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4 AT Commands, S-Registers, & Result Codes
35
MultiModemZBA-V-V92 User Guide
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
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 ini-
tiate 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. Other-
wise,
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