Eicon Networks DIVA T/A ISDN Modem AT!X18, Defined as follows, Limit of the range is 4095-4 =

Always On / Dynamic ISDN AT Commands

AT!X18	Set Normal Mode for Bandwidth on Demand. Sets the Bandwidth on Demand
	thresholds and delays to pre-configured values. ‘Normal Mode’ is equivalent to the
	default values for each setting, and is defined as follows:
	AT!X10=5		Sets ‘Delay before Opening 1st B-channel’ to 5 seconds.
	AT!X11=70		Sets ‘1st B-channel Opening Threshold’ to 70 seconds.
	AT!X12=40		Sets ‘1st B-channel Closing Threshold’ to 40 seconds.
	AT!X13=5		Sets ‘Delay before Opening 2nd B-channel’ to 5 seconds.
	AT!X14=70		Sets ‘2nd B-channel Opening Threshold’ to 70 seconds.
	AT!X15=40		Sets ‘2nd B-channel Closing Threshold’ to 40 seconds.
	AT!X17=1000		Sets the ‘X.25 Transmit Queue Threshold’ to 1000 bytes.
AT!X19	Set Economy Mode for Bandwidth on Demand. Sets the Bandwidth on Demand
	thresholds and delays to pre-configured values. ‘Economy Mode’ is defined as
	follows:
	AT!X10=20		Sets ‘Delay before Opening 1st B-channel’ to 20 seconds.
	AT!X11=80		Sets ‘1st B-channel Opening Threshold’ to 80 seconds.
	AT!X12=60		Sets ‘1st B-channel Closing Threshold’ to 60 seconds.
	AT!X13=60		Sets ‘Delay before Opening 2nd B-channel’ to 60 seconds.
	AT!X14=60		Sets ‘2nd B-channel Opening Threshold’ to 60 seconds.
	AT!X15=80		Sets ‘2nd B-channel Closing Threshold’ to 80 seconds.
	AT!X17=2000		Sets the ‘X.25 Transmit Queue Threshold’ to 2000 bytes.
AT!X20	Set Performance Mode for Bandwidth on Demand. Sets the Bandwidth on
	Demand thresholds and delays to preconfigured values. ‘Performance Mode’ is
	defined as follows:
	AT!X10=1		Sets ‘Delay before Opening 1st B-channel’ to 1 second.
	AT!X11=50		Sets ‘1st B-channel Opening Threshold’ to 50 seconds.
	AT!X12=20		Sets ‘1st B-channel Closing Threshold’ to 20 seconds.
	AT!X13=1		Sets ‘Delay before Opening 2nd B-channel’ to 1 second.
	AT!X14=60		Sets ‘2nd B-channel Opening Threshold’ to 60 seconds.
	AT!X15=80		Sets ‘2nd B-channel Closing Threshold’ to 80 seconds.
	AT!X17=500		Sets the ‘X.25 Transmit Queue Threshold’ to 500 bytes.
AT!X21=n	Specify Lowest X.25 Logical Connection Number. Specifies the lowest LCN that
	X.25 will use for establishing the AO/DI connection.
	Range: 1 to 4095. If you specify more than 1 LCN (using AT!X25), the upper limit of the
	range is 4095 minus the number of LCNs. For example if AT!X25=4, then the upper
	limit of the range is 4095-4 = 4091.
	Default: 1.
AT!X22=n	Enable/Disable AO/DI. Specifies whether the AO/DI feature is enabled or disabled.
	n=0	Off (default).
	n=1	On.

DIVA T/A ISDN Modem Reference Guide ◆ Page 52