AC75 AT Command Set
8.9 AT^MONI s
AC75_ATC_V01.002 Page 211 of 569 10/30/06
Confidential / Released
If the radio cell changes during a connection, the parameters PWR, RXLev and C1 of the 'Serving Cell' part
cannot be updated under certain conditions and therefore, are displayed as "-" (for conditions see also
AT+CREG). This is because the MS does not update the cell selection and reselection parameters since, in
this mode, they are not relevant for operation. When the connection ends, and the mobile is back to IDLE
mode, correct values will be given.
If the radio cell changes during a connection, it normally takes 1 or 2 seconds to update the parameters cell,
NCC and BCC. Until the information is received from the new base station, the default values will be shown
instead: cell="0000", NCC="-", BCC="-".
If the BS supports frequency hopping during a connection, the dedicated channel (parameter chann) is not
stable. This mode is indicated by chann = 'h'.
To some extent, the cell monitoring command AT^SMONC covers the same parameters. The receiving level,
for example, can be queried with both commands. Yet the resulting values may be slightly different, even
though obtained over a time period of a few seconds. This is quite normal and nothing to worry about, as the
cell information is permanently updated.
For compatibility with earlier products and to support legacy applications, any input character may be used to
stop the output in certain cases (depending on the settings of AT+IPR and AT+CMUX).
8.9.1 AT^MONI responses
ME is not connected:
a) ME is camping on a cell and registered to the network:
b) ME is camping on a cell but not registered to the network (only emergency call allowed):
c) ME camping on a cell, but searching for a better cell (cell reselection):
d) ME is searching and could not (yet) find a suitable cell:
ME is connected (Call in progress):
Columns for Serving Cell:
Serving Cell I Dedicated channel
chann rs dBm MCC MNC LAC cell NCC BCC PWR RXLev C1 I chann TS timAdv PWR dBm Q ChMod
1013 21 -71 001 01 1001 0103 7 7 33 -105 33 I No connection
Serving Cell I Dedicated channel
chann rs dBm MCC MNC LAC cell NCC BCC PWR RXLev C1 I chann TS timAdv PWR dBm Q ChMod
1013 21 -71 001 01 1001 0103 7 7 33 -105 33 I Limited Service
Serving Cell I Dedicated channel
chann rs dBm MCC MNC LAC cell NCC BCC PWR RXLev C1 I chann TS timAdv PWR dBm Q ChMod
1013 21 -71 001 01 1001 0103 7 7 33 -105 33 I Cell Reselection
Serving Cell I Dedicated channel
chann rs dBm MCC MNC LAC cell NCC BCC PWR RXLev C1 I chann TS timAdv PWR dBm Q ChMod
Searching
Serving Cell I Dedicated channel
chann rs dBm MCC MNC LAC cell NCC BCC PWR RXLev C1 I chann TS timAdv PWR dBm Q ChMod
1013 19 -76 001 01 1001 0103 7 7 33 -105 33 I 1015 1 0 5 -76 0 S_HR
Column Description
chann ARFCN (Absolute Frequency Channel Number) of the BCCH carrier
rs RSSI value 0 - 63 (RSSI = Received signal strength indication)
dBm Receiving level of the BCCH carrier in dBm
MCC Mobile Country Code (first part of the PLMN code)