Table 12. At Command Sets Requiring An "At" Prefix - ZyXEL Communications OMNI 56K User Manual

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
Command Options
M1 *
M2
M3
O
O1
Qn
Q0 *
Q1
Q2
Sr.b=n
Sr.b?
Sr=n
Sr?
T
UPX
Vn
V0
V1 *
Xn n=0-7
5 *
Zn n=0-2
Zn
Z2
+++

Table 12. AT Command Sets Requiring an "AT" Prefix

Function & Description
Speaker is ON until carrier detected.
Speaker is always ON.
Speaker is ON after the last digit is dialed out
Tone dialing is not heard.
Return to on-line state.
Force modem to request a retrain.
Result code displayed.
Modem returns result code.
Modem does not return result code.
Modem returns result code but quiet after
answering on a RING. (see also S42.2)
Set bit 'b' of S-register 'r' to value 'n'. 'n' is a
binary digit '0' or '1'
Display value of bit 'b' of S-register 'r'
Set S-register 'r' to value 'n'. 'n' must be a
decimal number between 0 and 255.
Display value stored in S-register 'r'
Tone dial
Download firmware to the Flash EPROM by
using Xmodem protocol.
Sets display type for Result Codes.
Display result code in numeric form. (See
also S35.7 and the result code table of
'ATXn')
Display result code in verbose form.
Result code options, see the Options Table.
Reset modem and set power-on profile.
Reset modem and load user profile n (0-1).
Reset modem and load factory settings.
Escape sequence code , entered in data
state , wait for modem to return to command
state.
Ref.
S23.7
S40.1
S23.1
S23.6
S23.3-5
S15.5-7
5-3