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

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