Chapter 4 - troubleshooting, Introduction, Chapter 3 - at commands – Multi-Tech Systems MT128ISA-UV User Manual
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Chapter 3 - AT Commands
MT128ISA/PCI
ATS1?
Register 1 is read only, display the ring count
ATS2
Escape code character (S2=43, ASCII +)
ATS3
Carriage return character (S3=13, representing a carriage return)
ATS4
Line feed character (S4=10, representing CTRL J or the linefeed character)
ATS5
Back space character (S5=8, representing CTRL H)
ATS7
Wait for carrier after dial (S7=30 seconds default)
ATS12
Escape code guard time (S12=50 default )
ATS25
Delay to DTR (S25=5 default )
ATS30
Disconnects automatically if no data transmission in n=10 seconds (n=0 to 255; default is S50=0, so it
does not disconnect connection
ATS38
Windows size of HDLC 56K or 64K, 7 default
ATS39
Packet size of HDLC 56K or 64K from 1 to 2048, 2048 default
ATS40
Windows size of V.120, 7 default
ATS41
Packet size of V.120, 256 default
ATS44
Window size of X.75 (Transparent), 2 default
ATS45
Packet size of X.75 (Transparent) from 12048, 1024 default
ATS46
Window size of X.75 T.70 NL, 2 default
ATS47
Packet size of X.75 T.70 NL from 1 to 2048, 130 default
ATS50
Window size of X.75 ISO 8208, 2 default
ATS51
Packet size of X.75 ISO 8208 from 128 to 2048, 1024 default
ATS53
Average data flow from 1000 to 7000 bytes (default is 4, which is 4000 bytes). Activates second
channel if average data flow is over 4000 bytes in 10 seconds.
ATS54
Time period from 5 to 20 minutes (default is 5). Disconnects second channel if average data flow is
below n bytes (set by ATS53) in 5 minutes. Only available in MLPPP BOD mode, ATB43.
ATVn
Verbose command
ATV0
Return digit result code
ATV1
Returns word result code ( default )
ATXn
Enable extended result code
ATZ
Reset
+++
Escape command
AT&Cn
Control DCD
AT&C0
Keep always the DCD line ON ( the same as AT&C, default )
AT&C1
DCD line is active if connected
AT&E
Select the line speed in the B channel
AT&E0
64K bps (default)
AT&E1
56K bps
AT&F
Reset registers to factory setting
AT&R
Request to send
AT&S
Handle DSR
AT&S0
Keep DSR always ON ( the same as AT&S )
AT&ZIn*m
Filter the incoming call and accept it when called party number is the same as n and called party
subaddress is the same as m (option, * is the subaddress symbol)
AT&ZOn*m
Make a call with this caller party number (n * m). n is the local telephone number, * is the sub
address symbol, if needed Command Description (option), and m is the sub address (option).
AT#C
Caller ID setting
AT#C?
Display the current Caller ID mode
AT#C0
Disable Caller ID (default)
AT#C1
Enable Caller ID