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CHAPTER 5: AT Commands, S-Registers, and Result Codes
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.
