Lantronix Micro Embedded Integration Kit (EIK) - User Guide - Page 27

Using Setup Mode for Configuration 4-10 Without Echo Full Verbose In Modem Mode, echo refers to the echo of all of the characters entered in command mode; it does not mean to echo data that is transferred. Quiet Mode (without echo) refers to the modem not sending an answer to the commands received (or displaying what was typed). The unit echoes modem commands and responds to a command with a message string shown in the table below. 1-Character Response The unit echoes modem commands and responds to a command with a single character response. Table 4-8. 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. 1-Character Response 0 OK 1 Connected 2 Ring 3 No Carrier 4 Error Received commands must begin with the two-character sequence AT and terminate with a carriage return character. (See Table 4-9. Monitor Mode Commands on page 4-11.) 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 1-Character Response option is in effect, the unit responds to an unrecognized command string that is otherwise formatted correctly with OK 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: 1. No serial data is received for one second. 2. The character sequence +++ is received, with no more than one second between each two characters. 3. No serial data is received for one second after the last + character. At this time, the unit responds affirmatively for the selected echo/response mode. Embedded Integration Kit User Guide