User's Manual

Telit TRIZIUM Product Description
80264ST10007a Rev. 4– 09/09/04
Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 189 of 202
5.10 Easy Scan Extension
5.10.1 Easy Scan custom AT commands
5.10.1.1 *CSURV - Network Survey of the complete 900/1800/1900 Network
*CSURV – network survey of the complete GSM900/1800/1900 Network
Execute command
AT*CSURV
AT#CSURV
(both syntax are possible)
The command allows to perform a quick survey through both GSM900 and
DCS1800 or PCS1900 Bands (full band scan). After this the following information
for every received BCCH is available.
For BCCH-Carrier:
arfcn: <value> bsic: <value> rxLev: <value> ber: <value> mcc: <value> mnc:
<value> lac: <value> cellId: <value> cellStatus: <value> numArfcn: <value> arfcn:
<value1>…<value64> numChannels: <value> array: <value1>…<value32>
For non BCCH-Carrier:
arfcn: <value> level: <value>
where:
arfcn = C0 carrier assigned radio channel (BCCH - Broadcast Control Channel)
bsic = base station identification code
rxLev = received level (in dBm)
ber = bit error rate (in %)
mcc = mobile country code
mnc = mobile network code
lac = localization area code
cellId = cell identifier
cellStatus = cell Status
Cell Allocation
NumArfcn = number of valid channels
arfcn = arfcn-list
BCCH Allocation
NumChannels = number of valid channels
array = arfcn-list
The parameter CELLSTATUS indicates the following statuses:
- CELL_SUITABLE indicates the C0 is a suitable cell.
- CELL_LOW_PRIORITY indicates the cell is low priority based on
the system information received.
- CELL_FORBIDDEN indicates the cell is forbidden.
- CELL_BARRED indicates the cell is barred based on the system
information received.
- CELL_LOW_LEVEL indicates the cell RXLEV is low.
- CELL_OTHER indicates none of the above e.g. exclusion timer
running, no BCCH available…etc.
For every non BCCH the following information is available:
arfcn = RF channel
rxLev = received level (in dBm)
Read command
Write command
AT*CSURV=<s>,<e>
The command allows to perform a quick survey through a defined part of the
GSM900/DCS1800/PCS1900 Bands. It scans the channel from <s> to <e>. The
result format is similar to the full band scan.
Parameters: <s> = starting channel
<e> = ending channel