Sierra Wireless MC8775 Reference Manual page 61

Table 4-2: Diagnostic command details (Continued)
Command
!UMTSCHAN?
!UMTSCHAN
=<flag>[,<DL_UARFCN>]
Supporting Mini Cards:
•
All
Note: This command is not
password-protected.
Rev 2.9 Oct.08
Query / set Priority UMTS Channel Selection state
The modem can be set to scan a 'priority' UMTS channel when the
modem powers up, before scanning other frequencies. This allows you to
use the modem on a test cell network (that uses the priority UMTS
channel) in an area where a UMTS network already exists—the modem
attempts to access the test network even if a cell on the normal UMTS
network would provide a better connection.
Note: If the signal is lost on the priority UMTS channel, the modem scans
for another channel. To force the modem to rescan for the priority UMTS
channel, you must power cycle the modem.
Usage:
•
AT!UMTSCHAN? returns the current <flag> setting and DL_UARFCN
(if <flag> = 1).
•
AT!UMTSCHAN=<flag>[,<DL_UARFC>] enables / disables the feature
and power cycles the modem, forcing cell reselection.
•
AT!UMTSCHAN=0 disables the feature and power cycles the
modem, forcing cell reselection using normal scanning procedure.
•
AT!UMTSCHAN=1,<DL_UARFCN> enables the feature and power
cycles the modem, forcing cell reselection. The modem scans
DL_UARFC first, then, if the priority channel is unavailable, uses
normal scanning procedure.
Parameters:
<flag>
•
0 = Disable priority UMTS channel selection. When the modem power
cycles, cell reselection occurs using normal scanning procedure.
•
1 = Enable priority UMTS channel selection. When the modem power
cycles, cell reselection occurs—the modem scans DL_UARFC first,
then uses normal scanning procedure if it is unavailable.
<DL_UARFCN> (Valid downlink UARFCN based on the operating band)
•
Only used when <flag> = 1 (enable)
•
Examples: 10700, 9800
Diagnostic Commands
Description
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