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114
Basic "AT" Command Set
Command Options Function & Description
Ref.
A/
Re-execute the last command
once
A>
Re-execute the last command
once or repeat the last call up to 9
times. (See also S8)
<any key>
Terminate current connection
attempt when enter in
handshaking state.
+++
Escape sequence code, entered in
data state, wait for TA to return to
command state.
All the Following Commands Require a “AT” Prefix
A
Go on-line in answer mode. (See
also S39.2, S43.6)
ATA
Return to command state.
ATABn
B1
Set B1 for leased line in answer
mode.
B2
Set B2 for leased line in answer
mode.
B3
Set B1 & B2 for leased line in
answer mode.
Bnn
Select ISDN Teleservice
'B' must be followed by two digits.
S82
S102
B0n
X.75
B00
X.75 Transparent
B01
X.75 T.70
B04
BTX (Data X-J)
B10
V.110 user rate follows DTE speed
(async.) or V.110 user rate
determined by in-band negotiation
(sync.)