Casio DT-X100 Series Software Manual page 74

(4) Security
This feature supports security functions regulated in the Bluetooth standard.
Bluetooth security is divided into authentication and encryption. Security is realized by using
PassKey (otherwise known as PIN code).
PassKey is a shared (common) authentication key used when forming a connection and trust
relationship (bonding) between Bluetooth devices. A maximum of 16 characters (in ASCII code) can
be used, but there may be limitations on the no. of digits and usable characters due to the
specifications of partner Bluetooth equipment. Also PassKey input must be completed within 30
seconds from a time when PassKey input request is generated.
Note that PassKey input is not required once "device trust" has been established with Bluetooth
equipment in a previous connection. However, the partner Bluetooth device must also have the trust
relationship in its memory.
Encryption is executed using a link key generated after PassKey exchange and a cipher key
generated from a 128-bit random number. Here, the partner Bluetooth equipment also must support
the encryption. PassKey exchange is required for Bluetooth connection when encryption is set
enabled.
(5) COM port list
The following are the COM ports used with Bluetooth.
In case of using Bluetooth Library
Serial profile (client)
Serial profile (server)
DUN (Dial-Up Network)
In case of using Microsoft Tool (Bluetooth Device Properties on Control Panel)
Serial profile (client)
DUN (Dial-Up Network)
* Save the BSP Port number to the following registry.
Key: HKEY_LOCAL_MACHINE¥SOFTARE¥Microsoft¥Bluetooth¥device¥ports¥(Device Name)
Value: index
(6) Action in case of communication interruption
If the radio wave condition in the area is bad and the distance between Bluetooth devices becomes
too long, the Bluetooth devices that cannot use radio wave communications may automatically cut
transmission. Communication interruptions can be checked in user applications as function errors
affecting WriteFile or ReadFile, etc.
In cases where communication is interrupted, carry out the normal Bluetooth interruption process
using the BT tool or user application, and then try to re-establish the same connection. If the normal
Bluetooth interruption process is not performed, mismatches in the internal status of the Bluetooth
stack will occur (for example, the lower layer may be disconnected), making continued Bluetooth
connection impossible.
(7) Processing during suspend and resume
Bluetooth communication is achieved by data communication with the Bluetooth device built into the
terminal.
When the terminal goes into suspend mode while Bluetooth is being used, power to the Bluetooth
device built into the terminal is automatically turned off. After that, when the terminal resumes
operation, power to the Bluetooth device will be also turned on automatically. However, once the
COM6
COM7
BSP0 (Use "BluetoothDUN" as the modem name.)
From BSP2 To BSP9*
From BSP2 To BSP9* (Use the name displayed from a scan
devices list.)
74