Manual

Smart Machine Smart Decision

SIM800 Series_AT Command Manual_V1.09 37 2015-08-03

To prevent the +++ escape sequence from being misinterpreted as data, it

should comply to following sequence:

No characters entered for T1 time (1 second)

"+++" characters entered with no characters in between (1 second)

No characters entered for T1 timer (1 second)

Switch to Command mode, otherwise go to step 1.

Parameter Saving

Mode

NO_SAVE

Max Response

Time

Reference

V.25ter

Note

To return from Command mode back to data mode: Enter ATO.

2.2.13 ATO Switch from Command Mode to Data Mode

ATO Switch from Command Mode to Data Mode

Response

TA resumes the connection and switches back from Command mode to data

mode.

CONNECT

If connection is not successfully resumed

ERROR

else

TA returns to data mode from command mode CONNECT <text>

Note: <text> only if parameter setting ATX>0

Execution

Command

ATO[n]

Parameter

<n> 0 Switch from command mode to data mode.