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Extended AT Commands Manual Page 58 of 70 2009-06-25
Register Value Description
Packet
Data
STU-
III
S7
1 to 255
[50]
Number of seconds to establish end-to-end data
connection.
O N/A
S8
0 to 255
2
Number of seconds to pause when “,” is
encountered in dial string.
N/A N/A
[S9]
0 to 255
6
Carrier detect threshold in increments of 0.1
seconds.
N/A N/A
S10
1 to 254
[14]
[255]
Number of tenths of a second from carrier loss to
disconnect.
[255: Disable carrier detect.]
N/A N/A
[S11]
50-255
95
DTMF tone duration and spacing in milliseconds.
: Only AT command ori
g
inated DTMF tones are supported.
N/A N/A
12.2.3. Basic action command set
The following table specifies the Basic action command set to be supported for the data services.
Exceptions to EIA/TIA-602 are indicated by square brackets. Default settings are shown in bold.
Table 12.80 Basic action commands
Command Description
A/ Re-execute previous command.
A Enter the online state. See service specific processing for further details.
D<dial string>
Causes the MT2 to transition from the command state to the online state. The <dial
string> is optional. For circuit switched data services, the dial string may contain
the following characters: Digits 0 to 9, *, #, A, B, C, and D.
The dial string may contain the following dial modifiers:
T Tone dialling [ignore]
P Pulse dialling [ignore]
, Pause during dialling
W Wait for dial tone
@ Wait for quiet answer
! Hook flash
[$] Wait for billing tone (for credit-card calls)
; After dialling, the IWF enters the online command state and maintains the
connection
H0
Causes the MT2 to transition from online command state to command state. Use of
the digit ‘0’ is optional (see EIA/TIA-602).
O0
Causes the MT2 to transition from online command state to online state. Use of the
digit ‘0’ is optional (see EIA/TIA-602).