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From Wikipedia, the free encyclopedia

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 Subscriber Integrated Services Digital Network 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 1 Abbreviation 2 MSISDN Format 2.1 Example 3 See also 4 External links 5 References

[edit] 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]

[edit] MSISDN Format

An MSISDN is limited 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

[edit] Example

MSISDN: 79261234567

CC	7	Russia
NDC	926	MegaFon
SN	1234567	Vasiliy Pupkin

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

[edit] See also

• E.164
• IMSI
• SIM card
• Mobile phone
• IMEI
• GSM
• HLR
• E.214

[edit] 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

[edit] 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