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The vGSM family of cards are supported under an extensive software framework comprised of low-level drivers, kernel-space middleware, user-space tools and an Asterisk's channel driver.

* Linux 2.6.9 to 2.6.23 drivers based on kstreamer, provide low-level access to hardware features
* Asterisk 1.2 and 1.4 channel driver provides wide access to the card's features
* Comprehensive access to debugging and troubleshooting data via Asterisk's CLI:
** Network registration status
** Registered and adjacent cell identifications, reception levels, quality, etc..
** SIM informations (ID, IMSI, PLMN selector, etc...)
** Call forwarding supplementary service status
** Call waiting supplementary service status
** Call status
** Call statistics
* Control of modules via Asterisk's CLI:
** Power-on, power-off, emergency power-off, reset

* SMS submission and delivery implemented under Asterisk's channel driver.
* SMS-SUBMIT available through Asterisk's Manager interface
* SMS-DELIVER, SMS-STATUS-REPORT and CBM-DELIVER primitives are piped to an external spooler application
* Support for ASCII, GSM and UTF-8 encoding
* Hex, base-64 and quoted-printable transfer encoding
* Direct delivery to the spooler without saving to the SIM (Phase 2+)
* Access to several SMS parameters such as:
** Service-centre selection
** status report request
** reply path
** message reference
** validity period
** UIDL message concatenation
* Automatic transcoding of received messages to UTF-8
* Error codes available to the client