Rainbow Electronics GM862-QUAD-PY - Manual (Page 55)

AT Commands Reference Guide
80000ST10025a Rev. 5 - 09/07/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 55 of 434
3.5.3.3.3 Pulse Dial - P
P - Pulse Dial SELINT 0 / 1 / 2
ATP Set command has no effect is included only for backward compatibility with
landline modems.
Reference V25ter.
3.5.3.3.4 Answer - A
A - Answer SELINT 0 / 1 / 2
ATA Execution command is used to answer to an incoming call if automatic
answer is disabled.
Note: This command MUST be the last in the command line and must be
followed immediately by a character.
Reference V25ter.
3.5.3.3.5 Disconnect - H
H - Disconnect SELINT 0 / 1 / 2
ATH Execution command is used to close the current conversation (voice, data
or fax).
Note: this command can be issued only in command mode; when a data
conversation is active the device is in on-line mode (commands are not
sensed and characters are sent to the other party), hence escape sequence
(see register S2) is required before issuing this command, otherwise if &D1
option is active, DTR pin has to be tied Low to return in command mode.
Reference V25ter.
3.5.3.3.6 Return To On Line Mode - O
O - Return To On Line Mode SELINT 0 / 1
ATO Execution command is used to return to on-line mode from command mode.
If there's no active connection it returns ERROR.
Note: After issuing this command, if the device is in conversation, to send
other commands to the device you must return to command mode by
issuing the escape sequence (see register S2) or tying low DTR pin if &D1
option is active.
Reference V25ter.
O - Return To On Line Mode
SELINT 2
ATO Execution command is used to return to on-line mode from command mode.
If there's no active connection it returns NO CARRIER.