AT Commands F-11
AT Commands
$
(Bong Detect) Detects an AT&T BELLCORE service prompt to enter a calling card
number and authorization. When the modem encounters a “$” modifier within a dial
string, it waits to receive this “bong” signal. Once it detects it, the modem continues
processing the dial string. If the time set by register, S7 elapses first, the modem hangs
up and displays NO PROMPT TONE.
NOTE
This modifier is valid only in the United States, Canada, Mexico, and Israel.
Operating Mode Dial Modifiers
Use the following dial modifiers to override the \Nn command setting. Placed
anywhere in the dial string, these modifiers cause the modem to override the \Nn
setting for that connection only.
Example
If your modem is set for \N3 (auto-reliable) for answering and you are calling a modem
that you know does not support error correction, use the Z dial modifier to force normal
mode: ATD 5551234Z
M
(Dial in LAPM Mode) Placed anywhere in the dial string, causes the modem to
override the current operating mode and dial in LAPM reliable mode for the current
connection only.
Q
(Dial in LAPM Mode with Fallback to Normal) Placed anywhere in the dial string,
causes the modem to override the current operating mode and dial in LAPM reliable
mode with fallback to normal mode for the current connection only.
U
(Dial in Direct Mode) Placed anywhere in the dial string, causes the modem to override
the current operating mode and dial in direct mode for the current connection only.
V
(Dial in LAPM Mode with Fallback to MNP) Placed anywhere in the dial string,
causes the modem to override the current operating mode and dial in LAPM reliable
mode with fallback to MNP for the current connection only.
X
(Dial in Auto-Reliable Mode) Placed anywhere in the dial string, causes the modem to
override the current operating mode and dial in auto-reliable mode for the current
connection only.
Y
(Dial in MNP Reliable Mode) Placed anywhere in the dial string, causes the modem to
override the current operating mode and dial in MNP reliable mode for the current
connection only.
Z
(Dial in Normal Mode) Placed anywhere in the dial string, causes the modem to
override the current operating mode and dial in normal mode for the current connection
only.
