Method for routing messages in a telecommunications network

DETAILED DESCRIPTION A.
Definitions ABC—Administration and Billing Center AuC—Authentication Center ADC—Administration system BSS—Base Station Subsystem Calling number—The telephone number of the call originator.
Called number—The called telephone number.
CAP—CAMEL Application Part CCBS—Call Completion to Busy Subscriber CSC—Customer Service Center DPC—Destination Point Code DTAG—Deutsche Telekom AG EIR—Equipment Identity Register ETSI—European Telecommunications Standards Institute GSMC—Gateway Mobile Services Switching Center GPRS—General Packet Radio Service GSM—Global System for Mobile Communications HLR—Home Location Register HPLMN—Home Public Land Mobile Network IDP—Initial Detection Point IMEI—International Mobile Equipment Identity IMSI—International Mobile Subscriber Identity IN—Intelligent Network INAP—Intelligent Network Application Part ISDN—Integrated Services Digital Network LNP—Local Number Portability LUP—Location Update Procedure MAP—Mobile Application Part MAPv1—MAP version 1 MAPv2—MAP version 2 MD—Mediation Device MNP—Mobile Number Portability MOC—Mobile Originated Call MSC—Mobile Services Switching Center MSISDN—Mobile Station ISDN Number MTC—Mobile Terminating Calls MTP—Message Transfer Part NAR—Network Address Register NMC—Network Management Center OMC—Operation and Maintenance Center OPC—Originating Point Code PSTN—Public Switched Telephone Network SCCP—Signaling Connection Control Part SCP—Service Control Point SDF—Service Data Function SIM—Subscriber Identity Module SIM card—a SIM card is used for billing, security and number storage.
The SIM card parameters are defined by ISO GSM SIM Card standards.
SMS—Short Message Service SMSC—Short Message Service Center SSP—Service Switching Point SPC—Signaling Point Code SRI—Send Routing information STP—Signaling Transfer Point TC—Transaction Capabilities UMTS—Universal Mobile Telecommunications System VASS—Value Added Services System VLR—Visitor Location Register VMSC—Voice Mail Service Center B