Rev 3.2 Oct.05
97
+DS
[=<direction>]
[,<negotiation>]
[,<P1>][,<P2>]
+DS?
V.42
bis
compression control
Controls the functions of V.42
bis
data compression. See the GSM 04.22[18]
specification for more information.
Supported values
Note: This command must be used in conjunction with command
+CRLP
(page 92) to enable compression.
<direction>
Specifies the desired direction(s) of operation of data compression:
•
<direction>=0
: negotiated; no compression (V.42
bis
P0=0).
•
<direction>=1
: transmit only.
•
<direction>=2
: receive only.
•
<direction>=3
: default, both directions, accept any direction (V.42
bis
P0=11)—the default.
<negotiation>
specifies whether or not the modem should continue to operate if
the desired result is not obtained:
•
<negotiation>=0
: Do not disconnect if V.42
bis
is not negotiated by the
remote modem as specified in <direction>. (The default.)
•
<negotiation>=1
: Disconnect if V.42
bis
is not negotiated by the remote
modem as specified in <direction>.
<P1>
Specifies the maximum number of dictionary entries (512–2048 entries,
with 512 as the default) which should be negotiated.
<P2>
Specifies the maximum string length (6–255 bytes, default 20) to be
negotiated (V.42bis P2).
+DS?
reports the current settings.
+GMI
Modem manufacturer
Returns a text string listing Sierra Wireless as the manufacturer of the modem.
Equivalent to
+CGMI
+GMM
Modem model
Returns a text string identifying the model of Sierra Wireless modem in use.
Equivalent to
+CGMM
+GMR
Current modem firmware version
Returns a text string identifying the current firmware revision of the Sierra
Wireless modem. Equivalent to
+CGMR
+GOI
Global object identification
Returns the ISO system Global Object Identification (GOI) of the modem. The
general format is defined in ITU-T Recommendation X.208, and the encoding
rules in ITU-T Recommendation X.209.
Table 3-9: Command Reference Table (ASCII Alphabetic)
Command
Description
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