PIONEERPOS 88 &C Parameters, April 15 G24-L AT Commands Reference Manual 137, At&C?, OK AT&C0

Chapter 3: AT Commands Reference

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).

Command Type	Syntax	Response/Action
Set	AT&C<param>	OK
Read	AT&C?	&C:<param>
Test	AT&C=?	&C:(list of supported <param>s)

The following table shows the &C parameters.

			Table 3-88: &C Parameters
<Parameter>			Description
<param>	DCD signal ON
	0	DCD is forced ON at all times.
	1	DCD is set to ON when:
		a	A CSD carrier is detected.
		b A GPRS external session is being
			established:
	G24-L enters PPP mode
	TE is about to send an LCP configure-request to the G24-L (GPRS connection is not
	yet established).
		DCD is set to OFF when:
		a No CSD carrier is detected. This can
			happen when a CSD call has been disconnected
			or when G24-L enters CSD online command mode
			(switch operation).
		b The G24-L has lost its GPRS connection with the
			network (PDP context was deactivated and the IP
			address is cancelled).
	2	DCD is set to ON when G24-L establishes a GPRS connection with the
	network (PDP context is activated and the IP address is received from the network).
		DCD is set to OFF when G24-L has lost its GPRS connection with the network
	(PDP context was deactivated and the IP address is cancelled).
	The default value is 1.

Note: If &C is set to 2 when a CSD call is set, DCD will always remain OFF.

Example

AT&C? &C: 1

OK AT&C0

OK

April 15, 2008 G24-L AT Commands Reference Manual 3-137