ZyXEL Communications U-336R/RE manual Extended AT* Command Set

Command	Options	Function & Description	Ref.
	&Y2	Nondestructive, unexpedited.
&Z?		Display all the phone numbers stored
		in non-volatile RAM.
&Zn=s	n=0-49	Write phone number/s to NVRAM at
		location n (n=0-49) use AT*Dn or
		ATS29=n to set the default dial
		pointer.

Extended AT* Command Set

Command	Options		Function & Description	Ref.
*Bn			Dial-backup selection.	S30
	*B0	*	Disable dial-backup.
	*Bn		Enable dial-backup and set dial-
			backup pointer at telephone
			directory location (n-1). See also
			S34, S44b2)
*Cn			Character length, including start,	S15.3-4
			stop and parity bit.
	*C0	*	10-bit character length.
	*C1		11-bit character length.
	*C2		9-bit character length.
	*C3		8-bit character length.
*Dn	n=0-49		Set default dial pointer at telephone	S29
			directory location n.
	*D0	*	(See also S35.4 and S38.0)
*En			Modem error control negotiation.	S21.0
	*E0	*	if error control negotiation fails,
			keep the non-error control
			connection.
	*E1		If error control negotiation fails,
			disconnect the call (hang-up).

AT Command Set Summaries 89