System information

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).