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8: Setup Mode: Channel Configuration
Table 8-9. Modem Mode Messages
Message Meaning
Full Verbose
OK
Command was executed without error.
CONNECT
A network connection has been established.
NO CARRIER
A network connection has been closed.
RING n.n.n.n.
A remote device, having IP address n.n.n.n, is connecting to this
device.
Numeric Response
0
OK
1
Connected
2
Ring
3
No Carrier
4
Error
Received commands must begin with the two-character sequence AT and be terminated with
a carriage return character.
The unit ignores any character sequence received not starting with AT, and only recognizes
and processes single AT-style commands. The unit treats compound AT commands as
unrecognized commands.
If the Full Verbose option is in effect, the unit responds to an unrecognized command string
that is otherwise formatted correctly (begins with AT and ends with carriage return) with the
"OK" message and takes no further action.
If the Numeric Response option is in effect, the unit responds to an unrecognized command
string that is otherwise formatted correctly with the "OK" message and takes no further action.
When an active connection is in effect, the unit transfers data and does not process
commands received from the serial interface.
When a connection is terminated or lost, the unit reverts to command mode.
When an active connection is in effect, the unit terminates the connection if it receives the
following sequence from the attached serial device:
No serial data is received for one second.
The character sequence +++ is received, with no more than one second between each
two characters.
No serial data is received for one second after the last + character. At this time, the unit
responds affirmatively per the selected echo/response mode.
The character string ATH is received, terminated with a carriage return. The unit
responds affirmatively according to the selected echo/response mode and drops the
network connection. The serial interface reverts to accepting command strings.
Micro125 User Guide 49