
AT Commands for the MT5656ZDX, MT5600ZDX, MT5600BA/BL-Series Modems
18
Multi-Tech Systems, Inc. Commands Reference Guide (PN S000273D)
Escape Commands
Command: +++ Escape Sequence.
Type +++ and wait for OK response. Then issue the hang-up command by typing ATH <CR>.
(<CR> indicates that you must click Enter).
Values: n/a
Description: Puts the modem in online command mode.
Command: * * * Initiates Remote Configuration Sequence (Remote Configuration is not supported in
MT5600ZDX)
*E Escape Remote Configure Sequence (Remote Configuration is not supported in
MT5600ZDX)
Values: n/a
Description: * * * Initiates remote configuration mode while online with remote modem. The remote
modem configuration escape command (*E) is defined in Register S13.
V.92 Commands
Command: +PCW=n Call Waiting Enable
Values: n = 0, 1, or 2
Default: 2
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? 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=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 currrent value
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