Denso BHT-700BB-CE Operator's Manual page 54

Transmitting Data
(5) GPRS and EDGE Communication
* BHT-700BWBG-CE only(BWBG can't be used in North America)
The BHT can perform packet data communication using GSM system mobile phone
networks via a wireless base station.
It is necessary to establish a contract with a service provider and acquire a SIM card
in order to perform packet data communication.
GPRS and EDGE
communication
Wireless base station
40