6-2
C
HAPTER
6: C
ONTROLLING
R
ESULT
C
ODE
D
ISPLAYS
Additional Result
Code Subsets
ARQ (Automatic Repeat Request) is used in this manual to denote calls
that use error control.
.
The numeric identifiers for &A3 result codes are the same as those used
for &A2. If you request numeric display (V0) and &A3, you won’t be able
to distinguish &A2 from &A3 codes.
For your modem to Command
Display only connection rate.
AT&A0
Display connection rate and ARQ result codes.
AT&A1
Display connection rate, ARQ result code, and protocol
information (V32, VFC, V34, or x2/v.90). If your software
cannot handle the added protocol information, select &A1
or &A0.
AT&A2
Display connection rate, ARQ result code, protocol, error
control (LAPM, MNP, or NONE), and data- compression type
(V42BIS, MNP5) indicators.
AT&A3
(Default)
