Sentinel has a set of configurable prefix and suffix lists, scoped by Sentinel selection key, which are used for number analysis.

Description

Feature name

PrefixAndSuffixAnalysis

Applicable contexts

  • SS7 service

SAS Support

No * Diameter Mediation Service

Prerequisite features

If a prefix or suffix is matched, the directive associated with the prefix is used.

The directives are: strip prefix/suffix or retain prefix/suffix, and set session parameter with configured value.

Where the directive is strip, the new called party number will be sent in a connect.

Note Subsequent features may make additional changes to the called party number, so the final address sent in the connect will be dependent on those features.
Parameter Description

Address

Prefix or suffix to match

Description

ListId

${SELECTIONKEY}:PrefixAndSuffixAnalysis::SpecialPrefixList
${SELECTIONKEY}:PrefixAndSuffixAnalysis:SpecialSuffixList

ParameterName

Session state field to set (for example, AnnouncementID). Field name is in Java identifier format, and follows the rules of Java identifiers (such as not being a Java keyword).

ParameterType

boolean, integer, long, string

ParameterValue

Value to write to session state. Must be formatted correctly for the value specified in the Parameter Type field

PrefixDirective

strip, retain

Example of prefix analysis configuration:

Prefix/suffix address Directive Session Parameter Parameter Type Parameter Value Description

1234

STRIP

CLI

String

SUPPRESS

555

STRIP

TARIFF

String

Cheap-International-Calling

*591

STRIP

PROFILE

Integer

1

Profile selection

*592

STRIP

PROFILE

Integer

2

Profile selection

*593

STRIP

PROFILE

Integer

3

Profile selection

*594

STRIP

PROFILE

Integer

4

Profile selection

.

STRIP

Strip ST (end of pulsing) digit

Prefix may contain the following characters: 0-9, *, #, a, b, c, and . (period) . The expected decoding of a network address is specific to the number.

CalledPartyBCDNumber (MO calls):

Decoded character

0

1

2

3

4

5

6

7

8

9

*

#

a

b

c

Encoded hexadecimal

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

CalledPartyNumber (MF/MT calls):

Decoded character

0

1

2

3

4

5

6

7

8

9

*

#

.

Encoded hexadecimal

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

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

Report featureCannotStart, featureHasFinished

InitialDPArg

com.opencloud.slee.resources.cgin.cap_v1.

CAP1InitialDPArg

CAP-DataTypes.InitialDPArg InitialDP which triggered this session

Report featureCannotStart, featureHasFinished

CallType

com.opencloud.sentinel.common.CallType

One of: MobileOriginating, MobileTerminating, MobileForwarded, NetworkInitiated, EmergencyCall

Session type of this call for determining which party address to analyse

Report featureCannotStart, featureHasFinished

Outputs

Name Type Format Description

DestinationHasChanged

boolean

true or false

True if the IDP CdPA number address has been modified

ServiceType

com.opencloud.sentinel.common.ServiceType

One of: Voice, Data, Fax, Video, Unknown

Indicates the service type of this session

InitialDPArg

com.opencloud.slee.resources.cgin.cap_v1.CAP1InitialDPArg

CAP-DataTypes.InitialDPArg

Updated InitialDPArg if destination has changed

Other session state fields see Description see Description This feature can update other session state fields according to configuration data when a prefix or suffix match is found

Error scenarios

Scenario Handling

Sessionstate SentinelSelectionKey is null

Report featureCannotStart

Sessionstate InitialDPArg is null

Report featureCannotStart

Sessionstate InitialDPArg is not CAP

Report featureCannotStart

Attempt to set non-existent SessionState parameter

Report featureFailedToExecute

Feature responses

Response Reason

featureCannotStart

SessionState SentinelSelectionKey is not set, InitialDP Arg is not set in session state or InitialDP Arg is not an instance of CAP1InitialDPArg

featureFailedToExecute

Attempt to set non-existent SessionState parameter

featureHasFinished

feature has finished

Multiple subscriber profile selection

The Prefix and Suffix Analysis feature supports multiple subscriber profile selection. See Noldus​[1] pp.219 5.2.9 Multiple Subscriber Profile.

MSP uses suffixes with the following digit string for the called party number, for dynamic profile selection: <Directory Number>59n # SEND , where n identifies the profile.

Configuration

Prefix and Suffix Analysis uses Sentinel AddressLists for configuration data. See Address Lists for how to provide the configuration data.

Configuration profile naming

Configuration Profile Table Name

Description

Profile Naming

${PLATFORMOPERATOR}_PrefixAndSuffixAnalysisFeature_AddressListConfigurationTable

Address list configuration

${SELECTIONKEY}:PrefixAndSuffixAnalysis:SpecialPrefiList or ${SELECTIONKEY}:PrefixAndSuffixAnalysis:SpecialSuffixList

${PLATFORMOPERATOR}_PrefixAndSuffixAnalysisFeature_AddressListEntryTable

Feature specific Address List entry table

${SELECTIONKEY}:PrefixAndSuffixAnalysis:SpecialPrefixList:${ADDRESS}

Provisioning interfaces

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

NOLDUS

CAMEL

INTELLIGENT NETWORKS FOR THE GSM, GPRS AND UMTS NETWORK

Rogier Noldus

2006

John Wiley & Sons, Ltd


1. Noldus, Rogier (2006), "CAMEL: Intelligent Networks for the GSM, GPRS and UMTS Network", John Wiley & Sons, Ltd
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Sentinel Express Version 4.0.0