InterrogateSS

Usage

This message is used between a MSC and a VLR and between the VLR and the HLR to retrieve information related to a Supplementary Service.

Addressing

...

Invoke parameters

• ss-Code – the code of the supplementary service to be interrogated.

• basicService – indicates for which basic service group the supplementary service should be interrogated. If not included, the interrogation request applies to all basic services. It's a choice between:
  • bearerService – affected bearer
  • teleservice – affected service

• longFTN-Supported - indicates that the mobile station supports Long Forwarded-to Numbers.

Result parameters

The set of parameters in the result depends on the invoke parameters, can be one of:

• ss-Status – the state information of the supplementary service that was interrogated. It is a comma separated set of the following flags:
  • provisioned - service is supported by the HLR
  • registered - service is registered for the subscriber, applies only to Call Forwarding
  • active - service is active for the subscriber; for Call Forwarding the number must also be present
  • quiescent - the service is active but is currently disabled because a higher priority service takes precedence. For example the baoc (Block All Outgoing Calls) service makes boic (Block Outgoing International Calls) become quiescent.

• basicServiceGroupList – list of
  • basicService – identifies a bearer or a teleservice
  • forwardingFeatureList – list of forwarding features:

• forwardingFeature – represents the information about each combination of a basic service and call forwarding service. It is a list of the following parameters:
  • • basicService – bearer or teleservice.
    • ss-Status - the state information of the supplementary service that was interrogated, see ss-Status above.
    • forwardedToNumber – the address to which a call is to be forwarded.
    • forwardedToSubaddress – refers to the sub-address attached to the address to which is to be forwarded.
    • forwardingOptions - refers to a forwarding option attached to a supplementary service.
    • noReplyConditionTime – refers to the timer for call forwarding on no reply.
    • extensionContainer
    • longForwardedToNumber – an address to which the call is to be forwarded.

• genericServiceInfo – it is a list of the following parameters:
  • ss-Status - the state information of the supplementary service that was interrogated, see ss-Status above.
  • cliRestrictionOption – refers to the Restriction mode attached to the supplementary service. It can have one of the following values:
    • permanent
    • temporaryDefaultRestricted
    • temporaryDefaultAllowed
  • maximumentitledPriority – indicates the highest priority a subscriber is allowed to apply to an outgoing call setup.
  • defaultPriority – defines the priority level that should be assigned if no explicit priority is indicated during call setup.
  • ccbs-FeatureList – sequence of
    • CCBS-Feature – the necessary set of information requiered to describe a CCBS request. I can contain the following parameters:
      • ccbs-Index
      • b-subscriberNumber - number of destination B dialled by user A.
      • b-subscriberSubaddress - the sub-address attached to destination B.
      • basicServiceGroup – bearer or teleservice.
    • nbrSB - indicates the maximum number of parallel bearers that may be used as defined by the user's subscription.
    • nbrUser - is sent to register the MC maximum number of user defined circuit switched bearers to be used.
    • nbrSN - ...

Example

<component localCID="1" type="Invoke" operationCode="interrogateSS">
     <ss-Code>allCallOfferingSS</ss-Code>
     <basicService>
            <teleservice>automaticFacsimileGroup3</teleservice>
     </basicService>
</component>

References

• ETSI TS 100 974 V7.15.0 (2004-03) p1079