MSISDN
MSISDN is a number uniquely identifying a subscription in a GSM or UMTS mobile network. Simply put, it is the telephone number to the SIM card in a mobile/cellular phone. The abbreviation has several interpretations, most common one being "Mobile Station International Subscriber Directory Number"[1]..
The MSISDN together with IMSI are two important numbers used to identify a mobile phone. IMSI is often used as a key in the HLR ("subscriber database") and MSISDN is the number normally dialed to connect a call to the mobile phone.
The MSISDN follows the numbering plan defined in the ITU-T recommendation E.164.
Abbreviation
Depending on source or standardization body, the abbreviation MSISDN can be written out in several different ways. These are today the most widespread and common in use.
| Organization | Meaning | Source |
|---|---|---|
| 3GPP |
Mobile Subscriber ISDN Number | Vocabulary for 3GPP Specifications (new)[2] ITU-T Rec. Q.1741-4 (10/2005)[3] |
| 3GPP |
Mobile Station International ISDN Number(s) | GSM 03.03 (old)[5] |
| ITU | Mobile Subscriber International ISDN Number | Vocabulary of Switching and Signalling Terms [7] |
MSISDN Format
MSISDN is maximized to 15 digits, prefixes not included (e.g. 00 prefixes an international MSISDN when dialling from Sweden).
In GSM and its variant DCS 1800, MSISDN is built up as
MSISDN = CC + NDC + SN
CC = Country Code
NDC = National Destination Code, identifies one or part of a PLMN
SN = Subscriber Number
In the GSM variant PCS 1900, MSISDN is built up as
MSISDN = CC + NPA + SN
CC = Country Code
NPA = Number Planning Area
SN = Subscriber Number
Example
MSISDN: 467011234567890
| CC | 46 | Sweden |
|---|---|---|
| NDC | 701 | TeliaSonera |
| SN | 1234567890 | John Doe |
For further information on the MSISDN format, see the ITU-T specification E.164.
See also
External links
- http://www.3gpp.org, GSM 03.03 (see section 3.3)
- http://www.openmobilealliance.org
- http://www.itu.int, E.164, E.212, E.213, E.214
- http://www.gsmworld.com
References
- ^ The conclusion ("most common") is drawn from the recent documentation from 3GPP and OMA, please see the Abbreviation section above
- ^ 3GPP Vocabulary
- ^ a b ITU-T Q.1741-4
- ^ OMA Dictionary
- ^ GSM 03.03
- ^ GSMA Acronyms
- ^ ITU Vocabulary