For example, the command ATD“AEG”5678 is equivalent to ATD2345678
S
Autodial Stored Number
This command instructs the T-311 to dial the stored number. The command format is: ATDS <CR>
(To program the stored number, see AT&Z.)
E
Command Echo
This command determines whether characters you type are echoed to the computer screen. If what
you type appears double on the screen, disable the echo; if you cannot see what you type, enable
echo, as follows:
E0
Echo off
This command disables local command echo.
E1
Echo on
This command enables local command echo. (Default)
H
On-/Off-Hook Command
This command controls the “hook” status of the telephone line connected to the T-311; that is, it is
equivalent to picking up and replacing a telephone handset.
H or H0
On-hook
This command places the line on-hook (hangs up). This command cancels either an H1 or an H2.
(Default)
H1
Off-hook
This command takes the line off-hook.
H2
Off-hook/remote off
This command takes the line off-hook and closes the remote control relay.
H3
Hold
This command puts the line on hold
Note:
When Bit 7 of Register S*2 is set to 1, the T-311 will ignore an H0 and hang up when it
receives an H3. This configuration is used when the T-311 is controlled by drivers written for a
Zoom
®
modem.
I
Internal Memory Test
This command performs the following internal memory tests:
I or I0
Product code rev.no.
This command displays product code and revision number
I1
Checksum
This command displays a firmware checksum
I2
RAM
This command tests internal RAM (soft resets the T-311).
T-311
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