User's Manual

C1 March 2010

Once a Parameter is changed, the modem will begin using the new

arameter and the new parameter is saved to non-volatile.

5.4. Reading a Parameter

To read the value of a particular setting, issue the command, with no

parameter. The modem will return the value followed by an “OK”. The

modem’s OK response is:

The value in ASCII decimal format.

A <CR> <LF> (<CD> = ASCII 0D, <LF> = ASCII 0A).

An “O”, “K”, <CR>, and <LF> sequence.

For example, if the user enters the command to read the M7’s modem

address and its address was 1234, the user would issue the following

command:

ATDT<cr>

and the modem will respond with:

1234 <CR> <L

F> OK <CR> <LF>

To get on-line help with a command, enter the command and put a question

mark in for the parameter. For example, to see what the ATDT command is

for, type ATDT ?. The modem will respond by listing a brief description of the

command. To see a list of all commands, type HELP.

5.5. CONFIG Button

If certain parameters within the modem are modified in a manor that causes

the modem to cease functioning or if the user cannot enter the command

mode via the “+++” method described above, there is a small push button

internal to the M7 modem to assist in this case. This CONFIG button may be

pressed at any time, and forces the modem into a known operational state.

The CONFIG button is located inside the modem. Remove the rear cover,

exposing the two circuit boards. The button is in the center of the lower circuit

board as shown below.

The default settings that the modem will revert to when the CONFIG button is

pressed are:

1. Serial port 9600 baud, 8 data bits 1 stop, no parity

. ATCT setting set to 60000 (60 second time-out)

3. Serial port on the front of the unit in RS232 mode, 9600bps, N/8/1.