Page 18 - Appendix A: SPOT Commands
SPOT 3 User's Guide
Hayes AT Commands
SPOT supports a range of HAYES AT modem commands.
These can be used by PC applications to control the SPOT
modem. Each command must be prefixed with
AT
and
then followed by carriage return (
↵
↵
).
SPOT AT Commands
A
Answer
O
Return to online
&F
Restore factory defaults
B
BELL or CCITT
P
Pulse dial
&G
Guard Tone
B0
CCITT operation
Q
Quiet control
&G0 Disable guard tone
B1
BELL operation
Q0
Messages enabled
&G2 Enable 1800Hz guard tone
D
Dial
Q1
Messages disabled
DP
Pulse dial
Sn? Display S register n
&M
Asynch/Synchronous Mode
DT
Tone dial
Sn=x Sets S-register n to value x
&M0 Asynchronous mode
T
Tone dial
&R
RTS/CTS Handshake
D!
Initiate hook flash
V
Verbose/numeric results
&R0 CTS follows RTS
D,
Pause (time set in register S2) V0
Numeric result codes
&R1 CTS always active
DV
Telephone mode after dialling
V1
Verbose result codes
&S
Data Signal Ready Options
D;
Telephone mode after dialling
X
Extended results selection
&S0 DSR always active
X0
Blind dialling
&S1 DSR active at connection
E
Echo select
X1
As X0 plus connect speed
&T
Test Commands
E0
Disabled
X3
As X1 plus busy enabled
&T0 Terminate test
E1
Enabled
Z
Reset modem
&T1 Local analog loopback
H
On/off hook
&C
Data Carrier Detect
&T8 As &T8 plus enter self test
H0
On-hook
&C0 DCD always active
&V
View configurations
H1
Off-hook
&C1 DCD active on carrier detect
I
Identify
&D
Data Terminal Ready Control
I0
Request product id.
&D0 Ignore DTR
I1
Requests ROM checksum
&D1 Command mode on DTR drop
I2
Verify ROM checksum
&D2 DTR disconnects SPOT
I3
Request firmware version
&D3 Software reset on DTR drop
I4
Request model version
Some AT commands may invoke a result code from SPOT,
these are listed overleaf along with the values stored in
SPOT's S-Registers.
Dialling Using AT Commands:
SPOT can use Hayes AT commands to dial either as a
modem (for a modem to modem call) or telephone (for a
speech call). To dial as a modem, use
ATDT
number
. To dial
as a telephone, use
ATDTV
number
or
ATDT
number
;
. When
dialling as a telephone,
ATH0
has to be issued twice to hand
up.
Summary of Contents for SPOT 3
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