At Commands; At Commands Definition; Ml-Ppp Settings Using The At Commands - Intracom netMod User Manual

User's Manual of netMod Network Termination Unit

AT COMMANDS

AT COMMANDS Definition

The AT COMMANDS is a group of standard commands, used for the control of
communication devices like netMod. Each command starts with the AT prefix and then
follows the main command body that states which function has to be performed.
You can configure netMod using the AT COMMANDS and a simple communication
program (e.g. The Hyper Terminal of Windows '95/98/Me/2000/XP).
If you select a communication program, you can select different baud-rates. netMod will
automatically recognise the selected rate and it will respond to the AT COMMANDS. The
rate of 115200bps is the usual choice. Always use the Hardware Flow Control to inspect
the data flow on the serial port. The AT COMMANDS, described below, refer to S/W
versions later than the V1.7 version.

ML-PPP Settings using the AT COMMANDS

ATJAn: where n is the B-channel's addition limit, in kilobits per second (kbps). The factory
pre-set value is 52 kbps.
ATJSn: where n is the B-channel's subtraction limit, in kilobits per second (kbps). The
factory pre-set value is 48 kbps.
ATKAxn: where x defines the kind of time units (x=M for minutes or x=S for seconds) and
n defines the time period in the corresponding time units. When the rate during this time
period is above the limit, the second B-channel will be added. The factory pre-set value is
20 seconds.
ATKSxn: where x defines the kind of time units (x=M for minutes or x=S for seconds) and
n defines the time duration in the corresponding time units. When the rate during this time
duration is below the limit, the second B-channel will be subtracted. The factory pre-set
value is 40 seconds.
Conclusively, in accordance with the factory values, when the data rate is above 52kbps
for a time period of 20 seconds, the second B-channel will be added. When both B-
channels are used and the rate drops below 48kbps for a time period of 40 seconds, the
second B-channel will be subtracted from the connection.
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