TORONTO — June 5, 2015 –– DSC, part of the Security ... captures images during an alarm event. It features two-way voice, one-touch arming and disarming, panic button, SD card slot to ...

DSC GS3055-IGW GSM universal wireless ... In the event of an alarm, the communicator assesses its connection to the PSTN phone line, and if that has failed, they it automatically connect to the GSM ...