MC55 AT Command Set
5.1 AT+CPIN s
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MC55_ATC_V01.05 Page 106 of 469 2/10/04
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is an 8-digit device code associated to the IMEI number of the mobile which can only by obtaine d from the man-
ufacturer or provider. When needed, contact Siemens AG and request the Master P hone Code of the specific
module.
There are two ways to enter the Master Phone code:
• You can enter AT+CPIN=Master Phone Code,new password.
• You can use the ATD command followed by the GSM code *#0003*Master Phone Code#;.
Usually, the Master Phone Code will be supplied by mail or e-mail. If the received number i s enclosed in the *#
codes typically used for the ATD option, it is important to crop the preceding *#0003* characters and the
appended #.
Example: You may be given the string *#0003*12345678#. When prompted for the PH-SIM PUK simply enter
12345678.
If incorrectly input, the Master Phone Code is governed by a specific timing algorithm : (n-1)*256 seconds (see
table below). The timing should be considered by system integrators when des igning an individual MMI.
SIM locks:
These are factory set locks, such as "PF", "PN", "PU", "PP", "PC". An 8-digit unlocking code is required to operate
the mobile with a different SIM card, or to lift the lock. The code can only be obtained from the provider.
Failure to enter the password is subject to the same timing algor ithm as the Master Phone Code (see Table
above).
Call barring:
Supported modes are "AO", "OI", "OX", "AI", "IR", "AB", "AG", "AC". If the call barri ng password is entered incor-
rectly three times, the client will need to contact the service provider to obtain a new one.
Summary of related chapters:
Related +CME errors are listed in 2.11.1. For further instructions and examples see AT+CLCK, AT^SLCK,
AT+CPWD and AT^SPWD. A complete list of *# codes is provided in List of *# Codes.
Number of failed attempts Time to wait before next input is allowed
1st failed attempt No time to wait
2nd failed attempt 4 seconds
3rd failed attempt 3 * 256 seconds
4th failed attempt 4 * 256 seconds
5th failed attempt 5 * 256 seconds
6th failed attempt and so forth 6 * 256 seconds and so forth