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Rev 7 May.12 Proprietary and Confidential 17

2: Supported GSM/WCDMA AT Commands

This chapter identifies standard AT commands that are supported by

Sierra Wireless UMTS AirCard and AirPrime devices. These

commands:

• Control serial communications over an asynchronous interface

(ITU-T Serial Asynchronous Dialling and Control (Recommen-

dation V.250), available on the International Telecommunication

Union web site, www.itu.int).

See Ta bl e 2 -1 below.

• Control SMS functions for devices on GSM/WCDMA networks

(3GPP TS 27.005, available on the 3GPP web site,

www.3gpp.org)

See Ta bl e 2 -2 on page 19.

• Control devices operating on GSM/WCDMA networks (3GPP TS

27.007, available on the 3GPP web site, www.3gpp.org)

See Ta bl e 2 -3 on page 20.

The tables below identify whether each command is supported on

Sierra Wireless UMTS devices. An “N/A” in the Supported column of

the table indicates that the command is related to a feature (such as

voice) that is not available on the modems.

Commands that are partially supported include descriptions

identifying any limitations on command usage. Also, some

commands are described in more detail in later chapters—the

descriptions for these commands link to those detailed entries (for

example,

&V in Tab le 2- 1 on page 17).

Table 2-1: Supported ITU-T Recommendation V.250 AT commands

Command Description Supported

=Yes; =No

&C Set Data Carrier Detected (Received line signal detector) function

mode



&D Set Data Terminal Ready function mode 

&F Set all current parameters to manufacturer’s defaults 

&S Set DSR signal 

&T Auto tests 

&V Return operating mode AT configuration parameters 

&W Store current parameter to user-defined profile 

+DR V42bis data compression report 

+DS V42bis data compression 

+GCAP Request complete TA capabilities list 

+GMI Request manufacturer identification 

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 93 94

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