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The ATX4 command causes the command modem to wait for a dial tone before
dialing. This command is referred to as the smart dialing method where as the ATX3 command is referred
to as blind dialing. The CONNECT xxxx result codes are activated and the BUSY
result code is enabled if a busy signal is detected from the called command modem. The ATX4
command is the factory default setting.
The Result Code Set/Call Progress X commands are summa- rized below.
ATX0 Basic result codes are enabled. Dumb dialing (dial tone and busy
signal) capability is provided.
ATX1 Extended result codes are enabled. Dumb dialing capability is
provided.
ATX2 Wait for dial tone before dialing is enabled. Extended result codes
are enabled. Busy signal is not detected.
ATX3 Blind dialing is enabled along with extended result codes. Busy
result code is enabled if the busy signal is detected.
ATX4 Smart dialing is enabled with extended result codes. Smart dialing
provides dial tone and busy signal detec tion. ATX4 is the factory default setting.
Select Stored The Select Stored Profile on Power Up &Y command determines Profile on Powerwhich stored
profile is established on power up or reset of the Up command modem. The &Y0 command selects stored
profile 0 and &Y1 selects stored profile 1 on power up or reset. The profile &Y0-1is stored
using the &W command. &Y0 is the factory default setting.
Recall The Z command causes the command modem to retreive the
Stored stored configuration from non-volatile memory (NVRAM) and Profilesstore it in the active
configuration area. The command mode
buffer is cleared after the Z command is executed. The ATZ0
Z0-1 command loads profile 0 into the active configuration area and
ATZ1 command loads profile 1. The active profiles are stored using the &W
command and viewed using the &V command which are explained earlier in this section.
Store Telephone The Store Telephone Number &Z command causes the com- Number mand modem to store
up to four strings of telephone numbers into NVRAM for later recall by the Dial Stored Number ATDSx &Z0-3=x
command. The format for this command is &Z and up to a 36 character telephone number and/or dialing
modifiers which are stored at location 0. If the command format is &Z= (=is a delimiter)
with no number preceding the delimiter, this telephone number is also stored at location 0. If the format
of this command is &Zx= where the number preceding the delimiter is between 0 and 3, the
telephone number and/or dialing modifiers are stored at the loaction specified by the number preceding the
delimiter. The following characters are allowed to be stored: 0 through 9, A through D,
T P R W # * , ! ; along with the delimiter (=).
Dial Digits/ Digits 0 through 9 and characters A through D, # and * are valid Characters dial
characters. Characters A through D, # and * represent specific tone pairs and therefore, can be used
only when tone 0 to 9, A to D, dialing.
# and *
Wait for Quiet The Wait for Quiet Answer @ command causes the command Answer modem to look for
rings followed by 5 seconds of silence before processing the next symbol in the dial command. This command
@ is used for accessing a system that does not provide a dial tone. S-Register S7
determines the maximum wait time. If Quiet Answer is detected, the dial modifiers following the command are
executed. If busy is detected, the command modem returns a BUSY result code and
goes to the hang-up process, aborting further execution of commands.
Flash On Hook The Flash On Hook ! command causes the command modem to to go on hook for
0.75 second. Some switch-board systems react to a momentary on hook state. An exclamation point
inserted in the dialing command causes the command to flash on hook for three-quarters of a second, just as if
you had depressed the disconnect button (on the handset cradle)
momentarily.
Automatic You can cause the command modem to pause during the
Pauses in dialing sequence by entering a comma character where the
Dialing pause is desired. This pause will last two seconds. If a longer