03.563GPPCTS Architecture DescriptionGSM Cordless Telephony System (CTS), Phase 1Stage 2TS
7.1 Identification of the CTS-FP
A CTS specific identity is assigned to a CTS FP subscriber of a CTS service.
Each CTS-FP is assigned by the manufacturer a unique IFPEI number see GSM 03.03 .
The coding rules of the IFPEI and the rules for changing the IFPEI shall be equal to the rules defined for the IMEI in GSM 03.03 .
The CTS-FP broadcasts (after CTS-FP initialisation has been performed) a beacon which carries information conveying the Fixed Part Beacon Identity which identifies the CTS-FP. The FPBI need not be unique due to the capacity of signalling on the beacon. The FPBI is defined in GSM 03.03 . The use of the beacon and the FPBI related procedures are defined in .
7.2 Addressing parameters
7.2.1 Addressing the CTS-FP
188.8.131.52 CTS-FP Fixed Network dialling number
This is the fixed network dialling number (PSTN/ISDN) to which the CTS-FP is connected. A single CTS-FP may have several fixed network dialling numbers.
184.108.40.206 CTS FP name
It shall be possible to assign a subscriber-defined identifier to each CTS FP. The CTS FP name can e.g. be an icon or an alphanumeric text up to 10 characters.
7.2.2 Addressing the CTS-MS subscriber
The MSISDN is the dialling number at which the CTS-MS can be reached in the cellular network. It may also be used for CTS applications.
In order to address a CTS-MS by its MSISDN, this number has to be known by the CTS-FP and the CTS-MS. The MSISDN may be submitted to the CTS-FP either:
- from the CTS-HLR at CTS-MS enrolment; or
- by means of user input; or
- by the CTS-MS
220.127.116.11 CTS-MS Subscriber Identity(CTS-MSI)
The CTS-MSI is an CTS-MS identity which has only local significance between a CTS-MS and CTS-FP pair, its purpose is to maintain the anonymity of the users of the CTS service as specified in .
The CTS-MSI is assigned and maintained by the CTS-FP during CTS-MS enrolment, and is reallocated by the CTS-FP during CTS attachment and as part of each Mobile originated and Mobile terminated signalling exchange. It is unique for each CTS-MS enrolled at the CTS-FP. The CTS-MSI allocation procedure and CTS-MSI reallocation procedure data flows are specified in .
In order to maintain anonymity of the subscriber the CTS-MSI shall be used in all signalling procedures by both CTS-MS and CTS-FP.
The protocols shall ensure that the CTS-FP can detect any CTS-MSI conflicts (e.g. duplicated CTS-MSI). In case of CTS-MSI conflicts, it is up to the CTS-FP to resolve the situation by the appropriate security checks (i.e. by obtaining the IMSI of the CTS-MS, performing local security procedures (see ) and verifying the enrolment rights).