VLR_ID field 412 may specify the current VLR servicing the mobile terminal associated with HLR record 400. In the present example, VLR_ID field 412 indicates the mobile terminal is being serviced by a VLR having an ID of VLR₁. In a similar manner, SGSN_ID field 414 may specify the current SGSN servicing the mobile terminal associated with HLR record 400. In the present example, SGSN_ID field 414 indicates the mobile terminal is being serviced by an SGSN having an ID of SGSN₁.

An Short Message Service-Customized Applications for Mobile networks Enhanced Logic (CAMEL) Subscription Information (SMS-CSI) field 416 may contain trigger information required to invoke CAMEL Service Logic for Mobile Originating Short Message Submissions. In the illustrative example, the trigger information maintained in SMS-CSI field 416 is diagrammatically represented as “trigger_info”. A short message service center (SMSC) Number field 418 may include an identifier, e.g., an SS7 point code, assigned to an SMSC that is to service the associated subscriber. In the illustrative example, SMSC_Number field 418 has a value of Point Code_c assigned to SMSC 144 depicted in FIGS. 1 and 2. An MSC_ID field 420 may include an identifier, e.g., a point code, of the MSC currently, or most recently, servicing the mobile terminal associated with HLR record 400. In the present example, the point code of the MSC specified by MSC_ID field is represented as “Point Code_x”.