Description

Feature name

FlashSms

Applicable contexts

  • SS7 service

  • Diameter service

  • SIP service

Prerequisite features

A feature to set the NotificationMessage and NotificationAddress session state variables

The notification information will be accessed from the NotificationMessage session state variable which was set by a prior feature. The supported data coding schemes are GSM_7BIT and UCS2 — the message will be sent using the GSM_7BIT coding scheme if it can be represented in the 7-bit alphabet; otherwise, the UCS2 coding scheme will be used.

The notification message will be sent to (in order of precedence):

  • Address in NotificationAddress session state variable (if set)

  • Address in Subscriber session state variable.

If neither of these variables are set then the message will not be sent.

The feature checks the IMSI and MSCAddress session state fields. When both are set the feature will not perform an SendRoutingInformationForSM but use the MSCAddress session state field instead.

Note MTForwardSM will return success if the handset is available and message delivered. If it’s not, then a error response will be returned that the message was not deliverable (absent subscriber, and so on). As the call is either in progress or has just ended, the message will be deliverable in the vast majority of cases so no special behaviour is required in the error cases after sending MTForwardSM. Sentinel will not attempt to retry sending the message if there is an error delivering the message for any reason.

Session state inputs and outputs

Inputs

Name Type Format Description Behaviour if null/invalid

SentinelSelectionKey

com.opencloud.sentinel.common.SentinelSelectionKey

selection key (for example, <platform>::::)

For selecting configuration data

Increment SmsDeliveryFailures, return

IMSI

String

IMSI

The subscriber’s IMSI address, which may require an SRI lookup if null

Perform an SRI lookup

MSCAddress byte[]

SCCP address

The subscriber’s current MSC address, which may require an SRI lookup if null

Perform an SRI lookup

NotificationMessage

String

Arbitrary text

The textual content of the flash SMS

Increment SmsDeliveryFailures, return

NotificationAddress

String

MSISDN

The flash SMS destination address

Fall back to session state Subscriber address

Subscriber

Outputs

Name Type Format Description

IMSI

String

IMSI

Determined through SRI lookup if previously null

MSCAddress

byte[]

SCCP address

Determined from SRI lookup if previously null

Error scenarios

This table applies if an SRI is required:

Scenario Handling

Null sessionstate selection key

Increment SmsDeliveryFailures

Missing entry in FlashSmsFeatureConfigProfileTable

Increment SmsDeliveryFailures

No notification address or subscriber address

Increment SmsDeliveryFailures

Null TemplateHlrSccpAddress in FlashSMS config

Increment SmsDeliveryFailures

Exception sending SRI

Increment SmsDeliveryFailures

OpenRefuse from HLR

Increment HlrSS7ProviderErrors or HlrSS7UserErrors
Increment SmsDeliveryFailures
Close dialog
Increment HlrSS7Errors

Abort from HLR

Increment HlrProviderAborts or HlrUserAborts
Increment SmsDeliveryFailures
Increment HlrAbortsReceived

Timeout waiting for HLR response

Increment HlrTimeouts
Increment HlrSS7ProviderErrors or HlrSS7UserErrors
Increment SmsDeliveryFailures
Close dialog

Exception closing dialog in any HLR dialog failure scenario

Increment SmsDeliveryFailures
Increment HlrSS7Errors

This table applies if the SRI succeeds or is not required:

Scenario Handling

No notification address or subscriber address in sessionstate

Increment SmsDeliveryFailures

Null sessionstate MSCAddress

Increment SmsDeliveryFailures

Null sessionstate IMSI

Increment SmsDeliveryFailures

Null sessionstate NotificationMessage

Increment SmsDeliveryFailures

Exception sending mtForwardSM request

Increment SmsDeliveryFailures

MessageEncodingFailure sending mtForwardSM request

Increment SmsDeliveryFailures
Increment EncodingFailure

OpenRefuse from MSC

Increment MscSS7ProviderErrors
or MscSS7UserErrors
Increment SmsDeliveryFailures
Close dialog
Increment MscSS7Errors

Abort from MSC

Increment MscProviderAborts or MscUserAborts
Increment SmsDeliveryFailures
Increment MscAbortsReceived

Timeout waiting for MSC response

Increment MscTimeouts
Increment MscSS7ProviderErrors or MscSS7UserErrors
Increment SmsDeliveryFailures
Close dialog

Feature responses

Response Reason

featureHasFinished

feature has finished

Configuration

The Flash SMS Notification configuration includes:

Parameter Type Description

SccpOriginatingAddress

SCCP address

Will be used as the TCAP Calling Party Address in dialogs initiated towards the HLR and MSC. May be null in which case the local SCCP address configured for the platform will be used. Example: type=c7,ri=gt,digits=34607012345,nature=national,national=true

InvokeTimeout

Long

SRIforSM and MTForwardSM invoke timeouts in milliseconds (for example, 5000). A 0 value results in CGIN RA defaults being used.

TemplateHlrSccpAddress

SCCP address

A template address that will be used to address the HLR. Global title digits in the template address will be replaced with the relevant notification address. The encoding scheme will also be updated, if relevant for the GT indicator type, to indicate BCD_ODD or BCD_EVEN, depending on the number of address digits.

