Multitech MultiModem ZBA Series At Commands Reference Manual page 18

Command: +PMHT=n Modem on Hold Timer
Values:
Default:
Description:
Command: +PQC=n Quick Connect Control
Values:
Default:
Description:
Command: +DCS=x,y
Values:
Default:
Description:
Command: +DR=n V.44 Data Compression Reporting
Values:
Default:
Description:
Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272J)
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n = 0–13
0
Determines if the modem will accept a V.92 Modem on Hold request; sets 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
n = 0, 1, 2, or 3
3
Controls the V.92 shortened Phase 1 and Phase 2 startup procedures (Quick Connect).
When line conditions are stable, quick connect results in shortened connect times; however,
significant fluctuation in line conditions from call to call can result in longer connect times, in
which case it may be advisable to disable quick connect.
+PQC=0 Enables Short Phase 1 and Short Phase 2 (Quick Connect)
+PQC=1 Enables Short Phase 1
+PQC=2 Enables Short Phase 2
+PQC=3 Disables Short Phase 1 and Short Phase 2
+PQC=? Displays the allowed values
+PQC? Displays the current value
Select V.44 Data Compression
x = 0 or 1 (V.42bis)
y = 0, 1, or 2 (V.44)
1, 2
Selects V.42bis/V.44 data compression.
+DCS=0,0 V.42bis and V.44 data compression are both disabled.
+DCS=0,1 V.42bis is disabled; V.44 data compression is acceptable.
+DCS=0,2 V.42bis is disabled; V.44 only when connected to a V.92 server.
+DCS=1,0 V.42bis is acceptable; V.44 data compression is disabled.
+DCS=1,1 V.42bis is acceptable; V.44 data compression is acceptable.
+DCS=1,2 V.42bis is acceptable; V.44 only when connected to a V.92 server.
+DCS=? Displays the allowed values.
+DCS? Displays the current value.
n = 0 or 1
0
Enables or disables the V.44 data compression report. If the compression report is enabled,
the +DR:<type> intermediate result code reports the current DCE-DCE data compression
type. It is issued after the Error Control Report (+ER) and before the final result code (e.g.,
CONNECT). The intermediate result code descriptions are shown after the command -
descriptions.
+DR=0 Disables the V.44 compression report.
+DR=1 Enables the V.44 compression report.
+DR=? Displays the allowed values.
+DR? Displays the current value.
+DR: NONE Data compression not in use.
+DR: V42B V.42bis is in use in both directions.
+DR: V44 V.44 is in use in both directions.
Chapter 1 – AT Commands
18