CalAmp 819-GPRS series User Manual page 46

Gsm gprs serial cellular data modem
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Set number of seconds to wait for connection completion:
ATS7
=000 to 060
Set number of seconds to wait for comma dialing modifier:
ATS8
=0
=1 to 255 Number of seconds to pause
Set disconnect delay after indicating the absence of data carrier:
ATS10
=001 to 254 Number of tenths of seconds of delay
Switch from command mode to data mode / PPP online mode:
ATO is the corresponding command to the +++ escape sequence: When you
ATO
have established a CSD call or a GPRS connection and TA is in command mode,
ATO causes the TA to resume the data or GPRS connection and takes you back
to data mode or PPP online mode.
Switch from data mode to command mode:
This command is only available during a CSD call or a GPRS connection. The
+++ character sequence causes the TA to cancel the data flow over the AT
interface and switch to command mode. This allows you to enter AT commands
+++
while maintaining the data connection to the remote device or, accordingly, the
GPRS connection. To prevent the +++ escape sequence from being
misinterpreted as data, it must be preceded and followed by a pause of at least
1000 ms. The +++ characters must be entered in quick succession, all within
1000 ms.
Select bearer service type:
AT+CBST=<speed>
speed:
=1 300 bps (V.21)
=2 1200 bps (V.22)
=4 2400 bps (V.22bis)
=6 4800 bps (V.32)
AT+CBST
=7 9600 bps (V.32)
=14 14400 bps (V.34)
=65 300 bps (V.110)
=66 1200 bps (V.110)
=68 2400 bps (V.110)
=70 4800 bps (V.110)
=71 9600 bps (V.110)
=75 14400 bps (V.110)
AT+CRLP
Select radio link protocol parameters for originated non-transparent data calls.
List current calls of ME:
AT+CLCC
The execute command returns a list of current calls of ME. If command is
successful, but no calls are available, no information response is sent to TE.
Service reporting control:
Configures the TA whether or not to transmit an intermediate result code +CR:
<serv> to TE when a call is being set up.
AT+CR
=0 Disable
=1 Enable
Setting the value to 1 may lead to connection failure, if the application (e.g.
WinFax) waits for default result code/URC.
Set Cellular Result Codes for incoming call indication:
The command controls whether or not to use the extended format of incoming
call indication.
At+CRC
=0 Disable extended format
=1 Enable extended format
Setting the value to 1 may lead to connection failure, if the application (e.g.
WinFax) waits for default result code/URC.
DCE does not pause when "," encountered in dial string
001-0003-829 Revision 1
Page 46 of 65

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