These r control signals associated with modem or csu/dsu communication. all this signals up means interface is in up state.
- CTS - status of clear to send signal: up or down
- RTS - status of request to send signal: up or down
- DCD - status of data carrier detect signal: up or down (V.35 only)
- DSR - status of data set ready signal: up or down (V.35 only)
- DTR - status of data terminal ready signal: up or down (V.35 only)
- 5 minute input rate - data rates based on the traffic received in the last five minutes
- 5 minute output rate - data rates based on the traffic sent in the last five minutes
