Paradyne COMSPHERE 3830, User Manual

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4. AT Command Set and S-Registers
4-9 3830-A2-GB91-30 August 1998
Table 4-2
(3 of 23)
Model 3830 AT Commands
D n , continued
R – Reverse Dial mode. Causes the originating modem to send out an
answertone once it no longer detects ringback. (Ringback is the ring you
hear at the originating site when making a call.) The R parameter must be
the last character in the dial string. For correct operation, at least one
ringback must be detected; therefore, the remote modem should be
configured to answer on the second ring or subsequent rings.
@ – Quiet answer. Wait for five seconds of silence after dialing the
number. If the silence is not detected, the modem sends a NO ANSWER
result to the DTE.
! – Hook flash. This causes the modem to go on-hook for 0.5 seconds,
then return to off-hook.
; – Return to Command mode. Modem returns to Command mode after
dialing a number without disconnecting the call. This is useful when the
number exceeds 40 characters, or when the wait time between parts of a
dial string is unknown.
Space, – , and ( ) . These characters are ignored by the dial string and
can be included in the dial string to enhance readability.
DS= n

Dial Stored Number
Dials the number stored in Location n (1–10). (To store a telephone
number, refer to the &Zn=x command.)
E n

Command Character Echo
Controls whether or not characters are echoed back to the DTE when the
modem is in Command mode.
E0 Disables echo to the DTE.
E1 Enables echo to the DTE.
H n

Hook Switch Control
Allows the modem to go off-hook or on-hook.
H or H0 Modem goes on-hook.
H1 Modem goes off-hook.