(SCCP) subsystem numbers are used to identify
applications
Application may refer to:
Mathematics and computing
* Application software, computer software designed to help the user to perform specific tasks
** Application layer, an abstraction layer that specifies protocols and interface methods used in a c ...
within
network
Network, networking and networked may refer to:
Science and technology
* Network theory, the study of graphs as a representation of relations between discrete objects
* Network science, an academic field that studies complex networks
Mathematics
...
entities which use SCCP signalling.
GSM and UMTS SSNs
In
Global System for Mobile Communications
The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation ( 2G) digital cellular networks used by mobile devices such as ...
(GSM) and
Universal Mobile Telecommunications System
The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the Inte ...
(UMTS), subsystem numbers may be used between
Public land mobile network
In telecommunication, a public land mobile network (PLMN) is a combination of wireless communication services offered by a specific operator in a specific country.3GPP TS 21.905 https://www.etsi.org/deliver/etsi_tr/121900_121999/121905/15.00.00_6 ...
s (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, numbers are taken from the part of the national network range (32 - 128 & 151 - 254) not reserved for GSM/UMTS use between PLMNs.
The following globally standardized subsystem numbers have been allocated for use by GSM/UMTS:
0 Not used/Unknown
1 SCCP MG
6
HLR (
MAP
A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes.
Many maps are static, fixed to paper or some other durable medium, while others are dynamic or interactive. Although ...
)
7
VLR (MAP)
8
MSC (MAP)
9
EIR
In Norse mythology, Eir (Old Norse: , "protection, help, mercy"Orchard (1997:36).) is a goddess or valkyrie associated with medical skill. Eir is attested in the ''Poetic Edda'', compiled in the 13th century from earlier traditional sources; th ...
(MAP)
10 is allocated for evolution (possible Authentication Centre).
The following national network subsystem numbers have been allocated for use within GSM/UMTS networks:
249 PCAP
250
BSC
A Bachelor of Science (BS, BSc, SB, or ScB; from the Latin ') is a bachelor's degree awarded for programs that generally last three to five years.
The first university to admit a student to the degree of Bachelor of Science was the University ...
(BSSAP-LE)
251
MSC (BSSAP-LE)
252
SMLC Serving Mobile Location Center
In GSM Networks, the SMLC is a network element that resides in the BSC (Base Station Controller) and calculates network-based location of mobile stations (handsets). The SMLC may control several LMUs (Location Measurem ...
(BSSAP-LE)
253
BSS O&M (A interface)
254 BSSAP (A interface)
The following national network subsystem numbers have been allocated for use within and between GSM/UMTS networks:
142
RANAP
In telecommunications networks, RANAP (Radio Access Network Application Part) is a protocol specified by 3GPP in TS 25.413
and used in UMTS for signaling between the Core Network, which can be a MSC or SGSN, and the UTRAN. RANAP is carried over ...
143 RNSAP
145
GMLC
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The Gateway Mobile Location Centre (GMLC) contains functionality required to support location-based service (LBS). In one public land mobile network (PLMN), there may be more than one GMLC. The GMLC is the first node a ...
(MAP)
146 CAP
147 gsmSCF (MAP) or IM-SSF (MAP)
148 SIWF (MAP)
149
SGSN
The GPRS core network is the central part of the general packet radio service (GPRS) which allows 2G, 3G and WCDMA mobile networks to transmit IP packets to external networks such as the Internet. The GPRS system is an integrated part of the G ...
(MAP)
150
GGSN
The GPRS core network is the central part of the general packet radio service (GPRS) which allows 2G, 3G and WCDMA mobile networks to transmit IP packets to external networks such as the Internet. The GPRS system is an integrated part of the G ...
(MAP)
241
INAP
INAP stands for Intelligent Network Application Protocol or Intelligent Network Application Part. It is the signalling protocol used in Intelligent Networking (IN). It is part of the Signalling System No. 7 (SS7) protocol suite, typically layere ...
North American (ANSI) SSNs
232 CNAM (Calling Name)
247
LNP
248 800 number translation (
AIN0.1)
254 800 number translation (
TCAP)
References
CAP SCCP SSN reallocation(PDF)
(HTML)
Signaling System 7