Specifications

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3.6.3 Security
This feature supports security functions laid down in the Bluetooth standard.
The Bluetooth security is divided into authentication and encryption. These are realized by the use
of PassKey (otherwise known as PIN code). PassKey is a shared (common) authentication key
used when forming a connection and trust relationship (bonding) with Bluetooth equipment. 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 done 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 previous connection. However, the partner Bluetooth equipment must
have also the trust relationship in 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.
3.6.4 COM Port
The following are the COM ports used via Bluetooth.
Table 3.58
Serial Profile (Client) COM6
Serial Profile (Server) COM7
DUN (Dial-Up Network) BTP1
Simultaneous Use of multiple Bluetooth COM Ports
Multiple Bluetooth COM ports cannot be opened simultaneously and used.