CallOriginator

Validations ASN.1 Parent Types

The call originator applies only in respect of mobile terminated traffic.  It identifies the person making the call.

Also, some networks may inhibit the transfer of this information where CLI presentation is prohibited.

Derivation:

GSM item CallingNumber (GSM 12.05).  This item is of type AddressString and is further expanded into items Type Of Number, Numbering Plan and the number itself (GSM 09.02).

Conditionality:

Must be present within group MT Basic Call Information where the network supports calling line identity (CLI) or if TeleService Code indicates SMS usage (values 20 or 21) and Charged Item is not equal to ‘N’.

Validations

Error Code	Context	Severity Level	Validation Description
30     31     32     33     34     35	MTC     MTC     MTC     MTC     MTC     MTC	Warning     Warning     Warning     Warning     Warning     Severe	Item Type Of Number present and Calling Number not present within group.   Item Numbering Plan present and Calling Number not present within group.   Item Modification Indicator present and Calling Number not present within group.   Item Type Of Number not present and Calling Number present within group.   Item Numbering Plan not present and Calling Number present within group.   Item Calling Number missing when TeleService Code indicates SMS usage (values 20 or 21) and Charged Item is not equal to ‘N’

 

CallOriginator ::= [APPLICATION 41]  SEQUENCE
{
    typeOfNumber                TypeOfNumber          OPTIONAL,
    numberingPlan               NumberingPlan         OPTIONAL,
    callingNumber               AddressStringDigits   OPTIONAL,
    modificationIndicator       ModificationIndicator OPTIONAL,
    clirIndicator               ClirIndicator         OPTIONAL
}

Parent Types

MtBasicCallInformation
Text extracted from GSMA TD57 standard