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Chapter 5 – AT Commands, S-Registers, and Result Codes
SocketModem Global MT5634SMI Developer’s Guide 37
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 what has been negotiated. Valid only if
MOH is enabled and the modem is off-hook or in data mode. Otherwise, ERROR will be
returned.
+PMHR=0 Deny MOH request
+PMHR=1 Grant MOH request with 10 second timeout
+PMHR=2 Grant MOH request with 20 second timeout
+PMHR=3 Grant MOH request with 30 second timeout
+PMHR=4 Grant MOH request with 40 second timeout
+PMHR=5 Grant MOH request with 1 minute timeout
+PMHR=6 Grant MOH request with 2 minute timeout
+PMHR=7 Grant MOH request with 3 minute timeout
+PMHR=8 Grant MOH request with 4 minute timeout
+PMHR=9 Grant MOH request with 6 minute timeout
+PMHR=10 Grant MOH request with 8 minute timeout
+PMHR=11 Grant MOH request with 12 minute timeout
+PMHR=12 Grant MOH request with 16 minute timeout
+PMHR=13 Grant MOH request with indefinite timeout
+PMHR=? Displays the allowed values
+PMHR? Displays the current value
Command: +PMHT=n Modem on Hold Timer
Values: n = 0–13
Default: 0
Description: Determines if the modem will accept a V.92 Modem on Hold (MOH) request and will set the
MoH timeout.
+PMHT=0 Deny MOH request
+PMHT=1 Grant MOH request with 10 second timeout
+PMHT=2 Grant MOH request with 20 second timeout
+PMHT=3 Grant MOH request with 30 second timeout
+PMHT=4 Grant MOH request with 40 second timeout
+PMHT=5 Grant MOH request with 1 minute timeout
+PMHT=6 Grant MOH request with 2 minute timeout
+PMHT=7 Grant MOH request with 3 minute timeout
+PMHT=8 Grant MOH request with 4 minute timeout
+PMHT=9 Grant MOH request with 6 minute timeout
+PMHT=10 Grant MOH request with 8 minute timeout
+PMHT=11 Grant MOH request with 12 minute timeout
+PMHT=12 Grant MOH request with 16 minute timeout
+PMHT=13 Grant MOH request with indefinite timeout
+PMHT=? Displays the allowed values
+PMHT? Displays the current value