> 2.4 | Handling of Control Lines on Virtual Ports

> Summary of control line handling.

> Table 2: | Virtual serial port with Multiplexer Protocol version 2

> Signal | Description
> RING | Read from hardware port, distributed to the first virtual port
> DCD | Read from hardware port, distributed to the first virtual port
> DSR | Received with Modem Status Command
> DTR | Set by user, sent with Modem Status Command, initialized with 1
> CTS | Received with Modem Status Command
> RTS | Set by user, sent with Modem Status Command, initialized with 1

> Table 3: | Virtual serial port with Multiplexer Protocol version 3

> Signal | Description
> RING | Received with Modem Status Command
> DCD | Received with Modem Status Command
> DSR | Received with Modem Status Command
> DTR | Set by user, sent with Modem Status Command, initialized with 1
> CTS | Received with Modem Status Command
> RTS | Set by user, Send with Modem Status Command, initialized with 1