User Manual

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Chapter 4—AT Commands, S-Registers, Result Codes
0 Disable automode
1 Enable automode (default)
max_rate An optional number that specifies the highest rate at which the modem
may establish an upstream (transmit) connection. The value is decimal
coded in units of bps, for example, 33600 specifies the highest rate to be
33600 bps.
0 Maximum rate determined by the modulation selected in mod (default).
300–33600 Maximum rate value limited by the modulation selected in mod. For
valid max_rate values for each mod value, see the following table.
V21, Bell103 300
V22, V23C, Bell212A 1200
V22B 2400
V32 14400, 12000, 9600, 7200, 4800
V32B 19200, 16800, 14400, 12000, 9600, 7200, 4800
V92, V90, V34 33600, 31200, 28800, 26400, 24000, 21600,19200, 16800,
14400, 12000, 9600, 7200, 4800, 2400
mod value Valid max_rate values (bps)
max_rx_rate An optional number that specifies the highest rate at which the modem
may establish a downstream (receive) connection. The value is decimal
coded in units of bps, e.g., 28800 specifies the highest rate to be 28800
bps.
0 Maximum rate determined by the modulation selected in mod (default).
300–56000 Maximum rate value limited by the modulation selected in mod. See “Pos
sible rates” in the mod table.
Command: +PCW=n Call Waiting Enable
Values: n = 0, 1, or 2
Default: 0
Description: Controls the action to be taken upon detection of a call waiting tone in V.92 mode. Val-
ues specified by this command are not modified when an AT&F command is issued.
+PCW=0 N/A
+PCW=1 Hangs up
+PCW=2 Ignores V.92 call waiting
+PCW=? Displays the allowed values
+PCW? Displays the currrent value
Command: +PIG=n PCM Upstream Ignore
Values: n = 0 or 1
Default: 1
Description: Controls the use of PCM upstream during V.92 operation. PCM upstream allows
faster upload speeds to a V.92 server.
+PIG=0 Disables PCM upstream
+PIG=1 Enables PCM upstream
+PIG=? Displays the allowed values
+PIG? Displays the currrent value
Command: +PMH=nModem on Hold Enable
Values: n = 0 or 1
Default: 1
Description: Controls whether modem on hold procedures are enabled during V.92 operation. Nor-
mally controlled by a modem on hold program. Values specified by this command are
not modified when an AT&F command is issued.