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11. NETWORK
163
LZT 123 7361 R1B
11.16 AT*ECPI Ciphering Indicator
This command allows the external application to activate/deactivate the
ciphering indication. The ciphering indication allows the external
application to detect when the mobile connection becomes deciphered
and thus unsecured.
Test command gives the current value of the <switch> parameter,
informing if the indicator is enabled or disabled.
The ciphering indicator feature may be disabled by the home network
operator setting data in the “administrative data” field (EFAD) in the
SIM as defined in GSM 11.11.
If this feature is not disabled by the SIM, then whenever a connection is
in place, which is or becomes deciphered, an indication is given via the
unsolicited result code *ECPV:<ciphering>.
<stat> Description
0 Not registered, ME is not currently searching for a new operator to
register with
1 Registered, home network
2 Not registered, but ME is currently searching for a new operator to
register with
3 Registration denied
4 Unknown
5 Registered, roaming
Description Command Possible Responses
Request activation of the
ciphering indication
AT *E C PI =< s wi t ch > •OK
• +CME: <error>
• ERROR
Shows the current setting AT* EC P I? •*ECPI: <switch>
•OK
• ERROR
Show if the command is
supported
AT*ECPI=? • *ECPI: (list of supported
<switch>es values)
•OK
• ERROR
<switch> Description
1 Ciphering indication is on. The unsolicited result code *ECPV is sent
anytime the communication is unsecured and when it becomes secure
again
0 Ciphering indication is off. Disable the ciphering indication, *ECPV
is not sent