Multi-Tech Systems CDMA Wireless Modem Dial Command D, Direct Dial Syntax, Command syntax ATDnb

Chapter 5 – Call Control Commands

CHAPTER 5 - CALL CONTROL COMMANDS

Dial Command D

Description: The ATD command is used to originate a voice, data or fax call. The dial command also controls supplementary services.

For a data or a fax call, the application sends the following ASCII string to the product:

ATD<nb> where <nb> is the destination phone number.

Note: ATD<nb> is followed by PPP negotiation.

For a voice call, the application sends the following ASCII string to the product: ATD<nb>; where <nb> is the dialing string or destination phone number, followed a semicolon “;”. The dialing string may only contain characters “0-9”,”#”,”*” only. Note that some countries may have specific numbering rules for their CDMA handset numbering.

The response to the ATD command is one of the following:

Verbose Result Code	Numeric Code (with	Description
	ATV0 set)
OK	0	Command executed (voice)
CONNECT <speed>	10,11,12,13,14,15	If the call succeeds, for data calls only, <speed> takes
		the value negotiated by the product.
BUSY	7	If the called party is already in communication,
NO ANSWER	8	If no hang up is detected after a fixed network time-out
NO CARRIER	3	Call setup failed or remote user release.
NO DIALTONE	6	Voice call with missing “;”

Direct Dial
Syntax:	Command syntax: ATD<nb>[;]
	Command	Possible Responses
	ATD18005551212;	OK
	Note: Attempt a voice	Note: Command executed
	call.	+WORG:18005551212
		Note: Voice call origination sent to Base Station with dial string “18005551212”.
		+WCNT: 9
		Note: Call Connected, CDMA traffic channel established with service option 9.
		You can now hear audio of the calling party’s phone ringing. However, this event
		does not means the other calling party has answered.
	ATD5551212;	OK
	Note: Example of a	Note: Command executed
	failed voice call	+WORG:5551212
	attempt.	Note: Voice call origination sent to Base Station with dialing string “5551212”.
		+WEND: 3
		Note: Call Attempt failed/ended. Reason 3, signal faded.

Dialing from a phonebook entry (stored in the RUIM card or NV) can be performed with the following commands:

ATD><index>; Call <index> from the +CPBS selected phonebook. ATD>”Bill”; Call “Bill” from the +CPBS selected phonebook.

ATD><mem><index>; <mem> is a +CPBS=? listed phonebook and <index> is a valid l location within the phonebook

Note: A semicolon must be used at the end of the AT command to signal phonebook dialing. Otherwise, the command will result in an error.

Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C 34