Specifications

Command Reference
Rev 3.2 Oct.05 97
+DS
[=<direction>]
[,<negotiation>]
[,<P1>][,<P2>]
+DS?
V.42bis compression control
Controls the functions of V.42bis 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.42bis P0=0).
• <direction>=1: transmit only.
• <direction>=2: receive only.
• <direction>=3: default, both directions, accept any direction (V.42bis
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.42bis is not negotiated by the
remote modem as specified in <direction>. (The default.)
• <negotiation>=1: Disconnect if V.42bis 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 (page 69).
+GMM Modem model
Returns a text string identifying the model of Sierra Wireless modem in use.
Equivalent to +CGMM (page 69).
+GMR Current modem firmware version
Returns a text string identifying the current firmware revision of the Sierra
Wireless modem. Equivalent to +CGMR (page 69).
+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