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Content for  TS 23.003  Word version:  17.5.0

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8  SCCP subsystem numbersWord‑p. 43

Subsystem numbers are used to identify applications within network entities which use SCCP signalling. In GSM and UMTS, subsystem numbers may be used between PLMNs, in which case they are taken from the globally standardized range (1 - 31) or the part of the national network range (129 - 150) reserved for GSM/UMTS use between PLMNs. For use within a PLMN, they are taken from the part of the national network range (32 - 128 & 151 - 254) not reserved for GSM/UMTS use between PLMNs.
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8.1  Globally standardized subsystem numbers used for GSM/UMTSWord‑p. 43

The following globally standardised subsystem numbers have been allocated for use by GSM/UMTS:
0000 0110
HLR (MAP);
0000 0111
VLR (MAP);
0000 1000
MSC (MAP);
0000 1001
EIR (MAP);
0000 1010
is allocated for evolution (possible Authentication Centre).

8.2  National network subsystem numbers used for GSM/UMTSWord‑p. 43

The following national network subsystem numbers have been allocated for use within GSM/UMTS networks:
1111 1000
CSS (MAP);
1111 1001
PCAP;
1111 1010
BSC (BSSAP-LE);
1111 1011
MSC (BSSAP-LE);
1111 1100
SMLC (BSSAP-LE);
1111 1101
BSS O&M (A interface);
1111 1110
BSSAP (A interface).
The following national network subsystem numbers have been allocated for use within and between GSM/UMTS networks:
1000 1110
RANAP;
1000 1111
RNSAP;
1001 0001
GMLC (MAP);
1001 0010
CAP;
1001 0011
gsmSCF (MAP) or IM-SSF (MAP) or Presence Network Agent;
1001 0100
SIWF (MAP);
1001 0101
SGSN (MAP);
1001 0110
GGSN (MAP).

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