Abstract: A tracking tag worn by an individual which cooperates with a monitoring center to monitor the location of individuals. The tracking tag has a number of location determination features, including GPS and cellular geolocation methods. The tag includes a processor, flash memory, a wireless modem, a GPS receiver and tamper detection components. The tags of the system provide location information to the monitoring center on a regular periodic basis. The monitoring center maintains historical data of tag location correlated with tag positional information from both the GPS and cellular systems to enhance the verification of real-time positional information as it is received in real time from the tags. The system allows for a complex set of permissible and impermissible activities for the tag wearer and provides for detection and notification of violations.

Abstract: An Ethernet ADSL adapter controls data communication between an Ethernet port and an ADSL modem connected to an ADSL channel. The adapter includes a first buffer for storing data packets received at the Ethernet port, a second buffer for storing data packets received from the ADSL modem and a controller. When the first buffer contains a first predetermined number of data packets and data packets are not available for transmission to the Ethernet port, a jamming signal is transmitted from the Ethernet port. The jamming signal inhibits transmission of additional data packets to the Ethernet port by other Ethernet nodes until space is available in the first buffer. When the second buffer contains a second predetermined number of data packets, a pause signal is transmitted to the ADSL modem. The pause signal inhibits further transmission of data packets to the ADSL modem on the ADSL channel until space is available in the second+buffer.