User`s guide
User’s Guide 53
Extended Data Commands
&$ Displays a list of ampersand (&) commands.
&An Enables/disables additional result code subsets.
See Xn.
&A0 ARQ result codes disabled
&A1 ARQ result codes enabled
&A2 Modulation indicator added
&A3 Protocol indicators addedLAPM/MNP/NONE
(error control) and V42bis/MNP5 (data
compression)
&Bn Manages modem’s serial port rate.
&B0 Variable, follows connection rate
&B1 Fixed serial port rate
&B2 Fixed in ARQ mode, variable in non-ARQ
mode
&Cn Controls Carrier Detect (CD) signal.
&C0 CD override
&C1 Normal CD operations
&Dn Controls Data Terminal Ready (DTR) operations.
&D0 DTR override
&D1 DTR toggle causes online Command mode
&D2 Normal DTR operations
&D3 Resets on receipt of DTR
&Fn Loads a read-only (non-programmable) factory
configuration.
&F0 Generic template, no flow control
&F1 Hardware flow control template
&F2 Software flow control template
&Gn Sets Guard Tone.
&G0 No guard tone, U.S. and Canada
&G1 550 Hz guard tone, some European countries,
requires B0 setting.
&G2 1800 Hz guard tone, U.K., requires B0 setting.