Airlink CDMA/1x manual AT Mode

Host Modes

in the AT Command listing, page 66) to the desired mode. If this setting is non- zero, the modem will enter the specified mode after 5 seconds. If you want to can- cel this behavior, the ATMD0 command can be used before the 5-second time-out expires.

If the modem is in any mode other than AT or PassThru, the AT command mode can be re-entered by:

•Deactivating DTR (if &D2 or Ignore DTR, S211, is not set).

•Issuing the +++ escape sequence (if Disable AT Escape, DAE, is not set).

•Resetting or Power cycling the modem.

PassThru Mode can only be exited by resetting the modem.

Note: DTR needs to be asserted (S211=1 or &D0) by the host before PPP Mode, SLIP Mode, UDP PAD Mode, or TCP PAD Mode can be entered.

AT Mode

AT commands are used to configure the modem, command it to do something, or query a setting. For a full listing of the AT commands, refer to page 53.

AT commands must always be terminated by <CR> (ASCII character 0x0D).

If E=1 (Echo On), the AT command (including the terminating <CR>) will be displayed (output) before any responses.

Two settings affect the format of AT command output: V (Verbose) and Q (Quiet).

If Q=1 (Quiet On), no result codes are output whatsoever, so there is no response generated by a (non query) command.

If Q=0 (Quiet Off), result codes are output. The format of this output is then affected by the Verbose setting.

If Quiet mode is off, the result code is affected as follows:

For V=1 (Verbose mode), the textual result code is surrounded by <CR><LF> and any AT query response is also surrounded by <CR><LF>.

24 Raven CDMA User Guide for Verizon, version 2.23