Lantronix UDS1100 manual MessageMeaning, No Carrier

	7: Setup Mode: Channel Configuration
Data Echo & Modem	Full Verbose: The unit echoes modem commands and responds to
Response	a command with a message string shown in the table below.
	Numeric Response: The unit echoes modem commands and
	responds to a command with a numeric response.
Modem Responses	Full Verbose: The unit does not echo modem commands and
Only	responds to a command with a message string shown in the table
	below.
	Numeric Response: The unit does not echo modem commands
	and responds to a command with a numeric response.

Table 4-11. Modem Mode Messages

MessageMeaning

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

1

2

3

4

OK

Connected

Ring

No Carrier

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 a "0" 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.

UDS1100 User Guide 47