Siemens TC37 Module At Command Reference page 76

AT Command Set
<mode> 0 unlock
<passwd> password
<class>
TC3X_ATC_01_V04.00
Factory set SIM locks
"PF" lock Phone to the very First SIM card
"PN" Network Personalisation
"PU" Network subset Personalisation
"PP" Service Provider Personalisation
"PC" Corporate Personalisation
Typical examples of factory set SIM locks are prepaid phones or
Note:
network locks, used to restrict the operation of a mobile to a
specific provider or operator. The client should be aware that
each of these lock types can only be unlocked if the associated
password is available. For example, a mobile can be locked to
accept only SIM cards from the respective provider, or even one
single SIM card. Once a different SIM card is inserted the ME will
prompt the client to enter a specific code. This is not the PUK of
the SIM card, but usually an 8-digit code which needs to be
requested from the provider.
The locks can only be set by the manufacturer and need to be
agreed upon between the parties concerned, e.g. provider,
operator, distributor etc. on the one side and the manufacturer
on the other side. For details contact your local dealer or
Siemens AG.
See Chapter 4.31 and 4.31.1 for further instructions.
Supplementary Service: Call barring:
"AO" BAOC (Bar All Outgoing Calls)
"OI" BOIC (Bar Outgoing International Calls)
"OX" BOIC-exHC (Bar Outgoing International Calls except to Home
Country)
"AI" BAIC (Bar All Incoming Calls)
"IR" BIC-Roam (Bar Incoming Calls when Roaming outside the home
country)
"AB" All Barring services (applicable only for <mode>=0)
"AG" All outGoing barring services (applicable only for <mode>=0)
"AC" All inComing barring services (applicable only for <mode>=0)
The availability of the Supplementary Services varies with the
Note:
network. To benefit from call barring the client will need to
subscribe them, though a limited number of call barring types
may be included in the basic tariff package. Call barring is
protected by a password supplied from the provider or operator.
Usually there is one password which applies to all call barring
options. For details contact your provider.
1 lock
2 query status
See Chapters 4.34 and 6.36 for instructions of how to specify
passwords.
integer or sum of integers each representing a <class> of information:
1 voice
2 data
4 fax
8 short message service
16 data circuit sync
Page 76 of 204 29.05.2002