Maxim Integrated 73M2901CE AT Command - Manual (Page 10)

73M2901CE AT Command User Guide UG_2901CE_027
10 Rev. 2.0
time is 30 seconds, and can be changed by modifying register S7. Result Codes 7 and 8 will be
reported regardless of which Result Code Set is selected.
! An ! (exclamation mark) causes a "hook flash." This simulates hanging up for 1/2 second and then
reconnecting. It is typically used for transferring calls.
W Causes the modem to wait for a dial tone for a specified length of time before proceeding. The
default is 8 seconds, and can be changed by modifying register S66. Result Code 6 will always be
included regardless of which Result Code Set is selected.
J
PTT Test. See the J[n] command.
2.6 E[n] – Echo Commands On/Off
n = 0 or 1 (factory default = 1)
Causes the modem to either echo characters or not to echo characters while in the Command State.
E0
Command State Echo mode is OFF.
E1
Command State Echo mode is ON.
2.7 F– Load Factory Defaults
The F command replaces the current active configuration profile with the factory standard configuration
profile stored in permanent memory. Returns ERROR result code, if modem is off-hook.
2.8 G – Guard Tone Select
This command selects the guard tone.
G0 Guard tones disabled (default).
G1 550Hz guard tone enabled.
G2 1800Hz guard tone enabled.
2.9 H[n] – On-Hook/Off-Hook Control
n = 0 or 1 (factory default = 0)
The H[n] command causes the modem to go off-hook or on-hook. (Going off-hook means that the modem
"picks up" the telephone; going on-hook means that the modem "hangs up" the telephone.) The H[n]
command applies only to asynchronous operation.
H0
Go On-hook (hang up) or terminate PTT test.
H1
Go Off-hook (pick up the phone).
Note: ON HOOK:
Commands used:
@Z, Z, H0, F, J0, at the beginning of hook flash, at a pulse break and at disconnect and reset.
OFF HOOK:
Commands used:
H1, D, J1, J2, J3, J4, A and auto answer