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26 221 02-FGB 101 544 Uen H - June 2009

4.6.2 Operator Lock

This feature allows for the use of SIM cards in the Ericsson W3x that meet

specific criteria. This would normally be configured to allow only a specific

operator or group of operators SIM cards.

The Ericsson W3x can be locked to only accept SIM cards based on one or

more of the following:

• Mobile Country Code (MCC)

• Mobile Network Code (MNC)

MCCs are defined in ITU E.212 (“Land Mobile Numbering Plan”) for use in

identifying mobile stations in wireless telephone networks. A MCC is often

used in combination with a Mobile Network Code (MNC) in order to

uniquely identify a network operator.

Both the MCC and MNC are part of the International Mobile Subscriber

Identity (IMSI) number, which uniquely identifies a particular subscriber,

and is stored on the SIM card.

From the WUI it is possible to enter a secret “Unlock Operator Lock” code

(which is a random code generated at production).

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Ericsson W3x Series Información técnica Pagina 26