MSISDN

All you want to know about 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.

Contents

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

ITU
OMA

 Mobile Subscriber ISDN Number Vocabulary for 3GPP Specifications (new)[2]

ITU-T Rec. Q.1741-4 (10/2005)[3]
Dictionary for OMA Specifications [4]
3GPP

ITU
GSMA

 Mobile Station International ISDN Number(s) GSM 03.03 (old)[5]

ITU-T Rec. Q.1741-4 (10/2005)[3]
Mobile Terms & Acronyms[6]
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).

MSISDN - Mobile Station International Subscriber Directory Number

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: 46701123456

CC 46 Sweden
NDC 701 TeliaSonera
SN 123456 John Doe

For further information on the MSISDN format, see the ITU-T specification E.164.

See also

External links

References

  1. ^ The conclusion ("most common") is drawn from the recent documentation from 3GPP and OMA, please see the Abbreviation section above
  2. ^ 3GPP Vocabulary
  3. ^ a b ITU-T Q.1741-4
  4. ^ OMA Dictionary
  5. ^ GSM 03.03
  6. ^ GSMA Acronyms
  7. ^ ITU Vocabulary
Retrieved from "http://en.wikipedia.org/wiki/MSISDN"

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