ZyXEL Communications Comet 336P user manual Extended AT* Command Set

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Command	Options	Function & Description
&Yn		Break handling. Destructive Break clears the buffer. Expedited Break is
		sent immediately to the remote system.
	&Y0	Destructive, expedited.
	&Y1 *	Nondestructive, expedited.
	&Y2	Nondestructive, unexpedited.
&Z?		Display all the phone numbers stored in non-volatile RAM.
&Zn=s	n=0-3	Write phone number/s to NVRAM at location n (n=0-3) use AT*Dn to set
		the default dial pointer.

Extended AT* Command Set

Command	Options		Function & Description
*Dn	n=0-3		Set default dial pointer at telephone directory location n.
*En			Modem error control negotiation.
	*E0	*	if error control negotiation fails, keep the non-error control connection.
	*E1		If error control negotiation fails, disconnect the call (hang-up).
*Qn			Action taken when line quality changes.
	*Q0		No action to poor signal quality.
	*Q1		Retrain action taken if signal quality is poor.
	*Q2	*	Adaptive rate, automatic fall-back or forward.
	*Q3		Disconnect if signal quality is poor.

20 AT Command Set Summaries

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Contents

Comet 336P User’s Manual FCC Part 15 Information Limited WarrantyAcknowledgments FCC Requirements Contacting ZyXEL∙ E-mail Table of Contents AT Command Set Summaries Hardware Overview IntroductionUnpacking Your Modem Required EquipmentIntroduction Hardware InstallationUsing INF file in the bundled diskette WindowsDOS Fax/Modem Enabler Technical Notes for EnablerWindows NT IRQ Number AddressClick the Finish button Installation Installation Basic Modem Operation Understanding AT CommandsUsing the Windows 95 Hyper Terminal Program Dialing using the ATD Command Dialing and Answering TechniquesATS0=n Making Your First ConnectionAuto-Answer and Hook Controls ATS0=0AT Command Set/Type Example Quick Tips when issuing AT CommandsCommand Description Changing S Register Values Modem Result CodesViewing S Register Values Storing Phone Numbers Saving Settings and User ProfilesNon-Volatile Memory Dialing Stored Phone NumbersDefault Modem Settings for PC’s AT Command DescriptionBasic Modem Operation AT Command Set Summaries Basic AT Command SetExtended AT& Command Set MNP4+MNP59600/7200T/4800 Extended AT* Command Set Registers ATSn=x Status Registers & Result CodesRegister Definitions Page ATXn Result Code Option Table Result Code Chart Symbol Reference Result Code Field Descriptions