User Manual

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ISI5634PCI/4/8 User Guide
Command: %DCn AT Command Control
Values: n = 0 or 1
Default: 0
Description: %DC0 Modem responds to AT commands.
%DC1 Modem ignores AT commands.
Command: %En Fallback and Fall Forward Control
Values: n = 0, 1, or 2
Default: 2
Description: %E0 Disables fallback and fall-forward.
%E1 Enables fallback, disables fall-forward.
%E2 Enables fallback and fall-forward.
Command: +DCS=x,ySelect V.44 Data Compression
Values: x = 0 or 1 (V.42bis) y = 0, 1, or 2 (V.44)
Default: 1, 2
Description: 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.
Command: +DR=nV.44 Data Compression Reporting
Values: n = 0 or 1
Default: 0
Description: Enables or disables the V.44 data compression report. If the compression report is en-
abled, the +DR:<type> intermediate result code reports the current DCE-DCE data com-
pression type. It is issued after the Error Control Report (+ER) and before the final re-
sult 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.
Command: +DS44=nV.44 Data Compression
Values: See description
Default: See description
Description: Controls the V.44 data compression function.
The command syntax is
+DS44=[direction][,[0][,[0][,[max_codewords_tx][,[max_codewords_rx][,[max_string_tx]
[,[max_string_rx][,[max_history_tx][,[max_history_rx]]]]]]]]]<CR> Subparameters
that are not entered retain their current value. Commas separate optional
subparameters, and must be inserted to skip a subparameter. Example:
+DS44=,,,2048,2048<CR> changes the maximum number of code words in both
directions, and keeps all other settings at their current values.