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V.92 Commands
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. Values
specified by this command are not modified when an AT&F command is issued.
+PCW=0 Toggles V.24 Circuit 125 and collects Caller ID if enabled by +VCID
+PCW=1 Hangs up
+PCW=2 Ignores V.92 call waiting
+PCW=? Displays the allowed values
+PCW?
Command: +PIG=n PCM Upstream Enable
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
+PIG=1
+PIG=?
+PIG?
Command: +PMH=n Modem on Hold Enable
Values:
n = 0 or 1
Default:
1
Description:
Controls if modem on hold procedures are enabled during V.92 operation. Normally
controlled by a modem on hold program. Values specified by this command are not modified
when an AT&F command is issued.
+PMH=0 Enables V.92 modem on hold
+PMH=1 Disables V.92 modem on hold
+PMH=? Displays the allowed values
+PMH? Displays the current value
Command: +PMHF V.92 Modem Hook Flash
Values:
n/a
Default:
n/a
Description:
Causes the DCE to go on-hook for a specified period of time, and then return off-hook for at
least a specified period of time. The specified period of time is normally one-half second, but
may be governed by national regulations. "ERROR" is returned if MOH is not enabled.
Command: +PMHR=n Modem on Hold Initiate
Values:
n = 0–13
Default:
0
Description:
+PMHR is an action command that causes the modem to initiate MOH with the central site
modem. It returns the following values to indicate negotiated values. Valid only if MOH is
enabled and the modem is off-hook or in data mode. Otherwise, ERROR will be returned.
+PMHR=0
+PMHR=1
+PMHR=2
+PMHR=3
+PMHR=4
+PMHR=5
+PMHR=6
+PMHR=7
+PMHR=8
+PMHR=9
+PMHR=10
+PMHR=11
+PMHR=12
+PMHR=13
+PMHR=?
+PMHR?
Multi-Tech Systems, Inc. AT Commands Reference Guide (PN S000272E)
Displays the current value
Enable PCM upstream
Disable PCM upstream
Displays the allowed values
Displays the current value
Deny MOH request
Grant MOH request with 10 second timeout
Grant MOH request with 20 second timeout
Grant MOH request with 30 second timeout
Grant MOH request with 40 second timeout
Grant MOH request with 1 minute timeout
Grant MOH request with 2 minute timeout
Grant MOH request with 3 minute timeout
Grant MOH request with 4 minute timeout
Grant MOH request with 6 minute timeout
Grant MOH request with 8 minute timeout
Grant MOH request with 12 minute timeout
Grant MOH request with 16 minute timeout
Grant MOH request with indefinite timeout
Displays the allowed values
Displays the current value
Chapter 1 – AT Commands
18
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