Protocol also handles the sending and receiving of messages using a datagram or serial port connection.
Protocol还处理使用数据报或串行端口连接的消息发送与接收。
2
RFCOMM is known as the virtual serial port protocol because it allows a Bluetooth device to simulate the functions of a serial port.
RFCOMM称作虚拟串口协议(virtual serial port protocol)，因为它允许蓝牙设备模拟串口的功能。
3
Early network Bridges, protocol converters, and routers were simple dedicated hardware units typically configured through a terminal directly connected to a serial port on the unit itself.