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Synchronous Transmit Clock Source &X
The &X commands select internal, external, or receive clock as the
transmit clock source.
Command
&X
&X1
&X2
V.34 Rate Selection Thresholds *TH
The *TH commands sets the V.34 rate selection thresholds. The V.34
modulation dynamically selects the optimum bit rate to run, based on
line quality.
Command
*TH
*TH1
*TH2
V.34 Asymmetric Bit Rates *AS
The *AS command enables or disables the V.34 asymmetric bit rate
capability. This feature allows the modem to run different bit rates on
the receiver and transmitter.
Command
*AS
*AS1
Modulation *MM
The *MM command sets the current modulation type to use when
attempting to make a connection. Using this command automatically
selects the maximum DCE speed (%B) for the selected modulation.
Command
*MM
*MM1
*MM2
*MM3
*MM4
Operation
Internal clock
External clock
Receive clock
Operation
Low V.34 threshold (10
Medium V.34 threshold (10
High V.34 threshold (10
Operation
Disable V.34 asymmetric bit rates
Enable V.34 asymmetric bit rates
Operation
Automode (typically used on dial line)
V.21
B103
Reserved
B212A
Modem 3600
AT Commands
- 6
BER)
- 4
BER)
- 2
BER)
5-27
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