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AT Commands and S-Registers
4-53821-A2-GB20-30 February 1998
Table 4-1
(3 of 13)
3821
Plus
AT Commands
P – Pulse Dial
Sets the modem for Pulse Dial mode. See D command.
Q
n
– Result Codes
Result codes are informational messages (such as Connect and Ring) sent from the modem and displayed on the
asynchronous DTE terminal. Refer to Table B-1 for a list of result codes.
Q, Q0 Enables modem to send result codes to the DTE.
Q1 Disables modem from sending result codes to the DTE.
Q2 Enables in Originate mode only for modem to send result codes to the DTE. Required for most
UNIX applications.
S
n
=
r
– Change S-Register
Changes the contents of an S-register, where
n
is the S-register, and
r
is the new value.
S
n
? – Display S-Register
Displays the value of an S-register, where
n
is the S-register number.
T – Tone Dial
Sets the modem for Tone (DTMF) dial mode. See D command.
V
n
– Result Codes Format
Controls whether or not result codes appear as words or as numeric codes. Some DTEs do not recognize result codes as
words; therefore, numbers are required. The Numbers (2) format is required for some modem pooling applications. Refer
to Table B-1 for a list of result codes.
V, V0 Displays result codes in Number (1) format (digits).
V1 Displays result codes as text.
V2 Displays result codes in Number (2) format (digits).