98-08901C68-O 153
AT Commands Reference
The following table shows the +IPR parameters.
Example
AT+IPR=?
+IPR: (0-10,300,600,1200,2400,4800,9600,19200,38400, 57600,115200)
OK
AT+IPR=6
OK
AT+IPR?
+IPR: 19200
4.7.1.9 &C, Circuit 109 Behavior
This parameter determines how the state of the DCD line relates to the detection of the received line signal from the distant end.
Changing the parameters will take effect immediately in both the command and online command states.
The DCD line is an output line that indicates the following:
• In Circuit Switch Data mode an active (low) indicates that a valid carrier (data signal) was detected by the g20 (CONNECT
message is received), and inactive (high) indicates idle. The AT&C command always puts the DCD command ON, when set
to 0. If the AT&C command is set to 1 then the "+++" escape command sets the DCD signal to an inactive state and the ATO
command is set to active. The AT&C set to 2 sets the DCD signal OFF.
• In GPRS mode, the DCD line indicates the PDP context status. PDP context active sets the DCD to active (low); PDP context
inactive sets the DCD to inactive (high). The DCD is activated only when the PDP context is achieved. The DCD is
de-activated when the PDP context is off.
When AT&C is set to 0, the DCD signal is always ON. When AT&C is set to 1, the DCD is activated in online mode. When
AT&C is set to 2, the DCD is activated only when the PDP context is achieved (temporary IP address is received).
Table 68. +IPR Parameters
<Parameter> Description
<n> <rate> 0 300
1 600
2 1200
3 2400
4 4800
5 9600
6 19200
7 38400
8 57600
9 Auto baud rate
10 115200
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