Multi-Tech Systems CDMA Wireless Modem Answer a Call a, Remote Disconnection, Command syntax ATA

Chapter 5 – Call Control Commands

Answer a Call A

Description: When the product receives a call, it sets the RingInd signal and sends the ASCII “RING” or “+CRING: <type>” string to the application (+CRING if the cellular result code +CRC is enabled). Then it waits for the application to accept the call with the ATA command.

Syntax:	Command syntax: ATA
	Command	Possible Responses
		RING
		Note: Incoming call
	ATA	+WANS:0
	Note: Answer to this incoming call	+WCNT: 10
		Note: Call accepted
	ATH	OK
	Note: Disconnect call	+WEND: 10
		Note: Call disconnected

Remote Disconnection

Description: A message is used by the product to inform the application that the remote user has released an active call. The product sends +WEND: <result code> to the application. The DCD signal may be set based upon the AT&C2 setting for packet calls. See chapter 3,Unsolicited Results for more information on the +WEND command.

Extended Error Report +CEER

Description: This command gives the cause of any general call processing error or malfunction. See Chapter 20, Extended Error Report.

Syntax:	Command syntax: AT+CEER
	Command	Possible Responses
	ATD18005551212;	OK
		+WORG:18005551212
		+WCNT:3
	ATD1234567;	ERROR
	Note: Outgoing voice call while already in a call	Note: Call setup failure
	AT+CEER	+CEER: Error 2
		OK
		Note: Operation not allowed when call in progress
	AT+CEER	+CEER : Error <x>
		OK
	Note: Ask for reason of release	Note: <x>is the cause information element values

Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C 36