System information

Interpreting show line Output
Book Title
16-346
Figure 16-2 show line Command Output
When connectivity problems occur, important output appears in the Modem state and the Modem
hardware state fields.
Note The Modem hardware state field does not appear in the show line output for every platform.
In certain cases, the indications for signal states will be shown in the Modem state field instead.
Table 16-1 shows typical Modem state and Modem hardware state strings from the output of the
show line command and explains the meaning of each state.
Table 16-1 Modem and Modem Hardware States in show line Output
Modem State Modem Hardware State Meaning
Idle CTS noDSR DTR RTS These are the proper modem states for connections between an
access server or router and a modem (when there is no incoming
call). Output of any other kind generally indicates a problem.
Choncie# show line 1
Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns
1 AUX 38400/38400 - inout - - - 0 0 0/0
Line 1, Location: "", Type: ""
Length: 24 lines, Width: 80 columns
Baud rate (TX/RX) is 38400/38400, no parity, 2 stopbits, 8 databits
Status: No Exit Banner
Capabilities: Hardware Flowcontrol In, Hardware Flowcontrol Out
Modem Callout, Modem RI is CD
Modem state: Idle
Special Chars: Escape Hold Stop Start Disconnect Activation
^^x none - - none
Timeouts: Idle EXEC Idle Session Modem Answer Session Dispatch
0:10:00 never none not set
Session limit is not set.
Time since activation: never
Editing is enabled.
History is enabled, history size is 10.
Full user help is disabled
Allowed transports are pad telnet mop. Preferred is telnet.
No output characters are padded
No special data dispatching characters
Modem hardware state: CTS noDSR DTR RTS
Choncie#
Line speed
Hardware flow
control enabled
Modem
state
EXEC timeout
configured
Modem
hardware state
Modem control enabled