Motorola G24 用户手册

Chapter 3: AT Commands Reference

December 31, 2007

AT Commands Reference Manual

3-19

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 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

ata

OK //VOICE call connected - G24 is in Command mode

ath

NO CARRIER

Example - Answering a data call:

+CRING: REL ASYNC

ata

...

//Connecting (dots are not displayed)

OK //DATA call connected - G24 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 to the terminal when the G24 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.