
4. AT Command Set and
Table
(3 of 23)
Model 3830 AT Commands
Dn, 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
;± 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.)
En 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.
Hn Hook Switch Control
Allows the modem to go
H or H0 Modem goes
H1 Modem goes
August 1998 |