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TECHNICAL QUICK REFERENCE
122
&A3 Protocol indicators
added
LAPM/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
&F1 Hardware flow control
template
&F2 Software flow control
template