TemplateMscSccpAddress

SCCP address

A template address that will be used to address the MSC. Global title digits in the template address will be replaced with the MSC address from session state. The encoding scheme will also be updated, if relevant for the GT indicator type, to indicate BCD_ODD or BCD_EVEN, depending on the number of address digits.

SMSAddressOriginatingAddress

SMSAddress

Local SCCP address (for example, address=64600000002,nature=INTERNATIONAL,numberingPlan=ISDN)

AddressStringServiceCentreAddress

AddressString

Service centre address (for example, address=643434,nature=INTERNATIONAL,numberingPlan=ISDN)

ShortMsgMTApplicationContext

TcapApplicationContext

The MAP application context to be used for the dialog towards the MSC. Must be one of:

  • shortMsgMT-RelayContext-v1-ac

  • shortMsgMT-RelayContext-v2-ac

  • shortMsgMT-RelayContext-v3-ac

  • shortMsgMT-Relay-VGCS-Context-v3-ac

Call flow

There are two MAP requests as party of the MTForwardSM process:

  1. Obtaining the routing information from the HLR.

  2. Sending the MT SMS.

The first step is performed by sending an SendRoutingInformationForSM request to the HLR to determine the routing information for the MT Forward SM. This step is not performed if the IMSI and MSCAddress session state fields are set.

The HLR SCCP Address will be based on the MSISDN of the subscriber. (See MAP SPEC Section 4 Requirements concerning the use of SCCP and TC/4.1.3.3 The Home Location Register (HLR) — refer to MAP SPEC footnote). The MSISDN will be retrieved from SessionState.NotificationAddress or SessionState.Subscriber.

hlrSccpAddress.address={SessionState.NotificationAddress or SessionState.Subscriber)
hlrSccpAddress.nature=International
hlrSccpAddress.numberingPlan=ISDN
hlrSccpAddress.routingIndicator=(GT for extra/inter-PLMN, GT or SPC for intra-PLMN) default 0 (GT)
hlrSccpAddress.GTI=0100 (Global title indicator = 0100 (Global title includes translation type, numbering plan, encoding scheme and nature of address indicator)
hlrSccpAddress.type=C7
hlrSccpAddress.ssnIndicator=1 (MAP SSN always included)
hrlSccpAddress.ssn=(configured per network) default 6
hrlSccpAddress.pc=(configured per network) default not set
hlrSccpAddress.tt=0 (not used)
imsi = RoutingInfoForSM-Res.imsi
msc-number = RoutingInfoForSM-Res.locationInfoWithLMSI.networkNode-Number
IF RoutingInfoForSM-Res.locationInfoWithLMSI.gprsNodeIndicator not present OR
   (RoutingInfoForSM-Res.locationInfoWithLMSI.gprsNodeIndicator present AND
    RoutingInfoForSM-Res.LocationInfoWithLMSI.additional-Number is sgsn-Number) THEN
    mscAddress = RoutingInfoForSM-Res.LocationInfoWithLMSI.networkNode-Number
else
    mscAddress = RoutingInfoForSM-Res.LocationInfoWithLMSI.additional-Number
Note RoutingInfoForSM-Res.locationInfoWithLMSI.networkNode-Number renamed from msc-Number between R96 and R97. The networkNode-number can also contain an sgsn-number or IP-SM-GW number or SMS Router number.

The second step is to send the MTForwardSM:

Field Value

destination SCCP address

msc-number from the SRIforSM or MSCAddress session state field

sm-RP-DA.imsi

use the imsi from the SRIforSM or the IMSI session state field

sm-RP-OA.serviceCentreAddress

Sentinel address for response messages

sm-RP-UI

SMSDeliver as below

moreMessagesToSend

not set

extensionContainer

not set

smDeliveryTimer

not set

smDeliveryStartTime

not set

SMSDeliver:

Field Value

onlyHeader

not set

replyPath

false

userDataHeaderIndicator

true

statusReportIndication

false

moreMessagesToSend

NONE

loopPrevention

false

originatingAddress

configurable address — probably some service number

protocolId

0 (TelematicDevice.IMPLICIT)

dataCodingScheme

{MessageClass=SPARE_0, MessageCoding determined by encoded text, supports GSM_7BIT or UCS2}

serviceCentreTimeStamp

current time

userDataLength

length of encoded text based on data coding scheme

userData

encoded text

The SMS PDU of the message sent will be taken from the notification session state variables.

Configuration profile naming

Configuration Profile Table Name Description Profile Naming

FlashSmsFeatureConfigProfileTable

Selection of database implementation and rating group for the feature.

SentinelSelectionKey (for example, OpenCloud::::)

Provisioning interfaces

The feature is provisioned using the Sentinel Features REST API or web interface.

MAP SPEC

Digital cellular telecommunications system (Phase 2+); Mobile Application Part (MAP) specification (3GPP TS 09.02 version 5.17.0 Release 1996)

ETSI/3GPP

2002-03

ETSI
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