PIONEERPOS G24-LC manual Answer Incoming Call, AT+CRC=1 +CRING Voice, +CRING REL Async

Chapter 3: AT Commands Reference

A, Answer Incoming Call

This command answers an incoming VOICE/DATA/FAX call after a RING/+CRING indication is sent to the terminal.

If the incoming call is answered (connected), the G24-L sends a CONNECT notification to the terminal.

If the MT call fails, the possible notifications are:

•NO CARRIER - Connection Failure

•ERROR - General Failure

Note: A waiting call (an incoming call while a call is in progress) is announced by +CCWA rather than RING. A waiting call can be answered only if it is a voice call. The waiting voice call should be answered using the ATA command, which will put the active call on hold and will connect the waiting call, making it the active call. This ATA action is the same action as AT+CHLD=2.

Example

Example - Answering a voice call:
AT+CRC=1
+CRING: VOICE
+CRING: VOICE
ata
OK	//VOICE call connected - G24-L is in Command mode
ath
NO CARRIER
OK
Example - Answering a data call:
+CRING: REL ASYNC
+CRING: REL ASYNC
ata
...	//Connecting (dots are not displayed)
OK	//DATA call connected - G24-L is in Online Data mode

Note: In a CSD call, call release is not valid during the phase of call negotiation (from OK until connect call).

+CRC, Cellular Result Codes and RING, +CRING - Incoming Call Indication

This command controls whether or not to present the extended format of an incoming call indication. The RING/+CRING indication is sent from the G24-L to the terminal when the G24-L is alerted by an incoming call from the network. Once this indication is sent, information is available on the calling line via +CLIP. When +CRC is disabled, the indication is RING, and when +CRC is enabled, the indication is +CRING.

April 15, 2008 G24-L AT Commands Reference Manual 3-17