if the IPSMGW is configured to suppress HLR Interaction (see Suppression of HLR Interaction)

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Sentinel IP-SM-GW Version 4.0.0