Cisco Systems DC-157 manual Configuring a Line Timeout Interval, DC-161, CTS lowered

Modem Signal and Line States

Signal and Line State Diagrams

Figure 27 EXEC and Daemon Creation for Incoming and Outgoing Calls

Idle state

DTR high, watching

CTS

CTS raised

Close connection,

DTR low for

5 seconds

Hang up

DTR going low

CTS lowered

DTR high,
watching	Ready
CTS

User-typed

activation

character Create

EXEC

Ready
	DTR high,
and	watching
active	CTS

Incoming network
	connection
		Create
	daemon
			Ready
DTR high,
watching			and
CTS			active

CTS lowered	CTS lowered or
or exit
	network
	connection	S1004a
	closed

Note If your system incorporates dial-out modems, consider using access lists to prevent unauthorized use.

Configuring a Line Timeout Interval

To change the interval that the Cisco IOS software waits for the CTS signal after raising the DTR signal in response to the DSR (the default is 15 seconds), use the following command in line configuration mode. The timeout applies to the modem callin command only.

Command	Purpose
Router(config-line)# modem answer-timeoutseconds	Configures modem line timing.

Note The DSR signal is called RING on older ASM-style chassis.

Cisco IOS Dial Technologies Configuration Guide

DC-161