Specifications

Modem Signal and Line States
Signal and Line State Diagrams
DC-157
Cisco IOS Dial Technologies Configuration Guide
Figure 26 EXEC Creation on a Line Configured for a High-Speed Modem
Supporting Dial-In and Dial-Out Connections
To configure a line for both incoming and outgoing calls, use the following command in line
configuration mode:
Figure 27 illustrates the modem inout command. If the line is activated by raising the data set ready
(DSR) signal, it functions exactly as a line configured with the modem dialin line configuration
command described in the section “Automatically Answering a Modem” earlier in this chapter. If the
line is activated by an incoming TCP connection, the line functions similarly to lines not used with
modems.
high,
watching
Lower DTR
Ringing
Idle state
Ready and active
Ring transition
CTS raised
DTR
CTS
Create EXEC
Raise DTR
Lower DTR
close connection
DTR high
CTS lowered
or exit
Answer
timeout
DTR low
Hang up
S1001a
DTR low,
watching
CTS
Command Purpose
Router(config-line)# modem inout
Configures a line for both incoming and outgoing calls.